CN203519230U - Coal-rock mass stress directional monitoring device - Google Patents
Coal-rock mass stress directional monitoring device Download PDFInfo
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- CN203519230U CN203519230U CN201320618335.0U CN201320618335U CN203519230U CN 203519230 U CN203519230 U CN 203519230U CN 201320618335 U CN201320618335 U CN 201320618335U CN 203519230 U CN203519230 U CN 203519230U
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Abstract
A coal-rock mass stress directional monitoring device is disclosed. The device comprises a three-way valve, a pressure gage, a high-pressure oil pump and a cylinder body sensor. The cylinder body sensor is provided with three piston sensing sheets which are respectively connected with a piston cylinder. Outer ends of high-pressure oil pipes respectively connected with the piston cylinders are respectively connected through the three-way valve to the pressure gage or a data converter and a high-pressure oil pump which are connected with a data acquisition instrument. After the cylinder body sensor is arranged in a drill hole, the cylinder body sensor bears pressure by injecting oil; the piston sensing sheets can adaptively coupled to coal-rock mass well; and stress intensity and changes inside coal-rock mass in the above three directions are monitored. Monitoring can be carried out in both insiturockmass and broken coal-rock mass. The coal-rock mass stress directional monitoring device can be widely applied in measurement of geostress and stability analysis of surrounding rock and the like in fields of mine, construction, water conservancy, road, tunnel and underground construction.
Description
Technical field
The utility model relates to coal and rock stress monitoring technical field, especially a kind of coal and rock stress directional monitoring device that is applicable to mine, and the terrestrial stress that also can be used for building, water conservancy, road, tunnel and underground works is tested and Stability Analysis of The Surrounding Rock.
Background technology
Be present in stratum and be not subject to the natural stress of Engineering Disturbance to be called the initial stress, also claim primary stress or terrestrial stress.It mainly comprises the gravity stress being caused by superincumbent stratum deadweight and the tectonic stress being caused by geological structure.Gravity stress σ
ν=γ Z, γ on cover coal rock layer proportion, Z is vertical depth.Tectonic stress can be divided into Modern tectonic stress and tectonic structure unrelieved stress.Terrestrial stress size is the underlying parameter of the disaster preventions such as coal mining, design of its support, rock burst and coal and Gas Outburst, test and assessment coal and rock stress are the main contents that observation is pressed in ore deposit, are also the basic acting forces that causes that mining engineering country rock, water conservancy and hydropower, railway, highway and the distortion of ground excavation project even destroy.To the Measurement accuracy of terrestrial stress, be ground and underground Geotechnical Engineering stability analysis, realize the prerequisite of Geotechnical Engineering relevant design and science decision.
Mining-induced stress refers to by adopting and causes, acts on the power on coal and rock and supporting thing.In the resource underground mining processes such as coal, recovery activity has been destroyed coal petrography virgin stress equilibrium state, causes and adopts space stress redistribution around, forms " three bands " and distributes; Around stope and mining roadway, because the effect of surrouding rock stress impels country rock, deform, mobile and destroy,, also may there is the dynamic phenomenons such as coal and Gas Outburst, gushing water, rock burst in ore deposit pressure phenomenons such as may occurring roof collapse and press, roof and floor shifts near, contract, lose under support stand under load.Therefore, mining-induced stress monitoring is the decision-making foundation that solves the key technical problems such as strata behavior analysis of roadway control, mining sequence design, roadway maintenance, rock burst and coal and gas outbursts Prediction and control that are subject to mining influence.
The inner stress of coal and rock is whole machine balancing, be coupled mutually, but the stress intensity on different directions is different, has the difference of major principal stress, intermediate principal stress and minimum stress.The stress measurement in past mainly lays particular emphasis on uniaxial stress or mean stress, could not measure the stress of a certain specific direction in coal and rock inside, also unrealized to coal and rock inside the stress in two-way or three directions monitor, this is far from being enough for disclosing coal and rock internal stress distribution rule.Comparatively speaking, stress monitoring two-way or three-dimensional is more close to engineering reality, and coal and rock internal stress is carried out to orientation, multidirectional monitoring for disclosing stress distribution law, determining that causing danger property of dynamic disaster and coal rock dynamic disaster control have important practical significance and reference value.
The test of terrestrial stress and mining-induced stress is very complicated engineering.At present, of a great variety for monitoring the equipment and instrument of coal and rock stress in engineering, but be really applicable to working condition under coal mine, can be in tectonization district Huo Shou mining influence district can Real-Time Monitoring coal and rock stress and proving installation and the method for variation less.Coal and rock stress state method of testing in current engineering practice or device have multiple, as 1) 36-2 borehole deformeter, it by mensuration hole in xsect the initial stress remove before and after aperture changing value calculate the initial stress.But test process operation is various, complicated operation; In crannied rock stratum and coal body, cannot test; Can not directed test; Can not multidirectional.2) the telescopic placement head of deep-hole ground stress detection device, by deep hole with telescopic header structure sensor stress value locality.Yet, under mine rugged environment, during installation, be easy to have influence on the strain property of foil gauge, make to test degree reliable for effect and greatly reduce. and this device can not test the initial value of terrestrial stress, needs sensor and coal and rock to carry out good coupling.At coal body, be subject to, in the rock mass of mining influence or the rock mass of joints development, can not apply; Can not directed test; Can not multidirectional.3) borehole stressmeter, utilizes the principle that string wire vibration frequency is directly proportional to pressure or pulling force to measure stress, is mainly used to measure the variation of the reserved stress of coal pillar in colliery, or is used for measuring foundation ditch rock mass or earth foundation, the situation of change of stress before and after excavation.But, can not realize sensor initially and the complete close contact of coal and rock, initial adaptive faculty is poor, need to work as coal and rock and be out of shape rear and sensor good contact, and aptitude test goes out stress.4) capsule-type taseometer, by taseometer is arranged in boring, inject fluid capsule is expanded and with coal and rock coupling contact measurement coal and rock internal stress.Direct reading, but taseometer volume is larger, and can not directional monitoring.5) oil pressure pillow, it can be used for detecting the pressure of roadway surrounding rock, arched girder, support.The flat boxes being welded by the sheet steel of two same shapes, it has a pressure equalizing chamber, and when oil pressure pillow bears ambient pressure, with oil pump, to oil inlet pipe pump oil, when interior metal film is during in equilibrium state, manometric reading is external force value.Oil pressure pillow is installed simpler, can directly read force value.But its equipment is installed inconvenient; Can only be for superficial part stress monitoring; Can not carry out axial stress test; Can not multidirectional.Therefore, design a kind of simple installation, strong adaptability, can be very important by device directed, multidirectional monitoring coal and rock stress.
Utility model content
Technical matters: the purpose of this utility model is for current coal and rock In-situ rock stress measurement complexity, requires high, difficult operation, the problems such as mining-induced stress monitoring adaptability and promptness are poor, provide a kind of can be directed, multidirectional, adapt to various loaded coal rock bodies (original coal and rock and broken coal and rock), coal and rock stress directional monitoring device easy and simple to handle.
Technical scheme: coal and rock stress directional monitoring device of the present utility model, comprise T-valve, tensimeter, high-pressure oil pump, data converter, data collecting instrument, also comprise through guide rod is installed and be located at the cylinder pressure inductor in coal and rock, cylinder pressure inductor is provided with three piston sensing chips, three piston sensing chips are connected with the piston cylinder of each Independent in cylinder pressure inductor through hold-down nut respectively, cylinder pressure inductor is provided with mounting rod joint with the junction that guide rod is installed, mounting rod joint is provided with the directed bolt of fixed installation guide rod, guide rod is installed and is provided with the directed graticule corresponding with directed bolt, to guarantee that cylinder pressure inductor direction in installation process does not deflect, cylinder pressure inductor end is provided with and enters the high-pressure oil pipe being connected with three piston sensing chips respectively in cylinder body, high-pressure oil pipe outer end is respectively through T-valve Bonding pressure table or the data converter being connected with data collecting instrument and high-pressure oil pump, and three monitoring directions are all furnished with independently high-pressure oil pipe and three-way valve.
Three described piston sensing chips comprise can monitor coal and rock internal bore axially and perpendicular to first piston sensing chip, the second piston sensing chip and the 3rd piston sensing chip of any both direction stress intensity of borehole axial and variation simultaneously.
Beneficial effect: the utility model is mainly used in stress and the Changing Pattern thereof of directional monitoring protolith or fractured coal and rock, adopt cylinder pressure inductor can with coal and rock self-adaptation good coupling, realize the stress state of mine or three directions of tunnel surrounding carried out to directional monitoring.Can carry out directional monitoring to borehole axial in protolith and fractured coal and rock and perpendicular to the stress of any both direction of borehole axial.Compare with existing coal and rock stress survey technology: in the coal and rock of virgin rock [mass and fragmentation, all can monitor, can reflect and adopt the STRESS VARIATION causing with roof movement.This coal and rock stress directional monitoring device can be widely used in the aspects such as the terrestrial stress test of mine, building, water conservancy, road, tunnel and underground works and Stability Analysis of The Surrounding Rock.There is orientation, multidirectional function; Operate faster, easyly, greatly reduced test job amount; Initiatively coupling is good for pressure inductor and coal and rock; The advantage of this monitoring method is installation and handling safety, convenient, little impact on production, and expense is low, has orientation, three-dimensional monitoring function, can realize real-time monitoring.
Accompanying drawing explanation
Fig. 1 is coal and rock stress directional monitoring device cylinder body triaxial pressure sensor structure schematic diagram of the present utility model;
The A-A cross-sectional view that Fig. 2 (a) is Fig. 1;
The B-B cross-sectional view that Fig. 2 (b) is Fig. 1;
Unidirectional cylinder pressure inductor schematic diagram in Fig. 3 coal and rock stress of the present utility model directional monitoring device;
Fig. 4 is two-way cylinder body pressure inductor schematic diagram in coal and rock stress directional monitoring device of the present utility model;
Fig. 5 is the borehole test application schematic diagram of coal and rock stress directional monitoring device of the present utility model.
In figure: three-dimensional cylinder pressure inductor l, high-pressure oil pipe 2, T-valve 3, installs guide rod 4, tensimeter 5, first piston sensing chip 6-1, the second piston sensing chip 6-2, the 3rd piston sensing chip 6-3, directed bolt 7, directed graticule 8, high-pressure oil pump 9, mounting rod joint 10 and hold-down nut 11, the first oil transportation mouth 12-1, the second oil transportation mouth 12-2, the 3rd oil transportation mouth 12-3, coal and rock M, data converter 13, data collecting instrument 14, power supply 15.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described:
Embodiment 3, according to actual monitoring needs, if only need be to the monitoring of two directions, two piston sensing chips and coupled piston cylinder respectively can be only set, as shown in Figure 4 on cylinder pressure inductor 1.Other is identical with embodiment mono-, slightly.
Claims (2)
1. a coal and rock stress directional monitoring device, comprise T-valve (3), tensimeter (5), high-pressure oil pump (9), it is characterized in that: also comprise through guide rod (4) is installed and be located at the cylinder pressure inductor (1) in coal and rock, cylinder pressure inductor (1) is provided with three piston sensing chips, three piston sensing chips are connected with the piston cylinder of each Independent in cylinder pressure inductor (1) through hold-down nut (11) respectively, cylinder pressure inductor (1) is provided with mounting rod joint (10) with the junction that guide rod (4) is installed, mounting rod joint (10) is provided with the directed bolt (7) of fixed installation guide rod (4), guide rod (4) is installed and is provided with the directed graticule (8) corresponding with directed bolt (7), to guarantee that cylinder pressure inductor (1) direction in installation process does not deflect, cylinder pressure inductor (1) end is provided with and enters the high-pressure oil pipe (2) being connected with three piston sensing chips respectively in cylinder body, high-pressure oil pipe (2) outer end is respectively through T-valve (3) Bonding pressure table (5) or the data converter (13) being connected with data collecting instrument (14) and high-pressure oil pump (9), and three monitoring directions are all furnished with independently high-pressure oil pipe and three-way valve.
2. a kind of coal and rock stress directional monitoring device according to claim 1, is characterized in that: three described piston sensing chips comprise can monitor coal and rock internal bore axially and perpendicular to first piston sensing chip (6-1), the second piston sensing chip (6-2) and the 3rd piston sensing chip (6-3) of any both direction stress intensity of borehole axial and variation simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320618335.0U CN203519230U (en) | 2013-10-08 | 2013-10-08 | Coal-rock mass stress directional monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320618335.0U CN203519230U (en) | 2013-10-08 | 2013-10-08 | Coal-rock mass stress directional monitoring device |
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| CN203519230U true CN203519230U (en) | 2014-04-02 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512693A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Coal and rock mass stress orientation monitoring method and device |
| CN103994846A (en) * | 2014-06-06 | 2014-08-20 | 中国矿业大学 | Device and method for testing surrounding rock stress field distribution |
| CN105841869A (en) * | 2016-06-12 | 2016-08-10 | 哈尔滨工程大学 | Wave glider floating body stress monitoring device and stress calculation method thereof |
| CN106546366A (en) * | 2016-10-09 | 2017-03-29 | 安徽理工大学 | A kind of umbellate form deep hole three-dimensional stress and displacement comprehensive test device |
| CN106546359A (en) * | 2016-11-24 | 2017-03-29 | 中国矿业大学 | A kind of surrouding rock stress measuring system |
| CN106989849A (en) * | 2017-05-15 | 2017-07-28 | 山东科技大学 | Single hole coal and rock directional stress is distributed and the integral monitoring device of deformation and monitoring method |
| CN108150209A (en) * | 2018-01-28 | 2018-06-12 | 大连海事大学 | A kind of intelligent anchor rod for being suitable for protecting and measuring Tunnel Stability |
| CN108918012A (en) * | 2018-07-16 | 2018-11-30 | 中铁十四局集团有限公司 | One kind being used for Shield-bored tunnels country rock Disturbance stress monitoring method |
| CN109489879A (en) * | 2018-11-23 | 2019-03-19 | 黑龙江科技大学 | Coal mine rock burst monitoring device and monitoring method |
| CN113984268A (en) * | 2021-11-08 | 2022-01-28 | 安徽隧派智能科技有限公司 | Hole wall strain type three-dimensional real-time stress monitoring device |
| CN115615841A (en) * | 2022-10-28 | 2023-01-17 | 尤洛卡（山东）矿业科技有限公司 | A Circumferential Coupling Axial Constraint Stress Monitoring Device |
| CN116835474A (en) * | 2023-07-04 | 2023-10-03 | 徐州弘毅科技发展有限公司 | Anti-over-top two-stage range-extending three-component stress meter and use method thereof |
| CN119688131A (en) * | 2025-02-26 | 2025-03-25 | 山东科岳科技有限公司 | Coal rock mass stress monitoring device and system |
-
2013
- 2013-10-08 CN CN201320618335.0U patent/CN203519230U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512693A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Coal and rock mass stress orientation monitoring method and device |
| CN103994846A (en) * | 2014-06-06 | 2014-08-20 | 中国矿业大学 | Device and method for testing surrounding rock stress field distribution |
| CN103994846B (en) * | 2014-06-06 | 2016-08-24 | 中国矿业大学 | Stress field of the surrounding rock distribution tester and method |
| CN105841869A (en) * | 2016-06-12 | 2016-08-10 | 哈尔滨工程大学 | Wave glider floating body stress monitoring device and stress calculation method thereof |
| CN106546366A (en) * | 2016-10-09 | 2017-03-29 | 安徽理工大学 | A kind of umbellate form deep hole three-dimensional stress and displacement comprehensive test device |
| CN106546366B (en) * | 2016-10-09 | 2019-02-19 | 安徽理工大学 | An umbrella-shaped deep hole three-dimensional stress and displacement comprehensive testing device |
| CN106546359A (en) * | 2016-11-24 | 2017-03-29 | 中国矿业大学 | A kind of surrouding rock stress measuring system |
| CN106546359B (en) * | 2016-11-24 | 2018-12-21 | 中国矿业大学 | A kind of surrouding rock stress measuring system |
| CN106989849B (en) * | 2017-05-15 | 2022-09-13 | 山东科技大学 | Single-hole coal-rock mass directional stress distribution and deformation integrated monitoring device and monitoring method |
| CN106989849A (en) * | 2017-05-15 | 2017-07-28 | 山东科技大学 | Single hole coal and rock directional stress is distributed and the integral monitoring device of deformation and monitoring method |
| CN108150209A (en) * | 2018-01-28 | 2018-06-12 | 大连海事大学 | A kind of intelligent anchor rod for being suitable for protecting and measuring Tunnel Stability |
| CN108918012A (en) * | 2018-07-16 | 2018-11-30 | 中铁十四局集团有限公司 | One kind being used for Shield-bored tunnels country rock Disturbance stress monitoring method |
| CN108918012B (en) * | 2018-07-16 | 2020-07-28 | 中铁十四局集团有限公司 | Method for monitoring disturbance stress of surrounding rock of subway shield tunnel |
| CN109489879A (en) * | 2018-11-23 | 2019-03-19 | 黑龙江科技大学 | Coal mine rock burst monitoring device and monitoring method |
| CN113984268A (en) * | 2021-11-08 | 2022-01-28 | 安徽隧派智能科技有限公司 | Hole wall strain type three-dimensional real-time stress monitoring device |
| CN115615841A (en) * | 2022-10-28 | 2023-01-17 | 尤洛卡（山东）矿业科技有限公司 | A Circumferential Coupling Axial Constraint Stress Monitoring Device |
| CN116835474A (en) * | 2023-07-04 | 2023-10-03 | 徐州弘毅科技发展有限公司 | Anti-over-top two-stage range-extending three-component stress meter and use method thereof |
| CN119688131A (en) * | 2025-02-26 | 2025-03-25 | 山东科岳科技有限公司 | Coal rock mass stress monitoring device and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20150603 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20150603 |
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| RGAV | Abandon patent right to avoid regrant |