Sandstone uranium mine shaft bottom blasting charging and plugging integrated system

Abstract

The invention provides a sandstone uranium mine shaft bottom blasting charge and plugging integrated system. The sandstone uranium mine shaft bottom blasting charge and plugging integrated system comprises a hoisting unit, a plugging unit, a putting unit, an inflation unit and an explosion unit. The hoisting unit is provided with a lifting rope; the plugging unit is provided with a supporting part and an air bag, the air bag is communicated with the supporting part, and the supporting part is provided with a bottom inlet, a top inlet and an exhaust port; the throwing unit is provided with a throwing pipe, the top of the throwing pipe is connected with the lifting rope, and the bottom of the throwing pipe is connected with the top of the supporting part; the inflation unit is provided with an air guide pipe, and the air outlet end of the air guide pipe communicates with the top inlet. And the explosion unit is connected below the plugging unit. According to the sandstone uranium mine shaft bottom blasting charging and plugging integrated system provided by the invention, the supporting part is pre-inflated through the inflation unit, so that the air bag is pre-expanded, after the explosion unit explodes, blasting gas is upwards flushed into the air bag, the air bag is expanded to completely intercept the blasting gas, and leakage of the blasting gas is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of mine construction, and in particular relates to an integrated system for blasting charge and plugging at the bottom of a sandstone uranium mine. Background Art

[0002] Uranium is a rare radioactive metal that plays an important role in many fields. Natural uranium is an important fuel for nuclear power generation. Currently, the main method for collecting uranium is in situ leaching. The in situ leaching method is to inject chemical reactants into the ore belt through surface holes, selectively dissolve the useful component uranium in the ore through chemical reactions, and extract the leaching solution to the surface.

[0003] Drilling and blasting are required before injecting the reactants, and the uranium well outlet needs to be blocked before blasting to ensure that the blasting energy is mainly used to expand rock cracks after blasting, to prevent energy from wasting and overflowing from the wellbore, and to prevent the gas and debris generated by the blasting from causing harm to personnel and equipment. However, the existing plugging device is sealed by pouring, and it is disassembled after the blasting is completed. The plugging device cannot be reused, resulting in high plugging costs, and the injection and removal steps are time-consuming and complicated to operate, affecting the overall construction period. Explosives need to be placed before the plugging device is placed, but after the explosives are placed, mechanical equipment is prohibited from operating in the mine, which limits the installation of the plugging device and increases the difficulty of installation. Summary of the invention

[0004] The embodiment of the present invention provides an integrated system for blasting charge and plugging at the bottom of a sandstone uranium mine, aiming to solve the technical problem that the plugging device used for blasting in the prior art cannot be reused, resulting in high plugging cost and complicated operation.

[0005] To achieve the above object, the technical solution adopted by the present invention is: Provided is an integrated system for blasting, charging and plugging at the bottom of a sandstone uranium mine, comprising: A lifting unit having a lifting rope; A plugging unit extending into a mine shaft comprises a support portion and an air bag arranged on the outer periphery of the support portion, a vent hole communicating with the air bag is opened on the outer periphery of the support portion, the support portion has a bottom inlet, a top inlet and an exhaust port, and the air bag is inflated and expands radially along the mine shaft to seal the shaft wall; A delivery unit erected on the top of the mine, comprising a delivery pipe, the top of which is connected to the lifting rope, the inner cavity of which is connected to the top inlet, and the bottom of which is connected to the top of the support; an air-filling unit, comprising an air-conducting tube, the air-conducting tube extending into the delivery tube, and an air outlet end of the delivery tube being in communication with the top inlet; and An explosion unit is connected below the blocking unit and is used for blasting the bottom of the mine.

[0006] In a possible implementation, the lifting unit includes a lifting machine, a lifting end of the lifting machine is provided with the lifting rope, and the lifting machine can control the lifting and lowering of the lifting rope.

[0007] In a possible implementation, the blocking unit further includes: A support body, wherein a first air inlet passage is formed inside, a side wall of the support body is provided with the air vent, the air vent is communicated with the first air inlet passage, and a top of the support body is provided with an air inlet, the air inlet is communicated with the first air inlet passage, and the air inlet forms the top inlet; An air intake module is arranged at the bottom of the supporting body, a second air intake channel is arranged in the air intake module, the second air intake channel is communicated with the first air intake channel, the supporting body and the air intake module cooperate to form the supporting portion, and the second air intake channel forms the bottom inlet; A pressure-bearing sleeve, a sliding sleeve arranged on the outer periphery of the air intake module, and a pressure-bearing surface gradually inclined outward from top to bottom is provided at the bottom of the pressure-bearing sleeve; An outer shell is sleeved on the bottom of the supporting body and the outer periphery of the pressure-bearing sleeve; and The buffer member is arranged between the pressure sleeve and the supporting body and sleeved on the outer periphery of the air intake module. The buffer member is configured with a pre-tightening force for pushing the pressure sleeve to move downward.

[0008] In a possible implementation, a snap-in protrusion is provided on the top of the pressure sleeve, and a snap-in groove is correspondingly provided on the outer periphery of the air intake module. The snap-in groove is snap-fitted with the snap-in protrusion to limit the pressure sleeve from detaching downward from the air intake module.

[0009] In a possible implementation, a vent hole is further provided at the top of the support body, an vent valve is provided at the opening of the vent hole, and the vent hole forms the vent port; A pressure sensor is disposed on the pressure-bearing surface, and the pressure sensor is used to detect the pressure of the explosion gas. The pressure sensor is electrically connected to the exhaust valve.

[0010] In a possible implementation manner, a filter plate is provided at the bottom opening of the second air inlet channel.

[0011] In a possible implementation, the delivery tubes are provided in plurality, and the plurality of delivery tubes are connected in sequence from top to bottom, the delivery tube at the bottom is connected to the top of the support part, and the delivery tube at the top is connected to the bottom end of the lifting rope; the delivery unit further includes: A delivery rack is arranged at the entrance of the mine, a delivery opening is arranged in the middle of the delivery rack, and the delivery opening overlaps with the axis of the mine; and The locking assembly is arranged on the delivery rack, and the locking assembly has two clamping parts which are close to or far away from each other, and the two clamping parts are close to each other to clamp and fix the delivery tube.

[0012] In a possible implementation, the locking assembly includes: A first clamping arm is rotatably mounted on the delivery rack; and A second clamp arm, one end of which is rotatably disposed on the delivery rack and is hinged to the first clamp arm, the hinge axis of the first clamp arm and the second clamp arm is parallel to the vertical direction, and the other end of the second clamp arm forms the clamping portion with the first clamp arm; Wherein, when the first clamp arm and the second clamp arm approach each other and clamp the delivery tube, the axis of the clamping space formed between the first clamp arm and the second clamp arm overlaps with the axis of the delivery port.

[0013] In a possible implementation, the inflation unit further includes an air compressor, an air outlet end of the air compressor is connected to an air inlet end of the air duct, and the air duct is disposed inside the delivery tube.

[0014] In a possible implementation, a vertically penetrating lead wire channel is provided on the blocking unit, and a lead wire is arranged in the lead wire channel. The explosion unit includes: A lifting ring, arranged at the bottom of the blocking unit; A hook, connected to the lifting ring; an adjustable cord having a top end connected to the bottom of the hook; and A placing tube is connected to the bottom end of the rope, wherein explosives are placed in the placing tube, and the explosives are connected to the bottom end of the lead.

[0015] The integrated system for blasting and plugging at the bottom of a sandstone uranium mine provided by the present invention provides a plugging system compared with the prior art. The lifting unit lifts the delivery pipe, the bottom of the delivery pipe is connected to the plugging unit, the bottom of the plugging unit is connected to the explosion unit, the lifting unit puts the delivery pipe into the mine, so that the plugging unit and the explosion unit are sequentially located in the mine, the support part in the plugging unit is pre-inflated by the inflation unit, the airbag is pre-inflated and fits the sealing well wall, after the explosion unit explodes, the explosive gas rushes upward into the support part, and then rushes into the airbag, the airbag is inflated, and all the explosive gas is intercepted in the mine. The explosion gas leakage is avoided under and inside the airbag to protect the personal safety of workers; after the explosion gas is decompressed to a certain extent, the gas inside the airbag is discharged through the exhaust port, the airbag retracts, and the lifting unit lifts out the delivery pipe and the blocking unit. The blocking unit can be reused, which reduces the blocking cost. The whole blocking process does not have complicated operating steps, reduces the operating difficulty, and shortens the overall construction period; the explosion unit can be lowered as the blocking unit falls, and the blocking unit and the explosion unit are lowered at the same time through the lifting unit, which improves the construction efficiency and reduces the installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 or the description of the prior art 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 labor.

[0017] Figure 1 A schematic diagram of the main structure of a sandstone uranium mine bottom blasting charging and plugging integrated system provided by an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of the plugging unit used in; Figure 3 for Figure 2 An assembly cross-sectional view of the support body and the airbag used in the embodiment; Figure 4 for Figure 2 The assembly cross-sectional view of the housing and the pressure sleeve used in the embodiment; Figure 5 for Figure 2 A cross-sectional view of an exhaust valve used in; Figure 6 for Figure 1 A schematic diagram of the structure of the explosion unit used in; Figure 7 for Figure 1 A top view of the delivery rack used in the invention; Figure 8 for Figure 1Cross-sectional view of the delivery tube used in.

[0018] Description of reference numerals: 1. Lifting unit; 11. Lifting rope; 12. Lifting machine; 2. Blocking unit; 21. Air bag; 22. Support body; 221. First air inlet channel; 222. Air vent; 223. Air inlet; 224. Air exhaust; 225. Lead wire channel; 23. Air inlet module; 231. Second air inlet channel; 232. Snap-fit ​​groove; 24. Pressure-bearing sleeve; 241. Snap-fit ​​protrusion; 242. Pressure-bearing surface; 25. Shell; 26. Buffer; 27. Exhaust valve; 271. Valve body; 272. Movable plug; 273. Elastic member; 274. Exhaust channel; 28. Pressure sensor; 29. ​​Filter plate; 3. delivery unit; 31. delivery tube; 311. retaining ring; 312. pin hole; 32. delivery rack; 321. delivery port; 33. locking assembly; 331. first clamping arm; 332. second clamping arm; 4. Inflatable unit; 41. Air guide tube; 42. Air compressor; 5. Explosive unit; 51. Lifting ring; 52. Hook; 53. Rope; 54. Placement tube. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that the directions or positional relationships indicated by terms such as “length”, “width”, “height”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “head” and “tail” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the invention.

[0021] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0023] Please also read Figures 1 to 8 The sandstone uranium mine bottom blasting charging and plugging integrated system provided by the present invention is now described. The sandstone uranium mine bottom blasting charging and plugging integrated system comprises a lifting unit 1, a plugging unit 2 extending into the mine, a delivery unit 3 erected on the top of the mine, an inflation unit 4 and an explosion unit 5. The lifting unit 1 has a lifting rope 11; the blocking unit 2 has a supporting part and an airbag 21 arranged on the periphery of the supporting part, the periphery of the supporting part is provided with an air vent 222 connected to the airbag 21, the supporting part has a bottom inlet, a top inlet and an exhaust port, the airbag 21 is inflated and expands radially along the mine to seal the shaft wall; the delivery unit 3 has a delivery pipe 31, the top of the delivery pipe 31 is connected to the lifting rope 11, the bottom of the delivery pipe 31 is connected to the top of the supporting part, and the inner cavity of the delivery pipe 31 is connected to the top inlet; the inflation unit 4 has an air guide pipe 41, the air guide pipe 41 extends into the delivery pipe 31, and the air outlet end of the delivery pipe 31 is connected to the top inlet; the explosion unit 5 is connected below the blocking unit 2, and the explosion unit 5 is used to blast the bottom of the mine.

[0024] It should be noted that the top inlet of the support part is connected to the air guide pipe 41, and a one-way valve is provided in the top inlet; the exhaust port can be blocked. When the explosion unit 5 explodes, the exhaust port is in a blocked state, and all the explosion gas is intercepted at the bottom of the blocking unit 2, thereby improving the sealing of the explosion gas, meeting the demand for automatic blocking, and maximizing the effect of crack expansion by the explosion gas.

[0025] The sandstone uranium mine bottom blasting charging and plugging integrated system provided in this embodiment provides a plugging system compared with the prior art. The lifting unit 1 lifts the delivery pipe 31, the bottom of the delivery pipe 31 is connected to the plugging unit 2, and the bottom of the plugging unit 2 is connected to the explosion unit 5. The lifting unit 1 puts the delivery pipe 31 into the mine, so that the plugging unit 2 and the explosion unit 5 are sequentially located in the mine, and the support part in the plugging unit 2 is pre-inflated by the inflation unit 4 to pre-expand the airbag 21 to fit the sealing well wall. After the explosion unit 5 explodes, the explosive gas rushes upward into the support part and then into the airbag 21. The airbag 21 expands to completely release the explosive gas. The explosive gas is intercepted below and inside the airbag 21 to avoid leakage of the explosive gas and protect the personal safety of the workers; after the explosive gas is decompressed to a certain extent, the gas inside the airbag 21 is discharged through the exhaust port, the airbag 21 retracts, and the lifting unit 1 lifts the delivery pipe 31 and the blocking unit 2 upward. The blocking unit 2 can be reused, which reduces the blocking cost. The entire blocking process does not have complicated operating steps, reduces the operating difficulty, and shortens the overall construction period; the explosive unit 5 can be lowered as the blocking unit 2 falls, and the blocking unit 2 and the explosive unit 5 are lowered at the same time by the lifting unit 1, which improves the construction efficiency and reduces the installation difficulty.

[0026] In some embodiments, see Figure 1 The hoisting unit 1 includes a hoist 12, and a hoisting rope 11 is provided at the hoisting end of the hoist 12. The hoist 12 can control the lifting and lowering of the hoisting rope 11. The hoist 12 can control the lifting and lowering of the hoisting rope 11 to put the delivery pipe 31 into or out of the mine, thereby realizing the automatic lifting and lowering of the plugging unit 2.

[0027] In some embodiments, see Figures 2 to 4 The blocking unit 2 further includes a supporting body 22, an air intake module 23, a pressure sleeve 24, a housing 25 and a buffer 26. A first air intake channel 221 is formed inside the supporting body 22, a vent hole 222 is provided on the side wall of the supporting body 22, and the vent hole 222 is communicated with the first air intake channel 221, an air intake hole 223 is provided on the top of the supporting body 22, and the air intake hole 223 is communicated with the first air intake channel 221, and the air intake hole 223 forms a top inlet; the air intake module 23 is provided at the bottom of the supporting body 22, and a second air intake channel 231 is provided inside the air intake module 23, and the second air intake channel 231 is communicated with the first air intake channel 221, The support body 22 and the air intake module 23 cooperate to form a support portion, and the second air intake channel 231 forms a bottom inlet; the pressure-bearing sleeve 24 is slidably mounted on the outer periphery of the air intake module 23, and the bottom of the pressure-bearing sleeve 24 is provided with a pressure-bearing surface which gradually tilts outward from top to bottom; the outer shell 25 is mounted on the bottom of the support body 22 and the outer periphery of the pressure-bearing sleeve 24; the buffer 26 is provided between the pressure-bearing sleeve 24 and the support body 22, and is mounted on the outer periphery of the air intake module 23, and the buffer 26 is configured with a preload force to push the pressure-bearing sleeve 24 to move downward.

[0028] It should be noted that a one-way valve is provided in the air inlet 223 to prevent the gas from moving upward. The air inlet 223 is connected to the air guide pipe 41, and the one-way valve ensures the one-way flow of the gas.

[0029] The plugging unit 2 provided in this embodiment has a good air intake path. The explosion gas enters the first air intake channel 221 upward from the second air intake channel 231, and enters the air bag 21 along the vent hole 222. The one-way valve arranged in the air intake hole 223 prevents the explosion gas from being discharged along the air intake hole 223. The explosion gas is sealed in the mine, so that the explosion gas completely acts on the surrounding rocks. The pressure sleeve 24 is slidably sleeved on the outer periphery of the air intake module 23. When the explosion gas rises, the pressure surface of the pressure sleeve 24 is impacted first, and the pressure is dispersed for the second air intake channel 231, reducing the damage of the explosion gas to the second air intake channel 231 and the first air intake channel 221. When the pressure sleeve 24 moves upward, it squeezes the buffer 26, and the buffer 26 applies thrust in the reverse direction, reducing the impact of the explosion gas on the plugging unit 2, and reducing the rigid damage between the air intake module 23 and the support body 22. The outer shell 25 wraps the buffer 26 and the pressure sleeve 24, which is convenient for transportation and use, and reduces the damage during movement.

[0030] In a specific implementation, the buffer member 26 is a spring, which has high strength and good continuous deformation properties and meets the use requirements.

[0031] During specific implementation, a plastic tube may be provided at the vent hole 222 to guide the gas flow.

[0032] In some embodiments, a one-way valve is provided between the second air inlet channel 231 and the first air inlet channel 221 to guide the explosion gas to move in one direction. The one-way valve is a spherical one-way valve with a funnel-shaped container channel. A sealing ball is provided in the funnel. The explosion gas pushes the sealing ball upward, and a gap is generated between the sealing ball and the container channel, and the explosion gas rises from the gap.

[0033] In some embodiments, a sealing ring is provided between the support body 22 and the housing 25 to increase the sealing of the connection.

[0034] In some embodiments, see Figure 4 The top of the pressure-bearing sleeve 24 is provided with a snap-fitting protrusion 241, and the outer periphery of the air intake module 23 is correspondingly provided with a snap-fitting groove 232, which is snap-fitted with the snap-fitting protrusion 241 to limit the pressure-bearing sleeve 24 from being separated downward from the air intake module 23. After the snap-fitting protrusion 241 and the snap-fitting groove 232 are snap-fitted, the pressure-bearing sleeve 24 is restricted to the outer periphery of the air intake module 23, preventing the pressure-bearing sleeve 24 from being separated downward from the air intake module 23, ensuring that the pressure-bearing sleeve 24 can move in the up-down direction, and preventing deviation of the pressure-bearing sleeve 24 from moving.

[0035] In some embodiments, see Figure 2 The top of the support body 22 is also provided with an exhaust hole 224, and an exhaust valve 27 is provided at the opening of the exhaust hole 224, and the exhaust hole 224 forms an exhaust port; a pressure sensor 28 is provided on the pressure-bearing surface, and the pressure sensor 28 is used to detect the pressure of the explosive gas, and the pressure sensor 28 is electrically connected to the exhaust valve 27. The exhaust hole 224 is used to discharge the explosive gas in the airbag 21 and the first channel 221, so as to facilitate the separation of the airbag 21 from the well wall and realize the overall recovery of the plugging unit 2 for the next use.

[0036] For specific implementation, see Figure 5 The exhaust valve 27 is a one-way valve. The exhaust valve 27 includes a valve body 271, a movable plug 272 and an elastic member 273. The bottom of the valve body 271 is open, and an exhaust passage 274 is provided on the side wall of the valve body 271. The elastic member 273 is arranged between the valve body 271 and the movable plug 272. The movable plug 272 is slidably arranged on the inner wall of the valve body 271 along the vertical direction. In the blocked state, the movable plug 272 blocks the exhaust passage 274. When the exhaust operation is performed, the movable plug 272 is controlled to move upward so that the exhaust passage 274 inside the valve body 271 is connected to the outside. When the explosive gas is discharged, the internal air pressure of the valve body 271 is the same as the external air pressure, and the elastic member 273 is reset to drive the movable plug 272 to block the exhaust passage 274 again, so that the exhaust hole 224 is in the blocked state again.

[0037] In some embodiments, see Figure 2 and Figure 4 A filter plate 29 is provided at the bottom opening of the second air inlet channel 231. The filter plate 29 can prevent the debris generated by the explosion from entering the second air inlet channel 231, ensuring that the gas entering the airbag 21 will not contain substances that cut the airbag 21 after being filtered, thereby improving the protection effect of the airbag 21.

[0038] In a specific implementation, the filter plate 29 is a high temperature and high pressure resistant filter screen, allowing gas to pass through.

[0039] In some embodiments, see Figure 7 and Figure 8 , a plurality of delivery tubes 31 are provided, and the plurality of delivery tubes 31 are connected in sequence from top to bottom, the delivery tube 31 at the bottom is connected to the top of the support part, and the delivery tube 31 at the top is connected to the bottom end of the lifting rope 11; the delivery unit 3 also includes a delivery frame 32 and a locking assembly 33. The delivery frame 32 is provided at the wellhead of the mine, and a delivery port 321 is provided in the middle of the delivery frame 32, and the delivery port 321 overlaps with the axis of the mine; the locking assembly 33 is provided on the delivery frame 32, and the locking assembly 33 has two clamping parts that are close to or far from each other, and the two clamping parts are close to each other to clamp and fix the delivery tube 31.

[0040] During the specific implementation, the lifting rope 11 is connected to the latest delivery pipe 31 and hoisted above the fixed delivery pipe 31 to facilitate the connection between the upper and lower delivery pipes 31; in the lifting stage, after the lifting rope 11 lifts the top delivery pipe 31 away, the lifting rope 11 returns and reconnects with the delivery pipe 31 at the top, so that the delivery pipe 31 is gradually lifted out of the mine as a whole.

[0041] The delivery unit 3 provided in this embodiment has a simple structure without complicated structures. The delivery pipe 31 is inserted into the delivery port 321 and fixed by the locking assembly 33. The crane 12 lifts another delivery pipe 31 and lifts this delivery pipe 31 above the fixed delivery pipe 31. The two delivery pipes 31 are manually docked up and down, and then the locking assembly 33 is released. The delivery pipe 31 below the crane 12 is used to dock multiple delivery pipes 31 in sequence, so that multiple delivery pipes 31 are connected together. At the same time, the blocking unit 2 is lowered by the delivery pipe 31. There are no complicated steps. The delivery pipe 31 can provide stable support above the blocking unit 2, and cooperate with the airbag 21 to fix the blocking unit 2 at a preset position in the mine to prevent the explosive gas from rising against the airbag 21.

[0042] As an embodiment of the connection of the delivery tube 31, an external thread is set at the top end of the delivery tube 31, and an internal thread is set at the bottom end, and adjacent delivery tubes 31 are screwed together.

[0043] As another embodiment of the interconnection of the delivery tubes 31, a retaining ring 311 is sleeved on the outer periphery of the top end of the delivery tube 31, and a through pin hole 312 is opened on the outer periphery of the bottom end of the delivery tube 31. The inner diameter of the top end of the delivery tube 31 is larger than the outer diameter of the bottom end thereof, and the outer periphery of the delivery tube 31 is correspondingly provided with pin holes 312. When the upper and lower delivery tubes 31 are connected to each other, a locking pin is passed through the two pin holes 312 at the same time to fix the two delivery tubes 31 together.

[0044] In some embodiments, a protective shell is further provided on the outer periphery of the delivery tube 31 to protect the delivery tube 31 .

[0045] In some embodiments, see Figure 7 The multiple locking components 33 include a first clamp arm 331 and a second clamp arm 332. The first clamp arm 331 is fixed on the delivery rack 32; one end of the second clamp arm 332 is fixed on the delivery rack 32 and is hinged to the first clamp arm 331, the hinge axis of the first clamp arm 331 and the second clamp arm 332 is parallel to the vertical direction, and the other end of the second clamp arm 332 forms a clamping portion with the first clamp arm 331; wherein, when the first clamp arm 331 and the second clamp arm 332 are close to each other and clamp the delivery tube 31, the axis of the clamping space formed between the first clamp arm 331 and the second clamp arm 332 overlaps with the axis of the delivery port 321.

[0046] It should be noted that when the first clamp arm 331 and the second clamp arm 332 clamp the outer periphery of the delivery tube 31 , the upper surfaces of the first clamp arm 331 and the second clamp arm 332 abut against the retaining ring 311 up and down to increase the fixing effect on the delivery tube 31 .

[0047] It should be noted that after the first clamp arm 331 and the second clamp arm 332 are close to each other, a fixing sleeve may be used to cover the first clamp arm 331 and the second clamp arm 332 at the same time to fix the first clamp arm 331 and the second clamp arm 332.

[0048] In specific implementation, the first clamp arm 331 or the second clamp arm 332 can be manually rotated, or a driving member can be provided on the delivery rack 32, two driving members are provided, and are respectively connected to the first clamp arm 331 and the second clamp arm 332, and the two driving members respectively drive the first clamp arm 331 and the second clamp arm 332 to move closer to or away from each other. The driving member can be an electric push rod or a telescopic cylinder.

[0049] The locking assembly 33 provided in this embodiment has a simple structure. By controlling the second clamping arm 332 to move away from or close to the first clamping arm 331, the delivery tube 31 can be clamped and fixed or avoided. The operation is simple and convenient, and the delivery tube 31 located at the top of the delivery tube 31 can be fixed when the delivery tube 31 is connected or disassembled, thereby ensuring stable assembly and disassembly work.

[0050] In some embodiments, see Figure 1 The inflation unit 4 further includes an air compressor 42, the air outlet of the air compressor 42 is connected to the air inlet of the air guide tube 41, and the air guide tube 41 is arranged inside the delivery tube 31. The air compressor 42 can ventilate the first air inlet channel 221 through the air guide tube 41, thereby pre-inflating the airbag 21, ensuring that the airbag 21 can be inflated in a preset direction when subjected to explosive gas.

[0051] During specific implementation, since there are multiple delivery tubes 31, there are also multiple air guide tubes 41, and adjacent air guide tubes 41 are connected. Before installing the delivery tube 31, the air guide tube 41 is inserted into the delivery tube 31, and after connecting the adjacent air guide tubes 41, the adjacent delivery tubes 31 are connected. As the number of delivery tubes 31 increases, the number of air guide tubes 41 increases accordingly to ensure that the air guide tube 41 can be connected to the blocking unit 2 located deep inside.

[0052] In some embodiments, see Figure 2 and Figure 6The plugging unit 2 is provided with a vertically penetrating lead channel 225, and the lead is arranged in the lead channel 225. The explosive unit 5 includes a lifting ring 51, a hook 52, an adjustable rope 53 and a placement tube 54. The lifting ring 51 is arranged at the bottom of the plugging unit 2; the hook 52 is hung with the lifting ring 51; the top of the adjustable rope 53 is connected to the bottom of the hook 52; the placement tube 54 is connected to the bottom end of the rope 53, and explosives are placed in the placement tube 54, and the explosives are connected to the bottom end of the lead. The placement tube 54 is hung on the lifting ring 51 through the hook 52, so that the placement tube 54 can be raised and lowered with the lifting and lowering of the plugging unit 2. The length of the rope 53 is adjustable, which is convenient for adjusting the vertical distance between the placement tube 54 and the plugging unit 2, so as to avoid damaging the plugging unit 2 when the explosive in the placement tube 54 explodes. The staff can ignite the fuse so that the fuse goes along the lead channel 225 to the placement tube 54 to detonate the explosive.

[0053] During specific implementation, after the length of the rope is determined, the rope is manually knotted to fix the length of the rope.

[0054] It should be noted that the conventional construction method is to place the explosives into the bottom of the well first and then place the plugging device. Due to safety requirements, the plugging device cannot be installed by mechanical operation, and the operation is difficult. The present application fixes the explosives in the placement tube 54, and the explosives and the plugging unit 2 are placed at the same time, which speeds up the construction efficiency and solves the problem of placing the explosives first and then installing the plugging unit 2. During specific implementation, the placement tube 54 is a non-fully enclosed container, and the explosive is fixed by discontinuous thin columns.

[0055] The use process of the present invention is: The explosive is fixed in the placement tube 54, and the hoist 12 controls the placement tube 54 and the plugging unit 2 to be placed downward from the wellbore in sequence. Through the air inlet 223 on the support body 22, 0.4MPa of gas is pumped into the air compressor 42 to pre-tighten the airbag 21. After the explosion is achieved by igniting the fuse, a large amount of stress waves and a large amount of explosive gas are generated. The explosive gas passes through the filter plate 29 at the bottom. Under the filtration of the filter plate 29, only the impact gas enters the first air inlet channel 221 through the one-way valve, and then passes through the vent hole 2 22 enters the airbag 21, causing the airbag 21 to expand for the second time to form a plugging effect, thereby improving the sealing of the gas during blasting, avoiding the dissipation of blasting energy, and improving the effect of the blasting gas generated by the blasting on the expansion of the blasting cracks on the surrounding rocks. After a period of time after the blasting is completed, the pressure displayed by the data fed back by the pressure sensor 28 is less than the optimal set value, and the pressure sensor 28 opens the exhaust valve 27 through the wire control, the gas in the plugging airbag 21 is discharged, the plugging unit 2 is unlocked, and the plugging unit 2 returns to the state before the blasting. After the blasting is completed, the delivery pipe 31 and the plugging unit 2 are lifted out of the wellhead by the crane 12. The plugging unit 2 can be reused.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated system for blasting and plugging at the bottom of a sandstone uranium mine, characterized in that: include: A lifting unit having a lifting rope; A plugging unit extending into a mine shaft comprises a support portion and an air bag arranged on the outer periphery of the support portion, a vent hole communicating with the air bag is opened on the outer periphery of the support portion, the support portion has a bottom inlet, a top inlet and an exhaust port, and the air bag is inflated and expands radially along the mine shaft to seal the shaft wall; A delivery unit erected on the top of the mine, comprising a delivery pipe, the top of which is connected to the lifting rope, the bottom of which is connected to the top of the support, and the inner cavity of which is connected to the top inlet; An air-filling unit having an air-guiding pipe, the air-guiding pipe extends into the delivery pipe, and an air outlet end of the delivery pipe is connected to the top inlet; as well as An explosion unit is connected below the blocking unit and is used for blasting the bottom of the mine.

2. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 1, characterized in that: The hoisting unit comprises a hoisting machine, a hoisting end of the hoisting machine is provided with the hoisting rope, and the hoisting machine can control the lifting and lowering of the hoisting rope.

3. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 1, characterized in that: The blocking unit further comprises: A support body, wherein a first air inlet passage is formed inside, a side wall of the support body is provided with the air vent, the air vent is communicated with the first air inlet passage, and a top of the support body is provided with an air inlet, the air inlet is communicated with the first air inlet passage, and the air inlet forms the top inlet; An air intake module is arranged at the bottom of the supporting body, a second air intake channel is arranged in the air intake module, the second air intake channel is communicated with the first air intake channel, the supporting body and the air intake module cooperate to form the supporting portion, and the second air intake channel forms the bottom inlet; A pressure-bearing sleeve, a sliding sleeve arranged on the outer periphery of the air intake module, and a pressure-bearing surface gradually inclined outward from top to bottom is provided at the bottom of the pressure-bearing sleeve; An outer shell is sleeved on the bottom of the supporting body and the outer periphery of the pressure-bearing sleeve; and The buffer member is arranged between the pressure sleeve and the supporting body and sleeved on the outer periphery of the air intake module. The buffer member is configured with a pre-tightening force for pushing the pressure sleeve to move downward.

4. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 3, characterized in that: A clamping protrusion is provided on the top of the pressure-bearing sleeve, and a clamping groove is correspondingly provided on the outer periphery of the air intake module. The clamping groove is clamped and matched with the clamping protrusion to limit the pressure-bearing sleeve from detaching downward from the air intake module.

5. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 3, characterized in that: The top of the supporting body is also provided with an exhaust hole, an exhaust valve is provided at the opening of the exhaust hole, and the exhaust hole forms the exhaust port; A pressure sensor is disposed on the pressure-bearing surface, and the pressure sensor is used to detect the pressure of the explosion gas. The pressure sensor is electrically connected to the exhaust valve.

6. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 3, characterized in that: A filter plate is provided at the bottom opening of the second air inlet channel.

7. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 1, characterized in that: The delivery tubes are provided in plurality, and the plurality of delivery tubes are connected in sequence from top to bottom, the delivery tube at the bottom is connected to the top of the support part, and the delivery tube at the top is connected to the bottom end of the lifting rope; the delivery unit further includes: A delivery rack is arranged at the entrance of the mine, a delivery opening is arranged in the middle of the delivery rack, and the delivery opening overlaps with the axis of the mine; and The locking assembly is arranged on the delivery rack, and the locking assembly has two clamping parts which are close to or far away from each other, and the two clamping parts are close to each other to clamp and fix the delivery tube.

8. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 7, characterized in that: The locking assembly comprises: A first clamping arm is rotatably mounted on the delivery rack; and A second clamp arm, one end of which is rotatably disposed on the delivery rack and is hinged to the first clamp arm, the hinge axis of the first clamp arm and the second clamp arm is parallel to the vertical direction, and the other end of the second clamp arm forms the clamping portion with the first clamp arm; When the first clamp arm and the second clamp arm approach each other and clamp the delivery tube, the axis of the clamping space formed between the first clamp arm and the second clamp arm overlaps with the axis of the delivery port.

9. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine as claimed in claim 1, characterized in that: The inflation unit also includes an air compressor, the air outlet end of the air compressor is connected to the air inlet end of the air guide tube, and the air guide tube is penetrated inside the delivery tube.

10. The integrated system for blasting and plugging at the bottom of a sandstone uranium mine according to claim 1, characterized in that: The blocking unit is provided with a vertically penetrating lead wire channel, in which the lead wire is arranged. The explosion unit comprises: A lifting ring, arranged at the bottom of the blocking unit; A hook, connected to the lifting ring; an adjustable cord having a top end connected to the bottom of the hook; and A placing tube is connected to the bottom end of the rope, wherein explosives are placed in the placing tube, and the explosives are connected to the bottom end of the lead.

Images