CN110006808A - A device for simulating the development of fractured pipelines in karst areas - Google Patents

Abstract

The invention discloses a device for simulating the development of fissure pipelines in karst areas. The device simulates the development of underground fissure pipelines in karst areas through PVC steel wire hoses with different aperture sizes, and simulates the development of underground fissure pipelines in karst areas. The influence of the fractured pipeline under the influence of the degree (bending coefficient) on the soil leakage and material migration in the karst area, a surface-underground binary space water and soil process monitoring micro-area in the karst area was constructed, and the indoor artificial rainfall experiment was used to analyze the development of underground fractured pipelines. The effects of leakage and material migration reveal the spatial coupling relationship between the hydrological process and material migration process of underground fractured pipelines.

Description

A device for simulating the development of fractured pipelines in karst areas

technical field

The invention belongs to the technical fields of hydrology, ecology, soil leakage and soil and water conservation, and in particular relates to a device for simulating the development of fissure pipelines in karst areas. Consolidate the achievements of chemical governance and provide scientific basis for the sustainable use of land.

Background technique

The unique karstification in the karst area forms a surface-underground dual spatial structure. Under the synergy of natural and human factors, the karst surface presents a rocky desertification landscape with discontinuous soil cover, shallow soil layers and even large areas of bedrock exposed. Under the ground, fissures, dissolved pipes, funnels, shafts, sinkholes, karst caves, etc. are formed under the dissolution of carbonate rock (limestone). The special "binary" structure and porous media characteristics of the karst area make the flow of runoff in the shallow pores (cracks), pipes and funnels during the rainfall process to take away the soil, resulting in the phenomenon of "soil leakage". The process of soil and water loss in karst areas is complex. Water, soil and nutrients are not only lost with surface runoff, but also leak underground along karst fissures, pipes, sinkholes, etc. How to monitor the process of underground leakage and material migration in karst areas has become an urgent problem to be solved.

Due to the limited total amount of soil in the karst area, the low water conservation capacity, and the development of shallow pores (fissures), some atmospheric precipitation produces slope flow on the slope, and some carry nutrients along the soil, surface karst belt and conveyor belt in the karst vadose zone. Vertical infiltration, which enters the underground system through pipes and sinkholes in low-lying places, also makes the groundwater in karst areas vulnerable to pollution, difficult to control, and aggravates the degradation of karst water quality. In this context, key scientific issues such as which hydrological path and which hydrological driving mechanism are used by soil and nutrient substances in underground fractured karst pipelines are urgently in need of in-depth research.

At present, the devices for simulating the development of underground structures in karst areas are still based on simple generalized simulations. The development of underground fractured pipelines is also concentrated in the case of a single fracture degree, and rarely involves the bending complexity of fractured pipelines. These studies mainly focus on the current situation, mechanism and conceptual model of groundwater soil loss, and there is still a lack of coupled research on soil erosion and nutrient migration from the three-dimensional perspective of surface and underground. Due to the complexity and concealment of the development of underground fractured pipelines in karst areas, it is urgent to propose a device for simulating the development of fractured pipelines in karst areas.

SUMMARY OF THE INVENTION

Based on the above prior art, the present invention provides a device for simulating the development of fissures and pipelines in karst areas. The device has a simple structure, can simulate the development of fissures under various control conditions, and can also collect soil leakage under different development of fissures and pipelines. And solute migration, discuss the underground vertical leakage process of soil in karst areas, lay the foundation for the systematic study of soil migration in underground fissure pipelines and its ecological environment effects, and provide scientific countermeasures for the control of rocky desertification in karst areas.

The technical scheme adopted to realize the above-mentioned purpose of the present invention is:

A device for simulating the development of fissure pipelines in karst areas, including a first support pier, a second support pier, a karst landform model, an underground diversion component, a water bucket and a sampling bottle. There are two water buckets and a first support pier. and the second supporting pier are fixed on the ground. The karst landform model includes an soil holding tank, the soil holding tank is inclined, the top of the soil holding tank is connected with the first supporting pier, the bottom of the soil holding tank is connected with the second supporting pier, and the bottom of the soil holding tank is connected. There are multiple simulated bedrocks in sequence from bottom to top. Multiple simulated bedrocks separate the interior space of the soil holding tank. The soil holding tank is filled with soil. All simulated bedrocks are covered by soil. Pre-embedded pipes, each pre-embedded pipe is filled with gauze, and there are multiple rows of reserved holes from bottom to top at the bottom of the soil holding tank. Above the bottom of the simulated bedrock, the inlets of the underground diversion components are respectively connected with the corresponding reserved holes in each row of reserved holes, the outlets of the underground diversion components are located directly above the sampling bottle, and the soil surface layer is located at the bottom of the soil holding tank. There is a surface runoff aqueduct, the lower end of the surface runoff aqueduct is connected with a surface runoff aqueduct, the lower end of the surface runoff aqueduct is located above the corresponding water receiving bucket, and the bottom of the soil holding tank is provided with a rock-soil interface flow aqueduct, and the rock-soil interface flow The lower end of the aqueduct is connected with a rock-soil interface flow diversion pipe, and the lower end of the rock-soil interface flow diversion pipe is located above the corresponding water receiving bucket.

Multiple rows of reserved holes are arranged at equal intervals, each row of reserved holes is formed by a plurality of reserved hole groups arranged at equal intervals, and each reserved hole group consists of the first reserved hole, the second reserved hole and the The third reserved hole is formed, the diameters of the first reserved hole, the second reserved hole and the third reserved hole are sequentially increased, and the first reserved hole, the second reserved hole and the third reserved hole are arranged in sequence .

The underground diversion assembly includes a diversion pipe assembly and an elbow sizing frame. There are multiple diversion pipe assemblies and a plurality of elbow sizing frames. The diversion pipe assembly consists of a first diversion elbow group, a diversion straight The pipe group and the second diversion elbow group are formed. The first diversion elbow group, the diversion straight pipe group and the second diversion elbow group are arranged at equal intervals, and each row of reserved holes consists of a plurality of reserved holes arranged at equal intervals. The hole assembly is composed of three reserved hole groups arranged at equal intervals. The number of guide pipe assemblies is equal to the product of the number of reserved hole assemblies and the number of reserved hole rows. Each guide pipe assembly The first diversion elbow group, the diversion straight tube group and the second diversion elbow group are respectively connected with the three reserved hole groups of the corresponding reserved hole assembly, and the number of the elbow shaping racks is equal to the first The sum of the number of the diversion elbow group and the second diversion elbow set. The elbow forming frame includes a base, three vertical rods and a support plate. The base is fixed on the ground, the three support rods are distributed in a straight line, and the three vertical rods The lower ends are connected to the base, the support plate is fixed on three vertical rods, and the support plate is set horizontally, there are multiple sampling bottles, three sampling bottles are placed on each support plate, and the remaining sampling bottles are placed on the ground. The flow elbow group is composed of a first guide elbow A, a first guide elbow B and a first guide elbow C. The first guide elbow A, the first guide elbow B and the first guide elbow The bending coefficient of the elbow C is the same, the diameters of the first diversion elbow A, the first diversion elbow B and the first diversion elbow C increase in turn, and the first diversion elbow A and the first reserved hole The diameters of the first diversion elbow B and the second reserved hole are the same, and the diameters of the first diversion elbow C and the third reserved hole are the same. The upper ends of the diversion elbow A, the first diversion elbow B and the first diversion elbow C are respectively connected with the first reserved hole, the second reserved hole and the third reserved hole of the corresponding reserved hole group. , the first diversion elbow A, the first diversion elbow B and the first diversion elbow C in each first diversion elbow group are respectively wound on the three vertical rods of the corresponding elbow setting frame, and each The lower ends of the first diversion elbow A, the first diversion elbow B and the first diversion elbow C in a set of diversion elbows are located directly above the three sampling bottles on the corresponding supporting plate, respectively. The straight-flow pipe group is composed of straight-direction pipe A, straight-direction pipe B, and straight-direction pipe C. The straight-direction pipe A, direct-direction pipe B, and straight-direction pipe C have the same length, and straight-direction pipe A has the same length. , The diameters of the diversion straight pipe B and the diversion straight pipe C increase in turn, the diversion straight pipe A has the same diameter as the first reserved hole, the diversion straight pipe B and the second reserved hole have the same diameter, and the diversion straight pipe has the same diameter as the second reserved hole. The diameters of the straight pipe C and the third reserved hole are the same, and the upper ends of the straight pipe A, the straight pipe B and the straight pipe C in each group are respectively the same as the diameter of the corresponding reserved hole group. The first reserved hole, the second reserved hole and the third reserved hole are connected, and the lower ends of the guiding straight pipe A, the guiding straight pipe B and the guiding straight pipe C in each guiding straight pipe group are respectively located at the corresponding lower ends. Just above the sampling bottle, the second diversion elbow group is composed of a second diversion elbow A, a second diversion elbow B and a second diversion elbow C. The second diversion elbow A, the second diversion elbow The bending coefficients of the diversion elbow B and the second diversion elbow C are the same, and the bending coefficient of the first diversion elbow A is smaller than that of the second diversion elbow A The diameters of the second diversion elbow A, the second diversion elbow B and the second diversion elbow C increase in turn, and the diameters of the second diversion elbow A and the first reserved hole are the same, The diameters of the second diversion elbow B and the second reserved hole are the same, the diameter of the second diversion elbow C and the third reserved hole are the same, and the second diversion elbow in each second diversion elbow group A. The upper ends of the second diversion elbow B and the second diversion elbow C are respectively connected with the first reserved hole, the second reserved hole and the third reserved hole of the corresponding reserved hole group, and each second The second diversion elbow A, the second diversion elbow B and the second diversion elbow C in the diversion elbow group are respectively wound on the three vertical rods of the corresponding elbow setting frame, and each second diversion elbow The lower ends of the second diversion elbow A, the second diversion elbow B, and the second diversion elbow C in the tube set are respectively located directly above the three sampling bottles on the corresponding pallet.

Multiple simulated bedrocks are arranged at equal intervals, the cross-section of the simulated bedrock is trapezoidal, and the line where each row of reserved holes is located is parallel to the bottom surface of the simulated bedrock.

The angle between the bottom of the soil trough and the horizontal plane is 15°, the bottom of the trough is square, and the bottom surface of the simulated bedrock is parallel to the edge in the width direction of the bottom of the soil trough.

The top of the soil holding tank is erected on the top of the first supporting pier, and the bottom of the soil holding tank is erected on the top of the second supporting pier.

A pipeline switch is provided on each pre-embedded pipe near the outlet end.

Compared with the prior art, the beneficial effects and advantages of the present invention are:

1. Three kinds of reserved holes with different diameters are arranged at the bottom of the soil holding tank of the device, and the steel wire transparent hose (also divided into straight pipe and curved pipe) is connected according to the diameter of the reserved hole to simulate the development of underground fissures. The crack shape considers the degree of bending and the size of the pore size, which can simulate the development of cracks under various control conditions. The embedded pipe can be opened and closed to realize whether there are cracks in the ground, and different crack rates can be realized by closing the part.

2. The device is simple in construction. It is built with reinforced concrete and can be reused. The interior is composed of brick bedrock, which can be disassembled. It can shape the undulating state of the bedrock according to different conditions, and can also be built according to specific conditions. A scale karst landform model that is flexible and intuitive.

3. The device simulates the effects of different pore sizes and bending degrees of fractured pipelines under different development conditions on soil leakage and material migration. It is intuitive, efficient and simple, and solves the problem that the existing technology cannot simulate underground fractures in karst areas. The key issue of the development of the pipeline, compared with the existing technology, this technical solution focuses more on the situation of the fractured pipeline under different bending degrees. It is limited to a single-case device that simulates the fissure rate of underground fissures in the karst area through the opening of the floor.

4. The device can collect soil leakage and solute transport under the development of different fissure pipelines, explore the underground vertical leakage process of soil in karst areas, and lay a foundation for the systematic study of soil migration and ecological environment effects of underground fissure pipelines, and lay a foundation for karst soils. Provide scientific countermeasures for regional rocky desertification control.

Description of drawings

Figure 1 is a schematic diagram of the structure of the device for simulating the development of underground fractured pipelines in karst areas.

Figure 2 is a schematic diagram of the internal structure of the karst landform model.

FIG. 3 is a schematic structural diagram of a guide tube assembly.

Among them, 1-the second support pier, 2-soil holding tank, 3-simulated bedrock, 4-soil, 5-pre-embedded pipe, 6-first diversion elbow A, 7-first diversion elbow B , 8-Pipe switch, 9-Sampling bottle, 10-Pole, 11-Surface runoff aqueduct, 12-Surface runoff aqueduct, 13-Base, 14-Geo-soil interface flow guide, 15-Geo-soil interface flow guide Water pipe, 16-first support pier, 17-first diversion elbow C, 18-first reserved hole, 19-second reserved hole, 20-third reserved hole, 21-direction straight pipe A, 22-direction straight pipe B, 23-direction straight pipe C, 24-second deflection pipe A, 25-second deflection pipe B, 26-second deflection pipe C, 27- Take the bucket, 28-pallet.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

The structure of the device for simulating the development of underground fissure pipelines in the karst area provided by the present invention is shown in Figure 1. The first support pier 16, the second support pier 1, a karst landform model, an underground diversion component, a water bucket 27 and a sampling bottle . There are two buckets.

The first support pier 16 and the second support pier 1 are both stacked with bricks, the height of the first support pier is 173 cm, and the height of the second support pier is 100 cm.

As shown in Figure 2, the karst landform model includes soil holding tank 2, which is made of reinforced concrete. In this embodiment, the bottom of soil holding tank 2 is square, and the length of the bottom of the soil holding tank is 300 cm, the width is 150 cm, and the thickness is 150 cm. is 10cm, and the thickness of the side wall of the soil holding tank is 5cm. The soil holding tank 2 is inclined and arranged. In this embodiment, the included angle between the bottom of the soil holding tank and the horizontal plane is 15°. The top of the soil holding tank 2 is erected on the top of the first supporting pier 16, and the bottom of the soil holding tank 2 is erected on the top of the second supporting pier 1, so that the soil holding tank is raised from the ground.

The bottom of the soil holding tank 2 is sequentially provided with a plurality of simulated bedrocks 3 arranged at equal intervals from bottom to top. The multiple simulated bedrocks 3 separate the interior space of the soil holding tank. In this embodiment, there are three simulated bedrocks. The simulated bedrock 3 is made of bricks, the cross-section of the simulated bedrock 3 is trapezoidal, and the top surface and the bottom surface of the simulated bedrock 3 are both square. The width of the bottom surface is 33cm, and the vertical bottom surface height of the simulated bedrock is 40cm. The soil holding tank 2 is filled with soil 4, and all the simulated bedrocks 3 are covered by the soil 4. In this embodiment, the soil thickness is 45 cm.

There is a pre-embedded pipe 5 in the middle of the bottom of each simulated bedrock 3, each pre-embedded pipe 5 is filled with gauze, and each pre-embedded pipe 5 is provided with a pipeline switch 8 near the outlet end. In this embodiment, the pre-embedded pipe is PVC pipe, the length of the embedded pipe is 43cm and the diameter is 5cm.

The bottom of the soil holding tank 2 is provided with multiple rows of reserved holes arranged at equal intervals from the bottom to the top, and each row of reserved holes is located above the bottom of the corresponding simulated bedrock 3. In this embodiment, there are 3 rows of reserved holes, the lowest One row of reserved holes is 60cm away from the edge in the width direction where the bottom of the soil holding tank is located at the bottom, the middle row of reserved holes is 140cm from the edge in the width direction where the bottom of the soil holding tank is located at the bottom, and the top row of reserved holes is far away from the bottom of the soil holding tank. The groove bottom is located at the edge of the width direction of the bottom 220cm.

Each row of reserved holes is composed of a plurality of reserved hole assemblies arranged at equal intervals, and the reserved hole assemblies are composed of three reserved hole groups arranged at equal intervals. In this embodiment, each row of reserved holes is composed of one reserved hole. Hole component composition. Each group of reserved holes is composed of first reserved holes 18 , second reserved holes 19 and third reserved holes 20 arranged at equal intervals. The first reserved holes 18 , the second reserved holes 19 and the third reserved holes The diameters of the holes 20 increase sequentially, and the first reserved holes 18 , the second reserved holes 19 and the third reserved holes 20 are arranged in sequence. In this embodiment, each row of reserved holes is composed of three reserved hole groups, and the diameters of the first reserved hole, the second reserved hole and the third reserved hole are 1 cm, 2 cm, and 5 cm, respectively.

The underground drainage assembly includes a guide pipe assembly and a bending pipe setting frame. There are multiple guide pipe assemblies and a bending pipe setting frame. In this embodiment, there are three guide pipe assemblies and six bending pipe setting frames.

The elbow forming frame includes a base 13, three vertical rods 10 and a support plate 28, the base 13 is fixed on the ground, the three support rods 10 are distributed in a straight line, the lower ends of the three vertical rods 10 are all connected to the base 13, and the support plate 28 is fixed on the three on the pole 10, and the support plate 28 is arranged horizontally.

There are multiple sampling bottles, three sampling bottles 9 are placed on each support plate 28, and the remaining sampling bottles 9 are placed on the ground. In this embodiment, there are 27 sampling bottles.

The diversion tube assembly is composed of a first diversion elbow group, a diversion straight tube group and a second diversion elbow set which are arranged in sequence. The first diversion elbow set, the diversion straight tube group and the second diversion elbow set The tubes are arranged at equal intervals, and the first diversion elbow group, the diversion straight tube set and the second diversion elbow set in each diversion tube assembly are respectively connected with the three reserved hole groups of the corresponding reserved hole assembly.

The first diversion elbow group is composed of a first diversion elbow A6, a first diversion elbow B7 and a first diversion elbow C17. In this embodiment, the first diversion elbow A6, the first diversion elbow A6, the first diversion elbow The elbow B7 and the first diversion elbow C17 are all PVC steel wire transparent hoses, and the bending coefficient of the first diversion elbow A6, the first diversion elbow B7 and the first diversion elbow C17 (bending coefficient=conduction The actual length of the flow tube/the straight length of the guide tube) are both 1.5, the diameter of the first guide elbow A6 is 1cm, the diameter of the first guide elbow B7 is 2cm, and the diameter of the first guide elbow C17 is 5cm. The upper ends of the first diversion elbow A6, the first diversion elbow B7 and the first diversion elbow C17 in each first diversion elbow group are respectively connected with the first reserved holes 18 of the corresponding reserved hole groups. , the second reserved hole 19 is connected with the third reserved hole 20, and is sealed by silicone glue, the first diversion elbow A6, the first diversion elbow B7 and the first diversion elbow A diversion elbow C17 is respectively wound on the three vertical rods 10 of the corresponding elbow setting frame, and the first diversion elbow A6, the first diversion elbow B7 and the first diversion elbow in each first diversion elbow group The lower ends of the flow elbows C17 are respectively located directly above the three sampling bottles 9 on the corresponding pallets 28 . In this embodiment, taking the first diversion elbow A6 as an example, the linear distance between the lower end of the first diversion elbow A and its upper end is 80 cm.

The diversion straight tube group is composed of a diversion straight tube A21, a diversion straight tube B22 and a diversion straight tube C23. In this embodiment, the diversion straight tube A21, the diversion straight tube B22 and the diversion straight tube C23 are all PVC Steel wire transparent hose, the length of the straight guiding tube A21, B22 and the straight guiding tube C23 are all 120cm, the diameter of the straight guiding tube A21 is 1 cm, and the diameter of the straight guiding tube B22 is 2 cm. The diameter of the straight tube C23 is 5 cm. The upper ends of the guide straight pipe A21, the guide straight pipe B22 and the guide straight pipe C23 in each guide straight pipe group are respectively connected with the first reserved hole 18, the second reserved hole 19 and the corresponding reserved hole group. The third reserved hole 20 is connected and sealed with silicone glue. The straight diversion tube A21, the straight diversion tube B22 and the straight diversion tube C23 in each straight diversion tube group are naturally suspended. The lower ends of the guide straight pipe A21 , the guide straight pipe B22 and the guide straight pipe C23 are located directly above the corresponding sampling bottles 9 respectively.

The second diversion elbow group is composed of a second diversion elbow A24, a second diversion elbow B25 and a second diversion elbow C26. In this embodiment, the second diversion elbow A24, the second diversion elbow A24, the second diversion elbow The elbow B25 and the second diversion elbow C26 are all PVC steel wire transparent hoses. The bending coefficient of the second diversion elbow A24, the second diversion elbow B25 and the second diversion elbow C26 (bending coefficient=conduction The actual length of the flow tube / the straight length of the guide tube) are both 2, the diameter of the second guide elbow A24 is 1cm, the diameter of the second guide elbow B25 is 2cm, and the diameter of the second guide elbow C26 is 5cm. The upper ends of the second diversion elbow A24, the second diversion elbow B25 and the second diversion elbow C26 in each second diversion elbow group are respectively connected with the first reserved hole 18 of the corresponding reserved hole group. , The second reserved hole 19 and the third reserved hole 20 are connected and sealed by silicone glue. The two diversion elbows C26 are respectively wound on the three vertical rods 10 of the corresponding elbow forming frame, and the second diversion elbow A24, the second diversion elbow B25 and the second diversion elbow in each first diversion elbow group The lower ends of the flow bends C26 are respectively located directly above the three sampling bottles 9 on the corresponding pallets 28 . In this embodiment, taking the second diversion elbow A24 as an example, the linear distance between the lower end of the second diversion elbow A24 and its upper end is 60 cm.

The surface layer of the soil 4 is located at the bottom of the soil holding tank and is provided with a surface runoff aqueduct 11 , the lower end of the surface runoff aqueduct 11 is connected with a surface runoff aqueduct 12 , and the lower end of the surface runoff aqueduct 12 is located above the corresponding water receiving bucket 27 . In this embodiment, the surface runoff water conduit is a PVC pipe with a length of 20 cm and a diameter of 5 cm; the surface runoff water conduit is a PVC steel wire transparent hose with a diameter of 5 cm. The bottom of the soil holding tank 2 is provided with a rock-soil interface flow aqueduct 14, the lower end of the rock-soil interface flow aqueduct 14 is connected with a rock-soil interface flow aqueduct 15, and the lower end of the rock-soil interface flow aqueduct 15 is located at the bottom of the corresponding water receiving bucket 27. above. In this embodiment, the water diversion pipe for the rock-soil interface flow is a PVC pipe with a length of 40 cm and a diameter of 5 cm; the water diversion pipe for the rock-soil interface flow is a PVC steel wire transparent hose with a diameter of 5 cm. The surface runoff aqueduct 11 and the geotechnical interface flow aqueduct 14 respectively pass through the top of the second support pier 1 .

Test 1. Indoor test of the device of the present invention for simulating the development of underground fissure pipelines in karst areas

experimental method:

Use portable automatic downward spray artificial rainfall equipment (model: QYJY-501) for indoor artificial rainfall. For the convenience of description, the first diversion elbow A, the first diversion elbow B, and the first diversion elbow C are , the diversion straight pipe A, the diversion straight pipe B, the diversion straight pipe C, the second diversion elbow A, the second diversion elbow B and the second diversion elbow C are unified into the underground diversion pipe. When the surface runoff aqueduct, rock-soil interface flow aqueduct or underground aqueduct of the above device starts to produce flow, the time is started, and the surface runoff aqueduct, the rock-soil interface flow aqueduct and the underground aqueduct are connected every 10min. The effluent sediment samples were respectively placed in large barrels marked with scales to measure the production flow, and the drying method was used to measure the sand production.

The test results are shown in the following table:

Claims (7)

1. a kind of simulation Karst region crack pipeline developmental state device, it is characterised in that: including the first support pier stud, second Pier stud, karst landform model, underground guiding subassembly, water receiver and sampling bottle are supported, there are two water receivers, the first support pier stud It is both secured on ground with the second support pier stud, karst landform model includes earth-containing groove, and earth-containing groove is obliquely installed, earth-containing groove top Portion is connect with the first support pier stud, and earth-containing groove bottom is connect with the second support pier stud, and earth-containing groove slot bottom is successively arranged from top to bottom Multiple simulation basement rock, multiple simulation basement rock separate earth-containing groove inner space, and soil, all simulation bases are filled in earth-containing groove Rock is covered by soil, and each simulate is equipped with built-in pipe among basement rock bottom, is filled with gauze in each built-in pipe, earth-containing groove slot bottom from Under it is supreme be equipped with multiple rows of preformed hole, the number of rows of preformed hole and the simulation number of basement rock are equal, and each row's preformed hole is located at corresponding mould The top of quasi- basement rock bottom, the entrance of underground guiding subassembly are connected with preformed hole corresponding in each row's preformed hole respectively, and underground is led The outlet for flowing component is located at the surface of sampling bottle, and upper soll layer, which is located at earth-containing groove bottom, is equipped with rainwash aqueduct, ground Table runoff aqueduct lower end is connected with rainwash aqueduct, and the lower end of rainwash aqueduct is located at the upper of corresponding water receiver Side, earth-containing groove slot bottom bottom are equipped with rock soil interface conductance water pipe, and rock soil interface conductance water pipe lower end is connected with rock soil interface stream and draws Water pipe, the lower end of rock soil interface stream aqueduct are located at the top of corresponding water receiver.

2. simulation Karst region crack pipeline developmental state device according to claim 1, it is characterised in that: multiple rows of pre- It boxes out equidistant arrangement, every row's preformed hole is equidistantly arranged by multiple preformed hole groups, and each preformed hole group is by equidistantly arranging The first preformed hole, the second preformed hole and the third preformed hole of column are constituted, the first preformed hole, the second preformed hole and third preformed hole Diameter is sequentially increased, and the first preformed hole, the second preformed hole and third preformed hole are arranged successively.

3. simulation Karst region crack pipeline developmental state device according to claim 2, it is characterised in that: described Underground drainage component includes water conservancy diversion tube assembly and bend pipe shaping rack, and water conservancy diversion tube assembly and bend pipe shaping rack have multiple, diversion pipe Component is made of the first diversion elbow group, water conservancy diversion straight tube group and the second diversion elbow group being arranged successively, the first diversion elbow group, Water conservancy diversion straight tube group and the second diversion elbow equidistantly arrange, and every row's preformed hole is by multiple reserved aperture member structures equidistantly arranged At the preformed hole group that reserved aperture member is equidistantly arranged by three is constituted, and the number of water conservancy diversion tube assembly is equal to reserved aperture member The product of number and preformed hole number of rows, the first diversion elbow group, water conservancy diversion straight tube group and the second water conservancy diversion in each water conservancy diversion tube assembly are curved Pipe group is connected with three preformed hole groups of corresponding reserved aperture member respectively, and the number of bend pipe shaping rack is equal to the first diversion elbow The summation of both group and the second diversion elbow group number, bend pipe shaping rack includes that pedestal, three upright bars and supporting plate, pedestal are fixed on On ground, three struts are linearly distributed, and the lower end of three upright bars is connect with pedestal, and supporting plate is fixed in three upright bars, and Pallets level setting, sampling bottle have multiple, and three sampling bottles are placed on each supporting plate, and remaining sampling bottle is placed on ground, the One diversion elbow group is made of the first diversion elbow A, the first diversion elbow B and the first diversion elbow C, the first diversion elbow A, The bending coefficient of one diversion elbow B and the first diversion elbow C are identical, and the first diversion elbow A, the first diversion elbow B and first are led The diameter of stream bend pipe C is sequentially increased, and the diameter of the first diversion elbow A and the first preformed hole is identical, the first diversion elbow B and second The diameter of preformed hole is identical, and the first diversion elbow C is identical with the diameter of third preformed hole, first in each first diversion elbow group The upper end of diversion elbow A, the first diversion elbow B and the first diversion elbow C respectively with the first preformed hole of corresponding preformed hole group, Second preformed hole is connected with third preformed hole, the first diversion elbow A, the first diversion elbow B in each first diversion elbow group and First diversion elbow C is respectively wound around in three upright bars of corresponding bend pipe shaping rack, and first in each first diversion elbow group is led The lower end of stream bend pipe A, the first diversion elbow B and the first diversion elbow C are located at three sampling bottles on corresponding supporting plate Surface, water conservancy diversion straight tube group are made of water conservancy diversion straight tube A, water conservancy diversion straight tube B and water conservancy diversion straight tube C, water conservancy diversion straight tube A, water conservancy diversion straight tube B and are led The length for flowing straight tube C is identical, and the diameter of water conservancy diversion straight tube A, water conservancy diversion straight tube B and water conservancy diversion straight tube C are sequentially increased, water conservancy diversion straight tube A and the The diameter of one preformed hole is identical, and the diameter of water conservancy diversion straight tube B and the second preformed hole is identical, water conservancy diversion straight tube C and third preformed hole it is straight Diameter is identical, and the upper end of water conservancy diversion straight tube A, water conservancy diversion straight tube pipe B and water conservancy diversion straight tube C in each water conservancy diversion straight tube group are reserved with corresponding respectively The first preformed hole, the second preformed hole of hole group are connected with third preformed hole, and water conservancy diversion straight tube A, the water conservancy diversion in each water conservancy diversion straight tube group are straight The lower end of pipe pipe B and water conservancy diversion straight tube C are located at the surface of corresponding sampling bottle, and the second diversion elbow group is curved by the second water conservancy diversion Pipe A, the second diversion elbow B and the second diversion elbow C are constituted, and the second diversion elbow A, the second diversion elbow B and the second water conservancy diversion are curved The bending coefficient of pipe C is identical, bending coefficient of the bending coefficient less than the second diversion elbow A of the first diversion elbow A, the second water conservancy diversion The diameter of bend pipe A, the second diversion elbow B and the second diversion elbow C are sequentially increased, the second diversion elbow A and the first preformed hole Diameter is identical, and the diameter of the second diversion elbow B and the second preformed hole is identical, the diameter of the second diversion elbow C and third preformed hole It is identical, the upper end difference of the second diversion elbow A, the second diversion elbow B and the second diversion elbow C in each second diversion elbow group It is connected with the first preformed hole of corresponding preformed hole group, the second preformed hole and third preformed hole, in each second diversion elbow group Second diversion elbow A, the second diversion elbow B and the second diversion elbow C are respectively wound around three upright bars of corresponding bend pipe shaping rack On, position is distinguished in the lower end of the second diversion elbow A, the second diversion elbow B and the second diversion elbow C in each second diversion elbow group In the surface of three sampling bottles on corresponding supporting plate.

4. simulation Karst region crack pipeline developmental state device according to claim 2, it is characterised in that: Duo Gemo Quasi- basement rock equidistantly arranges, and the cross section for simulating basement rock is trapezoidal, and the straight line parallel where each row's preformed hole is in simulation basement rock bottom Face.

5. simulation Karst region crack pipeline developmental state device according to claim 4, it is characterised in that: earth-containing groove The angle of slot bottom and horizontal plane is 15 °, and earth-containing groove slot bottom is square, and simulation basement rock bottom surface is parallel to earth-containing groove slot bottom width direction Edge.

6. simulation Karst region crack pipeline developmental state device according to claim 1, it is characterised in that: earth-containing groove Top shelf is set on the first support pier column top, and earth-containing groove bottom shelf is set on the second support pier column top, rainwash water guide Pipe and rock soil interface conductance water pipe are each passed through the second support pier column top.

7. simulation Karst region crack pipeline developmental state device according to claim 1, it is characterised in that: each pre-buried Pipe switch is equipped on pipe at outlet end.