In-situ solidification hole protection device and method for breaking rock mass

Abstract

The application provides a broken rock mass in-situ curing hole protection device and a curing hole protection method, and belongs to the technical field of mining engineering. The broken rock mass in-situ curing hole protection device comprises an inflation mechanism, a gas blowing pipe mechanism and a wall protection pipe. The wall protection pipe can be changed from a soft state to a hard state at room temperature. When in the soft state, the wall protection pipe can be wound and stored through a winding assembly, and after being driven by inflation, the wall protection pipe is smoothly everted along the pipe end head, extends into the drill hole and is self-adaptive to irregular forms of the hole wall, thereby solving the poor adhesion problem of the traditional rigid cylindrical wall protection. After being in the hard state, a rigid support structure is formed, which directly resists the stress around the hole and the risk of hole collapse. Meanwhile, steel materials are not needed, the defects of high cost and loss of blasting energy of the cylindrical wall protection are avoided, and the material does not need to be solidified for a long time like grouting reinforcement. Through inflation pipe blowing, the process is simplified, the operation efficiency is greatly improved, the material cost is lower, and the broken rock mass drilling hole short-term stability requirement of the mine is perfectly adapted.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mining engineering, and particularly relates to a broken rock mass in-situ solidification hole protection device and a solidification hole protection method. BACKGROUND

[0002] In the mine drilling and blasting engineering, the broken ore body is usually cut by geological structures such as joints, fissures and faults, forming a loose or weakly cemented block structure, and the rock mass has poor integrity and low self-bearing capacity. After the drilling, the original stress balance is broken, the stress around the hole is concentrated, and the rock mass is pulled or sheared when the stress exceeds the tensile or shear strength, causing the hole to collapse. In addition, due to the time sequence of drilling and charging processes, the drilling in the broken ore body is disturbed by ground pressure or blasting impact, causing the hole to collapse and affecting the subsequent charging and blasting processes, thereby reducing the mining efficiency and ore recovery rate of the mine.

[0003] At present, the existing protection methods for the drilling in the broken rock mass include a cylindrical wall protection device and a grouting reinforced drilling. The cylindrical wall protection device is a prefabricated cylindrical wall part (such as a steel cylinder or a composite material cylinder) nested in the drilled blast hole, and an interference fit is formed between the fixed part and the blocking part to directly support the hole wall. However, the steel pipe will waste blasting energy, resulting in poor blasting effect, high cost and low work efficiency. The grouting reinforced drilling refers to injecting concrete or polyurethane and other materials into the broken rock mass to fill the fissures and cement the loose rock mass, thereby improving the bearing capacity of the rock mass, and then drilling in the filled body. This method can significantly enhance the stability of the blast hole, but the setting time of the concrete or other cementing materials is too long, the investment cost is high, and the process is complex, which is not suitable for short-term stability operation of the blast hole.

[0004] According to the above problems, there is an urgent need to develop an underground operation device and method with low cost, high efficiency and good hole protection effect. SUMMARY

[0005] The application embodiment provides a broken rock mass in-situ solidification hole protection device and a solidification hole protection method. The broken rock mass in-situ solidification hole protection device realizes efficient hole protection by the wall protection pipe which can be changed from soft to hard at room temperature, cooperates with the air inflation pipe releasing mechanism, and avoids the waste of blasting energy, improves the hole protection effect, and improves the mining efficiency and ore recovery rate of the mine. The problems of the existing cylindrical wall protection device, such as waste of blasting energy, high cost, slow setting of grouting reinforcement, and complex process, are solved.

[0006] In a first aspect, the application embodiment provides a broken rock mass in-situ solidification hole protection device, which comprises an inflation mechanism, an air inflation pipe releasing mechanism and a wall protection pipe.

[0007] One end of the wall protection pipe is a closed end, and the other end is an open end; the wall protection pipe can be changed from soft to hard at room temperature;

[0008] The air inflation pipe releasing mechanism comprises an air storage bin, a winding assembly and a pipe releasing end;

[0009] The winding assembly is arranged in the air storage bin and is used for winding the protective wall pipe.

[0010] In a feasible implementation, the in-situ solidification hole protection device for broken rock mass further comprises a lifting adjusting assembly, which comprises a base, a folding support, an extension mechanism and a bearing platform.

[0011] The folding support is arranged on the base, the bearing platform is arranged at the top end of the folding support, and the air inflation pipe releasing mechanism is arranged on the bearing platform.

[0012] The extension mechanism is hingedly connected to the base and the folding support at two ends, respectively, and is used for driving the folding support to expand or contract, so that the bearing platform and the air inflation pipe releasing mechanism are lifted or lowered.

[0013] In a feasible implementation, the air storage bin is a hollow cylindrical cavity structure, the pipe releasing end is connected to the circumferential cylindrical surface of the air storage bin, and the circumferential cylindrical surface of the air storage bin is provided with a clamping tooth.

[0014] The in-situ solidification hole protection device for broken rock mass further comprises an inclination adjusting assembly, which comprises a gear and a motor.

[0015] The motor is arranged on the bearing platform, the gear is arranged at the output end of the motor, and the two gears are located on the two sides of the air storage bin, respectively.

[0016] The motor is used for driving the gear and the air storage bin to rotate, thereby adjusting the inclination angle of the pipe releasing end.

[0017] In a feasible implementation, the in-situ solidification hole protection device for broken rock mass further comprises a hole nozzle and an exhaust pipe.

[0018] One end of the hole nozzle is insertable into a drill hole, the other end is opposite to the pipe releasing end, and the protective wall pipe penetrates through the hole nozzle.

[0019] The end of the exhaust pipe is insertable into the drill hole through the hole nozzle, and the exhaust pipe is used for exhausting air in the drill hole when the protective wall pipe enters the drill hole.

[0020] In an implementation, the device further comprises a fixing member detachably arranged on the pipe end head.

[0021] The fixing member is used to detachably fix the pipe on the pipe end head.

[0022] In an implementation, the winding assembly comprises a winding disc and a crank handle.

[0023] The winding disc is arranged in the gas storage chamber and is rotatably connected to the gas storage chamber.

[0024] The crank handle is detachably connected to the winding disc and is used to rotate the winding disc to wind the pipe.

[0025] In an implementation, the gas storage chamber is provided with a viewing window.

[0026] The pipe enters the gas storage chamber through the viewing window.

[0027] In an implementation, the pipe comprises an outer membrane, an inner membrane and a fiber layer between the outer membrane and the inner membrane.

[0028] The inner wall of the inner membrane is coated with a curing liquid which can change from a soft state to a hard state at room temperature.

[0029] In an implementation, the inflation mechanism comprises a gas pump and a gas injection pipe.

[0030] One end of the gas injection pipe is connected to the exhaust end of the gas pump and the other end is connected to the gas inlet end of the gas storage chamber.

[0031] The embodiment of the application provides a broken rock in-situ solidification hole protection device, which comprises an inflation mechanism, a gas blowing pipe mechanism and a wall protection pipe, the gas blowing pipe mechanism comprises a gas storage bin, a winding assembly and a pipe end head, the closed end of the wall protection pipe is wound on the winding assembly, the open end of the wall protection pipe passes through the pipe end head and is outwardly set on the outer wall of the pipe end head, the inflation mechanism is used for inflating the gas storage bin, high-pressure air pushes the wall protection pipe to stretch out of the gas storage bin and the pipe end head and turn outward, the outwardly turned wall protection pipe stretches into the drill hole and adheres to the inner wall of the drill hole after expansion, the wall protection pipe in the drill hole changes from a soft state to a hard state in a normal temperature environment, the wall protection pipe in the hard state forms a rigid support structure, directly resists the stress around the hole and the hole collapse risk, effectively solves the problems of hole collapse affecting subsequent charging blasting, reduces mining efficiency and ore recovery rate, avoids the core defects of the existing hole protection methods, and realizes the synergistic improvement of hole protection effect, operation efficiency and economy.

[0032] In the second aspect, the embodiment of the application further provides a solidification hole protection method, which is applied to the broken rock in-situ solidification hole protection device, and the method comprises the following steps.

[0033] Aligning the pipe end head with the drill hole in parallel;

[0034] Winding the closed end of the wall protection pipe in the soft state on the winding assembly, passing the open end through the pipe end head, and setting the open end on the end of the pipe end head after turning;

[0035] Inflating the gas storage bin by using the inflation mechanism, making the wall protection pipe turn outward, and sequentially stretching out of the gas storage bin and the pipe end head to stretch into the drill hole;

[0036] When the wall protection pipe changes from the soft state to the hard state in the normal temperature environment, cutting the part of the wall protection pipe outside the drill hole, and completing the support of the drill hole. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structure schematic diagram of a broken rock in-situ solidification hole protection device provided by the application;

[0038] Figure 2 is a schematic diagram of a wall protection pipe in a fixed state;

[0039] Figure 3 is a schematic diagram of a wall protection pipe stretching out of a pipe end head;

[0040] Figure 4 is a schematic diagram of a broken rock in-situ solidification hole protection device in a use state;

[0041] Figure 5 is a sectional view of a wall protection pipe;

[0042] Figure 6is a schematic view of the inclination adjusting assembly and the connecting structure thereof.

[0043] Figure 7 is a flow chart of a solidification hole protection method provided by the present application.

[0044] Legend:

[0045] 100 - air blowing pipe releasing mechanism; 200 - wall protection pipe; 300 - lifting adjusting assembly; 400 - inclination adjusting assembly; 500 - orifice nozzle; 600 - exhaust pipe; 700 - fixing member; 800 - air pump; 900 - air injection pipe;

[0046] 110 - air storage chamber; 120 - winding assembly; 130 - pipe releasing end; 210 - outer membrane; 220 - inner membrane; 230 - fiber layer; 240 - solidification liquid; 310 - base; 320 - folding support; 330 - telescopic mechanism; 340 - bearing platform; 410 - gear; 420 - motor;

[0047] 111 - clamping tooth; 112 - viewing window; 121 - winding disc; 122 - crank handle. DETAILED DESCRIPTION

[0048] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0049] At present, due to the joints, fissures and other structures of the broken rock mass in the mine, the broken rock mass has poor integrity and low bearing capacity, and after drilling, the ground stress is unbalanced and the hole is easy to collapse; and there is a time difference between drilling and charging, and the hole will collapse under the impact of ground pressure or blasting, affecting the process. The existing cylindrical wall protection consumes blasting energy, has high cost, and the grouting reinforcement solidifies slowly and the process is complex, so a low-cost and efficient hole protection scheme is needed.

[0050] The broken rock mass in-situ solidification hole protection device and the solidification hole protection method provided by the present application can realize efficient hole protection by the wall protection pipe which can change from soft to hard at room temperature and cooperate with the air blowing pipe releasing mechanism, without the need for complex processes; the height and inclination can be adjusted to adapt to different drilling; the cost is low, the operation is simple, the blasting energy loss is avoided, and the hole protection effect, mining efficiency and ore recovery rate are improved.

[0051] The specific structure of the broken rock mass in-situ solidification hole protection device and the solidification hole protection method provided by the present application will be described in detail below in conjunction with the drawings.

[0052] Referring toFigures 1-6 as shown, Figure 3 The arrow A represents the direction of air movement, and the embodiment of the application provides a broken rock in-situ curing hole protection device, which comprises an inflation mechanism, a gas blowing pipe mechanism 100 and a wall protection pipe 200.

[0053] One end of the wall protection pipe 200 is a closed end, and the other end is an open end; the wall protection pipe 200 can change from a soft state to a hard state in a normal temperature environment, and the soft state is convenient for winding and extending into the borehole, and the wall protection pipe 200 in the hard state can realize stable support of the borehole.

[0054] The gas blowing pipe mechanism 100 comprises a gas storage warehouse 110, a winding assembly 120 and a pipe discharging end 130; the winding assembly 120 is arranged in the gas storage warehouse 110, and the winding assembly 120 is used for winding the closed end of the wall protection pipe 200, facilitating storage and subsequent discharge of the wall protection pipe 200; the pipe discharging end 130 is in communication with the gas storage warehouse 110, the open end of the wall protection pipe 200 passes through the pipe discharging end 130 and is externally set on the outer wall of the pipe discharging end 130, the pipe discharging end 130 provides guidance for the extension of the wall protection pipe 200, and the open end of the wall protection pipe 200 is in sealing connection with the pipe discharging end 130, so that the gas storage warehouse 110, the pipe discharging end 130 and the wall protection pipe 200 form a closed space.

[0055] The inflation mechanism is in communication with the gas storage warehouse 110, and the inflation mechanism is used for inflating the gas storage warehouse 110, that is, inflating the gas storage warehouse 110 to increase the air pressure in the gas storage warehouse 110, and the air pushes the wall protection pipe 200 to extend out of the gas storage warehouse 110 and the pipe discharging end 130 under the action of the air pressure in the gas storage warehouse 110, and the wall protection pipe 200 extends into the borehole, and the wall protection pipe 200 adheres to the inner wall of the borehole after expansion.

[0056] Since the open end of the wall protection pipe 200 is externally set on the outer wall of the pipe discharging end 130, the wall protection pipe 200 is externally set after extending out of the pipe discharging end 130, that is, the wall protection pipe 200 extends into the borehole in the process of external setting, thereby reducing the friction between the wall protection pipe 200 and the inner wall of the borehole.

[0057] When the wall protection pipe 200 extends to the inner end of the borehole and abuts against the inner wall of the inner end of the borehole, the wall protection pipe 200 no longer moves, the volume of the closed space formed by the gas storage warehouse 110 and the wall protection pipe 200 no longer changes, the air pressure in the gas storage warehouse 110 (closed space) gradually increases, and when the air pressure reaches a preset pressure, the inflation mechanism is closed and the inflation into the gas storage warehouse 110 is stopped.

[0058] After a period of time, the wall protection pipe 200 changes from a soft state to a hard state in a normal temperature environment, forming a rigid support structure, which can support the borehole and resist the risk of hole collapse.

[0059] The application provides a broken rock mass in-situ solidification hole protection device, which realizes efficient hole protection through a normal-temperature soft-hard convertible wall protection pipe 200, cooperates with a gas blowing pipe mechanism and an inflation mechanism, is low in cost, simple in operation, avoids blasting energy loss, improves hole protection effect and mine exploitation efficiency and ore recovery rate, solves the problems of high cost of the existing cylindrical wall protection, blasting energy loss and low grouting reinforcement efficiency, reduces hole protection cost and improves operation efficiency.

[0060] Referring to Figure 1 In some embodiments, the broken rock mass in-situ solidification hole protection device further comprises a lifting adjustment assembly 300, and the lifting adjustment assembly 300 comprises a base 310, a folding support 320, a telescopic mechanism 330 and a bearing platform 340.

[0061] The base 310 provides stable support for the entire lifting adjustment assembly 300.

[0062] The folding support 320 can be an X-shaped support or a Z-shaped support, the folding support 320 is arranged on the base 310, the bearing platform 340 is arranged at the top end of the folding support 320, and the gas blowing pipe mechanism 100 is arranged on the bearing platform 340. The bearing platform 340 provides an installation carrier for the gas blowing pipe mechanism 100, so that the gas blowing pipe mechanism 100 can move synchronously with the bearing platform 340.

[0063] The telescopic mechanism 330 is hingedly connected to the base 310 and the folding support 320 at both ends, and is used to drive the folding support 320 to expand or contract. When the folding support 320 expands, the bearing platform 340 is lifted, and when the folding support 320 contracts, the bearing platform 340 is lowered, thereby synchronously lifting or lowering the gas blowing pipe mechanism 100.

[0064] Through the design of the lifting adjustment assembly 300, the height position of the gas blowing pipe mechanism 100 can be flexibly adjusted according to the height requirement of the drill hole, so that the pipe end head 130 can be better aligned with drill holes of different heights, the adaptation range of the broken rock mass in-situ solidification hole protection device to different operation scenes is expanded, and the operation flexibility and applicability are improved.

[0065] Referring to Figure 1 and Figure 6 In some embodiments, the gas storage warehouse 110 is a hollow cylindrical cavity structure, which is convenient for internally accommodating the winding assembly and the wall protection pipe, is beneficial to uniform gas pressure acting on the wall protection pipe, and is also beneficial to rotation of the gas storage warehouse 110; the pipe end head 130 is connected with the circumferential cylindrical surface of the gas storage warehouse 110, the circumferential cylindrical surface of the gas storage warehouse 110 is provided with a plurality of clamping teeth 111, and the plurality of clamping teeth 111 are uniformly distributed.

[0066] The broken rock mass in-situ solidification hole protection device further comprises an inclination angle adjusting assembly 400, the inclination angle adjusting assembly 400 comprising a gear 410 and a motor 420; the motor 420 is arranged on the bearing platform 340 to provide power for inclination angle adjustment; the gear 410 is arranged at the output end of the motor 420, and the gear 410 is clamped with the clamping tooth 111 to form a stable transmission structure.

[0067] The motor 420 is used to drive the gear 410 to rotate, the gear 410 drives the gas storage cabin 110 to rotate through the meshing with the clamping tooth 111, the gas storage cabin 110 rotates synchronously to drive the pipe end head 130 to rotate, and then the inclination angle of the pipe end head 130 is adjusted.

[0068] As Figure 6 In order to improve the stability of the gas storage cabin 110, the broken rock mass in-situ solidification hole protection device is provided with two groups of inclination angle adjusting assemblies 400, the two groups of inclination angle adjusting assemblies 400 are arranged on the two sides of the gas storage cabin 110, that is, the two gears 410 are located on the two sides of the gas storage cabin 110, so that the two gears 410 control the rotation of the gas storage cabin 110 at the same time, support the gas storage cabin 110, and fix the gas storage cabin 110.

[0069] In order to further improve the stability of the gas storage cabin 110, the broken rock mass in-situ solidification hole protection device is further provided with a supporting assembly, the supporting assembly comprising a rotating shaft and a fixing piece, the rotating shaft is arranged at the center position of the circular side surface of the gas storage cabin 110, one end of the fixing piece is rotationally connected with the rotating shaft, and the other end is fixed on the bearing platform 340, so that the gas storage cabin 110 is fixed, the gas storage cabin 110 is not in direct contact with the bearing platform 340 and can rotate freely, at this time, only one group of inclination angle adjusting assemblies 400 is arranged, the gear 410 of the inclination angle adjusting assembly 400 is meshed with the clamping tooth 111, and the orientation of the pipe end head 130 can be adjusted by controlling the rotation direction and rotation angle of the motor 420.

[0070] According to the inclination angle adjusting assembly 400, the inclination angle of the pipe end head 130 can be adjusted according to the inclination angle of the drill hole, the protection wall pipe 200 can smoothly extend into the drill hole with different inclination angles, the application range of the broken rock mass in-situ solidification hole protection device is further expanded, manual adjustment of the overall angle of the broken rock mass in-situ solidification hole protection device is not needed, the operation difficulty is reduced, and the operation convenience is improved.

[0071] Referring to Figure 4 As shown in the drawings, in some embodiments, the broken rock mass in-situ solidification hole protection device further comprises a hole port nozzle 500 and an exhaust pipe 600.

[0072] One end of the hole port nozzle 500 can be inserted into the drill hole, the other end is a wide-mouth end, and faces the pipe end head 130, the protection wall pipe 200 penetrates through the hole port nozzle 500, the hole port nozzle 500 can guide the extension of the protection wall pipe and reduce the frictional damage between the protection wall pipe and the drill hole port.

[0073] The exhaust pipe 600 is a straight pipe body, and the end of the exhaust pipe 600 can pass through the hole nozzle 500 and extend into the borehole. During the process of the protection pipe 200 entering the borehole, the air in the borehole is pressed by the protection pipe, and the exhaust pipe 600 can timely exhaust the air to avoid the air pressure in the borehole being too large to hinder the extension of the protection pipe.

[0074] Referring to Figures 1-3 In some embodiments, the broken rock mass in-situ solidification hole protection device further comprises a fixing member 700, which can be a hoop fixing member, a buckle fixing member, etc. The fixing member 700 is detachably arranged on the pipe placing end head 130, and the detachable design facilitates the installation, disassembly and replacement of the fixing member.

[0075] The fixing member 700 is used to detachably fix the protection pipe 200 passing through the outwardly turned part of the pipe placing end head 130 on the pipe placing end head 130, so as to avoid the outwardly turned part of the protection pipe 200 from being separated from the pipe placing end head 130 during the process of inflating and outwardly turning the protection pipe, and to ensure that the protection pipe 200 can be stably extended.

[0076] By fixing the connection between the protection pipe 200 and the pipe placing end head 130 through the fixing member 700, the displacement or separation of the protection pipe 200 during the extension process is prevented, the stability and reliability of the extension process of the protection pipe 200 are ensured, the probability of operation failure is further reduced, and the hole protection operation efficiency is improved.

[0077] Referring to Figure 1 and Figure 2 In some embodiments, the winding assembly 120 comprises a winding disc 121 and a crank 122. The winding disc 121 is arranged in the gas storage cabin 110 and is rotationally connected with the gas storage cabin 110. The closed end of the protection pipe 200 is wound on the winding disc 121, and the winding disc 121 provides a winding carrier for the protection pipe 200, facilitating the orderly storage of the protection pipe 200.

[0078] The connecting end of the winding disc 121 extends out of the pipe placing end head 130 and is rotationally connected with the pipe placing end head 130. The crank 122 is detachably connected with the connecting end of the winding disc 121. When the protection pipe 200 needs to be wound, the crank 122 is installed on the winding disc 121, the winding disc 121 is rotated by rotating the crank 122, and then the winding of the protection pipe 200 is realized. When the winding is not needed, the crank 122 can be detached, reducing the space occupation.

[0079] Further, in some embodiments, the gas storage cabin 110 is provided with a viewing window 112, which is detachably and sealingly connected with the gas storage cabin 110. The detachable design facilitates the maintenance and replacement of the viewing window 112, and the sealing connection can prevent the gas in the gas storage cabin 110 from leaking, ensuring the stability of the air pressure.

[0080] The protective pipe 200 enters the gas storage cabin 110 through the inspection window 112, and the staff can observe the winding state, remaining amount and abnormal conditions of the protective pipe 200 in the gas storage cabin 110 through the inspection window 112, so as to find and handle problems in time.

[0081] Referring to Figure 5 As shown in the drawings, in some embodiments, the protective pipe 200 comprises an outer film 210, an inner film 220 and a fiber layer 230 between the outer film 210 and the inner film 220; the outer film 210 and the inner film 220 form a closed space to protect the internal fiber layer 230, and the fiber layer 230 can enhance the structural strength of the protective pipe 200 and improve the supporting capacity of the protective pipe 200 in the hard state.

[0082] The inner wall of the inner film 220 is coated with a curing liquid 240, which can change from a soft state to a hard state at room temperature. When the protective pipe 200 is turned out and inserted into the drill hole, the curing liquid 240 adheres to the hole wall of the drill hole and gradually hardens in the room temperature environment, thereby realizing stable support for the drill hole.

[0083] The outer film 210 is located at the innermost side of the pipe body when the protective pipe 200 is turned out and inserted into the drill hole, and does not contact the hole wall of the drill hole. The outer film 210 and the inner film 220 can be made of high-strength polymer composite film material, and the fiber layer 230 can be a glass fiber layer with stainless steel wires. The outer film 210, the inner film 220 and the fiber layer 230 constitute the main pipe body.

[0084] The curing liquid 240 is composed of epoxy resin E-51, polyamide 650, 52.5R sulphoaluminate cement and part of the accelerator. The epoxy resin E-51 is in liquid state, and the shelf life is 1-2 years. The polyamide 650 and the 52.5R sulphoaluminate cement are stored in a dry place. When used, the epoxy resin E-51 and the polyamide 650 are mixed and stirred thoroughly for at least 2-3 minutes to ensure uniformity. Then the mixed liquid is poured into the 52.5R sulphoaluminate cement and stirred quickly and efficiently. After the curing liquid 240 is prepared, it is injected from the open end of the main pipe body, coated on the inner wall of the inner film 220, and constitutes the protective pipe 200. The protective pipe 200 needs to be used as soon as possible.

[0085] The present application ensures the structural strength of the protective pipe 200 by the outer film 210, the inner film 220 and the fiber layer 230, and realizes the soft-hard change at room temperature by the curing liquid 240, so that the protective pipe 200 can be flexibly inserted into the drill hole and provide stable support.

[0086] Referring to Figure 1 and Figure 4 As shown in the drawings, in some embodiments, the inflation mechanism comprises a gas pump 800 and a gas injection pipe 900. The gas pump 800 provides a stable gas source for inflation, and can adjust the gas output according to the needs to ensure that the gas pressure in the gas storage cabin 110 rises stably.

[0087] One end of the air injection pipe 900 is connected with the exhaust end of the air pump 800, and the other end is connected with the air inlet end of the air storage bin 110. The air injection pipe 900 serves as a gas transmission channel to stably transport the gas generated by the air pump 800 into the air storage bin 110, thereby providing power for the outward turning and extending of the pipe protection pipe 200.

[0088] The application provides a broken rock mass in-situ curing hole protection device, as shown in Figures 1-4 As shown, the air storage bin 110 is inflated by the inflation mechanism, so that the air pressure in the air storage bin 110 is increased to push the pipe protection pipe 200 outward. The open end of the pipe protection pipe 200 is turned outward and sleeved on the outer wall of the pipe releasing end head 130. Then, the air pushes the pipe protection pipe 200 to turn outward and extend out of the air storage bin 110 and the pipe releasing end head 130 and extend into the borehole. At normal temperature, the pipe protection pipe 200 can be changed from a flexible state to a hard state, and the pipe protection pipe 200 in the hard state can stably support the borehole.

[0089] Referring to Figure 7 The application provides a curing hole protection method, which is applied to the broken rock mass in-situ curing hole protection device and includes the following steps.

[0090] S100: Align the pipe releasing end head 130 with the borehole.

[0091] The position of the air inflation pipe releasing mechanism 100 is adjusted to align the pipe releasing end head 130 with the borehole, so that the pipe protection pipe 200 can accurately extend into the borehole and avoid the pipe protection pipe from failing to smoothly enter the borehole or damaging the borehole wall due to alignment deviation.

[0092] Specifically, the height position of the air inflation pipe releasing mechanism 100 is adjusted by the lifting adjusting assembly 300, and the inclination angle of the pipe releasing end head 130 is adjusted by the inclination angle adjusting assembly 400, so that the pipe releasing end head 130 directly faces the borehole.

[0093] S200: Install the pipe protection pipe 200, wind the closed end of the pipe protection pipe 200 in the flexible state on the winding assembly 120, pass the open end through the pipe releasing end head 130, and then turn and sleeve the open end on the end of the pipe releasing end head 130.

[0094] The closed end of the pipe protection pipe 200 in the flexible state is wound on the winding assembly 120, so that the pipe protection pipe 200 is conveniently stored and subsequently released. The open end is passed through the pipe releasing end head 130 and then turned and sleeved on the end of the pipe releasing end head 130, so that the pipe protection pipe 200 is prepared for turning outward and extending.

[0095] Specifically, the inspection window 112 is opened, the flexible protective pipe 200 is placed in the gas storage chamber 110, the closed end of the protective pipe 200 is wound on the winding disc 121, the open end of the protective pipe 200 is inserted through the pipe end head 130, and then is sleeved on the end of the pipe end head 130 after being turned over, and is fixed by the fixing member 700. Finally, the inspection window 112 is closed and sealed.

[0096] S300: The inflation mechanism is used to inflate the gas storage chamber 110, so that the protective pipe 200 is turned outwards and sequentially extends out of the gas storage chamber 110 and the pipe end head 130 to extend into the drill hole.

[0097] The inflation mechanism is used to inflate the gas storage chamber 110, so that the gas pressure in the gas storage chamber 110 gradually increases, the protective pipe 200 is turned outwards under the action of the gas pressure, and sequentially extends out of the gas storage chamber 110 and the pipe end head 130 to extend into the drill hole, thereby achieving installation of the protective pipe 200.

[0098] Specifically, the air pump 800 is started, and the air injection pipe 900 stably conveys the gas generated by the air pump 800 into the gas storage chamber 110, so that the gas pressure in the gas storage chamber 110 gradually increases, the protective pipe 200 is pushed outwards, the air pushes the protective pipe 200 to turn outwards, and the protective pipe 200 extends out of the gas storage chamber 110 and the pipe end head 130 to extend into the drill hole.

[0099] S400: When the protective pipe 200 is changed from a flexible state to a hard state in a normal temperature environment, the part of the protective pipe 200 outside the drill hole is cut off, and the support for the drill hole is completed.

[0100] When the protective pipe 200 is changed from a flexible state to a hard state in a normal temperature environment, the protective pipe 200 can stably support the drill hole at this time, the part of the protective pipe outside the drill hole is cut off, the subsequent process is avoided from being affected by the redundant part, and the support for the drill hole is completed.

[0101] The solidification hole protection method provided in the application is based on the above-mentioned broken rock mass in-situ solidification hole protection device, has simple and easy-to-understand steps, is convenient to operate, does not need complex procedures and long waiting time, and can quickly complete the hole protection work; the flexible and hard state of the protective pipe is adapted to the operation demand, the hole protection effect is good, the problems of low efficiency and high cost of the existing hole protection method are effectively solved, and the continuity and efficiency of the mining process are improved.

[0102] It is easy to understand that, on the basis of the several embodiments provided in the application, a person skilled in the art can combine, split, recombine, etc. the embodiments of the application to obtain other embodiments, and these embodiments do not exceed the protection scope of the application.

[0103] The above detailed description of the embodiments of the present application is merely intended to provide a further detailed description of the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific implementation of the embodiments of the present application, and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A device for in-situ consolidation of a rock mass for fragmentation, characterized in that: The device comprises an inflating mechanism, a gas releasing pipe mechanism (100) and a protective pipe (200); One end of the protective pipe (200) is a closed end, and the other end is an open end; the protective pipe (200) can be transformed from a soft state to a hard state in a normal temperature environment; The gas releasing pipe mechanism (100) comprises a gas storage cabin (110), a winding assembly (120) and a pipe releasing end head (130); The winding assembly (120) is arranged in the gas storage cabin (110), and is used for winding the protective pipe (200); the pipe releasing end head (130) is in communication with the gas storage cabin (110), the open end of the protective pipe (200) passes through the pipe releasing end head (130) and is outwardly set on the outer wall of the pipe releasing end head (130); the inflating mechanism is in communication with the gas storage cabin (110), and is used for inflating the gas storage cabin (110) to make the protective pipe (200) in the gas storage cabin (110) outwardly turn over to sequentially extend out of the gas storage cabin (110) and the pipe releasing end head (130); The gas storage cabin (110) is a hollow cylindrical cavity structure, the pipe releasing end head (130) is connected with the circumferential cylindrical surface of the gas storage cabin (110), and the circumferential cylindrical surface of the gas storage cabin (110) is provided with a clamping tooth (111); The broken rock mass in-situ solidification hole protection device further comprises a tilt angle adjusting assembly (400), and the tilt angle adjusting assembly (400) comprises a gear (410) and a motor (420); The gear (410) is arranged on the output end of the motor (420), and two gears (410) are respectively arranged on the two sides of the gas storage cabin (110); the gear (410) is clamped with the clamping tooth (111); The motor (420) is used for driving the gear (410) and the gas storage cabin (110) to rotate, so as to adjust the tilt angle of the pipe releasing end head (130); The broken rock mass in-situ solidification hole protection device further comprises a hole nozzle (500) and an exhaust pipe (600); One end of the hole nozzle (500) can be inserted into a drill hole, and the other end is opposite to the pipe releasing end head (130); the protective pipe (200) penetrates through the hole nozzle (500); The end of the exhaust pipe (600) can penetrate through the hole nozzle (500) and extend into the drill hole; the exhaust pipe (600) is used for exhausting air in the drill hole when the protective pipe (200) enters the drill hole.

2. The broken rock mass in-situ solidification hole protection device according to claim 1, further comprising a lifting adjusting assembly (300), wherein the lifting adjusting assembly (300) comprises a base (310), a folding support (320), an extension mechanism (330) and a bearing platform (340). ​ The folding support (320) is arranged on the base (310), the bearing platform (340) is arranged at the top end of the folding support (320), the air blowing pipe mechanism (100) is arranged on the bearing platform (340), and the motor (420) is arranged on the bearing platform (340); The two ends of the telescopic mechanism (330) are respectively hinged to the base (310) and the folding support (320), and the telescopic mechanism (330) is used for driving the folding support (320) to expand or shrink, so that the bearing platform (340) and the air blowing pipe mechanism (100) are raised or lowered.

3. The broken rock mass in-situ solidification hole protection device according to claim 1, characterized in that: The broken rock mass in-situ solidification hole protection device further comprises a fixing member (700) which is detachably arranged on the pipe end head (130); The fixing member (700) is used for detachably fixing the protection wall pipe (200) passing through the outward turning part of the pipe end head (130) on the pipe end head (130).

4. The broken rock mass in-situ solidification hole protection device according to claim 1, characterized in that: The winding assembly (120) comprises a winding disc (121) and a crank (122); The winding disc (121) is arranged in the gas storage bin (110), the winding disc (121) is rotationally connected with the gas storage bin (110), and the closed end of the protection wall pipe (200) is wound on the winding disc (121); The crank (122) is detachably connected with the winding disc (121), and the crank (122) is used for rotating the winding disc (121) to wind the protection wall pipe (200).

5. The broken rock mass in-situ solidification hole protection device according to claim 1, characterized in that: The gas storage bin (110) is provided with a viewing window (112), and the viewing window (112) is detachably and sealingly connected with the gas storage bin (110); The protection wall pipe (200) enters the gas storage bin (110) through the viewing window (112).

6. The broken rock mass in-situ solidification hole protection device according to claim 1, characterized in that: The protection wall pipe (200) comprises an outer membrane (210), an inner membrane (220) and a fiber layer (230) between the outer membrane (210) and the inner membrane (220); The inner wall of the inner membrane (220) is coated with a solidification liquid (240), and the solidification liquid (240) can be changed from a soft state to a hard state at normal temperature.

7. The broken rock mass in-situ solidification hole protection device according to claim 1, characterized in that: The air charging mechanism comprises an air pump (800) and an air injection pipe (900); One end of the air injection pipe (900) is connected with the exhaust end of the air pump (800), and the other end is connected with the air inlet end of the gas storage bin (110).

8. A method of curing a borehole, characterized by: The method is applied to the broken rock mass in-situ solidification hole protection device according to any one of claims 1 to 7, and the method comprises: Aligning the pipe end head (130) with the drilling hole in parallel; The closed end of the flexible wall pipe (200) is wound on the winding assembly (120), the open end is passed through the pipe end head (130), and is reversely sleeved on the end of the pipe end head (130); The inflation mechanism is used to inflate the gas storage bin (110), so that the wall pipe (200) is turned outward, and sequentially extends out of the gas storage bin (110) and the pipe end head (130) to extend into the drill hole; When the wall pipe (200) is changed from a flexible state to a hard state in a normal temperature environment, the part of the wall pipe (200) outside the drill hole is cut off, and the support of the drill hole is completed.

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