A simulation device and method for purifying mine water by underground reservoir rock mass

Abstract

The present invention provides a simulation device and method for purifying mine water by underground reservoir rock mass, the simulation device comprising: a purification module group, which comprises a plurality of purification units connected in series and parallel to each other, the purification unit comprising a plurality of purification modules assembled and connected in a modular manner, each purification module being filled with underground reservoir rock mass having a preset particle size distribution; a water storage assembly, which is connected to the inlet of the purification module group to supply the mine water to be purified; and at least one flexible connector, which is arranged between adjacent purification units so that adjacent purification units can rotate relative to each other. By using the simulation device of the present invention, it is possible to effectively increase the test purification path and shorten the test cycle, and it adopts modular assembly, is easy to install, easy to operate, effectively saves installation time, and can realize angle adjustment for a certain purification unit to simulate the purification effect of the inclined coal seam underground reservoir rock mass on mine water.

Description

Technical Field

[0001] The invention relates to the technical field of mining engineering test research, and more specifically, to a simulation device and method for purifying mine water by underground reservoir rock mass. Background Art

[0002] Large-scale coal mining destroys underground aquifers, resulting in a huge waste of water resources. Therefore, reasonable coal mining water resource protection technology should be selected to maximize water resource protection while achieving coordination between coal development and water resource protection. In response to the problem of coordinated mining of coal and water resources, experts have proposed the concept of underground coal mine reservoirs, that is, using the interstitial storage holes in the rock mass of the goaf formed by coal mining, connecting the safety coal pillars with artificial dams to form a reservoir dam, and building mine water storage facilities and water intake facilities at the same time, making full use of the natural purification effect of the rock mass of the goaf on mine water, and building coal mine underground reservoir projects.

[0003] Coal mine underground reservoirs have opened up a new technical approach for the coordinated exploitation of coal and water resources. At the same time, during the flow of mine water in the reservoir, water-rock coupling occurs with the rock mass in the goaf, and water quality is purified during the flow. However, the purification effect of underground reservoir rock mass on mine water is still relatively vague, and its purification mechanism has not yet been mastered, let alone its purification law. In order to achieve coordinated coal-water exploitation, it is necessary to conduct a systematic and in-depth study on the purification mechanism of underground reservoir rock mass on mine water, reveal its purification law, and propose technical methods to enhance the purification effect. The main device for conventional water purification test to study water quality changes can only adjust the inclination angle as a whole due to its integral structure, and cannot achieve angle control of a certain section of the path, so it cannot accurately simulate the purification effect of the inclined coal seam underground reservoir rock mass on mine water. Summary of the invention

[0004] In response to the above-mentioned problems in the prior art, the present application proposes a simulation device and method for purifying mine water by underground reservoir rock mass, which simulates the actual situation of the underground reservoir to the greatest extent, has a long effective purification path, a short test cycle, modular assembly, and can adjust the angle of a certain section to simulate an inclined coal seam, and is easy to operate.

[0005] In the first aspect, the present invention provides a simulation device for purifying mine water by underground reservoir rock mass, the simulation device comprising: a purification module group, which comprises a plurality of purification units connected in series and parallel to each other, the purification unit comprises a plurality of purification modules assembled and connected in a modular manner, each of the purification modules is filled with underground reservoir rock mass with a preset particle size distribution; a water storage assembly, which is connected to the inlet of the purification module group to supply the mine water to be purified; and at least one flexible connector, which is arranged between adjacent purification units so that the adjacent purification units can rotate relative to each other; on each purification unit of the adjacent purification units, a square grate is fixedly arranged at the flexible connector of the purification module. By using the simulation device of this aspect, the test purification path can be effectively increased, the test cycle can be shortened, and the modular assembly is adopted, which is easy to install and easy to operate, effectively saving installation time, and the angle adjustment can be realized for a certain purification unit to simulate the purification effect of the underground reservoir rock mass of the inclined coal seam on the mine water.

[0006] In one embodiment of the first aspect, the purification units interconnected by the flexible connector further include hydraulic equipment to adjust the inclination angle of the purification unit. This embodiment can provide power for adjusting the angle of the purification unit, so that the inclination angle can be adjusted more efficiently.

[0007] In one embodiment of the first aspect, the purification module includes a stainless steel side plate, a stainless steel bottom plate, a sampling tube disposed on the side plate, and a connecting flange disposed at one or both ends thereof; inside the purification unit, adjacent purification modules are sealedly connected via the connecting flange. Through this embodiment, the structure of the purification module is defined, so that adjacent purification modules are tightly connected, and it is convenient for test personnel to take samples through the sampling tube and analyze and test water quality indicators.

[0008] In one embodiment of the first aspect, the purification unit includes multiple of the following purification modules: a first purification module, one end of which is fixedly provided with a connecting flange, the other end of which is provided with an opening to serve as a water inlet or a water outlet, and two sampling tubes are provided on its side panel; a second purification module, both ends of which are fixedly provided with connecting flanges, and four sampling tubes are provided on its side panel; a third purification module, one end of which is fixedly provided with a connecting flange, the other end of the side panel is fixedly welded with a square grate, and two sampling tubes are provided on the side panel; a fourth purification module, which is L-shaped, both ends of which are fixedly provided with connecting flanges, and four sampling tubes are provided on its side panel; and a fifth purification module, which is L-shaped, both ends of which are fixedly provided with connecting flanges, and four sampling tubes are provided on its side panel.

[0009] In an embodiment of the first aspect, the purification module group includes 4 purification units, and each purification unit includes 3 purification modules. Through this embodiment, the purification effect of the rock mass of the goaf (purification unit) of multiple underground reservoirs on mine water can be simulated.

[0010] In one embodiment of the first aspect, a gate valve is provided between the connecting flanges of adjacent purification modules. According to this embodiment, the purification modules are separated by the gate valve, and a part of the simulation device can be used as an effective test area to adjust the purification path according to the purification path required by the test.

[0011] In one embodiment of the first aspect, the purification unit further includes an online monitoring module, which is disposed on the top of the purification unit to monitor and analyze the mine water flowing through the purification unit.

[0012] In an embodiment of the first aspect, the size of the purification unit is 15m×1m×1m. Through this embodiment, the actual situation on site can be simulated to the greatest extent, thereby improving the reliability of the test.

[0013] In one embodiment of the first aspect, the simulation device further comprises: a circulation component, which is connected to both the inlet and the outlet of the purification module group, so that the purified mine water circulates through the outlet, the circulation component and the inlet. Through this embodiment, the mine water can be circulated into the simulation device for purification during the test.

[0014] In the second aspect, a method for purifying mine water by simulating underground reservoir rock mass using the simulation device of the first aspect and any embodiment thereof is provided, the method comprising the following steps: assembling the plurality of purification modules into a purification module group, connecting the purification module group with the water storage component; in two adjacent purification units connected with the flexible connector, pivoting one of the purification units relative to the other purification unit around the axis of the flexible connector at a target angle; and passing the mine water to be purified into the purification module group through the water storage component.

[0015] Compared with the prior art, the simulation device and method for purifying mine water by underground reservoir rock mass provided by the present invention have the following beneficial effects:

[0016] (1) The simulation test device can more realistically reflect the actual situation of the underground reservoir site, and the test data is more reliable;

[0017] (2) The device is specially designed to study the purification effect of underground reservoir rock mass on water quality. The test purification path is longer, which can effectively shorten the test cycle;

[0018] (3) The device is composed of purification module components, which can be assembled in a modular manner, is easy to install and operate, and can effectively save installation time;

[0019] (4) The device can adjust the angle of a purification unit to simulate the purification effect of the rock mass of the inclined coal seam underground reservoir on mine water;

[0020] (5) The device uses a gate valve to separate the module components, which can adjust the purification path during the test, making the test more flexible;

[0021] (6) The plug valve can be used to make the module components independent. Each module component can be used for testing, and multiple groups of tests can be performed simultaneously according to needs.

[0022] Therefore, the present invention can better complete the simulation test of underground reservoir rock mass purifying mine water, the test data is more realistic, and technical support is provided for the protection and utilization of water resources in the process of coal seam mining.

[0023] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the present invention can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0025] Figure 1 shows a top view of a simulation device according to an embodiment of the present invention;

[0026] Figure 2 shows a top view of a purification module group according to an embodiment of the present invention;

[0027] Figure 3 shows a side view of a simulation device according to an embodiment of the present invention;

[0028] Figures 4 to 8 The structural schematic diagrams of the first purification module to the fifth purification module according to the embodiments of the present invention are respectively shown;

[0029] Fig. 9 A schematic structural diagram of a flexible connector according to an embodiment of the present invention is shown;

[0030] Fig.10 A schematic flow chart of a simulation method according to an embodiment of the present invention is shown.

[0031] List of reference numerals:

[0032] 100-simulation device; 110-water storage assembly; 111-water storage tank; 112-water inlet hose; 113-water inlet pump; 114-manual ball valve; 120-purification module group; 121-purification unit; 121A-first purification unit; 121B-second purification unit; 121C-third purification unit; 121D-fourth purification unit; 122-purification module; 122A-first purification module; 122B-second purification module; 122C-third purification module; 12 2D-the fourth purification module; 122E-the fifth purification module; 130-circulation assembly; 131-circulating water pool; 132-circulating water hose; 133-circulating water pipe; 134-circulating water pump; 140-sampling tube; 150-connecting flange; 160-square grate; 170-flexible connector; 171-frame; 172-flexible material; 180-gate valve; 190-hydraulic equipment; 200-support ribs; 210-online monitoring module; 300-cement table.

[0033] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 The top view of the simulation device 100 provided by the present invention for simulating groundwater and rock mass to purify mine water. Figure 1 and Figure 2 As shown, the simulation device 100 includes: a water storage component 110 and a purification module group 120, wherein the purification module group 120 is formed by at least one purification unit 121 connected in series, each purification unit 121 includes a plurality of purification modules 122 that are modularly assembled and connected, and each purification module 122 is filled with underground reservoir rock materials with a preset particle size distribution. In this way, the simulation device can be constructed in the form of multiple split units, and the length of the effective purification path of the mine water can be controlled, and the modular assembly can simplify the installation operation and save installation time.

[0036] Specifically, the water storage assembly 110 includes a water tank 111, a water inlet hose 112, a water inlet pump 113, and a manual ball valve 114 disposed on the water inlet hose 112. The water tank 111 stores the mine water to be purified, and is connected to the inlet of one of the purification units 121 of the purification device group 120 via the water inlet hose 112 to supply the mine water to the purification module group 120 via the water inlet pump 113, and the supply is controlled by the manual ball valve 114. The multiple purification units 121 are connected in series and communicated, and the supply water from the water tank 111 enters the purification module group 120 via the water inlet disposed on the purification unit connected thereto, and after circulating inside, it is discharged from the purification module group 120 via the water outlet (preferably circular) disposed at the end of the last purification unit, so as to complete the purification of the mine water.

[0037] Optionally, the simulation device 100 may also include a circulation component 130 so that the mine water discharged from the water outlet can be circulated again into the purification module group 120. The circulation component 130 includes a circulating water pool 131, a circulating water hose 132, a circulating water pipe 133, a circulating water pump 134, and a manual ball valve 114 arranged on the circulating water hose 132 and / or the circulating water pipe 133, wherein the circulating water pipe 133 is used to connect the module group water outlet and the circulating water pool 131, and the circulating water hose 132 is used to connect the circulating water pool 131 and the module group water inlet. The mine water discharged from the water outlet can enter the purification module group 120 again through the module group water inlet via the circulating water pipe 133, the circulating water pool 131 and the circulating water hose 132 in sequence, so that the mine water will circulate into the simulation device 100 for purification during the test. When the amount of mine water in the purification module group 120 reaches the test requirement, the manual ball valve 114 is rotated to stop the mine water in the water storage tank 111 from continuing to be injected into the purification module group 120, so that the amount of mine water inside the purification module group 120 reaches a dynamic equilibrium state.

[0038] In one embodiment, the water storage tank 111 is arranged above the ground to store mine water for testing; the circulating water tank 131 is arranged below the ground to collect circulating mine water during the test and circulate it for the test.

[0039] Preferably, both the water inlet pump 113 and the circulating water pump 134 are screw pumps, which facilitates flow control and avoids causing major disturbances to the water body and affecting water quality indicators.

[0040] In the simulation device 100 provided in the present application, the purification simulation of mine water is based on the purification unit. In other words, the structure of the purification unit simulates the underground reservoir void area, and the rock mass filled inside it should be selected from the reservoir rock mass on site, that is, the preset particle size distribution of the rock mass should be consistent with the particle size distribution of the rock mass on site, so as to restore the geological conditions on site to the greatest extent. It should be understood that the filling rate of the rock mass should be based on meeting the test requirements, that is, within the range of 50% to 80%. The purification module group 120 of the simulation device 100 is as follows: Figure 1 and Figure 2 As shown, the purification module group 120 includes a plurality of purification units 121, which are connected in series and can be connected in an on-off manner (through a gate valve as described in detail later) to form a continuous purification path, and each purification unit 121 can include a plurality of purification modules 122 connected in series and modularly assembled.

[0041] It should be understood that the simulation device 100 provided by the present invention may include one purification unit or multiple purification units. Figures 1 to 3 In the preferred embodiment shown, in order to simulate the purification effect of more underground reservoir goaf rock mass on mine water, the simulation device 100 is sequentially provided with four purification units 121A, 121B, 121C and 121D to simulate the purification test of mine water by the underground reservoir composed of four goafs. In order to simulate the actual situation on site to a greater extent and improve the reliability of the test, according to the parameters such as the length of the typical mine working face, the advancement distance, the height of the caving zone, etc., the size of the purification unit 121 of the test device simulating the underground reservoir is designed to be 15m×1m×1m.

[0042] Specifically, each purification unit 121 can be obtained by modularly combining multiple of the first purification module 122A, the second purification module 122B, the third purification module 122C, the fourth purification module 122D and the fifth purification module 122E. Figure 1 and Figure 2The composition of the first purification unit 121A, the second purification unit 121B, the third purification unit 121C and the fourth purification unit 121D is shown in FIG. The first purification unit 121A is connected to the water storage tank 111 and the circulating water tank 131, and includes the first purification module 122A, the second purification module 122B and the third purification module 122C in sequence; the second purification unit 121B includes the third purification module 122C, the second purification module 122B and the fourth purification module 122D in sequence; the third purification unit 121C includes the fourth purification module 122D, the second purification module 122B and the fifth purification module 122E in sequence; the fourth purification unit 121D includes the fifth purification module 122E, the second purification module 122B and the first purification module 122A in sequence; all the above purification modules 122 are connected end to end to form the structure of the simulation device 100 in which four purification units 121 are connected end to end.

[0043] Figure 4-Figure 8 As shown in the figure, each purification module includes a stainless steel side plate, a stainless steel bottom plate, a sampling tube 140 disposed on the side plate, and a connecting flange 150 fixedly disposed at one or both ends thereof.

[0044] like Figure 4 As shown, the outline of the first purification module 122A is formed by a stainless steel side panel and a stainless steel floor through a fixed connection method such as welding, and the cross-section is square. A connecting flange 150 made of angle steel is fixedly welded at one end, and a plurality of openings are provided at the other end. The plurality of openings may include a water inlet connected to the water storage tank 111 and the circulating water tank 131 and a water outlet connected to the circulating water tank 131. Two sampling tubes 140 are provided on one of the side panels on the long side, wherein one sampling tube 140 is located at the bottom of the side panel, and the other sampling tube 140 is located in the middle of the side panel.

[0045] like Figure 5 As shown, the outline of the second purification module 122B is formed by stainless steel side panels and stainless steel floors through fixed connection methods such as welding. The cross-section is square, and connecting flanges 150 are welded at both ends. Four sampling tubes 140 are arranged on one of the side panels on the long sides, of which two sampling tubes 140 are located at the bottom of the side panel, and the other two sampling tubes 140 are located in the middle of the side panel.

[0046] like Figure 6 As shown, the outline of the third purification module 122C is formed by a stainless steel side plate and a stainless steel floor through a fixed connection method such as welding, and the cross section is square, one end of which is fixedly welded with a connecting flange 150, and the other end is fixedly welded with a square grate 160 ( Figure 3The invention relates to a purification module 122 having a plurality of side panels, wherein the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122A and the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122B. The purification module 122 has a plurality of side panels, wherein the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122C and the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122B. The purification module 122 has a plurality of side panels, wherein the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122C and the plurality of sampling tubes 140 are arranged on the side panels of the plurality of purification modules 122C ...

[0047] like Figure 7 As shown, the outline of the fourth purification module 122D is formed by a stainless steel side panel and a stainless steel bottom panel through a fixed connection method such as welding. The outline is L-shaped, and connecting flanges 150 are welded at both ends. Two sampling tubes 140 are arranged on the long side panel and the short side panel, of which one sampling tube 140 is located at the bottom of the side panel, and the other sampling tube 140 is located in the middle of the side panel.

[0048] like Figure 8 As shown, the outline of the fifth purification module 122E is formed by a stainless steel side panel and a stainless steel bottom panel through a fixed connection method such as welding. The outline is L-shaped, and connecting flanges 150 are welded at both ends. Two sampling tubes 140 are arranged on the long side panel and the short side panel, two of which are located at the bottom of the side panel, and the other two sampling tubes 140 are located in the middle of the side panel.

[0049] When assembling each purification unit, the connection flanges 150 of two adjacent purification modules 122 are connected by high-strength bolts. Preferably, a gate valve 180 ( Figures 1 to 3 As shown in FIG. 1 , the gate valve 180 can open or close the fluid communication between adjacent purification modules according to the test requirements, thereby controlling the purification path of the purification unit 121 or the purification module group 120 to extend or shorten it. It should be understood that a thickened rubber sealing gasket can also be provided in the middle to prevent water leakage during the test.

[0050] Through the structure of multiple purification modules provided in the present application, the first purification unit 121A to the fourth purification unit 121D can form the purification module group 120 in two S-shaped structures, which can effectively reduce the floor space of the simulation device 100.

[0051] At the same time, Figures 1 to 3In the embodiment described, the simulation device 100 includes a total of 46 sampling tubes 140, of which 23 sampling tubes 140 are located at the bottom of the side plate of the simulation device, and the other 23 sampling tubes 140 are located in the middle of the side plate.

[0052] In combination with the preferred embodiment of the above-mentioned purification unit, in this preferred embodiment, the size of the first purification module 122A is 3m×1m (length×width); the size of the second purification module 122B is 6m×1m (length×width); the size of the third purification module 122C is 6m×1m (length×width); the size of the fourth purification module 122D is 3m×1m (length×width), and the width of the short side panel is 1.5m; the size of the fifth purification module 122E is 6m×1m (length×width), and the width of the short side panel is 1.25m; in this way, the size of each purification unit 121 can be 15m×1m×1m.

[0053] like Figure 1 and Figure 2 As shown, in a preferred embodiment, in order to facilitate the adjustment of the angle of a purification unit 121, the purification unit can be connected to the adjacent purification unit through a flexible connector 170 instead of a connecting flange 150. Specifically, the flexible connector 170 is arranged at the end position of the purification module (the third purification module 122C in the above preferred embodiment) having a square grate 160, and is located between two square grates 160, so that a purification unit can rotate relative to its adjacent purification unit, that is, the purification unit as a whole pivots with one end of the flexible connector 170 as a fulcrum, so that the other end is raised at a certain angle relative to the ground, so as to achieve angle adjustment for the specified purification unit, simulating the purification effect of the rock mass of the inclined coal seam underground reservoir on mine water; wherein, the setting of the square grate 160 can prevent the large rock mass inside the purification module 122 from entering the flexible connector 180, while ensuring the reliability of the experiment, avoiding the wear and tear of the flexible connector 180.

[0054] like Fig. 9 The figure shows a schematic diagram of the structure of the flexible connector 170. The flexible connector 170 may include two frames 171 and a flexible material 172 fixedly disposed between the two frames 171, wherein the frames 171 and the flexible material 172 may be sealed and connected by a sealing means known to those skilled in the art (such as adhesive bonding), so that the mine water will not leak when flowing through it.

[0055] It should be understood that in the simulation device provided in the present application, a plurality of flexible connectors 170 may be included, that is, a flexible connector 170 is provided between at least one pair of adjacent purification units of the plurality of purification units 121. Optionally, if necessary, for each pair of purification units provided with a flexible connector 170, one of the purification units 121 may be pivoted relative to its adjacent purification unit around the flexible connector 170 at respective angles to simulate the purification effect of the inclined coal seam underground reservoir under the complex bottom layer on the mine water. Most preferably, a flexible connector 170 is provided between any adjacent purification units of the simulation device.

[0056] More preferably, the simulation device 100 may further include at least one hydraulic device 190, each hydraulic device corresponding to the purification unit 121 connected by the flexible connection member 180 (in Figure 2 In the illustrated embodiment, each purification module 122 of the first purification unit 121A is provided to provide power for adjusting the angle of the purification unit 121. When the angle of the purification unit needs to be adjusted, the support force of the at least one hydraulic device 190 is set so that each purification module 122 of the purification unit 121 is stably stressed.

[0057] For example, in Figure 2 In the preferred embodiment shown, the first purification module 122A, the second purification module 122B and the third purification module 122C of the first purification unit 121A are each provided with a hydraulic device 190, and the spacing is 4.5m. When the angle of the first purification unit 122A needs to be adjusted, the support force of the three groups of hydraulic devices 190 is set to make each module component evenly stressed.

[0058] However, it should be understood that when there are multiple purification units connected by flexible connectors 170 in the purification module group 120, at least one independent hydraulic device 190 should be set for each purification unit 121, so that different inclination angles can be set for multiple purification units at the same time to study the effects of different inclination angles on the purification effect.

[0059] In a preferred embodiment, when each purification unit 121 is tilted relative to the ground through the flexible connection member 170, the tilt angle (ie, the pivot angle) thereof is within the range of 0° to 16°.

[0060] Additionally, the simulation device 100 further includes at least one supporting rib 200 welded to a side plate of the purification module 122 , and each supporting rib 200 is provided corresponding to each purification module 122 provided with the hydraulic device to bear the supporting force.

[0061] The sampling tubes 140 disposed on the side panels of the purification module 122 as described above enable sampling to be performed through any sampling tube 140 during the test process to analyze and test water quality indicators.

[0062] Additionally or alternatively, such as Figure 2 and Figure 3 As shown, the simulation device 100 may also include an online monitoring module 210 to implement online monitoring of the mine water quality index, and may perform continuous monitoring for a certain period of time. Figure 1 and Figure 2 In the embodiment, the simulation device 100 is provided with a total of 5 groups of online monitoring modules 210, of which 4 groups are arranged in front of the gate valve 180 along the water flow direction, and 1 group is arranged at a position close to the water outlet of the simulation device 100.

[0063] Those skilled in the art should understand that in the present application, the gate valve 180 can be used to separate each purification module 122, and each purification module 122 can be used for testing, and multiple groups of tests can be performed simultaneously according to needs.

[0064] In addition, in actual application, the simulation device 100 can be installed on a cement platform 300, and the cement platform 300 is 100 mm above the ground.

[0065] like Fig. 9 As shown, the present application also provides a method 400 for purifying mine water by simulating underground reservoir rock mass using the simulation device 100. The method 400 includes the following steps:

[0066] S410, assembling the plurality of purification modules into the purification module group 120, and connecting the purification module group 120 with the water storage assembly 110;

[0067] S420 , of two adjacent purification units connected to the flexible connector 170 , one of the purification units is pivoted relative to the other purification unit around the axis of the flexible connector 170 by a target angle.

[0068] S430, the water storage assembly 110 passes the mine water to be purified into the purification module group 120.

[0069] Since the structure, principle and working process of the purification module group 120 have been described in detail above, they will not be repeated here.

[0070] The simulation device and method for purifying mine water by underground reservoir rock provided in the present application can more realistically reflect the actual situation on site of the underground reservoir, and the test data is more reliable; the device is specially designed for studying the purification effect of underground reservoir rock on water quality, and the test purification path is longer, which can effectively shorten the test period; the device is spliced ​​by purification module components, which can realize modular assembly, and is easy to install and easy to operate, which can effectively save installation time; the device can realize the angle adjustment of a certain purification unit to simulate the purification effect of inclined coal seam underground reservoir rock on mine water; the device uses a gate valve to separate the module components, and the purification path can be adjusted during the test, making the test more flexible; the gate valve can be used to make the module components independent, and each module component can be used for testing, and multiple groups of tests can be done simultaneously according to needs.

[0071] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0072] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A simulation device for purifying mine water by underground reservoir rock mass, characterized in that: The simulation device comprises: A purification module group, comprising a plurality of purification units connected in series and in parallel with each other, wherein the purification unit comprises a plurality of purification modules that are modularly assembled and connected, each of the purification modules is filled with underground reservoir rock mass having a preset particle size distribution, and a gate valve is provided between the connection flanges of adjacent purification modules; a water storage assembly, which is in communication with the inlet of the purification module group to supply the mine water to be purified; and at least one flexible connector, the flexible connector being disposed between adjacent purification units so that the adjacent purification units can pivot relative to each other about the flexible connector at respective angles; Wherein, on each of the adjacent purification units, a square grate is fixedly provided at the location of the purification module where the flexible connector is provided; The purification units interconnected by the flexible connectors further include hydraulic equipment to adjust the inclination angle of the purification units; The simulation device also includes at least one supporting rib welded on the side plate of the purification module, and each supporting rib is arranged corresponding to each purification module provided with the hydraulic device to bear the supporting force.

2. The simulation device according to claim 1, characterized in that The purification module comprises a stainless steel side plate, a stainless steel bottom plate, a sampling tube arranged on the side plate, and a connecting flange arranged at one end or both ends thereof; inside the purification unit, adjacent purification modules are sealedly connected via the connecting flange.

3. The simulation device according to claim 2, characterized in that The purification unit includes a plurality of the following purification modules: The first purification module has a connection flange fixedly disposed at one end and an opening at the other end to serve as a water inlet or outlet, and two sampling tubes are disposed on the side panel thereof; The second purification module has connection flanges fixedly arranged at both ends and four sampling tubes arranged on its side panels; The third purification module has a connection flange fixedly arranged at one end, a square grate fixedly welded on the side plate at the other end, and two sampling tubes arranged on the side plate; A fourth purification module is L-shaped, with connecting flanges fixedly provided at both ends, and four sampling tubes provided on its side panels; and The fifth purification module is L-shaped, and connection flanges are fixedly provided at both ends, and four sampling tubes are provided on the side panels thereof.

4. The simulation device according to claim 3, characterized in that The purification module group includes 4 purification units, and each purification unit includes 3 purification modules.

5. The simulation device according to any one of claims 1 to 3, characterized in that: The purification unit further comprises an online monitoring module, which is arranged on the top of the purification unit to monitor and analyze the mine water flowing through the purification unit.

6. The simulation device according to any one of claims 1 to 3, characterized in that: The size of the purification unit is 15m×1m×1m.

7. The simulation device according to any one of claims 1 to 3, characterized in that: Also includes: The circulation component is connected to the inlet and outlet of the purification module group, so that the purified mine water completes the circulation through the outlet, the circulation component and the inlet.

8. A method for purifying mine water by simulating underground reservoir rock mass using the simulation device according to any one of claims 1 to 7, comprising the following steps: Assembling the purification module group by the plurality of purification modules, and connecting the purification module group with the water storage assembly; Among two adjacent purification units connected with the flexible connector, one of the purification units is pivoted relative to the other purification unit around the axis of the flexible connector by a target angle; and The water storage component passes the mine water to be purified into the purification module group.

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