A simulation experimental device for mine water reinjection

Abstract

The present invention relates to the technical field of mine water reinjection, and specifically discloses a simulation experiment device for mine water reinjection, including an experiment chamber, wherein a soil sample layer is arranged inside the experiment chamber, and a lifting mechanism is arranged on both sides of the experiment chamber. The simulation experiment device for mine water reinjection can simulate the rock layer distribution of the mining area to be reinjected by setting the surface soil layer, rock layer, aquifer and aquiclude, operate the drilling mechanism and the lifting mechanism to carry the drilling pipe downward into the aquifer to perform the drilling operation, operate the electric push rods on both sides to carry the extrusion plate to move relatively and squeeze the soil sample layer, simulate the force distribution of the soil sample layer in the area where the experiment chamber is located, start the water pump to transport the water source inside the water storage tank to the hollow rotating shaft through the water outlet pipe, and the hollow rotating shaft transports the water to the drilling pipe to inject into the aquifer in the experiment chamber, and perform the simulation experiment of mine water reinjection, thereby achieving the purpose of simulating mine water reinjection.

Description

Technical Field

[0001] The invention relates to the technical field of mine water reinjection, in particular to a simulation experimental device for mine water reinjection. Background Art

[0002] During the coal mining process, groundwater comes into contact with coal seams and rock strata, and with the influence of human activities, a series of physical, chemical and biochemical reactions occur. As a result, the water quality has significant characteristics of the coal industry: the suspended matter content of mine water containing suspended matter is much higher than that of surface water, and the sensory properties are poor; the suspended matter has a small particle size, light specific gravity, slow sedimentation rate, and poor coagulation effect; mine water also contains organic pollutants such as waste engine oil and emulsified oil. The total ion content in mine water is much higher than that of general surface water, and a large part of it is sulfate ions. Mine water often has a very low pH value and is often accompanied by a large amount of ferrous ions, which increases the difficulty of treatment.

[0003] After the mine water is treated, it is necessary to inject the treated water back into the mine. In the mine water reinjection project, in order to understand the injectability of the strata around the mining area and the distribution range of the reservoir, determine the correct location of the reinjection site, and prevent the risks of mine water being unable to be reinjected or the reinjection volume being too small, it is usually necessary to construct one or more test holes for reinjection testing, which often requires a lot of manpower and material resources. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a simulation experimental device for mine water reinjection, which has the advantages of simulating mine water reinjection, etc., and solves the problem that in order to understand the injectability of the strata around the mining area and the distribution range of the reservoir, determine the correct location of the reinjection site, and prevent the risks of the mine water being unable to be reinjected or the reinjection amount being too small, it is usually necessary to construct one or more test holes, and it often takes a lot of manpower and material resources to conduct reinjection tests.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a simulation experiment device for mine water reinjection, comprising an experiment chamber, a soil sample layer is arranged inside the experiment chamber, a lifting mechanism is arranged on both sides of the experiment chamber, a drilling mechanism with one end extending to the inside of the experiment chamber is arranged on the lifting mechanism, a conveying mechanism is arranged on the lifting mechanism and located on the left side of the drilling mechanism, a liquid storage mechanism is arranged on the left side of the experiment chamber, a force applying mechanism is arranged on both sides of the experiment chamber and located between the lifting mechanism and the liquid storage mechanism, and a dust removal mechanism is arranged on the back of the experiment chamber;

[0006] The lifting mechanism includes a mounting plate, a hydraulic push rod and a cross plate. The left and right sides of the experimental chamber are fixedly mounted with mounting plates, the tops of the two mounting plates are fixedly mounted with hydraulic push rods, and the output ends of the two hydraulic push rods are fixedly mounted with cross plates;

[0007] The drilling mechanism includes a driving motor, a first belt pulley, a hollow rotating shaft, a second belt pulley, a transmission belt and a drilling tube. The driving motor is fixedly installed on the top of the transverse plate, the first belt pulley is fixedly installed on the output end of the driving motor, the drilling tube is rotatably installed on the bottom of the transverse plate, a hollow rotating shaft with one end penetrating the transverse plate and fixedly connected to the drilling tube is movably installed on the top of the transverse plate and located on the left side of the driving motor, the second belt pulley is fixedly installed on the outside of the hollow rotating shaft, the first belt pulley and the second belt pulley are movably connected through a transmission belt, and a diamond drill bit is fixedly installed on the bottom of the drilling tube.

[0008] Furthermore, a through hole is provided on the top of the experimental chamber, and the through hole matches the drilling tube.

[0009] Furthermore, the conveying mechanism includes a water pump, a water outlet pipe, a water inlet pipe, a water pressure sensor and a flow meter. A water pump is fixedly installed on the top of the horizontal plate and on the left side of the hollow rotating shaft. The water outlet of the water pump is connected to the water outlet pipe with one end rotatably connected to the hollow rotating shaft. The water inlet of the water pump is connected to the water inlet pipe with one end extending to the left side of the horizontal plate. A water pressure sensor is arranged on the outside of the water inlet pipe and at one end close to the water pump. A flow meter is arranged on the outside of the water inlet pipe and at one end away from the water pump.

[0010] Furthermore, the liquid storage mechanism includes a water tank, an observation window, a water injection pipe and a telescopic tube. The water tank is fixedly installed on the left side of the experimental chamber and below the force-applying mechanism. An observation window is embedded in the front of the water tank. The left side of the water tank is connected to a water injection pipe. The top of the water tank is connected to a telescopic tube with one end connected to the water inlet pipe. A water injection valve is arranged on the outside of the water injection pipe.

[0011] Furthermore, a scale is fixedly installed on the front of the water tank and on the right side of the observation window, and the water tank is a stainless steel box.

[0012] Furthermore, the force-applying mechanism includes a push rod frame, an electric push rod, a fixed rod and an extrusion plate. Two push rod frames are fixedly installed on the left and right sides of the experimental chamber and below the horizontal plate. Electric push rods are fixedly installed inside the push rod frames. A fixed rod with one end passing through and extending into the experimental chamber is fixedly installed on the output end of the electric push rod. An extrusion plate in contact with the soil sample layer is fixedly installed on the side opposite to the fixed rod on the left and right sides.

[0013] Furthermore, the soil sample layer includes a surface soil layer, a rock layer, an aquifer and an impermeable layer in sequence from top to bottom, and the impermeable layer is arranged on the inner bottom wall of the experimental chamber.

[0014] Furthermore, the dust removal mechanism includes a filter box, a fan, an air outlet pipe, a filter, an exhaust hole and an annular air inlet pipe. The filter box is fixedly installed on the back of the experimental chamber, and the fan is fixedly installed on the back of the experimental chamber and above the filter box. The air outlet of the fan is connected to the air outlet pipe with one end passing through and extending to the inside of the filter box, a filter is fixedly installed inside the filter box, an exhaust hole is opened at the bottom of the filter box, and the air inlet of the fan is connected to an annular air inlet pipe with one end passing through the experimental chamber and sleeved on the outside of the drilling pipe, and a suction nozzle is connected to the bottom of the annular air inlet pipe.

[0015] Furthermore, a plexiglass window is embedded on the front of the experimental chamber.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. The simulation experiment device for mine water reinjection can simulate the rock layer distribution of the mining area to be reinjected by setting the surface soil layer, rock layer, aquifer and impermeable layer. The drilling mechanism and the lifting mechanism are operated to carry the drilling pipe downward into the aquifer to perform drilling operations. The electric push rods on both sides are operated to carry the extrusion plates to move relative to squeeze the soil sample layer, simulating the force distribution of the soil sample layer in the area where the experimental chamber is located. The water pump is turned on to transport the water source in the water storage tank to the hollow rotating shaft through the water outlet pipe. The hollow rotating shaft transports the water to the drilling pipe and injects it into the aquifer in the experimental chamber to perform a simulation experiment of mine water reinjection, thereby achieving the purpose of simulating mine water reinjection.

[0018] 2. The simulated experimental device for mine water reinjection has a dust removal mechanism. When the fan is turned on, the dust generated by drilling can be sucked into the filter box by the annular air inlet pipe. The dust is intercepted by the filter net, and the purified air can be discharged from the exhaust hole, thus achieving the purpose of dust purification during the drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 It is a rear view of the present invention;

[0022] Figure 4 It is a front view of the present invention.

[0023] In the figure: 1 experimental bin, 2 soil sample layer, 3 lifting mechanism, 31 mounting plate, 32 hydraulic push rod, 33 cross plate, 4 drilling mechanism, 41 driving motor, 42 first belt pulley, 43 hollow rotating shaft, 44 second belt pulley, 45 transmission belt, 46 drilling pipe, 5 conveying mechanism, 51 water pump, 52 water outlet pipe, 53 water inlet pipe, 54 water pressure sensor, 55 flow meter, 6 liquid storage mechanism, 61 water storage tank, 62 observation window, 63 water injection pipe, 64 telescopic pipe, 7 force application mechanism, 71 push rod frame, 72 electric push rod, 73 fixed rod, 74 extrusion plate, 8 dust removal mechanism, 81 filter box, 82 fan, 83 air outlet pipe, 84 filter, 85 exhaust hole, 86 annular air inlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-4 In this embodiment, a simulation experiment device for mine water reinjection includes an experiment chamber 1, a soil sample layer 2 is arranged inside the experiment chamber 1, a lifting mechanism 3 is arranged on both sides of the experiment chamber 1, a drilling mechanism 4 with one end extending to the inside of the experiment chamber 1 is arranged on the lifting mechanism 3, a conveying mechanism 5 is arranged on the lifting mechanism 3 and located on the left side of the drilling mechanism 4, a liquid storage mechanism 6 is arranged on the left side of the experiment chamber 1, a force applying mechanism 7 is arranged on both sides of the experiment chamber 1 and located between the lifting mechanism 3 and the liquid storage mechanism 6, and a dust removal mechanism 8 is arranged on the back of the experiment chamber 1;

[0026] The lifting mechanism 3 includes a mounting plate 31, a hydraulic push rod 32 and a cross plate 33. The mounting plates 31 are fixedly mounted on the left and right sides of the experimental chamber 1. The tops of the two mounting plates 31 are fixedly mounted with hydraulic push rods 32. The output ends of the two hydraulic push rods 32 are fixedly mounted with cross plates 33.

[0027] The drilling mechanism 4 includes a driving motor 41, a first belt pulley 42, a hollow rotating shaft 43, a second belt pulley 44, a transmission belt 45 and a drilling tube 46. The driving motor 41 is fixedly installed on the top of the transverse plate 33, and the first belt pulley 42 is fixedly installed on the output end of the driving motor 41. The drilling tube 46 is rotatably installed on the bottom of the transverse plate 33. A hollow rotating shaft 43 with one end penetrating the transverse plate 33 and fixedly connected to the drilling tube 46 is movably installed on the top of the transverse plate 33 and located on the left side of the driving motor 41. The second belt pulley 44 is fixedly installed on the outer side of the hollow rotating shaft 43. The first belt pulley 42 and the second belt pulley 44 are movably connected through the transmission belt 45, and a diamond drill bit is fixedly installed on the bottom of the drilling tube 46.

[0028] Specifically, the driving motor 41 is turned on to rotate the first belt pulley 42, the first belt pulley 42 transmits power to the second belt pulley 44 through the transmission belt 45, the second belt pulley 44 rotates with the hollow rotating shaft 43 and the drilling tube 46, and the hydraulic push rod 32 is operated to extend the drilling tube 46 downward into the soil sample layer 2 to perform drilling operations.

[0029] In this embodiment, a through hole is opened on the top of the experimental chamber 1 , and the through hole matches the drilling tube 46 .

[0030] In this embodiment, the conveying mechanism 5 includes a water pump 51, a water outlet pipe 52, a water inlet pipe 53, a water pressure sensor 54 and a flow meter 55. The water pump 51 is fixedly installed on the top of the horizontal plate 33 and on the left side of the hollow rotating shaft 43. The water outlet of the water pump 51 is connected to the water outlet pipe 52, one end of which is rotatably connected to the hollow rotating shaft 43. The water inlet of the water pump 51 is connected to the water inlet pipe 53, one end of which extends to the left side of the horizontal plate 33. The water pressure sensor 54 is arranged on the outside of the water inlet pipe 53 and close to the water pump 51. The flow meter 55 is arranged on the outside of the water inlet pipe 53 and away from the water pump 51.

[0031] Specifically, turning on the water pump 51 can transport the water source inside the liquid storage mechanism 6 to the hollow rotating shaft 43 through the water outlet pipe 52. The flow meter 55 is used to monitor the water flow rate of the water outlet pipe 52 in real time. The water pressure sensor 54 is used to monitor the water pressure on the water outlet pipe 52 in real time, providing parameter basis for the mine water reinjection experiment.

[0032] In this embodiment, the liquid storage mechanism 6 includes a water tank 61, an observation window 62, a water injection pipe 63 and a telescopic tube 64. The water tank 61 is fixedly installed on the left side of the experimental chamber 1 and below the force-applying mechanism 7. An observation window 62 is embedded in the front of the water tank 61. The left side of the water tank 61 is connected to a water injection pipe 63. The top of the water tank 61 is connected to a telescopic tube 64 whose end is connected to the water inlet pipe 53. A water injection valve is arranged on the outside of the water injection pipe 63.

[0033] Specifically, water can be added into the water storage tank 61 through the water injection pipe 63 by opening the water injection valve. The setting of the observation window 62 facilitates the experimenter to check the remaining amount of water in the water storage tank 61.

[0034] In this embodiment, a scale is fixedly installed on the front of the water tank 61 and on the right side of the observation window 62, and the water tank 61 is a stainless steel box.

[0035] Specifically, stainless steel has excellent corrosion resistance and a long service life; the scale can check the water level in the water tank 61.

[0036] In this embodiment, the force-applying mechanism 7 includes a push rod frame 71, an electric push rod 72, a fixed rod 73 and an extrusion plate 74. Two push rod frames 71 are fixedly installed on the left and right sides of the experimental chamber 1 and below the horizontal plate 33. Electric push rods 72 are fixedly installed inside the push rod frames 71. The output end of the electric push rod 72 is fixedly installed with a fixed rod 73 with one end passing through and extending into the interior of the experimental chamber 1. An extrusion plate 74 in contact with the soil sample layer 2 is fixedly installed on the side opposite to the left fixed rod 73 and the right fixed rod 73.

[0037] Specifically, the electric push rods 72 on both sides are operated to move the extrusion plates 74 relatively to extrude the soil sample layer 2 , thereby simulating the force distribution of the soil sample layer 2 in the area where the experimental chamber 1 is located.

[0038] In this embodiment, the soil sample layer 2 includes a surface soil layer, a rock layer, an aquifer and an impermeable layer in sequence from top to bottom, and the impermeable layer is arranged on the inner bottom wall of the experimental chamber 1 .

[0039] Specifically, the distribution of rock layers in the mining area to be reinjected can be simulated by setting the surface soil layer, rock layer, aquifer and impermeable layer.

[0040] In this embodiment, the dust removal mechanism 8 includes a filter box 81, a fan 82, an air outlet pipe 83, a filter screen 84, an exhaust hole 85 and an annular air inlet pipe 86. The filter box 81 is fixedly installed on the back of the experimental chamber 1, and the fan 82 is fixedly installed on the back of the experimental chamber 1 and above the filter box 81. The air outlet of the fan 82 is connected to the air outlet pipe 83 with one end passing through and extending into the filter box 81. A filter screen 84 is fixedly installed inside the filter box 81. An exhaust hole 85 is provided at the bottom of the filter box 81. The air inlet of the fan 82 is connected to the annular air inlet pipe 86 with one end passing through the experimental chamber 1 and sleeved on the outside of the drilling tube 46. The bottom of the annular air inlet pipe 86 is connected to a suction nozzle.

[0041] Specifically, the fan 82 is turned on, and the dust generated by drilling can be sucked into the filter box 81 through the annular air inlet pipe 86, and the dust is intercepted by the filter 84. The purified air can be discharged from the exhaust hole 85, thereby achieving the purpose of dust purification during the drilling process.

[0042] In this embodiment, a plexiglass window is embedded on the front of the experimental chamber 1.

[0043] Specifically, the organic glass window is provided to facilitate the experimenter to check the water filling condition in the experiment chamber 1 .

[0044] The working principle of the above embodiment is:

[0045] (1) The rock layer distribution of the mining area to be re-injected can be simulated by setting the surface soil layer, rock layer, aquifer and impermeable layer;

[0046] (2) Turn on the driving motor 41 to rotate the first belt pulley 42. The first belt pulley 42 transmits power to the second belt pulley 44 through the transmission belt 45. The second belt pulley 44 rotates the hollow rotating shaft 43 and the drilling pipe 46. The hydraulic push rod 32 is operated to extend the drilling pipe 46 downward into the aquifer to perform the drilling operation;

[0047] (3) The electric push rods 72 on both sides are operated to move the squeezing plates 74 relative to squeeze the soil sample layer 2, simulating the force distribution of the soil sample layer 2 in the area where the experimental chamber 1 is located, and the water pump 51 is turned on to transport the water source in the water storage tank 61 to the hollow rotating shaft 43 through the water outlet pipe 52. The hollow rotating shaft 43 transports the water to the drilling pipe 46 and injects it into the aquifer in the experimental chamber 1 to conduct a simulation experiment of mine water reinjection;

[0048] (4) The flow meter 55 is used to monitor the water flow rate of the water outlet pipe 52 in real time, and the water pressure sensor 54 is used to monitor the water pressure on the water outlet pipe 52 in real time, so as to provide parameter basis for the mine water reinjection experiment.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simulation experimental device for mine water reinjection, comprising an experimental chamber (1), characterized in that: A soil sample layer (2) is arranged inside the experimental chamber (1), a lifting mechanism (3) is arranged on both the left and right sides of the experimental chamber (1), a drilling mechanism (4) with one end extending into the interior of the experimental chamber (1) is arranged on the lifting mechanism (3), a conveying mechanism (5) is arranged on the lifting mechanism (3) and on the left side of the drilling mechanism (4), a liquid storage mechanism (6) is arranged on the left side of the experimental chamber (1), a force application mechanism (7) is arranged on the left and right sides of the experimental chamber (1) and between the lifting mechanism (3) and the liquid storage mechanism (6), and a dust removal mechanism (8) is arranged on the back side of the experimental chamber (1); The lifting mechanism (3) comprises a mounting plate (31), a hydraulic push rod (32) and a transverse plate (33); the mounting plates (31) are fixedly mounted on the left and right sides of the experimental chamber (1); the tops of the two mounting plates (31) are fixedly mounted with hydraulic push rods (32); and the output ends of the two hydraulic push rods (32) are fixedly mounted with transverse plates (33); The drilling mechanism (4) comprises a driving motor (41), a first belt pulley (42), a hollow rotating shaft (43), a second belt pulley (44), a transmission belt (45) and a drilling tube (46); the driving motor (41) is fixedly mounted on the top of the transverse plate (33); the first belt pulley (42) is fixedly mounted on the output end of the driving motor (41); the drilling tube (46) is rotatably mounted on the bottom of the transverse plate (33); and a rotating shaft (43) is movably mounted on the top of the transverse plate (33) and located on the left side of the driving motor (41) and a transmission belt (45) is provided. A hollow rotating shaft (43) is fixedly connected to the horizontal plate (33) and the drilling tube (46); a second belt pulley (44) is fixedly installed on the outer side of the hollow rotating shaft (43); the first belt pulley (42) and the second belt pulley (44) are movably connected through a transmission belt (45); a diamond drill bit is fixedly installed on the bottom of the drilling tube (46); the conveying mechanism (5) includes a water pump (51), a water outlet pipe (52), a water inlet pipe (53), a water pressure sensor (54) and a flow meter (55); the top of the horizontal plate (33) A water pump (51) is fixedly installed on the left side of the hollow rotating shaft (43), the water outlet of the water pump (51) is connected to a water outlet pipe (52) having one end rotatably connected to the hollow rotating shaft (43), the water inlet of the water pump (51) is connected to a water inlet pipe (53) having one end extending to the left side of the horizontal plate (33), a water pressure sensor (54) is arranged on the outside of the water inlet pipe (53) and close to the water pump (51), and a flow meter (55) is arranged on the outside of the water inlet pipe (53) and away from the water pump (51). The liquid storage mechanism (6) comprises a water storage tank (61), an observation window (62), a water injection pipe (63) and a telescopic pipe (64); the water storage tank (61) is fixedly installed on the left side of the experimental chamber (1) and below the force-applying mechanism (7); the observation window (62) is embedded in the front of the water storage tank (61); the left side of the water storage tank (61) is connected to the water injection pipe (63); the top of the water storage tank (61) is connected to the telescopic pipe (64) whose end is connected to the water inlet pipe (53); and the outer side of the water injection pipe (63) is provided with a water injection valve.

2. A simulation experimental device for mine water reinjection according to claim 1, characterized in that: The top of the experimental chamber (1) is provided with a through hole, and the through hole matches the drilling tube (46).

3. The simulation experimental device for mine water reinjection according to claim 1, characterized in that: A scale is fixedly installed on the front of the water storage tank (61) and on the right side of the observation window (62); the water storage tank (61) is a stainless steel box.

4. The simulation experimental device for mine water reinjection according to claim 1, characterized in that: The force-applying mechanism (7) comprises a push rod frame (71), an electric push rod (72), a fixed rod (73) and an extrusion plate (74); two push rod frames (71) are fixedly installed on the left and right sides of the experimental chamber (1) and located below the horizontal plate (33); an electric push rod (72) is fixedly installed inside the push rod frame (71); a fixed rod (73) having one end penetrating and extending into the interior of the experimental chamber (1) is fixedly installed at the output end of the electric push rod (72); and an extrusion plate (74) in contact with the soil sample layer (2) is fixedly installed on the side opposite to the fixed rod (73) on the left side.

5. The simulation experimental device for mine water reinjection according to claim 1, characterized in that: The soil sample layer (2) comprises a surface soil layer, a rock layer, an aquifer and an impermeable layer in sequence from top to bottom, and the impermeable layer is arranged on the inner bottom wall of the experimental chamber (1).

6. The simulation experimental device for mine water reinjection according to claim 1, characterized in that: The dust removal mechanism (8) comprises a filter box (81), a fan (82), an air outlet pipe (83), a filter screen (84), an exhaust hole (85) and an annular air inlet pipe (86); the filter box (81) is fixedly mounted on the back of the experimental chamber (1); the fan (82) is fixedly mounted on the back of the experimental chamber (1) and located above the filter box (81); the air outlet of the fan (82) is connected to an air outlet pipe (83) having one end penetrating through and extending into the interior of the filter box (81); the filter screen (84) is fixedly mounted inside the filter box (81); the bottom of the filter box (81) is provided with an exhaust hole (85); the air inlet of the fan (82) is connected to an annular air inlet pipe (86) having one end penetrating through the experimental chamber (1) and sleeved on the outside of the drilling pipe (46); the bottom of the annular air inlet pipe (86) is connected to a suction nozzle.

7. The simulation experimental device for mine water reinjection according to claim 1, characterized in that: The front of the experimental chamber (1) is embedded with an organic glass window.

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