Karst collapse column water inrush disaster simulation device and method

Abstract

The application discloses a karst collapse column water inrush disaster simulation device and method, including a support box body and a control mechanism, the support box body is provided with an experimental main body mechanism, the support box body is provided with a water circulation unit; the experimental main body mechanism includes the simulation box of the top open, the front side wall of the simulation box is provided with an observation window, the inside of the simulation box is divided into water-bearing layer chamber, aquiclude chamber and sandstone layer chamber from bottom to top by the first baffle and the second baffle with through holes, the simulation box is also provided with the first collapse column cavity and the second collapse column cavity which are connected in parallel, the second collapse column cavity is connected with the damage zone cavity, the top of the damage zone cavity is provided with a coal seam simulation unit, the whole device can control the coal seam simulation unit and the water circulation unit through the control mechanism, can directly and visually simulate the whole process of water inrush disaster related to collapse column in the real coal seam mining process, improves the prediction accuracy of water inrush disaster data, and predicts and warns the disaster.

Description

Technical Field

[0001] This invention belongs to the field of coal mining technology, specifically relating to a device and method for simulating water inrush disasters in karst collapse columns. Background Technology

[0002] In recent years, with the advancement of science and technology, the equipment, processes, and technologies in coal mine production and construction have been greatly improved. However, coal mine accidents, especially coal mine floor water inrush accidents, still occur frequently. Coal seam floor water inrush is essentially the process by which the confined water beneath the coal seam breaks through the barrier of the floor aquitard along the internal channels of the rock mass, and surges upward into the goaf of the working face in a sudden, slow, or delayed manner.

[0003] In existing operations, coal mining inevitably encounters the presence of collapse columns. Collapse columns pose a safety hazard and obstacle to the progress of underground coal mining operations. In underground coal mines, the rock strata inside and around the collapse column are severely fractured and seeping water, thereby increasing the risk of mine disasters such as water intrusion, collapse, and gas explosion.

[0004] However, existing water inrush prediction methods are only experimental simulations for relatively traditional terrains and are not accurate enough for simulating more complex underground environments, including collapse columns. In particular, when mining coal seams, the mining process also affects the underground structure, resulting in inaccurate predictions of mine water inrush volume and regular water inflow. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a karst collapse column water inrush disaster simulation device and method, which can solve the technical problems of inaccurate environmental simulation and large prediction deviations in mine water inrush volume and regular water inflow volume in existing simulation devices and methods.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A karst collapse column water inrush disaster simulation device includes a support box and a control mechanism. The top of the support box is equipped with the main experimental mechanism, and the support box is equipped with a water circulation unit.

[0008] The main experimental structure includes a simulation box with an open top, an observation window on the front wall of the simulation box, and a first partition and a second partition arranged from top to bottom inside the simulation box, with multiple through holes on the first partition and the second partition.

[0009] The space between the first partition and the bottom of the box is an aquifer chamber, the space between the first partition and the second partition is an impermeable chamber, and the space between the second partition and the top of the box is a sandstone chamber.

[0010] The first subsided column cavity and the second subsided column cavity are arranged in parallel in the simulation box, and the second subsided column cavity is connected with a damage zone cavity;

[0011] The bottom end of the first subsided column cavity is arranged at the bottom of the simulation box, and the top end of the first subsided column cavity penetrates the first partition plate and the second partition plate in sequence and extends to outside of the top of the simulation box; the bottom end of the second subsided column cavity is connected with the first subsided column cavity in communication, and the top end of the second subsided column cavity penetrates the first partition plate and the second partition plate in sequence and is connected with the bottom of the damage zone cavity arranged in the sandstone layer cavity in communication, and the top of the damage zone cavity is provided with a coal seam simulation unit;

[0012] The control mechanism comprises a controller, a coal seam control assembly and a water circulation control assembly connected with the controller; the coal seam control assembly is used for controlling the coal seam simulation unit; and the water circulation control assembly is used for controlling the water circulation unit.

[0013] The application also comprises the following technical features:

[0014] The coal seam simulation unit comprises a driving wheel, a driven wheel arranged in parallel in the damage zone cavity and a chain belt used for simulating the coal seam and connected with the driving wheel and the driven wheel in cooperation, the driving wheel shaft of the driving wheel and the driven wheel shaft of the driven wheel all penetrate the front and rear side walls of the damage zone cavity, and the upper surface of the chain belt protrudes from the top of the damage zone cavity;

[0015] The rear side wall of the simulation box is provided with a horizontal support plate outside; the coal seam control assembly comprises a speed reducer arranged on the horizontal support plate and a first liquid level sensor arranged at the bottom of the damage zone cavity; the input end of the speed reducer is connected with a motor, and the output end of the speed reducer is connected with the driving wheel through the driving wheel shaft and the rear side wall of the simulation box;

[0016] The first liquid level sensor and the motor are connected with the controller respectively.

[0017] The water circulation unit comprises a water tank arranged in the support box body, the water tank is connected with the aquifer cavity in communication through a water supply pipe; the top of the first subsided column cavity is connected with the water tank in communication through a backwater pipe; and a first water valve is arranged on the water tank;

[0018] The water circulation control assembly comprises a water pump and a second liquid level sensor, the water pump is arranged in the support box body and connected with the water tank, and the second liquid level sensor is arranged on the lower surface of the first partition plate;

[0019] The water pump and the second liquid level sensor are connected with the controller respectively.

[0020] The water supply pipe is provided with a second water valve connected with the controller.

[0021] The destruction zone cavity is in the shape of a bucket and the bottom is arc-shaped.

[0022] The diameter of the through hole is 3-5 mm, and the porosity of the first and second partitions is 60-70%.

[0023] The part of the first collapse column cavity in the aquifer chamber is in the shape of an inverted funnel, the included angle between the inclined side wall of the first collapse column cavity and the central axis of the first collapse column cavity is 60-75°, and the side wall of the inverted funnel-shaped part of the first collapse column cavity is in the shape of a net.

[0024] The bottom of the second collapse column cavity is connected with the inclined side wall of the first collapse column cavity through a connecting cavity, and the included angle between the upper wall of the connecting cavity and the central axis of the second collapse column cavity is 50-60°.

[0025] The outer surface of the chain belt is distributed with a plurality of irregular protrusions.

[0026] The support box body is provided with a control panel connected with the controller for displaying experimental data and the working state of the control mechanism.

[0027] A simulation method of the karst collapse column water inrush disaster simulation device, specifically comprising the following steps:

[0028] Step one: filling medium, filling the corresponding medium in the aquifer chamber, the aquifuge chamber, the sandstone layer chamber, the first collapse column cavity, the second collapse column cavity and the destruction zone cavity;

[0029] Step two: pre-watering, starting the control mechanism, opening the water circulation control assembly through the controller to supply water to the simulation box, and when the second liquid level sensor senses the water level, closing the water circulation control assembly to stop continuously supplying water to the simulation box;

[0030] Step three: starting the simulation experiment, starting the control mechanism again to continuously supply water to the simulation box, and when the first liquid level sensor senses the water level, controlling the coal seam simulation unit to move through the coal seam control assembly;

[0031] Step four: real-time recording, continuously supplying water to the experimental main body mechanism, and recording the water spraying conditions of the first collapse column cavity, the second collapse column cavity and the destruction zone cavity;

[0032] Step five: device drainage, draining the water in the experimental main body mechanism back to the water tank through the water circulation control assembly.

[0033] Compared with the prior art, the present application has the following technical effects:

[0034] The present application simulates the coal seam mining through the multi-layer structure of the control mechanism and the experimental main body, and observes the geological change through the observation window. The overall device has the advantages of simple structure and easy observation, and simulates the coal mining process through the control mechanism controlling the coal seam simulation unit and the water circulation unit, can directly and visually simulate the whole process of water inrush disaster related to collapse column in the coal seam mining process, and improve the prediction accuracy of disaster data such as mine water inrush and frequent water inflow in the coal seam mining process. Finally, the disaster can be accurately predicted and warned according to the simulation, and it is beneficial to post-disaster rescue and repair. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A perspective structural schematic view of the karst collapse column water inrush disaster simulation device provided by the embodiment of the present application is shown in the figure.

[0036] Figure 2 A plane structural schematic view of the karst collapse column water inrush disaster simulation device provided by the embodiment of the present application is shown in the figure.

[0037] Figure 3 A partial top view structural schematic view of the karst collapse column water inrush disaster simulation device provided by the embodiment of the present application is shown in the figure.

[0038] Figure 4 A flowchart of a coal seam disaster simulation method provided by the embodiment of the present application is shown in the figure.

[0039] The meanings of the various reference numbers in the figure are as follows:

[0040] 1, support box, 3, experimental main body mechanism, 4, water circulation unit, 5, control panel;

[0041] 201, coal seam control assembly, 202, water circulation control assembly;

[0042] 2011, speed reducer, 2012, first liquid level sensor, 2013, motor, 2021, water pump, 2022, second liquid level sensor;

[0043] 300, simulation box, 301, observation window, 302, first partition, 303, second partition, 304, aquifer chamber, 305, aquiclude chamber, 306, sandstone layer chamber, 307, first collapse column cavity, 308, second collapse column cavity, 309, damage zone cavity, 310, coal seam simulation unit, 311, horizontal support plate, 312, connecting cavity;

[0044] 3101, driving wheel, 3102, driven wheel, 3103, chain belt;

[0045] 400, water tank, 401, water supply pipe, 402, return pipe, 403, first water valve, 404, second water valve.

[0046] The specific content of the present application is further explained in detail in the following combined with examples. DETAILED DESCRIPTION

[0047] According to the above technical solution, the specific embodiments of the present application are given below, and it should be noted that the present application is not limited to the following specific embodiments, and any equivalent variations made on the basis of the technical solutions of the present application fall within the protection scope of the present application.

[0048] In the present application, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements, objects or method steps listed before the terms cover the elements, objects or method steps listed after the terms and their equivalents, and do not exclude other elements, objects or method steps. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Unless stated otherwise, the orientation terms such as "upper", "lower", "left", "right" and the like generally refer to the definition with respect to the drawing surface in the corresponding drawing, and "inner" and "outer" refer to the inner and outer contours of the corresponding parts.

[0049] Embodiment:

[0050] The present embodiment gives a karst collapse column water inrush disaster simulation device, as shown in Figures 1 to 3 The karst collapse column water inrush disaster simulation device comprises a support box body 1 and a control mechanism, the top of the support box body 1 is provided with an experimental main body mechanism 3, and the support box body 1 is provided with a water circulation unit 4 inside;

[0051] The experimental main body mechanism 3 comprises an open-top simulation box 300, an observation window 301 is arranged on the front side wall of the simulation box 300, a first partition plate 302 and a second partition plate 303 are arranged inside the simulation box 300 from top to bottom, and a plurality of through holes are formed in the first partition plate 302 and the second partition plate 303;

[0052] The space between the first partition plate 302 and the bottom of the box is a water-bearing layer chamber 304, the space between the first partition plate 302 and the second partition plate 303 is a water-resisting layer chamber 305, and the space between the second partition plate 303 and the top of the box is a sandstone layer chamber 306;

[0053] The first collapse column cavity 307 and the second collapse column cavity 308 are arranged in the simulation box 300 in parallel, and the second collapse column cavity 308 is connected with the damage zone cavity 309;

[0054] The bottom end of the first collapse column cavity 307 is arranged at the bottom of the simulation box 300, the top end of the first collapse column cavity 307 penetrates the first partition plate 302 and the second partition plate 303 in sequence and extends to outside of the top of the simulation box 300, the bottom end of the second collapse column cavity 308 is communicated with the first collapse column cavity 307, the top end of the second collapse column cavity 308 penetrates the first partition plate 302 and the second partition plate 303 in sequence and is communicated with the bottom of the damage zone cavity 309 arranged in the sandstone layer cavity 306, and the top of the damage zone cavity 309 is provided with the coal seam simulation unit 310.

[0055] The control mechanism comprises a controller, a coal seam control assembly 201 and a water circulation control assembly 202 connected with the controller, the coal seam control assembly 201 is used for controlling the coal seam simulation unit 310, and the water circulation control assembly 202 is used for controlling the water circulation unit 4.

[0056] In the embodiment, the simulation box 300 is a hollow box structure with an open top, and the observation window 301 is provided for the operator to observe the inside of the simulation box 300. The observation window 301 can generally be made of transparent materials such as organic glass, tempered glass, etc. The first partition plate 302 is a horizontally placed flat plate, and the second partition plate 303 is a horizontally placed irregular plate. The through holes are provided to facilitate the entry of liquid into each chamber. The experimental main body mechanism 3 is mainly used to simulate several main working conditions that may be encountered during coal mining, and its main components mainly include the aquifer chamber 304, the aquitard chamber 305, the sandstone layer chamber 306, the first subsided column chamber 307, the second subsided column chamber 308, the damage zone chamber 309, and the coal seam simulation unit 310. Among them, the aquifer chamber 304 simulates the water-rich hierarchical structure in the geological structure. In geology, the aquifer generally refers to the saturated layer below the soil aeration layer, and the medium pore of which is completely filled with water. The aquitard chamber 305 simulates the rock layer structure above the aquifer in the geological structure. The aquitard refers to the rock layer that maintains the continuity of the pre-mining rock layer and its water resistance performance. The sandstone layer chamber 306 simulates the ordinary soil rock layer mechanism or the rock layer structure far away from the aquifer in the geological structure. The coal seam simulation unit 310 can be used to simulate the rock layer structure containing coal mineral resources in the geological structure. The first subsided column 305 and the second subsided column 306 simulate the columnar structure of the subsided column in the geological structure. The subsided column is a columnar collapse body formed by the collapse of the overlying rock layer due to the dissolution of the underlying carbonate rock and other soluble rocks by underground water. In specific embodiments, the first subsided column chamber 307 is used to simulate a naturally formed subsided column, and the second subsided column chamber 308 is used to simulate a concealed subsided column caused by coal mining. The damage zone chamber 309 is used to simulate the part of the geological hierarchy that is damaged due to the mining of the coal seam in the geological structure. The damage zone refers to the rock layer in which the continuity of the floor rock layer is destroyed and the water conductivity is significantly changed due to the effect of mining-induced pressure. By combining these structures, various geological hierarchical structures encountered during coal mining can be simulated.

[0057] Further, the control mechanism is mainly used to control the experimental main body mechanism 3. Through the controller, the movement of the coal seam simulation unit 310 is controlled by the coal seam control assembly 201 to simulate coal mining. The water circulation control assembly 202 is used to control the water circulation unit 4 to simulate the water situation in the geological structure. Other structures can also be adjusted or controlled, etc. There are many ways for the control mechanism to control the experimental main body mechanism 3, such as: the coal seam simulation unit 310 is a multi-layer stacked structure, and during the experiment, a layer of coal seam is extracted to simulate coal mining; or the coal seam simulation unit 310 is an integral destructible structure, which can be destroyed into fine particles, and during the experiment, the fine particles of the destroyed coal seam are extracted to simulate coal mining, etc.

[0058] In a specific application scenario, the support box 1 can be 1680mm*800mm (length* width), and the platform on the support box 1 for carrying the simulation box 300 can have a size of 1700mm*570mm (length* width). The entire simulation device can have a height of 1500mm. Then, in order to make the entire device more stable, the foot of the support box 1 can be a height-adjustable support structure, so that the simulation box 300 is finally located at a horizontal position or at an angle desired by the operator through height adjustment of the multiple feet.

[0059] As a preferred scheme of the present embodiment, the coal seam simulation unit 310 in the present embodiment includes a driving wheel 3101, a driven wheel 3102 installed side by side in the failure zone cavity 309, and a chain belt 3103 for simulating a coal seam connected between the driving wheel 3101 and the driven wheel 3102. The driving wheel shaft of the driving wheel 3101 and the driven wheel shaft of the driven wheel 3102 both penetrate the front and rear side walls of the failure zone cavity 309, and the upper surface of the chain belt 3103 protrudes from the top of the failure zone cavity 309.

[0060] The rear side wall of the simulation box 300 is provided with a horizontal support plate 311, and the coal seam control assembly 201 includes a speed reducer 2011 arranged on the horizontal support plate 311 and a first liquid level sensor 2012 arranged at the bottom of the failure zone cavity 309. The input end of the speed reducer 2011 is connected with a motor 2013, and the output end of the speed reducer 2011 is connected with the driving wheel 3101 through the driving wheel shaft penetrating the rear side wall of the simulation box 300.

[0061] The first liquid level sensor 2012 and the motor 2013 are respectively connected with a controller.

[0062] In the present embodiment, the coal seam control assembly 201 transmits power to the coal seam simulation unit 310. When the first liquid level sensor 2012 senses the water level, the controller sends a command to the coal seam control assembly 201 to drive the driving wheel 3101 and the driven wheel 3102 to jointly drive the chain belt 3103 for simulating the coal seam to move back and forth or in one direction along the horizontal direction. Through the movement of the simulated coal seam, the environment in the failure zone cavity 309 is further driven to move or act, simulating the movement or activity of the real failure zone, and improving the accuracy of the simulation experiment results. The driving wheel shaft of the driving wheel 3101 and the driven wheel shaft of the driven wheel 3102 are arranged at the positions where the wall of the failure zone cavity 309 is contacted, and the output end of the speed reducer 2011 is arranged at the position where the rear side wall of the simulation box 300 is contacted, and a sealing ring is arranged at each position to avoid affecting the accuracy of the experimental results.

[0063] As a preferred scheme of the embodiment, the water circulation unit 4 in the embodiment comprises a water tank 400 arranged in the support box 1, the water tank 400 is connected in communication with the water-bearing layer chamber 304 through a water supply pipe 401 to supply water to the simulation box 300, the top of the first collapse column cavity 307 is connected with the water tank 400 through a backwater pipe 402, and the liquid overflowing from the first collapse column cavity 307 flows back to the water tank 400 through the backwater pipe 402; the water tank 400 is further provided with a first water valve 403, and water is obtained from an external water system through the first water valve 403.

[0064] The water circulation control assembly 202 comprises a water pump 2021 and a second liquid level sensor 2022, the water pump 2021 is arranged in the water tank 400 and connected with one end of the water supply pipe 401, the water pump 2021 is connected with a controller, the controller controls the water pump 2021 to supply water in the water tank 400 to the simulation box 300 through the water supply pipe 401, and after the test is completed, the water in the simulation box 300 is pumped back to the water tank 400 through the water supply pipe 401; the second liquid level sensor 2022 is arranged on the lower surface of the first partition plate 302 and connected with the controller, the second liquid level sensor 2022 sends a signal to the controller after sensing the water level, so that the controller makes a subsequent decision, and the automation of water circulation can be achieved.

[0065] As a preferred scheme of the embodiment, the water supply pipe 401 in the embodiment is provided with a second water valve 404, the second water valve 404 is connected with the controller, and the second water valve 404 can control the suspension of water supply of the water supply pipe 401.

[0066] As a preferred scheme of the embodiment, the damage zone cavity 309 in the embodiment is in the shape of a bucket and the bottom is arc-shaped, because when the coal mine is actually mined, the geological structure close to the coal seam is more likely to be damaged, and the upper part of the collapse column with soft geology is more likely to be damaged to a greater extent, so that an arc-shaped damage zone is easily formed in the sandstone layer chamber 306, and the damage zone cavity 309 in the embodiment is arc-shaped, wherein the bottom of the arc-shaped damage zone cavity 309 is the deepest part of the arc-shaped bottom, and the arc-shaped bottom of the damage zone cavity 309 is also provided with a plurality of through holes.

[0067] As a preferred scheme of the embodiment, the diameter of the through holes on the first partition plate 302 and the second partition plate 303 in the embodiment is 3 mm, and the porosity of the first partition plate and the second partition plate is 60%, which can simulate the state of underground water passing through each stratum when water inrush occurs, and improve the accuracy of the results of the simulation experiment.

[0068] As a preferred scheme of the embodiment, the part of the first collapse column cavity 307 in the water-bearing layer chamber 304 is in a reverse funnel shape, the included angle between the inclined side wall of the first collapse column cavity 307 and the central axis of the first collapse column cavity 307 is 60°-75°, further more, the shape of the natural collapse column is simulated more truly, the side wall of the reverse funnel part of the first collapse column cavity 307 is in a mesh shape, the mesh part can be made of stainless steel, so that the liquid in the water-bearing layer chamber 304 can enter the first collapse column cavity 307, and the water level in the water-bearing layer chamber 304 and the first collapse column cavity 307 is consistent.

[0069] The bottom of the second collapse column cavity 308 is connected with the inclined side wall of the first collapse column cavity 307 through the connecting cavity 312, the included angle between the upper wall of the connecting cavity 312 and the central axis of the second collapse column cavity 308 is 50°-60°, in order to simulate the real geological environment, the first collapse column cavity 307 and the second collapse column cavity 308 can be connected in the water-bearing layer chamber 304, so that the same material is filled and the connected state is formed, and the specific geological situation is simulated truly, when the water inrush disaster is simulated, the water flow or seepage can spread along the two collapse columns smoothly.

[0070] As a preferred scheme of the embodiment, the outer surface of the chain belt 3103 is distributed with a plurality of irregular protrusions, the dynamic state between the coal seam surface and the damage zone in the mining process can be simulated more truly, the material of the protrusions can be selected from silica gel, rubber and the like, the selection of the above materials can ensure the normal operation of the chain belt 3103 and generate force on the medium in the damage zone cavity 309.

[0071] As a preferred scheme of the embodiment, the control panel 5 is arranged on the support box 1, the control panel 5 is connected with the controller, is used for displaying the experimental data and the working state of the control mechanism, and makes the observation of the operator more intuitive, the control panel 5 can be a touch screen or only a display screen, when the control panel 5 is a touch screen, part or all of the control buttons, switches and the like can be displayed through the control panel 5, so that the operator can control more conveniently, and the corresponding experimental data can be viewed at the same time, so that the corresponding adjustment can be made in time.

[0072] Based on the same concept, the application further provides a karst collapse column water inrush disaster simulation method applied to the karst collapse column water inrush disaster simulation device, as shown in Figure 4 The method specifically includes the following steps:

[0073] Step 1010: filling medium, filling the corresponding medium in the aquifer chamber 304, the aquifuge chamber 305, the sandstone layer chamber 306, the first collapse column cavity 307, the second collapse column cavity 308 and the damage zone cavity 309;

[0074] Step 1020: pre-water filling, starting the control mechanism, opening the water circulation control assembly 202 to fill water in the simulation box 300 through the controller, when the second liquid level sensor 2022 senses the water level, closing the water circulation control assembly 202 to stop the simulation box 300 from being filled with water;

[0075] Step 1030: opening the simulation experiment, starting the control mechanism again, continuously filling water in the simulation box 300, when the first liquid level sensor 2012 senses the water level, moving the coal seam simulation unit 310 through the coal seam control assembly 201;

[0076] Step 1040: real-time recording, continuously filling water in the experimental main body mechanism 3, recording the water spraying conditions of the first collapse column cavity 307, the second collapse column cavity 308 and the damage zone cavity 309;

[0077] Step 1050: device drainage, draining the water in the experimental main body mechanism 3 back to the water tank 400 through the water circulation control assembly 202.

[0078] The method of the above embodiment is applied to the coal karst collapse column water inrush disaster simulation device in the corresponding embodiment of the above embodiment, and the specific content of each step included in the above embodiment has been described and the corresponding beneficial effects have been described in the above embodiment, so the above embodiment will not be described here.

[0079] In specific embodiments, during the simulation experiment by the karst collapse column water inrush disaster simulation device, first, fill the media corresponding to the real scene in the aquifer chamber 304, the aquifuge chamber 305, the sandstone layer chamber 306, the first collapse column cavity 307, the second collapse column cavity 308 and the damage zone cavity 309, the second step is to pre-water in the simulation box 300, start the control mechanism through the button or simulation button on the control panel 5, the controller in which opens the water pump 2021 and the second water valve 404, the water in the water tank 400 enters the aquifer chamber 304 through the water supply pipe 401, further, because of the existence of the first collapse column cavity 307 and the connecting cavity 312, the water in the aquifer chamber 304 synchronously enters the first collapse column cavity 307 and the second collapse column cavity 308, the water level in the first collapse column cavity 307 and the second collapse column cavity 308 is flat with the water level in the aquifer chamber 304, when the water level rises to the second liquid level sensor 2022, the second liquid level sensor 2022 senses the water level, then the second water valve 404 is closed, the simulation box 300 is further pre-watered, the purpose of the position of the second liquid level sensor 2022 is to simulate the expression of the underground aquifer as a straight full of water state, the third step is to start the simulation experiment, open the second water valve 404 through the controller, the water pump 2021 further continuously water in the simulation box 300, the water in the aquifer chamber 304 enters the aquifuge chamber 305 through the through hole on the first partition plate 302, at the same time, the water level in the first collapse column cavity 307 and the second collapse column cavity 308 also continuously rises, but because of the different filling media, the water level rises differently, when the water level in the aquifuge chamber 305 breaks through the second partition plate 303 and enters the sandstone layer chamber 306 through the through hole on the second partition plate 303, the water level in the second collapse column cavity 308 rises to the arc-shaped bottom of the damage zone cavity 309, when the water level in the second collapse column cavity 308 contacts the first liquid level sensor 2012, the controller controls the coal seam control assembly 201 to start operation, the motor 2013 transmits power to the driving wheel shaft through the output end of the speed reducer 2011, under the driving of the driving wheel shaft, the driving wheel 3101 drives the driven wheel 3012 to move synchronously, and further drives the chain belt 3103 used for simulating the coal seam to start horizontal reciprocating motion or one-way motion on the medium surface in the damage zone chamber 308, simulating the coal mining process.With the simulation of coal seam mining, the water level in the first collapse column cavity 307, the second collapse column cavity 308 and the sandstone layer cavity continues to rise, at this time, the sandstone layer cavity starts to break through, the water level in the first collapse column cavity 307 rises above the top level of the simulation box 300, the first collapse column cavity 307 realizes water spray simulation, the water in the first collapse column cavity 307 flows back to the water tank 400 through the backflow pipe, at the same time, the second collapse column cavity 308 automatically provides water for the destruction zone cavity 309, simulates the situation that the hidden collapse column sprays a large amount of water into the destruction zone, and in the whole process, the corresponding data can be recorded in real time, when the experiment is completed, the water in the whole simulation box 300 is discharged back to the water tank 400 through the water supply pipe 401 by clicking the drainage button or the virtual drainage button on the control panel 5.

[0080] It should be noted that the method of the embodiments of the present application can be executed by a single device, such as a computer or a server. The method of the embodiments of the present application can also be applied to a distributed scenario, and completed by multiple devices cooperating with each other. In this distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiments of the present application, and the multiple devices can interact with each other to complete the method.

[0081] It should be noted that the above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be executed in a different order than described above and still achieve the desired result. In addition, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous.

[0082] Those of ordinary skill in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest that the scope of the present application (including the claims) is limited to these examples; under the teachings of the present application, the above examples or technical features in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the aspects of the embodiments of the present application as described above, which are not provided in detail.

[0083] Additionally, to simplify the description and discussion, and so as not to obscure the embodiments of the application being presented, the well-known functions or constructions of integrated circuit (IC) chips and other components can or can not be shown in the figures and will be omitted as not to unnecessarily obscure the embodiments of the application being presented. Moreover, the devices can be shown in block diagram form in order to avoid obscuring the embodiments of the application, and this also acknowledges the fact that the details in regard to the implementation of the block diagram devices are highly dependent on the platform within which the embodiments of the application are to be implemented (i.e., these details should be well within the purview of one of ordinary skill in the art). Where specific details are set forth in order to describe an illustrative embodiment of the application, it will be apparent to one of ordinary skill in the art that the embodiments of the application can be practiced without, or with variation of, these specific details. Thus, the description is to be considered as illustrative only and not restrictive in nature.

[0084] While the application has been described in connection with specific embodiments thereof, it will be understood that many modifications, substitutions and changes will be apparent to those of ordinary skill in the art once they have the benefit of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0085] It is intended that the embodiments of the application encompass all such substitutions, modifications and variations as fall within the scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the application should be included in the scope of protection of the application.

Claims

1. A karst collapse column water inrush disaster simulation device, characterized in that, Including support box (1) and control mechanism, support box (1) top is provided with experimental main body mechanism (3), support box (1) is provided with water circulation unit (4) in; The experimental main body mechanism (3) includes the open top simulation box (300), the front side box wall of simulation box (300) is provided with observation window (301), and the inside of simulation box (300) is provided with first baffle (302) and second baffle (303) from bottom to top, a plurality of through holes are formed in first baffle (302) and second baffle (303); The space between first baffle (302) and box bottom is water-bearing layer chamber (304), the space between first baffle (302) and second baffle (303) is water-resisting layer chamber (305), and the space between second baffle (303) and box top is sandstone layer chamber (306); The simulation box (300) is also provided with first subsided column cavity (307) and second subsided column cavity (308) in parallel, the bottom end of first subsided column cavity (307) is arranged on the box bottom of simulation box (300), and the top end of first subsided column cavity (307) penetrates first baffle (302) and second baffle (303) in sequence and extends to the outside of the box top of simulation box (300);The bottom end of second subsided column cavity (308) is communicated with first subsided column cavity (307), and the top end of second subsided column cavity (308) penetrates first baffle (302) and second baffle (303) in sequence and is communicated with the bottom of damage zone cavity (309) arranged in sandstone layer chamber (306), and the top of damage zone cavity (309) is provided with coal seam simulation unit (310); The control mechanism includes a controller, a coal seam control assembly (201) and a water circulation control assembly (202) connected to the controller;The coal seam control assembly (201) is used for controlling coal seam simulation unit (310);The water circulation control assembly (202) is used for controlling water circulation unit (4); The part of first subsided column cavity (307) in water-bearing layer chamber (304) is inverted funnel-shaped, the included angle between the inclined side wall of first subsided column cavity (307) and the central axis of first subsided column cavity (307) is 60°-75°, and the side wall of the inverted funnel-shaped part of first subsided column cavity (307) is net-shaped; The bottom of second subsided column cavity (308) is connected with the inclined side wall of first subsided column cavity (307) through connecting cavity (312), and the included angle between the upper wall of connecting cavity (312) and the central axis of second subsided column cavity (308) is 50°-60°.

2. The karst collapse column water inrush disaster simulation device of claim 1, wherein, The coal seam simulation unit (310) comprises a driving wheel (3101), a driven wheel (3102) and a chain belt (3103) for simulating the coal seam, which are arranged side by side in the failure zone cavity (309), the driving wheel shaft of the driving wheel (3101) and the driven wheel shaft of the driven wheel (3102) penetrate through the front and rear sidewalls of the failure zone cavity (309), and the upper surface of the chain belt (3103) protrudes from the top of the failure zone cavity (309); The rear sidewall of the simulation box (300) is externally provided with a horizontal support plate (311), the coal seam control assembly (201) comprises a speed reducer (2011) arranged on the horizontal support plate (311) and a first liquid level sensor (2012) arranged at the bottom of the failure zone cavity (309), the input end of the speed reducer (2011) is connected with a motor (2013), and the output end of the speed reducer (2011) is connected with the driving wheel (3101) through the driving wheel shaft and the rear sidewall of the simulation box (300); The first liquid level sensor (2012) and the motor (2013) are connected with the controller respectively.

3. The karst collapse column water inrush disaster simulation device of claim 2, wherein, The water circulation unit (4) comprises a water tank (400) arranged in the support box body (1), the water tank (400) is connected with the aquifer chamber (304) through a water supply pipe (401), the top of the first collapse column cavity (307) is connected with the water tank (400) through a backwater pipe (402), and the water tank (400) is provided with a first water valve (403); The water circulation control assembly (202) comprises a water pump (2021) and a second liquid level sensor (2022), the water pump (2021) is arranged in the water tank (400) and connected with one end of the water supply pipe (401), and the second liquid level sensor (2022) is arranged on the lower surface of the first partition plate (302); The water pump (2021) and the second liquid level sensor (2022) are connected with the controller respectively.

4. The karst collapse column water inrush disaster simulation device of claim 3, wherein, The water supply pipe (401) is provided with a second water valve (404), and the second water valve (404) is connected with the controller.

5. The karst collapse column water inrush disaster simulation device of claim 1, wherein, The failure zone cavity (309) is in the shape of a bucket and has an arc-shaped bottom.

6. The karst collapse column water inrush disaster simulation device of claim 1, wherein, The diameter of the through hole is 3-5 mm, and the porosity of the first partition plate and the second partition plate is 60-70%.

7. The karst collapse column water inrush disaster simulation device of claim 2, wherein, Irregular protrusions are distributed on the outer surface of the chain belt (3103).

8. The karst collapse column water inrush disaster simulation device of claim 1, wherein, A control panel (5) is arranged on the support box body (1) and connected with the controller.

9. A karst collapse column water inrush disaster simulation method, characterized in that, The simulation method is realized by using the karst collapse column water inrush disaster simulation device of claim 3. Specifically, the method comprises the following steps: Step one: filling medium, filling corresponding medium in the aquifer chamber (304), the aquifuge chamber (305), the sandstone layer chamber (306), the first collapse column cavity (307), the second collapse column cavity (308) and the failure zone cavity (309); Step two: pre-water, start the control mechanism, open the water circulation control assembly (202) through the controller to give the simulation box (300) water, when the second liquid level sensor (2022) senses the water level, the water circulation control assembly (202) is closed, and the simulation box (300) continues to be watered; Step three: open the simulation experiment, start the control mechanism again, and continue to water the simulation box (300); when the first liquid level sensor (2012) senses the water level, the coal seam control assembly (201) controls the coal seam simulation unit (310) to move; Step four: real-time recording, continuously watering the experimental main body mechanism (3), and recording the water spraying conditions of the first collapse column cavity (307), the second collapse column cavity (308) and the damage zone cavity (309); Step five: device drainage, the water in the experimental main body mechanism (3) is drained back to the water tank (400) through the water circulation control assembly (202).

Images