CN211602354U - Test system for simulating deformation and damage of aquifer top plate caused by well water recharge - Google Patents
Test system for simulating deformation and damage of aquifer top plate caused by well water recharge Download PDFInfo
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- CN211602354U CN211602354U CN201922307342.9U CN201922307342U CN211602354U CN 211602354 U CN211602354 U CN 211602354U CN 201922307342 U CN201922307342 U CN 201922307342U CN 211602354 U CN211602354 U CN 211602354U
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Abstract
The utility model provides a test system for simulating deformation and damage of a water-bearing stratum top plate caused by well water recharge, which comprises a water-bearing stratum simulation unit, a recharge condition control unit and a test monitoring unit; the aquifer simulation unit comprises a transparent model box and a recharge well pipe, an aquifer and a soil top plate are arranged in the model box, and the recharge well pipe is inserted into the soil top plate and extends into the aquifer; the recharging condition control unit comprises a suspension liquid control device and a water head adjusting device, the suspension liquid control device comprises a suspension liquid control chamber and an air compressor, the suspension liquid control chamber is respectively connected with the air compressor and a recharging well pipe, and the water head adjusting device comprises a water inlet and outlet water head controller; the test monitoring unit comprises a plurality of strain gauges and a plurality of water head height observers, wherein the strain gauges are arranged in the earthen top plate. The utility model has the advantages that: the method simulates the damage of the soil-made roof caused by overlarge underground recharge water pressure, and researches the physical blockage problem and the water-bearing stratum roof damage mechanism caused by blockage.
Description
Technical Field
The utility model relates to a groundwater recharge technical field especially relates to a simulation well water recharge causes test system that aquifer roof warp and destroys.
Background
The development and utilization of underground water geothermal energy are mainly suitable for areas with abundant underground water, and the underground water ground source heat pump system is generally adopted for development and utilization, and the adopted heat extraction technology can be divided into a closed type and an open type, wherein the closed type is to bury a buried pipe into the underground water and not extract the underground water for heat exchange; the open type underground water ground source heat pump system directly extracts underground water, extracts how much underground water needs to be recharged according to the utilization principle of 'heat taking without water taking' of underground water geothermal energy, and prevents the problems of underground water exhaustion, ground subsidence and the like caused by excessive underground water utilization. In fact, a plurality of uncertain factors can occur in the groundwater recharging process, so that the recharging efficiency is low and the recharging effect is poor.
The most common problem of groundwater recharge is the blockage caused by recharge, and recharge blockage can be divided into physical blockage, chemical blockage and biological blockage according to different blockage modes, wherein the physical blockage is caused by the fact that a large amount of suspended fine particles are contained in recharge water and are attached to fine pores in an aquifer in the recharge process to cause blockage; the chemical blockage is mainly characterized in that the recharge water contains a large amount of metal cations, and the metal cations are subjected to chemical reaction in an aquifer to cause pore blockage; the biological blockage is caused by the breeding of microorganisms in the recharge water to block the vicinity of the recharge well. The direct result that the aquifer blocks up leads to the aquifer pressure imbalance in the recharge process, and too much pressure can cause the aquifer structure to break, and the ground near the recharge well produces and subsides.
Secondly, in the groundwater recharge process, due to the fact that the recharge water pressure is too large, stress of the water-proof top plate is not uniform directly, and the ground is raised and damaged, so that the use risk of the groundwater source heat pump system is increased, and the later-stage operation and maintenance cost of the heat pump is also increased.
The influence of various uncertain factors on recharging in the recharging process is accurately mastered, so that the practical groundwater recharging is guided, the three modes of field test, numerical simulation and indoor model test are generally adopted for research, although the field test is more suitable for the real situation, a large amount of time and money are needed, and the use is not cost-effective; the numerical simulation mode is simple, but the simulated situation cannot truly reflect the basic situation, and the indoor model just combines the two situations, thereby being helpful for research work.
In the prior art, the research on the blockage of an underground water recharge system is less, wherein a patent document CN204831748U discloses a full-automatic underground water recharge blockage experimental device; patent document CN203905903U discloses a dosing device for preventing clogging of groundwater recharge; patent document CN204873911U discloses a groundwater recharge device for preventing gas phase blockage. The above patent is mainly to the simulation of recharge technique, recharge well and the utility model of recharge jam, and the test device instrument to the structural change that the aquifer that arouses among the groundwater recharge process takes place then research less.
SUMMERY OF THE UTILITY MODEL
In order to study among the recharge well aquifer block up and recharge the too big aquifer water proof roof that causes and take place to warp and destroy the problem, the embodiment of the utility model provides a simulation well water recharge arouses aquifer roof warp and destroy test system.
The embodiment of the utility model provides a simulation well water recharge causes test system that aquifer roof warp and destroys, including aquifer simulation unit, recharge condition control unit and test monitoring unit;
the aquifer simulation unit comprises a transparent model box and a recharge well pipe, an aquifer is arranged at the bottom in the model box, a soil top plate is arranged on the aquifer and comprises a plurality of stacked soil layers with different colors, the recharge well pipe is inserted into the soil top plate and extends into the aquifer, and the recharge well pipe is positioned in the aquifer and is divided into flower pipe sections;
the recharging condition control unit comprises a suspension liquid control device and a water head adjusting device, the suspension liquid control device comprises a suspension liquid control chamber and an air compressor, the suspension liquid control chamber is respectively connected with the air compressor and the recharging well pipe, suspension liquid with coloring particles is stored in the suspension liquid control chamber, and the water head adjusting device comprises a water inlet water head controller and a water outlet water head controller which are respectively connected to two side walls of the aquifer;
the test monitoring unit comprises a plurality of strain gauges and a plurality of water head height observation instruments, wherein the strain gauges and the water head height observation instruments are arranged in the earthen top plate, and each water head height observation instrument is connected into the water-containing layer.
Further, each high visulizer of flood peak includes rubber pipe, graduated tube and laser range finder, rubber pipe one end inserts aquifer in the mold box, the other end is connected the graduated tube lower extreme, the graduated tube upper end is aimed at the laser range finder, all high visulizers of flood peak equal vertical fixation in observation board on.
Further, still include data collection and arrangement unit, data collection and arrangement unit include high-speed camera, computer and respectively with strain receiver and the high receiver of flood peak that the computer is connected, high-speed camera set up in one side of mold box, all strainometers are connected respectively to the strain receiver, all laser range finders are connected respectively to the high receiver of flood peak.
Furthermore, the outer wall of the model box is provided with a plurality of test holes communicated with the aquifer, and all the test holes are arranged at the same height.
Furthermore, all the strain gauges are respectively arranged in each soil layer of the soil top plate, the plurality of strain gauges in each soil layer are arranged at the same height, and the strain gauges between the two adjacent soil layers are in one-to-one up-and-down correspondence.
Further, the suspension control chamber is connected with the recharging well pipe through an injection conduit, a stirrer is arranged in the suspension control chamber, the injection conduit is provided with an injection valve and a flowmeter, the air compressor is connected with the suspension control chamber through a gas conduit, and the gas conduit is provided with a gas valve.
Furthermore, the water inlet head controller is fixed on the console, the water inlet head controller is connected with the model box through a water inlet conduit and is connected into the aquifer, and the arrangement mode of the water outlet head controller is the same as that of the water inlet head controller.
Furthermore, two buffer zones protruding outwards are arranged at the bottom of the model box, the two buffer zones are respectively a water inlet buffer zone and a water outlet buffer zone, one side of the water inlet buffer zone is adjacent to the aquifer, a water inlet filter screen is arranged between the water inlet buffer zone and the aquifer, and the other side of the water inlet buffer zone is connected with the water inlet guide pipe; one side of the water outlet buffer area is adjacent to the aquifer, a water outlet filter screen is arranged between the aquifer and the aquifer, the other side of the water outlet buffer area is connected with a water outlet guide pipe, and the water outlet guide pipe is connected with the water outlet water head controller.
Furthermore, a clay layer is arranged between the outer wall of the recharge well pipe and the soil-made top plate, and a backfill filter material is arranged between the outer wall of the flower pipe section of the recharge well pipe and the aquifer.
Further, an LED light source is arranged at the bottom of the model box.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the utility model discloses a simulation well water recharge arouses test system that aquifer roof warp and destroys, sets up aquifer, native roof and recharge well casing in the model box, simulates groundwater recharge process, controls the suspension concentration in the recharge water in the recharge well casing through the suspension controlling means and studies the physics of groundwater recharge and blocks up the problem, can study the aquifer roof that the recharge blocks up and causes and destroy the mechanism simultaneously; the aquifer recharge pressure can be controlled through the water inlet water head controller and the water outlet water head controller, so that the deformation and damage mechanism of the pressure in the recharge process to the aquifer top plate can be researched; in addition, the actual change of the aquifer is recorded through the high-speed camera, the stress deformation condition of the soil top plate is monitored through the strain gauge, the water head height of different positions of the aquifer is recorded through the water head height control instrument, and therefore the penetration, the strain and the deformation of the top plate during the recharge process are researched, and the research is carried out by combining the three parts, and the method is more meaningful.
Drawings
FIG. 1 is a schematic diagram of a test system for simulating deformation and damage of a top plate of an aquifer caused by well water recharge according to the present invention;
fig. 2 is a schematic diagram of the aquifer simulation unit of fig. 1.
In the figure: 1-stirrer, 2-gas valve, 3-gas conduit, 4-air compressor, 5-suspension control chamber, 6-liquid injection valve, 7-flowmeter, 8-liquid injection conduit, 9-recharge well pipe, 10-strainometer, 11-model box, 12-earth top plate, 13-water inlet filter screen, 14-water inlet buffer zone, 15-water inlet head controller, 16-water inlet conduit, 17-water inlet head control table, 18-base, 19-LED light source, 20-test hole, 21-water-bearing layer, 22-water outlet buffer zone, 23-water outlet filter screen, 24-water outlet head controller, 25-water outlet conduit, 26-control table, 27-rubber conduit, 28-observation plate, 29-graduated tube, 30-laser distance measuring device, 31-water head height receiver, 32-strain receiver, 33-high speed camera, 34-computer, 35-pattern pipe section, 36-backfill filter material and 37-clay layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a test system for simulating deformation and damage of a top plate of an aquifer caused by well water recharge, including an aquifer simulation unit, a recharge condition control unit, a test monitoring unit and a data collecting and sorting unit;
the aquifer simulation unit comprises a transparent model box 11 and a recharge well pipe 9, the model box 11 is fixed on a base 18, and the interior of the model box is used for accommodating an aquifer 21 and a soil top plate 12, wherein the aquifer 21 is arranged at the bottom in the model box 11, and the soil top plate 12 is stacked on the aquifer 21. The earthen top plate 12 comprises a plurality of stacked soil layers with different colors, so that the change of the earthen top plate 12 in the test process can be observed conveniently. The bottom of the model box 11 is further provided with an LED light source 19 fixed on the base 18 for increasing the visibility of the aquifer 21.
The bottom of the model box 11 is provided with two buffer areas protruding outwards, specifically, a water inlet buffer area 14 and a water outlet buffer area 22 which are respectively arranged at two opposite sides of the model box 11. One side of the water inlet buffer zone 14 close to the inner side is adjacent to the aquifer 21, a water inlet filter screen 13 is arranged between the water inlet buffer zone and the aquifer 21, and the water inlet filter screen 13 prevents particles in the aquifer 21 from permeating into the water inlet buffer zone 14; one side of the water outlet buffer area 22 close to the inner side is adjacent to the water-containing layer 21, a water outlet filter screen 23 is arranged between the water outlet buffer area and the water-containing layer 21, and the water outlet filter screen 23 prevents particles in the water-containing layer 21 from permeating into the water outlet buffer area 22.
The recharge well pipe 9 is inserted into the earthen roof 12 and extends into the aquifer 21, and the recharge well pipe 9 is divided into a flower pipe section 35 inside the aquifer 21. In this embodiment, the recharge well pipe 9 is an organic glass pipe, the inner part of the recharge well pipe 9 in the aquifer 21 is uniformly drilled to form the floral pipe section 35, and the size of the drilled hole is smaller than the size of the particles in the aquifer 21. A clay layer 37 is arranged between the outer wall of the recharge well pipe 9 and the soil-made top plate 12, and a backfill filter material 36 is arranged between the outer wall of the flower pipe section 35 of the recharge well pipe 9 and the aquifer 21. The clay layer 37 fills the gap between the outer wall of the recharge well pipe 9 and the soil-made top plate 12, and the backfill filter material 36 fills the gap between the outer wall of the flower pipe section 35 of the recharge well pipe 9 and the aquifer 21, so that the soil-made top plate 12 can be prevented from collapsing.
The recharging condition control unit comprises a suspension liquid control device and a water head adjusting device, the suspension liquid control device comprises a suspension liquid control chamber 5 and an air compressor 4, and the suspension liquid control chamber 5 is respectively connected with the air compressor 4 and the recharging well pipe 9. Specifically, the suspension control chamber 5 is connected with the recharging well pipe 9 through an injection conduit 8, the suspension control chamber 5 is used for inputting suspension into the recharging well pipe 9, a stirrer 1 is arranged in the suspension control chamber 5, and the suspension in the suspension control chamber 5 is stirred through the stirrer 1 to prevent particles in the suspension from precipitating. And the liquid injection guide pipe 8 is provided with a liquid injection valve 6 and a flowmeter 7 for controlling the flow velocity of the suspension and monitoring the flow of the suspension. The air compressor 4 is connected with the suspension control chamber 5 through a gas conduit 3, the gas conduit 3 is provided with a gas valve 2, the air compressor 4 is used for controlling the pressure of the suspension injected into the recharge well pipe 9, and the gas valve 2 is used for controlling the gas inflow.
Colored fine particles are selected as the suspended particles in the suspension control chamber 5, and whether or not the aqueous layer 21 is clogged can be judged by the positions of the colored particles in the aqueous layer 21.
The water head adjusting device comprises a water inlet water head controller 15 and a water outlet water head controller 24 which are respectively connected to two side walls of the aquifer 21, the water inlet water head controller 15 is used for controlling the water head height of the water inlet side of the aquifer 21, and the water outlet water head controller 24 is used for controlling the water head height of the water outlet side of the aquifer 21. The water inlet head controller 15 is fixed on a control console 17, and the water inlet head controller 15 is connected with the model box 11 through a water inlet conduit 16 and is connected into a water-bearing stratum 21. Specifically, one end of the water inlet conduit 16 is connected to the water inlet head controller 15, and the other end is connected to the outer side of the water inlet buffer zone 14.
The outlet water head controller 24 is arranged in the same manner as the inlet water head controller 15. That is, the outlet header controller 24 is provided on another console 26, and the outlet header controller 24 is connected to the model box 11 through an outlet duct 25 and is connected to the aquifer 21. And one end of the water outlet conduit 25 is connected with the water outlet head controller 24, and the other end is connected with the outer side of the water outlet buffer zone 22.
The test monitoring unit comprises a plurality of strain gauges 10 arranged in the earthen top plate 12 and a plurality of water head height observers, and each water head height observer is connected into the aquifer 21.
Specifically, each water head height observation instrument includes rubber pipe 27, graduated tube 29 and laser range finder 30, rubber pipe 27 one end access aquifer 21 in model box 11, the other end is connected graduated tube 29 lower extreme, the alignment of graduated tube 29 upper end laser range finder 30, the equal vertical fixation of graduated tube 29 of all water head height observation instruments is on observation board 28. Here, a test hole 20 is formed in an outer wall of the mold box 11, the rubber pipe 27 is connected to the test hole 20 so as to communicate with the aquifer 21, the laser range finder 30 is used for measuring a head height of the graduated tube 29, and the head height in the graduated tube 29 represents the head height in the aquifer 21.
In the present embodiment, the positions of the strain gauge 10 and the test hole 20 are set as follows: all the strain gauges 10 are respectively arranged in each layer of soil layer of the soil-made top plate 12, the strain gauges 10 are used for monitoring the strain change condition of the soil-made top plates 12 with different depths, a plurality of strain gauges 10 in each soil layer are arranged at the same height, the strain gauges 10 between the two adjacent soil layers correspond up and down one by one, and the strain change of the soil-made top plates 12 with different depths is contrasted and analyzed. All the test holes 20 are arranged at the same height and used for measuring the water head change conditions of the four water-bearing layers 21 at the same height and different intervals.
The data collecting and arranging unit comprises a high-speed camera 33, a computer 34, and a strain receiver 32 and a water head height receiver 31 which are respectively connected with the computer 34, wherein the high-speed camera 33 is arranged on one side of the model box 11 and is used for shooting the change condition of the aquifer 21 in real time. The strain receivers 32 are respectively connected with all the strain gauges 10, and the strain receivers 32 are used for receiving the strain condition in the earthen top plate 12 in real time; the water head height receiver 31 is respectively connected with all the laser range finders 30, and the water head height receiver 31 is used for receiving the water head change condition in the aquifer 21. The computer 34 is used to quickly process and store the measurement data for testing the strain gauges 10 and the laser rangefinder 31.
The utility model discloses a simulation well water recharge causes aquifer roof to warp and the concrete application method of the test system who destroys does:
(1) preparing soil layers with various colors as soil samples of the soil top plate 12 for standby according to test requirements, and preparing soil samples of the aquifer 21;
(2) checking the air tightness of the test system, preventing the conditions of air leakage, water leakage and the like in the experimental process, and closing all valves;
(3) mounting the manufactured earthen roof plate 12 and aquifer soil sample in a model box 11, and coating vaseline on the edge of the earthen roof plate 12 when the earthen roof plate 12 is mounted in order to prevent water in the aquifer 21 from overflowing from the model box 11;
(4) controlling a preset water head height through the water inlet head controller 15 and opening a valve of the water inlet head controller 15 to enable water to flow into the soil sample of the aquifer 21 from the water inlet head controller 15 until the soil sample of the aquifer 21 is completely saturated;
(5) adding suspended coloring particles with certain concentration into the suspension control chamber 5, turning on the stirrer 1 to prevent the suspended particles from precipitating in a static state, and turning on the air compressor 4 to set the pressure in the suspension control chamber 5;
(6) opening all valves, shooting the change condition of the aquifer 21 in real time through the high-speed camera 33, monitoring the strain condition in the soil roof 12 through the stress meter 10, monitoring the water head change condition in the aquifer 21 through the laser range finder 30, and acquiring the frequency of data in a dense-first and sparse-later mode according to the test condition;
(7) the analytical study is conducted by means of data recorded by the computer 34 and the acquired images.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a simulation well water recharge causes test system that aquifer roof warp and destroys which characterized in that: the device comprises an aquifer simulation unit, a recharge condition control unit and a test monitoring unit;
the aquifer simulation unit comprises a transparent model box and a recharge well pipe, an aquifer is arranged at the bottom in the model box, a soil top plate is arranged on the aquifer and comprises a plurality of stacked soil layers with different colors, the recharge well pipe is inserted into the soil top plate and extends into the aquifer, and the recharge well pipe is positioned in the aquifer and is divided into flower pipe sections;
the recharging condition control unit comprises a suspension liquid control device and a water head adjusting device, the suspension liquid control device comprises a suspension liquid control chamber and an air compressor, the suspension liquid control chamber is respectively connected with the air compressor and the recharging well pipe, suspension liquid with coloring particles is stored in the suspension liquid control chamber, and the water head adjusting device comprises a water inlet water head controller and a water outlet water head controller which are respectively connected to two side walls of the aquifer;
the test monitoring unit comprises a plurality of strain gauges and a plurality of water head height observation instruments, wherein the strain gauges and the water head height observation instruments are arranged in the earthen top plate, and each water head height observation instrument is connected into the water-containing layer.
2. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: each high visulizer of flood peak includes rubber conduit, graduated tube and laser range finder, rubber conduit one end inserts aquifer in the model box, the other end is connected the graduated tube lower extreme, the graduated tube upper end is aimed at laser range finder, all high visulizers of flood peak's graduated tube is vertical to be fixed in on the observation board.
3. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 2, wherein: still include data acquisition and arrangement unit, data acquisition and arrangement unit include high-speed camera, computer and respectively with strain receiver and the high receiver of flood peak that the computer is connected, high-speed camera set up in one side of model case, strain receiver connects all strainometers respectively, all laser range finders are connected respectively to the high receiver of flood peak.
4. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 2, wherein: and a plurality of test holes communicated with the aquifer are formed in the outer wall of the model box, and all the test holes are arranged at the same height.
5. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: all strain gauges set up respectively in each layer soil horizon of native roof, and a plurality of strain gauges of each soil horizon equal altitude set up, and the strain gauge between the adjacent two-layer soil horizon corresponds from top to bottom one by one.
6. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: the suspension control chamber is connected with the recharging well pipe through an injection conduit, a stirrer is arranged in the suspension control chamber, the injection conduit is provided with an injection valve and a flowmeter, the air compressor is connected with the suspension control chamber through a gas conduit, and the gas conduit is provided with a gas valve.
7. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: the water inlet head controller is fixed on the console and is connected with the model box through a water inlet conduit and is connected into the aquifer.
8. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 7, wherein: the bottom of the model box is provided with two buffer zones which protrude outwards, the two buffer zones are a water inlet buffer zone and a water outlet buffer zone respectively, one side of the water inlet buffer zone is adjacent to the aquifer, a water inlet filter screen is arranged between the water inlet buffer zone and the aquifer, and the other side of the water inlet buffer zone is connected with the water inlet guide pipe; one side of the water outlet buffer area is adjacent to the aquifer, a water outlet filter screen is arranged between the aquifer and the aquifer, the other side of the water outlet buffer area is connected with a water outlet guide pipe, and the water outlet guide pipe is connected with the water outlet water head controller.
9. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: and a clay layer is arranged between the outer wall of the recharge well pipe and the soil-made top plate, and a backfill filter material is arranged between the outer wall of the flower pipe section of the recharge well pipe and the aquifer.
10. The test system for simulating deformation and damage of the top plate of the aquifer caused by well water recharge as claimed in claim 1, wherein: and an LED light source is arranged at the bottom of the model box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922307342.9U CN211602354U (en) | 2019-12-20 | 2019-12-20 | Test system for simulating deformation and damage of aquifer top plate caused by well water recharge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922307342.9U CN211602354U (en) | 2019-12-20 | 2019-12-20 | Test system for simulating deformation and damage of aquifer top plate caused by well water recharge |
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| CN211602354U true CN211602354U (en) | 2020-09-29 |
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| CN201922307342.9U Expired - Fee Related CN211602354U (en) | 2019-12-20 | 2019-12-20 | Test system for simulating deformation and damage of aquifer top plate caused by well water recharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987363A (en) * | 2019-12-20 | 2020-04-10 | 中国地质大学（武汉） | Test system for simulating deformation and damage of aquifer top plate caused by well water recharge |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987363A (en) * | 2019-12-20 | 2020-04-10 | 中国地质大学（武汉） | Test system for simulating deformation and damage of aquifer top plate caused by well water recharge |
| CN110987363B (en) * | 2019-12-20 | 2024-05-14 | 中国地质大学（武汉） | Test system for simulating deformation and damage of top plate of aquifer caused by recharging well water |
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Granted publication date: 20200929 Termination date: 20211220 |