CN205229007U - Apparatus is united with native water characteristic curve to capillary rising degree on water - Google Patents

Abstract

The utility model discloses an apparatus is united with native water characteristic curve to capillary rising degree on water, including the moisturizing groove, one side of moisturizing groove lower part is equipped with the water inlet that is connected to the delivery pipe, and the opposite side is equipped with the delivery port, and the upside of water inlet is equipped with the gap that is used for controlling water level, and the delivery port in moisturizing groove is established ties through the connecting pipe and is had a plurality of water holding tank, is equipped with an organic glass section of thick bamboo that is used for adding soil among the water holding tank, and a plurality of moisture sensor are installed to one side of an organic glass section of thick bamboo, an organic glass section of thick bamboo form by a plurality of detachable organic glass section of thick bamboo units, the downside that lies in the organic glass section of thick bamboo unit of lower floor is equipped with a plurality of infiltration holes, the bottom that lies in the organic glass section of thick bamboo unit of lower floor still is equipped with the bottom, also is equipped with a plurality of infiltration holes on the bottom, the bottom inboard is equipped with the permeable stone, lies in to be equipped with the top cap on the organic glass section of thick bamboo unit of the superiors. The utility model discloses it is experimental to carry out the multiunit simultaneously, can survey capillary rise height and native water characteristic curve.

Description

A joint measuring instrument for capillary water rising height and soil-water characteristic curve

technical field

The utility model belongs to the field of soil property testing, in particular to a combined measuring instrument for capillary water rising height and soil-water characteristic curve.

Background technique

In engineering practice, the capillary phenomenon in the soil can often be seen. As the water table rises, the capillary water zone rises accordingly. The rise of capillary water may cause some adverse engineering consequences. The indicators for evaluating the capillarity of soil include the height of capillary water rise and the speed of capillary water rise.

At present, the test instrument for measuring the rising height of the capillary is the capillary tester in the road geotechnical test regulations. The plexiglass tube it uses is integrated, but a small hole is opened every 10 cm, and then a small plexiglass cover is equipped, and the water supply system A special spring is used to ensure that the water replenishment height of the plexiglass cylinder remains unchanged, but due to the limitation of the laboratory conditions, this device is inconvenient to operate.

There are many measurement methods for the current soil-water characteristic curve, but there is no one that can simultaneously measure the height of capillary water rise and the soil-water characteristic curve. The two need to be measured separately, which is extremely inconvenient to operate.

Utility model content

The purpose of this utility model is to provide a combined measuring instrument for capillary water rise height and soil-water characteristic curve, so as to overcome the problems in the prior art. The height of the plexiglass tube can be increased or decreased by increasing or decreasing the number of plexiglass tubes according to the difference in the height of the capillary water rise of different soils.

In order to achieve the above object, the utility model adopts the following technical solutions:

A combined measuring instrument for capillary water rise height and soil-water characteristic curve, comprising a water supply tank, one side of the lower part of the water supply tank is provided with a water inlet connected to a water supply pipe, the other side is provided with a water outlet, and the upper side of the water inlet is provided with a In the overflow port for controlling the water level, the water outlet of the replenishment tank is connected in series with several water tanks through connecting pipes, in which there are plexiglass cylinders for adding soil, and a number of moisture sensors are installed on one side of the plexiglass cylinders. The glass cylinder is composed of several detachable plexiglass cylinder units. There are some seepage holes on the lower side of the plexiglass cylinder unit at the lowest level. A number of seepage holes are provided, a permeable stone is provided on the inner side of the bottom cover, and a top cover is provided on the uppermost plexiglass cylinder unit.

Further, the plexiglass cylinder units are connected by flanges.

Further, the seepage holes on the lower side of the organic glass cylinder unit located at the bottom layer are distributed in a ring shape.

Further, the inner diameters of the water supply tank and the water storage tank are both 18cm, the height of the water supply tank is 15cm, and the height of the water storage tank is 10cm.

Further, the distance between the overflow port and the bottom of the water supply tank is 5cm.

Further, the plexiglass cylinder is composed of 3-5 plexiglass cylinder units.

Further, the height of the plexiglass cylinder unit is 40 cm, and the inner diameter is 9 cm.

Further, the connecting pipe is a rubber pipe.

Compared with the prior art, the utility model has the following beneficial technical effects:

When the utility model is in use, put each plexiglass cylinder unit with a bottom cover in the bottom layer into each water tank, after placing it, add soil layer by layer into the cylinder, compact each layer to a certain height, and then connect The second layer of plexiglass cylinder unit, and then proceed in sequence until it reaches the required height; then install a moisture sensor on one side of each plexiglass cylinder; fill water into the water replenishment tank through the water supply pipe, and the water replenishment tank is connected with each water storage tank The water in the replenishment tank flows into each water tank. When the water flows out from the overflow of the water replenishment tank and the water level in the water replenishment tank and each water tank remains unchanged, the test starts. After the test, remove each plexiglass cylinder immediately. Quickly measure the moisture content at the position where each moisture sensor is installed, and calibrate the volumetric moisture content measured by the moisture sensor.

The utility model adopts the moisture sensor, which can monitor the volume water content of the soil at different heights in real time, can measure the time required for the capillary water to rise stably, can measure the capillary water rising speed, and can calibrate the volume water content, which not only reaches the standard test instrument The same effect, but also can achieve other effects; the utility model can measure the soil-water characteristic curve of the soil, the size and distribution of the moisture content inside the soil must eventually reach a stable state, at this time, the volume at different heights is measured by the moisture sensor moisture content, the relationship curve between soil volume moisture content and soil height can be obtained, that is, the soil water characteristic curve; The height of capillary water rises is different, and the increase or decrease of the height of the organic glass cylinder is realized by increasing or decreasing the number of the organic glass cylinders, and the utility model can carry out multiple groups of tests at the same time.

Description of drawings

Fig. 1 is the overall schematic diagram of the utility model.

Among them, 1-top cover; 2-plexiglass cylinder; 3-moisture sensor; 4-sink; 5-flange; 6-connecting pipe;

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Fig. 1, a combined measuring instrument for capillary water rising height and soil-water characteristic curve comprises a water supply tank 7, one side of the bottom of the water supply tank 7 is provided with a water inlet 9 connected to a water supply pipe, and the other side is provided with a water outlet, The upper side of the water inlet 9 is provided with an overflow port 8 for controlling the water level, and the distance between the overflow port 8 and the bottom of the water supply tank 7 is 5 cm, and the water outlet of the water supply tank 7 is connected in series with some water tanks 4, water supply tanks 7 and storage tanks through rubber tubes. The internal diameter of water tank 4 is 18cm, and the height of replenishment tank 7 is 15cm, and the height of water storage tank 4 is 10cm, is provided with the plexiglass tube 2 that is used to add soil in the water tank 4, and some moisture is installed on one side of plexiglass tube 2 Sensor 3, the plexiglass cylinder 2 is composed of 3 to 5 plexiglass cylinder units connected by flanges 5, the height of the plexiglass cylinder unit is 40cm, the inner diameter is 9cm, the plexiglass cylinder unit located at the bottom There is a circle of seepage holes on the lower side, and there is a bottom cover at the bottom of the plexiglass cylinder unit on the lowest level. There is a top cover 1 on it.

The operating process of the present utility model is described in detail below:

The utility model comprises a plexiglass cylinder 2 connected by flanges of plexiglass cylinder units. The top of the plexiglass cylinder 2 is provided with a top cover 1 made of plexiglass material. The plexiglass cylinder unit at the bottom of the plexiglass cylinder 2 is sealed at the bottom. There is a bottom cover, and there are several seepage holes on the bottom cover. There are water-permeable stones on the inner bottom of the organic glass cylinder unit at the bottom end. In the water tank 4, the water outlet of the replenishment tank 7 is connected in series with some water tanks 4 with rubber tubes, the water tanks 4 are connected by rubber tubes, the water inlet 9 of the water replenishment tank 7 is connected with the water supply pipe, and water is injected into the water replenishment tank 7. The replenishment tank 7 is fed with water through the water inlet 9, and the overflow port 8 overflows, so that the water surface in the replenishment tank 7 remains on the same level as the overflow port 8, and the replenishment tank 7 forms a connector with each water storage tank 4, so that the water storage tank 4 The inner water surface is also equal to 8 places of the overflow, so that the inner water surface of the water tank 4 remains unchanged.

When in use, put the lowermost plexiglass cylinder unit with a bottom cover into each water tank 4, after placing it, add soil layer by layer to the lowermost plexiglass cylinder unit, compact each layer to a certain height, Then after installing a certain height of soil, connect the second layer of plexiglass cylinder unit, and then proceed in sequence until it reaches the required height; then install the moisture sensor 3 on the side of the plexiglass cylinder 2; then fill the water inlet 9 of the water tank 7 Connect with the water supply pipe, the water outlet of the replenishing water tank 7 is connected with the water inlet of the water tank 4 through rubber tubes, the water tanks 4 are connected by rubber tubes, and then water is injected into the water replenishing tank 7 through the water supply pipe, and the water replenishing tank 7 is connected with each The water holding tank 4 is a connector, and the water in the replenishing water tank 7 flows in each water holding tank 4, and when water flows out from the overflow port 8 of the water replenishing tank 7, the water level in the water replenishing tank 7 and each water holding tank 4 remains constant, and then the test begins. After the test is over, the plexiglass cylinder 2 is removed immediately, and the moisture content at the positions where each moisture sensor 3 is inserted is quickly measured, and the volumetric moisture content measured by the moisture sensor 3 is calibrated. The utility model adopts the moisture sensor 3 to monitor the volumetric water content of the soil at different heights in real time, to measure the time required for the capillary water to rise stably, to measure the capillary water rising speed, to measure the soil-water characteristic curve of the soil, and to measure the water content of the soil. The calibration of the volumetric moisture content can carry out multiple groups of tests at the same time, which not only achieves the same effect as the standard test instrument, but also achieves other effects.

Claims (8)

1. a capillary water height and soil-water characteristic curve simultaneous determination instrument, it is characterized in that, comprise moisturizing groove (7), the side of moisturizing groove (7) bottom is provided with the water inlet (9) being connected to feed pipe, opposite side is provided with water delivering orifice, the upside of water inlet (9) is provided with the gap (8) for controlling water level, the water delivering orifice of moisturizing groove (7) is in series with some Storage water tanks (4) by connecting pipe (6), the organic glass cylinder (2) for adding soil is provided with in Storage water tank (4), the side of organic glass cylinder (2) is provided with some moisture transducers (3), described organic glass cylinder (2) is made up of some dismountable organic glass cylinder unit, the downside being positioned at undermost organic glass cylinder unit is provided with some water seepage holes, the bottom being positioned at undermost organic glass cylinder unit is also provided with bottom, bottom is also provided with some water seepage holes, permeable stone is provided with inside bottom, the organic glass cylinder unit being positioned at the superiors is provided with top cover (1).

2. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, connected between organic glass cylinder unit by ring flange (5).

3. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, the water seepage hole be positioned on the downside of undermost organic glass cylinder unit distributes in the form of a ring.

4. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, it is characterized in that, the internal diameter of moisturizing groove (7) and Storage water tank (4) is 18cm, the height of moisturizing groove (7) is 15cm, and the height of Storage water tank (4) is 10cm.

5. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, the distance of gap (8) distance moisturizing groove (7) bottom is 5cm.

6. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, organic glass cylinder (2) is made up of 3 ~ 5 organic glass cylinder unit.

7. a kind of capillary water height according to claim 6 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, the height of organic glass cylinder unit is 40cm, and internal diameter is 9cm.

8. a kind of capillary water height according to claim 1 and soil-water characteristic curve simultaneous determination instrument, is characterized in that, described connecting pipe (6) is rubber tube.