Four-water simulation indoor experiment device for subsidence area

Abstract

The utility model belongs to the technical field of simulation test devices, and particularly relates to a subsidence area four-water simulation indoor experiment device which comprises a base, a glass box body fixedly connected to the base, a sunlight and rainfall simulation device arranged on the inner wall of the top of the glass box body, a circulating temperature control device arranged on the side wall of the glass box body and a soil simulation device arranged at the bottom of the glass box body. A water supply system and a water recovery system are arranged on the two sides outside the glass box body respectively, the water outlet end of the water supply system is communicated with the water inlet end of the soil simulation device, the water outlet end of the soil simulation device is communicated with the water inlet end of the water recovery system, and the water inlet end of the water recovery system is communicated with a water outlet flow meter and a water quality sensor; an observation device is arranged on the outer side of the glass box body. The device can monitor the water quality of the tetrahydrate while simulating the conversion of the tetrahydrate in the coal mining subsidence area.

Description

Technical Field

[0001] The utility model belongs to the technical field of simulation test devices, and in particular relates to a four-water simulation indoor test device for a subsidence area. Background Art

[0002] The four waters refer to atmospheric water (precipitation), surface water (surface runoff water), soil water and groundwater. The transformation of the "four waters" refers to the mutual transformation and replenishment relationship between atmospheric water (precipitation), surface water, soil water and groundwater. At present, the domestic experimental monitoring equipment for measuring atmospheric water (precipitation), surface water (surface runoff water), soil water and groundwater mainly includes siphon rain gauges, tipping bucket rain gauges, runoff meters, soil moisture monitors (TDRs), groundwater detectors and detectors, etc. These equipment are technologically advanced, fully functional and widely used.

[0003] Regarding the transformation of the four waters in coal mining subsidence areas, the on-site environment is relatively complex, resulting in high labor and equipment costs. The existing simulation equipment cannot restore the actual environment well and cannot monitor the water quality of the "four waters". Therefore, there is an urgent need for an indoor experimental device for simulating the four waters in subsidence areas to solve the problem. Utility Model Content

[0004] The utility model aims to provide a four-water simulation indoor experimental device for a subsidence area to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] A four-water indoor experimental device for subsidence area simulation comprises: a base, a glass box is fixedly connected to the base, a sunshine and rainfall simulation device is arranged on the top inner wall of the glass box, a circulating temperature control device is arranged on the side wall of the glass box, a soil simulation device is arranged on the bottom of the glass box, a water supply system and a water recovery system are arranged on both sides of the outside of the glass box, the water outlet of the water supply system is connected with the water inlet of the soil simulation device, the water outlet of the soil simulation device is connected with the water inlet of the water recovery system, the water inlet of the water recovery system is connected with a water outlet flow meter and a water quality sensor, and an observation device is arranged on the outside of the glass box.

[0007] Preferably, the sunshine and rainfall simulation device comprises a top frame, the top frame is fixedly connected to the top inner wall of the glass box, both ends of the top frame are fixedly connected with sunlight lamps, and a rainfall simulation part is provided in the middle of the top frame.

[0008] Preferably, the rainfall simulation part includes a uniform water outlet pipe, the bottom of the uniform water outlet pipe is connected to the water inlet ends of several connecting pipes, the water outlet ends of the connecting pipes are connected to water nozzles, the two ends of the uniform water outlet pipe are respectively connected to the water outlet ends of a water pump, the water inlet end of the water pump is connected to the water outlet end of a valve, the water inlet end of the valve is connected to a second water tank, and the second water tank is fixedly connected to the top frame.

[0009] Preferably, the uniform water outlet pipe comprises a pipe body, a plurality of water outlet holes are evenly spaced along the axial direction of the pipe body, the diameter of the water outlet holes gradually decreases from both ends of the pipe body to the middle, the water outlet holes are connected to the water inlet end of the connecting pipe, and the diameter of the water outlet holes matches the pipe diameter of the connecting pipe;

[0010] Water inlets are respectively provided at both ends of the tube body, and the water inlets are communicated with the corresponding water outlets of the water pump.

[0011] Preferably, the circulating temperature control device includes an air inlet pipe, the air inlet end of the air inlet pipe is connected to the interior of the glass box, the air outlet end of the air inlet pipe is connected to the air inlet end of a gas circulation pump, the air outlet end of the gas circulation pump is connected to the air inlet end of a heating device, the air outlet end of the heating device is connected to the air inlet end of an exhaust pipe, and the air outlet end of the exhaust pipe is connected to the interior of the glass box.

[0012] Preferably, the soil simulation device comprises a soil layer and a clay layer sequentially laid in the glass box from top to bottom, a sinking trough is opened in the middle of the top of the soil layer, and the sinking trough is filled with surface water; an aquifer is provided in the middle of the clay layer, and a coal seam simulation part is provided at the bottom of the clay layer;

[0013] The soil layer, the clay layer, the aquifer and the coal seam simulation part are respectively connected to the water outlet of the water supply system, and the soil layer, the clay layer, the aquifer and the coal seam simulation part are respectively connected to the water inlet of the water recovery system.

[0014] Preferably, the coal seam simulation portion comprises a quartz sand layer, and the top of the quartz sand layer is arranged in contact with the bottom of the clay layer;

[0015] A number of air bags are buried in the quartz sand layer, and the air bags are connected to the air outlet of the bronchus, and the air inlet of the bronchus is connected to the air outlet of the air valve and the flow meter, and the air inlet ends of the air valves and the flow meter are connected to the top of the same main air pipe, and the bottom of the main air pipe is connected to the air outlet of the air pump, and the air pump is fixed to the base, and the air pump is located outside the glass box.

[0016] Preferably, the water supply system includes a hydraulic lifting platform, the fixed end of the hydraulic lifting platform is fixedly connected to the base, the top of the movable end of the hydraulic lifting platform is fixedly connected to a water tank, and the water tank is connected to the water inlet ends of the soil layer, the clay layer, the aquifer and the quartz sand layer through four correspondingly arranged water inlet flow meters.

[0017] Preferably, the water recovery system comprises a main downpipe, which is connected to the water outlets of the soil layer, the clay layer, the aquifer and the quartz sand layer through four correspondingly arranged water outlet pipes; the bottom end of the main downpipe is connected to a water recovery tank, which is fixedly connected to the base;

[0018] The water outlet flow meter and the water quality sensor are connected and arranged in the middle of the water outlet pipe.

[0019] Compared with the prior art, the utility model has the following advantages and technical effects:

[0020] When in use, the coal mining subsidence area is simulated by a soil simulation device, the water flow in the soil simulation device is realized by a water supply system and a water recovery system, the light, rainfall and evaporation of surface water are simulated by a sunshine and rainfall simulation device, and the ambient temperature of the simulated environment is adjusted by a circulating temperature control device to be as close to the actual environment as possible, so that the four-water transformation in the simulated coal mining subsidence area is closer to the actual situation. At the same time, for the water recovered from the soil simulation device, the water quantity and water quality are monitored by a water outlet flow meter and a water quality sensor, and the process of the four-water transformation can also be recorded and monitored by an observation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the uniform water outlet pipe structure of the utility model;

[0024] Among them, 1. glass box; 2. base; 3. hydraulic lifting platform; 4. water tank; 5. air pump; 6. main air pipe; 7. air valve and flow meter; 8. bronchial tube; 9. air bag; 10. main sewer pipe; 11. outlet pipe; 12. outlet flow meter; 13. water quality sensor; 14. observation device; 15. gas circulation pump; 16. heating device; 17. exhaust pipe; 18. intake pipe; 19. inlet flow meter; 20. top frame; 21. fluorescent lamp; 22. second water tank; 23. valve; 24. water pump; 25. uniform outlet pipe; 26. connecting pipe; 27. water nozzle; 28. soil layer; 29. ​​aquifer; 30. clay layer; 31. quartz sand layer; 32. water recovery tank; 2501. pipe body; 2502. outlet hole; 2503. water inlet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1 to Figure 2 The utility model discloses a four-water indoor experimental device for subsidence area simulation, comprising: a base 2, a glass box 1 is fixedly connected to the base 2, a sunshine and rainfall simulation device is arranged on the top inner wall of the glass box 1, a circulating temperature control device is arranged on the side wall of the glass box 1, a soil simulation device is arranged on the bottom of the glass box 1, a water supply system and a water recovery system are arranged on both sides of the outside of the glass box 1, the water outlet of the water supply system is connected with the water inlet of the soil simulation device, the water outlet of the soil simulation device is connected with the water inlet of the water recovery system, the water inlet of the water recovery system is connected with a water outlet flow meter 12 and a water quality sensor 13, and an observation device 14 is arranged on the outside of the glass box 1.

[0028] When in use, the coal mining subsidence area is simulated by a soil simulation device, the water flow in the soil simulation device is realized by a water supply system and a water recovery system, the light, rainfall and evaporation of surface water are simulated by a sunshine and rainfall simulation device, and the ambient temperature of the simulated environment is adjusted by a circulating temperature control device to be as close to the actual environment as possible, so that the four-water transformation in the simulated coal mining subsidence area is closer to the actual situation. At the same time, for the water recovered from the soil simulation device, the water volume and water quality are monitored by a water outlet flow meter 12 and a water quality sensor 13, and the process of the four-water transformation can also be recorded and monitored by an observation device 14.

[0029] According to a further optimized solution, the sunshine and rainfall simulation device comprises a top frame 20 , which is fixedly connected to the top inner wall of the glass box 1 , with daylight lamps 21 fixedly connected to both ends of the top frame 20 , and a rainfall simulation part is provided in the middle of the top frame 20 .

[0030] The daylight lamp 21 is used to simulate the lighting effect, the daylight lamp 21 and the circulating temperature control device cooperate to simulate the evaporation effect, and the rainfall simulation part is used to simulate the rainfall effect.

[0031] To further optimize the solution, the rainfall simulation part includes a uniform water outlet pipe 25, the bottom of the uniform water outlet pipe 25 is connected to the water inlet ends of several connecting pipes 26, the water outlet ends of the connecting pipes 26 are connected to water nozzles 27, both ends of the uniform water outlet pipe 25 are respectively connected to the water outlet ends of the water pump 24, the water inlet end of the water pump 24 is connected to the water outlet end of the valve 23, the water inlet end of the valve 23 is connected to the second water tank 22, and the second water tank 22 is fixedly connected to the top frame 20.

[0032] Water is injected into the uniform water outlet pipe 25 at a certain pressure through two water pumps 24, and water is supplied to each connecting pipe 26 through the uniform water outlet pipe 25, and then the water is sprayed out through the water nozzle 27, thereby simulating the rainfall process.

[0033] Furthermore, the uniform water outlet pipe 25 includes a pipe body 2501, and a plurality of water outlet holes 2502 are evenly spaced along the axial direction on the pipe body 2501, and the diameter of the water outlet holes 2502 gradually decreases from both ends of the pipe body 2501 to the middle, and the water outlet holes 2502 are connected to the water inlet end of the connecting pipe 26, and the diameter of the water outlet holes 2502 matches the diameter of the connecting pipe 26;

[0034] Water inlets 2503 are respectively provided at both ends of the tube body 2501 , and the water inlets 2503 are communicated with the water outlets of the corresponding water pumps 24 .

[0035] In order to ensure that the water spray volume of each water nozzle 27 is consistent, so that the uniformity of rainfall is further improved during the simulated rainfall process, a number of water outlet holes 2502 are arranged on the pipe body 2501, and the aperture of the water outlet hole 2502 gradually decreases from the two ends of the pipe body 2501 to the middle. Water is pumped into the pipe body 2501 by the water pumps 24 at both ends at the same pressure. By arranging the apertures and hole spacings of the several water outlet holes 2502, the amount of water flowing out of each water outlet hole 2502 is more uniform, thereby further improving the uniformity of rainfall.

[0036] To further optimize the solution, the circulating temperature control device includes an air inlet pipe 18, the air inlet end of the air inlet pipe 18 is connected to the interior of the glass box 1, the air outlet end of the air inlet pipe 18 is connected to the air inlet end of the gas circulation pump 15, the air outlet end of the gas circulation pump 15 is connected to the air inlet end of the heating device 16, the air outlet end of the heating device 16 is connected to the air inlet end of the exhaust pipe 17, and the air outlet end of the exhaust pipe 17 is connected to the interior of the glass box 1.

[0037] The air in the glass box 1 is sucked in through the air inlet pipe 18 by the gas circulation pump 15 and then discharged through the exhaust pipe 17, thereby realizing the air circulation in the glass box 1, and the circulating air is heated by the heating device 16 to achieve the purpose of temperature control.

[0038] Further optimizing the scheme, the soil simulation device includes a soil layer 28 and a clay layer 30 laid in the glass box 1 from top to bottom, a sinking trough is opened in the middle of the top of the soil layer 28, and the sinking trough is filled with surface water; an aquifer 29 is provided in the middle of the clay layer 30, and a coal seam simulation part is provided at the bottom of the clay layer 30;

[0039] The soil layer 28, clay layer 30, aquifer 29 and coal seam simulation part are respectively connected to the water outlet of the water supply system, and the soil layer 28, clay layer 30, aquifer 29 and coal seam simulation part are respectively connected to the water inlet of the water recovery system.

[0040] According to a further optimization scheme, the coal seam simulation part includes a quartz sand layer 31, and the top of the quartz sand layer 31 is arranged in contact with the bottom of the clay layer 30;

[0041] A number of air bags 9 are buried in the quartz sand layer 31, and the air bags 9 are connected to the air outlet end of the bronchial tube 8, and the air inlet end of the bronchial tube 8 is connected to the air outlet end of the air valve and the flow meter 7. The air inlet ends of the several air valves and the flow meter 7 are connected to the top of the same main air pipe 6, and the bottom of the main air pipe 6 is connected to the air outlet end of the air pump 5. The air pump 5 is fixedly connected to the base 2, and the air pump 5 is located outside the glass box 1.

[0042] Vaseline, silicone oil and paraffin were used as binders and regulators, clay was used to simulate mudstone layers, and sand, gravel and binders were used to simulate sandstone layers. Soil samples were collected on-site and the soil layer was made by filling and compaction method to restore the in-situ conditions of the sampling points. During the filling process, several soil moisture sensors (not marked in the figure) and traditional mercury pressure gauges (not marked in the figure) were pre-buried in the unsaturated zone to monitor the soil matrix in the model, and several pressure measuring holes (not marked in the figure) were buried in the saturated zone using steel pipes.

[0043] By burying a plurality of air bags 9 in the quartz sand layer 31 and inflating the air bags 9 through the air pump 5, when the air valve is opened, the gas in the air bags 9 is discharged, and the coal mining work can be simulated.

[0044] The inflation degree of the airbag 9 can simulate the amount of coal mined. The air filled into the airbag 9 is measured by a flow meter, thereby controlling the expansion degree of the airbag 9.

[0045] The provision of the quartz sand layer 31 can prevent the airbag 9 from expanding and squeezing the clay layer 30 to cause water flow blockage.

[0046] A further optimized solution is that the water supply system includes a hydraulic lifting platform 3, a fixed end of the hydraulic lifting platform 3 is fixedly connected to the base 2, a water tank 4 is fixedly connected to the top of the movable end of the hydraulic lifting platform 3, and the water tank 4 is connected to the water inlet ends of the soil layer 28, the clay layer 30, the aquifer 29 and the quartz sand layer 31 through four correspondingly arranged water inlet flow meters 19.

[0047] The water tank 4 is driven by the hydraulic lifting platform 3 to adjust its height, thereby achieving control of the boundary water level.

[0048] Further optimizing the scheme, the water recovery system includes a main downpipe 10, which is connected to the water outlets of the soil layer 28, the clay layer 30, the aquifer 29 and the quartz sand layer 31 through four correspondingly arranged water outlet pipes 11; the bottom end of the main downpipe 10 is connected to a water recovery tank 32, which is fixed to the base 2;

[0049] The water outlet flow meter 12 and the water quality sensor 13 are connected and arranged in the middle of the water outlet pipe 11 .

[0050] The observation device 14 includes a high-definition camera, a digital flow meter and a flow calculation controller, which collects data and calculates the collected data through a computer.

[0051] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A four-water simulation indoor experimental device for a subsidence area, characterized in that: include: A base (2) is fixedly connected to a glass box (1), the top inner wall of the glass box (1) is provided with a sunshine and rainfall simulation device, the side wall of the glass box (1) is provided with a circulating temperature control device, the bottom of the glass box (1) is provided with a soil simulation device, the outer sides of the glass box (1) are respectively provided with a water supply system and a water recovery system, the water outlet of the water supply system is connected to the water inlet of the soil simulation device, the water outlet of the soil simulation device is connected to the water inlet of the water recovery system, the water inlet of the water recovery system is connected to a water outlet flow meter (12) and a water quality sensor (13), and an observation device (14) is provided on the outer side of the glass box (1).

2. A subsidence area four-water simulation indoor experimental device according to claim 1, characterized in that: The sunshine and rainfall simulation device comprises a top frame (20), the top frame (20) is fixedly connected to the top inner wall of the glass box (1), both ends of the top frame (20) are fixedly connected to sunlight lamps (21), and a rainfall simulation part is provided in the middle of the top frame (20).

3. A subsidence area four-water simulation indoor experimental device according to claim 2, characterized in that: The rainfall simulation part comprises a uniform water outlet pipe (25), the bottom of the uniform water outlet pipe (25) is connected to the water inlet ends of a plurality of connecting pipes (26), the water outlet ends of the connecting pipes (26) are connected to a water nozzle (27), both ends of the uniform water outlet pipe (25) are respectively connected to the water outlet ends of a water pump (24), the water inlet end of the water pump (24) is connected to the water outlet end of a valve (23), the water inlet end of the valve (23) is connected to a second water tank (22), and the second water tank (22) is fixedly connected to the top frame (20).

4. The indoor experimental device for simulating water in a subsidence area according to claim 1, characterized in that: The circulating temperature control device comprises an air inlet pipe (18), the air inlet end of the air inlet pipe (18) is connected to the interior of the glass box (1), the air outlet end of the air inlet pipe (18) is connected to the air inlet end of a gas circulation pump (15), the air outlet end of the gas circulation pump (15) is connected to the air inlet end of a heating device (16), the air outlet end of the heating device (16) is connected to the air inlet end of an exhaust pipe (17), and the air outlet end of the exhaust pipe (17) is connected to the interior of the glass box (1).

5. The four-water simulation indoor experimental device for subsidence area according to claim 1 is characterized by: The soil simulation device comprises a soil layer (28) and a clay layer (30) which are laid in sequence from top to bottom in the glass box (1); a sinking trough is provided in the middle of the top of the soil layer (28), and the sinking trough is filled with surface water; an aquifer (29) is provided in the middle of the clay layer (30), and a coal seam simulation portion is provided at the bottom of the clay layer (30); The soil layer (28), the clay layer (30), the aquifer (29) and the coal seam simulation part are respectively connected to the water outlet of the water supply system, and the soil layer (28), the clay layer (30), the aquifer (29) and the coal seam simulation part are respectively connected to the water inlet of the water recovery system.

6. A subsidence area four-water simulation indoor experimental device according to claim 5, characterized in that: The coal seam simulation part comprises a quartz sand layer (31), and the top of the quartz sand layer (31) is arranged in contact with the bottom of the clay layer (30); A plurality of air bags (9) are buried in the quartz sand layer (31), the air bags (9) are connected to the air outlet of the bronchial tube (8), the air inlet of the bronchial tube (8) is connected to the air outlet of the air valve and the flow meter (7), the air inlet of the plurality of air valves and the flow meter (7) are connected to the top of the same main air pipe (6), the bottom of the main air pipe (6) is connected to the air outlet of the air pump (5), the air pump (5) is fixedly connected to the base (2), and the air pump (5) is located outside the glass box (1).

7. A subsidence area four-water simulation indoor experimental device according to claim 6, characterized in that: The water supply system comprises a hydraulic lifting platform (3), the fixed end of the hydraulic lifting platform (3) is fixedly connected to the base (2), the top of the movable end of the hydraulic lifting platform (3) is fixedly connected to a water tank (4), and the water tank (4) is connected to the water inlet ends of the soil layer (28), the clay layer (30), the aquifer (29) and the quartz sand layer (31) through four correspondingly arranged water inlet flow meters (19).

8. The indoor experimental device for simulating water in subsidence area according to claim 6, characterized in that: The water recovery system comprises a main downpipe (10), wherein the main downpipe (10) is connected to the water outlet ends of the soil layer (28), the clay layer (30), the aquifer (29) and the quartz sand layer (31) through four correspondingly arranged water outlet pipes (11); the bottom end of the main downpipe (10) is connected to a water recovery tank (32), and the water recovery tank (32) is fixedly connected to the base (2); The water outlet flow meter (12) and the water quality sensor (13) are connected and arranged in the middle of the water outlet pipe (11).

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