Coal reservoir physical fluidization mining integrated equipment and use method

Abstract

The invention discloses coal reservoir physical fluidization mining integrated equipment and a using method, and relates to the technical field of coal mining, the coal reservoir physical fluidization mining integrated equipment comprises a shell, a mining mechanism, a water jet mechanism, a conveying mechanism, a smashing mechanism and a moving mechanism, the mining mechanism comprises a cutterhead shell, a cutting cutterhead, a cutterhead driving assembly and a hobbing cutter set, the cutterhead driving assembly is arranged in the cutterhead shell and used for driving the cutting cutterhead to rotate, a hob set is arranged at the front end of the cutting cutterhead, and a plurality of feeding holes are formed in the cutting cutterhead; the water jet mechanism comprises a water supply assembly and a plurality of water jet nozzles, and each mounting hole is provided with one water jet nozzle; a conveying cavity and a smashing cavity are sequentially formed in the shell from front to back, one end of the conveying mechanism is installed in the cutter head shell, the other end of the conveying mechanism is installed in the conveying cavity, and the smashing mechanism is arranged in the smashing cavity. According to the equipment and the using method, mining, conveying, crushing, moving and fluidization treatment are integrated, the occupied space is small, the mining efficiency is improved, and the mining cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to a coal reservoir physical fluidization mining integrated device and a use method thereof. Background Art

[0002] In traditional coal mining technology, large machinery and heavy equipment are widely used in underground coal mining operations. These equipment have obvious limitations in flexibility and adaptability when faced with complex and changeable geological conditions, narrow mining space and environmental protection requirements.

[0003] Especially for soft coal seams, during the drilling process, due to the influence of objective environmental forces such as ground stress and gas pressure, drill holes are easily formed inside the borehole, leading to problems such as hole collapse, drill suction, blowholes and coal drills, which seriously affect the efficiency of gas extraction. At the same time, when constructing shafts and tunnels in soft coal seams, since the hardness coefficient f of coal is less than 1, it leads to difficulties such as high tunnel pressure, fault crossing, soft and broken rocks, etc., and the conventional construction methods and support forms and support structures often do not work. Therefore, the mining technology of soft coal seams faces many challenges, including drilling difficulties, low gas extraction efficiency, low level of technical equipment, tunneling technology problems and surrounding rock control problems. These difficulties need to be overcome through technological innovation and equipment upgrades.

[0004] The in-situ fluidized mining technology of coal mines is gradually gaining wide recognition in the industry. In this technical field, the main technical means currently used rely on large-scale mining equipment. However, the existing large-scale mining equipment only has the mining function, which is single-function and needs to cooperate with other equipment to complete the transmission, crushing and mixing of coal and water, resulting in low mining efficiency and high mining cost, and large space occupation. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an integrated coal reservoir physical fluidization mining equipment and a method of use, which integrates mining, transmission, crushing, movement and fluidization processing, occupies a small space, improves mining efficiency and reduces mining costs.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an integrated coal reservoir physical fluidization mining equipment, comprising a shell, a mining mechanism, a water jet mechanism, a transmission mechanism, a crushing mechanism and a moving mechanism, wherein the mining mechanism comprises a cutter disc housing, a cutting cutter disc, a cutter disc driving assembly and a roller cutter group, wherein the cutter disc housing is arranged at the front end of the shell, the cutting cutter disc is rotatably mounted at the front end of the cutter disc housing, the cutter disc driving assembly is arranged in the cutter disc housing and is used to drive the cutting cutter disc to rotate, the roller cutter group is arranged at the front end of the cutting cutter disc, a plurality of feed holes are arranged on the cutting cutter disc, and a plurality of mounting holes are arranged on the cutting cutter disc; The water jet mechanism includes a water supply component and a plurality of water jet nozzles, each of the mounting holes is provided with a water jet nozzle, the water supply component is arranged on the shell, and is used to supply water to the water jet nozzle; a transmission chamber and a crushing chamber are arranged in sequence from front to back in the shell, the front end of the transmission chamber is connected to the outlet at the rear end of the cutter disc shell, one end of the transmission mechanism is installed in the cutter disc shell, and the other end is installed in the transmission chamber, the crushing mechanism is arranged in the crushing chamber, the rear end of the shell is provided with a discharge port corresponding to the position of the crushing chamber, and the moving mechanism is arranged at the bottom of the shell.

[0008] Preferably, a support frame is provided in the cutter disc housing, and a central shaft at the rear end of the cutting cutter disc is rotatably mounted on the support frame via a bearing, and the cutter disc drive assembly is used to drive the central shaft to rotate.

[0009] Preferably, the cutter disc drive assembly includes a cutter disc motor and a transmission gear box, and the cutter disc motor and the transmission gear box are both arranged in the upper part of the cutter disc housing, the cutter disc motor is connected to the power input end of the transmission gear box, and the power output end of the transmission gear box is connected to the center shaft.

[0010] Preferably, the plurality of cutting wheels include a plurality of single-edge cutting wheels and a plurality of double-edge cutting wheels.

[0011] Preferably, the water supply assembly includes a water pump, a water pump motor, a rotary joint, a main hose and a plurality of branch hoses, the water pump and the water pump motor are both arranged on the upper part of the shell, the water pump motor is used to drive the water pump, one end of the main hose is connected to the outlet of the water pump through the rotary joint, and the other end of the main hose is connected to a plurality of branch hoses, and one end of each branch hose away from the main hose is connected to one of the water jet nozzles.

[0012] Preferably, the transmission mechanism includes a first support, a second support, a screw and a transmission motor, the first support is arranged at the lower part of the cutter disc housing, the second support is arranged at one end of the transmission chamber close to the crushing chamber, the two ends of the screw are rotatably installed in the first support and the second support respectively, the transmission motor is arranged on the second support, and is used to drive the screw to rotate.

[0013] Preferably, the crushing mechanism includes two crushing components, and the two crushing components are arranged in the crushing chamber from left to right in sequence. The crushing components include a crushing motor, a rotating shaft and a plurality of crushing blades. The rotating shaft is vertically arranged in the crushing chamber, and the two ends of the rotating shaft are rotatably installed on the shell body respectively. The rotating shaft is sequentially provided with a plurality of crushing blades along the axial direction. The crushing motor is arranged on the shell body and connected to the upper end of the rotating shaft. The plurality of crushing blades on the two rotating shafts are staggered.

[0014] Preferably, the transmission chamber includes a cylindrical chamber and a conical chamber arranged in sequence from front to back, the front end of the cylindrical chamber is connected to the outlet at the rear end of the cutter disc housing, the rear end of the conical chamber is connected to the crushing chamber, the cross-sectional area of ​​the conical chamber gradually increases from front to back, and the cross-sectional area of ​​the front end of the conical chamber is the same as the cross-sectional area of ​​the cylindrical chamber.

[0015] Preferably, the moving mechanism comprises a moving crawler track and a crawler track motor, the moving crawler track is arranged at the bottom of the shell, and the crawler track motor is used to drive the moving crawler track to move.

[0016] The present invention also provides a method for using the coal reservoir physical fluidization mining integrated equipment, comprising the following steps:

[0017] Step 1: construct a vertical shaft until it reaches below the coal seam to be mined, dig a storage tank at the bottom of the shaft, and set up a shaft hoisting system at the wellhead;

[0018] Step 2: Use the shaft hoisting system to transport the coal reservoir physical fluidization mining integrated equipment to a predetermined position in the shaft, ensuring that the coal reservoir physical fluidization mining integrated equipment is close to the coal seam, so that the cutting disc of the coal reservoir physical fluidization mining integrated equipment faces the coal seam;

[0019] Step 3: When the cutting disc of the coal reservoir physical fluidization mining integrated equipment contacts the coal seam, the cutting disc drive assembly is started to rotate the cutting disc and cut the coal seam along a certain upward coal mining route; at the same time, the water supply assembly, the transmission mechanism and the crushing mechanism are started synchronously;

[0020] Step 4: The coal powder particles generated during the cutting process are transmitted to the pulverizing mechanism through the transmission mechanism, and the pulverizing mechanism further refines the coal powder;

[0021] Step 5: The crushed coal powder is then discharged to the rear of the coal reservoir physical fluidization mining integrated equipment and falls into the roadway; the water jet generated at the front end of the coal reservoir physical fluidization mining integrated equipment forms a water flow in the roadway, so that the coal powder behind the coal reservoir physical fluidization mining integrated equipment is converted into a fluidized coal-water mixture. Under the inclination of the roadway, the coal-water mixture is driven by the water flow and continuously flows to the rear of the mining, and finally falls in the shaft;

[0022] Step six: the coal-water mixture falls into the storage pool at the bottom of the wellbore through the wellbore, and is transported to the ground through a pumping system; subsequently, the coal, water and coalbed methane are separated and collected through a coal-water-gas three-phase separation device.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] The integrated equipment for physical fluidization mining of coal reservoirs of the present invention comprises a shell, a mining mechanism, a water jet mechanism, a transmission mechanism, a crushing mechanism and a moving mechanism. Based on the ground drilling and vertical shaft hoisting system, the integrated equipment for physical fluidization mining of coal reservoirs is placed in the coal seam and can move autonomously in the tunnel to realize the mining and fine crushing of the coal body. The technology combining the cutting disc and the high-pressure water jet is adopted to realize the efficient cutting and crushing of the coal body, which significantly improves the efficiency of coal mining. The mined coal body is transported to the crushing chamber by the transmission mechanism and crushed by the crushing mechanism, which further reduces the particle size of the cut coal body to meet the particle size allowed by the pumping process in the fluidized mining process, thereby realizing the continuity of mining and transportation, reducing the intermediate links and improving the working efficiency. The flushing effect of high-pressure water jets promotes the fluidization of coal bodies, provides conditions for the self-flowing transportation of coal bodies in the tunnels, and thus reduces the dependence on traditional transportation equipment. Under the dual effects of high-pressure water flow and gravity, the crushed coal bodies flow along the tunnels into the shaft by gravity, and finally gather in the storage pool at the bottom of the shaft, realizing the continuous transportation of coal bodies and reducing the energy consumption and equipment requirements of the transportation link. The present invention integrates mining, transmission, crushing, movement and fluidization processing, occupies a small space, improves mining efficiency, and reduces mining costs. It is a miniaturized, integrated, and efficient coal reservoir physical fluidization mining integrated equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A three-dimensional structural diagram of the coal reservoir physical fluidization mining integrated equipment provided by the present invention;

[0027] Figure 2 The internal structure diagram of the coal reservoir physical fluidization mining integrated equipment provided by the present invention;

[0028] Figure 3 A front view of the coal reservoir physical fluidization mining integrated equipment provided by the present invention;

[0029] Figure 4 A schematic diagram of the use of the coal reservoir physical fluidization mining integrated equipment provided by the present invention.

[0030] Explanation of the reference numerals: 100, integrated equipment for physical fluidization mining of coal reservoirs; 1, shell; 2, mobile crawler; 3, water pump; 4, water pump motor; 5, cutter head housing; 6, cutting cutter head; 7, single-edged hoist; 8, double-edged hoist; 9, feed hole; 10, water jet nozzle; 11, cylindrical cavity; 12, conical cavity; 13, crushing cavity; 14, screw; 15, transmission motor; 16, crushing blade; 200, coal seam; 300, shaft; 400, vertical shaft hoisting system; 500, storage tank; 600, pumping system; 700, coal-water mixture; 800, coal-water-gas three-phase separation device. DETAILED DESCRIPTION

[0031] 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.

[0032] The purpose of the present invention is to provide an integrated device for physical fluidization mining of coal reservoirs and a method for using the device, which integrates mining, transmission, crushing, movement and fluidization processing, occupies a small space, improves mining efficiency and reduces mining costs.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1-Figure 4 As shown, this embodiment provides an integrated coal reservoir physical fluidization mining equipment 100, including a shell 1, a mining mechanism, a water jet mechanism, a transmission mechanism, a crushing mechanism and a moving mechanism. The mining mechanism includes a cutterhead shell 5, a cutting cutterhead 6, a cutterhead drive assembly and a roller cutter group. The cutterhead shell 5 is arranged at the front end of the shell 1, and the cutting cutterhead 6 is rotatably installed at the front end of the cutterhead shell 5. The cutterhead drive assembly is arranged in the cutterhead shell 5 and is used to drive the cutting cutterhead 6 to rotate. A roller cutter group is arranged at the front end of the cutting cutterhead 6. A plurality of feed holes 9 are arranged on the cutting cutterhead 6. The cut and crushed coal body can enter the cutterhead shell 5 through the feed hole 9. The cutting cutterhead 6 is provided with a plurality of mounting holes; the water jet mechanism includes a water supply assembly and a plurality of water jet nozzles 10, and each mounting hole is provided with a water jet nozzle 10. , a water supply assembly is arranged on the shell 1, and is used to supply water to the water jet nozzle 10; a transmission chamber and a crushing chamber 13 are arranged in sequence in the shell 1 from front to back, the front end of the transmission chamber is connected to the outlet at the rear end of the cutter head shell 5, one end of the transmission mechanism is installed in the cutter head shell 5, and the other end is installed in the transmission chamber, the transmission mechanism is used to transport the coal body in the cutter head shell 5 backward to the crushing chamber 13, the crushing mechanism is arranged in the crushing chamber 13, and the rear end of the shell 1 is provided with a discharge port corresponding to the position of the crushing chamber 13, the crushing mechanism is used to further crush the coal body transported to the crushing chamber 13 to avoid the generation of large-size coal blocks, and then discharged to the rear of the coal reservoir physical fluidization mining integrated equipment 100 through the discharge port, and the moving mechanism is arranged at the bottom of the shell 1, and the moving mechanism is used to drive the entire equipment to move.

[0035] When in use, based on the ground drilling and vertical shaft hoisting system 400, the coal reservoir physical fluidization mining integrated equipment 100 is placed in the coal seam 200, and can move autonomously in the tunnel to realize the mining and fine crushing of the coal body. The technology of combining the cutting disc 6 with the high-pressure water jet is adopted to realize the efficient cutting and crushing of the coal body, which significantly improves the efficiency of coal mining. The mined coal body is transported to the crushing chamber 13 through the transmission mechanism and crushed by the crushing mechanism, further reducing the particle size of the cut coal body to meet the particle size allowed by the pumping process in the fluidized mining process, thereby realizing the continuity of mining and transportation, reducing the intermediate links, and improving the working efficiency. The flushing effect of the high-pressure water jet promotes the fluidization of the coal body and provides conditions for the gravity transportation of the coal body in the tunnel, thereby reducing the dependence on traditional transportation equipment. Under the dual effects of high-pressure water flow and gravity, the crushed coal body flows along the tunnel into the shaft 300 by gravity, and finally gathers in the storage tank 500 at the bottom of the shaft 300, realizing the continuous transportation of the coal body and reducing the energy consumption and equipment requirements in the transportation link.

[0036] The present embodiment integrates mining, transmission, crushing, movement and fluidization processing, has a compact structure, a small overall size, and occupies a small space. The disturbance to the coal seam 200 during the mining process is minimized, thereby effectively protecting the integrity of the structure of the coal seam 200, reducing the impact on the surrounding environment, improving mining efficiency, and reducing mining costs. It is a miniaturized, integrated, and highly efficient coal reservoir physical fluidization mining integrated equipment 100. The coal reservoir physical fluidization mining integrated equipment 100 in the present embodiment realizes the mining and crushing of the coal body, and at the same time converts the crushed coal body into a fluidized resource that can be transmitted, which not only avoids dust pollution in the tunnel, but also can adapt to narrow mining space, improves the operating efficiency under complex geological conditions, and achieves the purpose of safe and efficient in-situ mining of the coal reservoir.

[0037] A support frame is provided in the cutter disc housing 5, and the central axis at the rear end of the cutting cutter disc 6 is rotatably mounted on the support frame through a bearing, and the cutting cutter disc 6 fits with the front end of the cutter disc housing 5, and the cutter disc drive assembly is used to drive the central axis to rotate.

[0038] The cutter disc drive assembly includes a cutter disc motor and a transmission gear box, both of which are arranged at the upper part of the cutter disc housing 5, the cutter disc motor is connected to the power input end of the transmission gear box, and the power output end of the transmission gear box is connected to the central shaft. The transmission gear box and the cutter disc motor in this embodiment are arranged in sequence from front to back.

[0039] The plurality of roller cutters include a plurality of single-edged roller cutters 7 and a plurality of double-edged roller cutters 8. The surface shape of the cutting disc 6 adopts a spoke plate type, and a feed hole 9 is arranged between any two adjacent spoke plates. The plurality of double-edged roller cutters 8 are concentrated in the middle of the spoke plate, and the plurality of single-edged roller cutters 7 are arranged on the surface of the spoke plate in a concentric circle to improve cutting efficiency and uniformity.

[0040] In this specific embodiment, the cutter disc housing 5 and the cutting cutter disc 6 are both welded by steel structures, and the diameter of the cutting cutter disc 6 is 0.3m to 0.5m.

[0041] In this specific embodiment, the shell 1 is a cylindrical flexible shell. The cylindrical flexible shell has a certain tolerance to the collision and friction generated when the coal reservoir physical fluidization mining integrated equipment 100 moves in the coal seam 200, and is not prone to wear.

[0042] Specifically, the specific material of the cylindrical flexible shell is thermoplastic polyurethane or carbon fiber composite material, which has wear resistance, flexibility and tear resistance, can withstand greater collisions and frictions, and has good processing performance and plasticity.

[0043] The water supply assembly includes a water pump 3, a water pump motor 4, a rotary joint, a main hose and a plurality of branch hoses. The water pump 3 and the water pump motor 4 are both arranged at the upper part of the housing 1. The water pump motor 4 is used to drive the water pump 3. The inlet of the water pump 3 is used to connect to a water source. One end of the main hose is connected to the outlet of the water pump 3 through a rotary joint. The other end of the main hose is connected to a plurality of branch hoses. The end of each branch hose away from the main hose is connected to a water jet nozzle 10. The water jet nozzle 10 is arranged on the cutting disc 6 and rotates with the cutting disc 6. The rotary joint is arranged so that the plurality of branch hoses and the main hose can rotate with the water jet nozzle 10.

[0044] During operation, the water in the water pump 3 is converted into high-pressure water flow through the main hose and the branch hose, and is sprayed out by the water jet nozzle 10 to flush the coal body cut in front and soften the coal body in front of the equipment to reduce the strength of the coal body, promote the crushing process of the coal body and convert it into a form of resource that is easy to transport. At the same time, it promotes the conversion of coal powder that falls into the tunnel into a fluidized state that is easy to transport.

[0045] In this specific embodiment, the jet direction of the water jet nozzle 10 is perpendicular to the cutting blade disc 6. There are four water jet nozzles 10, which are distributed in the middle of the cutting blade disc 6 and are evenly distributed along the circumference of the cutting blade disc 6.

[0046] In this specific embodiment, both the main hose and the branch hose are high-pressure hoses.

[0047] The transmission mechanism includes a first support, a second support, a screw 14 and a transmission motor 15. The first support is arranged at the lower part of the cutter head housing 5, the second support is arranged at one end of the transmission chamber close to the crushing chamber 13, the two ends of the screw 14 are rotatably mounted in the first support and the second support respectively, and the transmission motor 15 is arranged on the second support and is used to drive the screw 14 to rotate. When working, the transmission motor 15 drives the screw 14 to rotate, and transports the coal in the cutter head housing 5 to the crushing chamber 13.

[0048] Specifically, one end of the screw rod 14 is rotatably mounted in the first support via a bearing, and the other end of the screw rod 14 is rotatably mounted in the second support via a bearing.

[0049] The crushing mechanism includes two crushing components, which are arranged in the crushing chamber 13 from left to right. The crushing components include a crushing motor, a rotating shaft and a plurality of crushing blades 16. The rotating shaft is vertically arranged in the crushing chamber 13, and the two ends of the rotating shaft are rotatably mounted on the shell 1 respectively. A plurality of crushing blades 16 are arranged in sequence on the rotating shaft along the axial direction. The crushing motor is arranged on the shell 1 and connected to the upper end of the rotating shaft. The plurality of crushing blades 16 on the two rotating shafts are staggered.

[0050] When working, the crushing motor is started, and when it contacts the coal body, the crushing blades 16 squeeze each other to discharge small-size coal powder. The two crushing motors control the two rotating shafts respectively, and then the rotation speed and direction of the crushing blades 16 on the two rotating shafts respectively, so as to optimize the crushing effect.

[0051] In this specific embodiment, the crushing blade 16 is made of special alloy steel.

[0052] The transmission chamber includes a cylindrical chamber 11 and a conical chamber 12 arranged in sequence from front to back, the front end of the cylindrical chamber 11 is connected to the outlet at the rear end of the cutter housing 5, the rear end of the conical chamber 12 is connected to the crushing chamber 13, the cross-sectional area of ​​the conical chamber 12 gradually increases from front to back, and the cross-sectional area of ​​the front end of the conical chamber 12 is the same as the cross-sectional area of ​​the cylindrical chamber 11. In this embodiment, the cylindrical chamber 11 is a cylindrical chamber.

[0053] The second support is arranged at the connection of the cylindrical cavity 11 and the conical cavity 12, and the transmission motor 15 is arranged in the conical cavity 12. The conical cavity 12 is arranged to connect the cylindrical cavity 11 provided with the screw 14 and the crushing cavity 13, so that the cut coal body can be smoothly transitioned and continuously crushed.

[0054] The moving mechanism includes a moving crawler 2 and a crawler motor. The moving crawler 2 is arranged at the bottom of the shell 1. The crawler motor is used to drive the moving crawler 2 to move. The moving crawler 2 is controlled by the crawler motor to realize the movement and steering of the entire equipment.

[0055] The coal reservoir physical fluidization mining integrated equipment 100 in this embodiment is equipped with a mobile crawler 2, which can move and turn autonomously in the tunnel, thereby improving the maneuverability and flexibility of the equipment, realizing intelligent unmanned mining of coal mines, and improving the safety of coal mining.

[0056] The cutter head motor, water pump motor 4, transmission motor 15, crushing motor and crawler motor in this embodiment are all high-power motors to ensure the continuity and efficiency of the equipment during the tunnel excavation process.

[0057] For the nearly horizontal soft coal seam 200, in order to allow the coal-water mixture 700 to flow back to the bottom of the well along the tunnel, the moving direction of the coal reservoir physical fluidization mining integrated equipment 100 needs to have a certain inclination angle with the inclination of the coal seam 200, and mining should be carried out along the upward inclination of the coal seam 200; for the inclined coal seam 200, during the mining process, the moving direction of the coal reservoir physical fluidization mining integrated equipment 100 needs to be consistent with the inclination of the coal seam 200, and mining should be carried out along the upward inclination of the coal seam 200.

[0058] like Figure 4 As shown, this embodiment also provides a method for using the coal reservoir physical fluidization mining integrated equipment 100, comprising the following steps:

[0059] Step 1: construct a vertical shaft 300 until it is below the coal seam 200 to be mined. The diameter of the shaft 300 does not need to be too large. A storage tank 500 is excavated at the bottom of the shaft 300 to receive the coal-water mixture 700 after mining. A pumping system 600 is provided near the storage tank 500 to transport the coal-water mixture 700 at the bottom of the storage tank 500 to the ground for separation; and a shaft hoisting system 400 is set up at the wellhead to realize the rapid deployment of the integrated equipment 100 for physical fluidization mining of coal reservoirs.

[0060] Step 2: Use the vertical shaft hoisting system 400 to transport the coal reservoir physical fluidization mining integrated equipment 100 to a predetermined position in the shaft 300, ensuring that the coal reservoir physical fluidization mining integrated equipment 100 is close to the coal seam 200, so that the cutting disc 6 of the coal reservoir physical fluidization mining integrated equipment 100 is facing the coal seam 200, so as to efficiently carry out contact and preliminary cutting operations on the coal seam 200.

[0061] Step 3: When the cutting disc 6 of the coal reservoir physical fluidization mining integrated equipment 100 contacts the coal seam 200, the disc drive assembly is started, that is, the disc motor is started, so that the cutting disc 6 rotates and continuously and stably cuts the coal seam 200 along a certain upward coal mining route; at the same time, the water supply assembly, the transmission mechanism and the crushing mechanism are started synchronously, that is, the water pump motor 4, the transmission motor 15 and the crushing motor are started synchronously. The high-pressure water flow and the cutting disc 6 work synchronously. This dual action mechanism not only significantly improves the mining and crushing efficiency of the coal body, but also ensures the initial refinement of the coal body particles.

[0062] Step 4: The coal powder particles generated during the cutting process are transmitted to the crushing mechanism through the transmission mechanism, and the crushing mechanism further refines the coal powder.

[0063] Step 5. The crushed coal powder is then discharged to the rear of the coal reservoir physical fluidization mining integrated equipment 100 and falls into the tunnel; the water jet generated at the front end of the coal reservoir physical fluidization mining integrated equipment 100 forms a water flow in the tunnel, so that the coal powder behind the coal reservoir physical fluidization mining integrated equipment 100 is converted into a fluidized coal-water mixture 700, thereby improving the fluidity of the coal powder. Under the inclination of the tunnel, the coal-water mixture 700 is driven by the water flow and continuously flows to the rear of the mining, and finally falls together at the shaft 300.

[0064] Step six, the coal-water mixture 700 falls into the storage pool 500 at the bottom of the wellbore 300 through the wellbore 300, and is transported to the ground through the pumping system 600; then, the coal, water and coalbed methane are separated and collected through the coal-water-gas three-phase separation device 800, thereby completing the entire process of in-situ fluidized mining of coal and coalbed methane.

[0065] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A coal reservoir physical fluidization mining integrated equipment, characterized in that: The invention comprises a shell, an excavation mechanism, a water jet mechanism, a transmission mechanism, a crushing mechanism and a moving mechanism, wherein the excavation mechanism comprises a cutter disc housing, a cutting cutter disc, a cutter disc driving assembly and a roller cutter group, wherein the cutter disc housing is arranged at the front end of the shell, the cutting cutter disc is rotatably mounted at the front end of the cutter disc housing, the cutter disc driving assembly is arranged in the cutter disc housing and is used to drive the cutting cutter disc to rotate, the roller cutter group is arranged at the front end of the cutting cutter disc, a plurality of feed holes are arranged on the cutting cutter disc, and a plurality of mounting holes are arranged on the cutting cutter disc; the water jet mechanism comprises a water supply assembly The shell body is provided with a plurality of water jet nozzles, each of the mounting holes is provided with a water jet nozzle, the water supply assembly is provided on the shell body, and is used to supply water to the water jet nozzle; a transmission chamber and a crushing chamber are sequentially provided in the shell body from front to back, the front end of the transmission chamber is connected with the outlet at the rear end of the cutter disc shell, one end of the transmission mechanism is installed in the cutter disc shell, and the other end is installed in the transmission chamber, the crushing mechanism is arranged in the crushing chamber, the rear end of the shell body is provided with a discharge port corresponding to the position of the crushing chamber, and the moving mechanism is arranged at the bottom of the shell body.

2. The coal reservoir physical fluidization mining integrated equipment according to claim 1 is characterized in that: A support frame is arranged in the cutter disc housing, and a central shaft at the rear end of the cutting cutter disc is rotatably mounted on the support frame via a bearing, and the cutter disc drive assembly is used for driving the central shaft to rotate.

3. The coal reservoir physical fluidization mining integrated equipment according to claim 2 is characterized in that: The cutter disc drive assembly includes a cutter disc motor and a transmission gear box, both of which are arranged in the upper part of the cutter disc housing, the cutter disc motor is connected to the power input end of the transmission gear box, and the power output end of the transmission gear box is connected to the central shaft.

4. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The plurality of cutting units include a plurality of single-edge cutting units and a plurality of double-edge cutting units.

5. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The water supply assembly includes a water pump, a water pump motor, a rotary joint, a main hose and multiple branch hoses. The water pump and the water pump motor are both arranged on the upper part of the shell. The water pump motor is used to drive the water pump. One end of the main hose is connected to the outlet of the water pump through the rotary joint, and the other end of the main hose is connected to multiple branch hoses. The end of each branch hose away from the main hose is connected to one of the water jet nozzles.

6. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The transmission mechanism includes a first support, a second support, a screw and a transmission motor. The first support is arranged at the lower part of the cutter disc housing, the second support is arranged at one end of the transmission chamber close to the crushing chamber, the two ends of the screw are rotatably installed in the first support and the second support respectively, and the transmission motor is arranged on the second support and is used to drive the screw to rotate.

7. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The crushing mechanism includes two crushing components, which are arranged in the crushing chamber from left to right in sequence, and the crushing components include a crushing motor, a rotating shaft and a plurality of crushing blades. The rotating shaft is vertically arranged in the crushing chamber, and the two ends of the rotating shaft are rotatably installed on the shell body respectively, and the plurality of crushing blades are arranged in sequence on the rotating shaft along the axial direction. The crushing motor is arranged on the shell body and connected to the upper end of the rotating shaft, and the plurality of crushing blades on the two rotating shafts are staggered.

8. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The transmission chamber includes a cylindrical chamber and a conical chamber arranged in sequence from front to back, the front end of the cylindrical chamber is connected to the outlet at the rear end of the cutter disc housing, the rear end of the conical chamber is connected to the crushing chamber, the cross-sectional area of ​​the conical chamber gradually increases from front to back, and the cross-sectional area of ​​the front end of the conical chamber is the same as the cross-sectional area of ​​the cylindrical chamber.

9. The coal reservoir physical fluidization mining integrated equipment according to claim 1, characterized in that: The moving mechanism comprises a moving crawler and a crawler motor. The moving crawler is arranged at the bottom of the shell, and the crawler motor is used to drive the moving crawler to move.

10. A method for using the coal reservoir physical fluidization mining integrated equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: construct a vertical shaft until it reaches below the coal seam to be mined, dig a storage tank at the bottom of the shaft, and set up a shaft hoisting system at the wellhead; Step 2: Use the shaft hoisting system to transport the coal reservoir physical fluidization mining integrated equipment to a predetermined position in the shaft, ensuring that the coal reservoir physical fluidization mining integrated equipment is close to the coal seam, so that the cutting disc of the coal reservoir physical fluidization mining integrated equipment faces the coal seam; Step 3: When the cutting disc of the coal reservoir physical fluidization mining integrated equipment contacts the coal seam, the cutting disc drive assembly is started to rotate the cutting disc and cut the coal seam along a certain upward coal mining route; At the same time, the water supply assembly, the transmission mechanism and the crushing mechanism are started synchronously; Step 4: The coal powder particles generated during the cutting process are transmitted to the pulverizing mechanism through the transmission mechanism, and the pulverizing mechanism further refines the coal powder; Step 5: The crushed coal powder is then discharged to the rear of the coal reservoir physical fluidization mining integrated equipment and falls into the roadway; the water jet generated at the front end of the coal reservoir physical fluidization mining integrated equipment forms a water flow in the roadway, so that the coal powder behind the coal reservoir physical fluidization mining integrated equipment is converted into a fluidized coal-water mixture. Under the inclination of the roadway, the coal-water mixture is driven by the water flow and continuously flows to the rear of the mining, and finally falls in the shaft; Step six: the coal-water mixture falls into the storage pool at the bottom of the wellbore through the wellbore, and is transported to the ground through a pumping system; subsequently, the coal, water and coalbed methane are separated and collected through a coal-water-gas three-phase separation device.

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