Pre-supporting and tunneling device and method for non-blasting tunnel face

Abstract

The invention provides a non-blasting tunnel face pre-supporting and tunneling device and method, and relates to the technical field of tunnel face tunneling, the non-blasting tunnel face pre-supporting and tunneling device comprises a tunnel, a tunnel face is arranged at one end of the tunnel, and a primary support is connected to the top of the middle of the tunnel, and is characterized in that a support is connected in the tunnel, a movable base is arranged at the bottom of the support, and a displacement groove is formed in the top of the support; a propeller is arranged in the middle of the displacement groove, one end of the propeller is connected with a rotating motor, one end of the rotating motor is in transmission connection with a chain saw guide plate, a chain is arranged on the side wall of the chain saw guide plate, guide teeth are arranged on one side of the chain, a ventilation assembly is arranged in the chain saw guide plate, and the ventilation assembly penetrates through the chain and the guide teeth. And an ejector rod is arranged at the top of the tunneling device, a recycling assembly is arranged at the top of the tunneling device, and the recycling assembly conducts telescopic displacement along the groove.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel face excavation, and in particular to a non-blasting tunnel face pre-support excavation device and a method thereof. Background Art

[0002] Face excavation refers to the forward excavation construction step of the tunnel ground. Existing excavation is carried out through blasting.

[0003] However, the existing blasting will produce a large amount of smoke and dust, which requires time to deal with before construction can continue. At the same time, because the heading face is not pre-supported, mud and rocks are easily dropped during the construction of the initial support after the excavation is completed, which affects the construction. Summary of the invention

[0004] The purpose of the present invention is to provide a non-blasting face pre-support excavation device and method thereof, so as to solve the problems that a large amount of smoke and dust will be generated when the tunnel is excavated by blasting, affecting the construction period, and the face is not pre-supported after excavation, which leads to mud and rocks falling easily during the construction of initial support and construction, affecting the construction.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention provides a non-blasting face pre-support excavation device and method, comprising a tunnel, a face being arranged at one end of the tunnel, a primary support being connected to the middle top of the tunnel, and characterized in that a bracket is connected in the tunnel, a movable base being arranged at the bottom of the bracket, a displacement groove being arranged at the top of the bracket, a thruster being arranged in the middle of the displacement groove, a rotating motor being connected at one end of the thruster, a chain being arranged at one end of the rotating motor, a guide tooth being arranged at one side of the chain, a ventilation component being arranged inside the guide tooth, the ventilation component passing through the chain and the guide tooth, a tunneling machine being connected in the middle of the tunnel, a top rod being arranged at the top of the tunneling machine, a recovery component being arranged at the top of the tunneling machine, and the recovery component being telescopically displaced along the groove.

[0007] Preferably, the rotary motor further comprises a limit block, a positioning rod and a connecting rod, the limit blocks are arranged on both sides of the rotary motor, the positioning rod is arranged on the top of the limit block and one end of the connecting rod.

[0008] Preferably, the chain saw guide plate is arranged at one end of the rotating motor through a connecting rod, and strip openings that cooperate with the positioning rod are arranged on both sides of the opening of the displacement slot, and marking scale numbers are arranged at the openings.

[0009] Preferably, the displacement groove further includes limiting grooves, and the limiting grooves are arranged on both sides of the inner wall of the displacement groove.

[0010] Preferably, the limiting groove cooperates with the limiting block.

[0011] Preferably, the ventilation assembly includes an airflow conveying pipe, an airflow cavity, an exhaust hole, a contraction groove, a limiting ball, an airflow channel and a diversion channel. The airflow conveying pipe is arranged on one side of the chainsaw guide plate. The airflow cavity is a cavity arranged inside the chainsaw guide plate and connected to the airflow conveying pipe. The exhaust hole is arranged around the inner wall of the airflow cavity. The contraction groove is arranged on both sides of the inner wall of the side wall of the chainsaw guide plate that cooperates with the guide tooth groove. The limiting ball is connected to the middle of the contraction groove. The airflow channel is an opening that passes through the inside of the guide tooth. The diversion channel is a through hole that extends in an arc shape inside the chain and is connected to the airflow channel.

[0012] Preferably, the limiting ball is connected to the contraction groove through a block abutting on one side, one side of the block is connected to the contraction groove through a spring, and the radius of the limiting ball is smaller than the opening of the contraction groove, and grooves cooperating with the limiting ball are provided on both sides of the guide tooth.

[0013] Preferably, the tunneling device further comprises a rotating roller, which is connected to one side of the top of the tunneling device, and the rotating roller is driven by a gear driven by a motor, and one side of the rotating roller is fixedly connected to a hydraulically driven top rod.

[0014] Preferably, the recovery assembly includes a displacement frame, a drill rod, a push rod and a lifting rod. The displacement frame is arranged in a groove at the top of the tunneling device, the drill rod is connected to the middle of the displacement frame, the push rod is an electric telescopic rod arranged on one side of the displacement frame, and the lifting rod is a hydraulic telescopic rod connected to the drill rod at the bottom of the middle of the displacement frame.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0016] 1. Through the support and the rotating motor provided in the device, the chain saw can be moved to the arc edge of the face for cutting, and then the chain saw can be moved along the arc edge of the face by the rotation of the rotating motor, thereby cutting out a groove for pouring pre-support.

[0017] 2. The device is also provided with a ventilation component, which is connected to the chainsaw through the ventilation component, so that when the chainsaw is in operation, airflow will be ejected from the edge of the chainsaw guide plate, thereby preventing mud and sand from accumulating in the side wall grooves of the chainsaw guide plate and the chain, causing the chain to jam and wear.

[0018] 3. The device is also provided with a tunneling device, through which non-explosive tunneling can be carried out on the tunnel face, and the tunnel face divided into a mesh can be partially and segmentally dismantled, and then it can be completely recycled, so that a large amount of smoke and dust will not be generated and the stone can be completely recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the bracket of the present invention;

[0021] Figure 2 is a schematic diagram of a front cross-sectional structure of the stent of the present invention;

[0022] Figure 3 It is a partial top view structural schematic diagram of the bracket of the present invention;

[0023] Figure 4 It is a partial structural schematic diagram of the chain saw guide plate and chain of the present invention;

[0024] Figure 5 It is a schematic diagram of the side cross-sectional structure of the chain saw guide plate and the chain of the support of the present invention;

[0025] Figure 6 The stent of the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 7 It is a schematic diagram of the overall structure of the support boring machine of the present invention;

[0027] Figure 8 It is a partial top view structural schematic diagram of the support boring machine of the present invention;

[0028] Fig. 9 It is a schematic diagram of the front cross-sectional structure of the support boring machine of the present invention;

[0029] Icons: tunnel 1, heading face 101, primary support 102, bracket 2, movable base 201, displacement groove 202, limit groove 2021, thruster 203, rotating motor 204, limit block 2041, positioning rod 2042, connecting rod 205, chainsaw guide 206, air flow pipe 2061, air flow cavity 2062, exhaust hole 2063, contraction groove 2064, limiting ball 2065, chain 207, guide tooth 2071, air flow channel 2072, diversion channel 2073, boring device 3, rotating roller 301, top rod 302, displacement frame 303, drill rod 3031, push rod 3032, lifting rod 3033. DETAILED DESCRIPTION

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Combine the following Figures 1 to 9 The present invention is described in detail.

[0032] A non-blasting face pre-support excavation device comprises a tunnel 1, a face 1011 is arranged at one end of the tunnel 1, a primary support 102 is connected to the middle top of the tunnel 1, a support 2 is connected in the tunnel 1, a movable base 201 is arranged at the bottom of the support 2, a displacement groove 202 is arranged at the top of the support 2, a propeller 203 is arranged in the middle of the displacement groove 202, one end of the propeller 203 is connected to a rotating motor 204, one end of the rotating motor 204 is connected to a chain saw guide plate 206, a side wall of the chain saw guide plate 206 is arranged with a chain 207, one side of the chain 207 is arranged with a guide tooth 2071, a ventilation component is arranged inside the chain saw guide plate 206, and the ventilation component passes through the chain 207 and the guide tooth 2071, a tunneling device 3 is connected in the middle of the tunnel 1, a top rod 302 is arranged on the top of the tunneling device 3, and an excavator 3 is connected to the tunneling device 3. The top of the excavator 3 is provided with a recovery component, and the recovery component is telescopically displaced along the groove. The rotating motor 204 also includes a limit block 2041, a positioning rod 2042 and a connecting rod 205. The limit block 2041 is arranged on both sides of the rotating motor 204, the positioning rod 2042 is arranged on the top of the limit block 2041, the connecting rod 205 is arranged at one end of the rotating motor 204, and the chain saw guide plate 206 is arranged at one end of the rotating motor 204 through the connecting rod 205. Strip openings that penetrate and cooperate with the positioning rod 2042 are arranged on both sides of the opening of the displacement groove 202, and an identification scale number is arranged at the opening. The displacement groove 202 also includes a limit groove 2021, and the limit groove 2021 is arranged on both sides of the inner wall of the displacement groove 202, and the limit groove 2021 cooperates with the limit block 2041.

[0033] First, tunnel 1 is excavated, and then after excavating a certain distance, an initial support 102 is built on the inner wall of the tunnel to initially stabilize it, and then the support 2 is moved to the front of the face 101 in the tunnel through the movable base 201, and then the rotary motor 204 is pushed by the thruster 203 to move along the displacement groove 202, thereby driving the chain saw guide plate 206 and the chain 207 connected by the mobile connecting rod 205 to approach the arc edge of the face 101, and then start to operate and cut into the edge of the face 101, and then the connecting rod 205 is driven by the rotating motor 204 to swing along the arc edge of the face 101, thereby cutting out a groove that matches the arc edge of the face 101, and then laying isolation plates and pouring cement, thereby forming an arched pre-support, so that the top is more stable when the face is excavated, and no mud and rocks fall.

[0034] At the same time, the rotating motor 204 will move in a limited manner through the limit blocks 2041 on both sides, and then drive the top positioning rod 2042 to move. The movement of the positioning rod 2042 will move along the strip groove, and the digging distance of the chain saw can be located by the scale number on the strip groove, so as to facilitate the control of the digging depth.

[0035] Furthermore, the ventilation assembly includes an airflow conveying pipe 2061, an airflow cavity 2062, an exhaust hole 2063, a contraction groove 2064, a limiting ball 2065, an airflow channel 2072 and a diversion channel 2073. The airflow conveying pipe 2061 is arranged on one side of the chain saw guide plate 206. The airflow cavity 2062 is a cavity arranged inside the chain saw guide plate 206 and connected to the airflow conveying pipe 2061. The exhaust hole 2063 is arranged around the inner wall of the airflow cavity 2062. The contraction groove 2064 is arranged on both sides of the inner wall of the side wall of the chain saw guide plate 206 that cooperates with the groove of the guide tooth 2071. The limiting ball 2065 is connected to the middle of the contraction groove 2064. The airflow channel 2072 is a guide tooth 2073. 1 is an opening that passes through the inside of the chain 207, the diversion channel 2073 is a through hole that extends in an arc shape inside the chain 207 and communicates with the air flow channel 2072, the limiting ball 2065 is connected to the contraction groove 2064 through a block that abuts on one side, one side of the block is connected to the contraction groove 2064 through a spring, and the radius of the limiting ball 2065 is smaller than the opening of the contraction groove 2064, and grooves that match the limiting ball 2065 are provided on both sides of the guide tooth 2071. The excavator 3 also includes a rotating roller 301, which is connected to one side of the top of the excavator 3, and the rotating roller 301 is driven by meshing through a gear driven by a motor, and one side of the rotating roller 301 is fixedly connected to a hydraulically driven top rod 302.

[0036] Then, when the chain 207 is operating for cutting and excavation, air flow will be injected into the air flow chamber 2062 in the chain saw guide plate 206 through the air flow conveying pipe 2061, and then discharged into the groove connected to the guide tooth 2071 through the exhaust hole 2063, so as to blow out the mud and sand accumulated in the groove, so that it will not accumulate in the groove and affect the operation of the chain 207. At the same time, when the guide tooth 2071 runs along the groove, the exhaust hole 2063 will be temporarily connected with the air flow channel 2072, and then sprayed out from both sides of the chain 207 through the diversion channel 2073, so as to cooperate with the operation of the chain 207 to form an air flow disturbance, so that mud and sand will not easily enter the chain 207 and the groove to affect the operation of the chain.

[0037] At the same time, when the guide tooth 207 moves along the groove during operation, the grooves on both sides will cooperate with the limiting ball 2065 to move, and the limiting ball 2065 is used to limit the guide tooth 207 to a certain extent to prevent the guide tooth 207 from being blown and causing disturbance when the air flow is discharged. Then the limiting ball 2065 is connected to the contraction groove 2064 through the bottom stop block, so that when the chain 207 is disassembled and assembled, it can be disassembled and assembled by squeezing and contracting the limiting ball 2065 to allow it to move along the contraction groove 2064.

[0038] Furthermore, the recovery assembly includes a displacement frame 303, a drill rod 3031, a push rod 3032 and a lifting rod 3033. The displacement frame 303 is arranged in a groove at the top of the boring device 3, the drill rod 3031 is connected to the middle part of the displacement frame 303, the push rod 3032 is an electric telescopic rod arranged on one side of the displacement frame 303, and the lifting rod 3033 is a hydraulic telescopic rod connected to the drill rod 3031 at the bottom of the middle part of the displacement frame 303.

[0039] Finally, after the pre-support is completed, the chain saw is disassembled, and then the tunnel face 101 is mesh-cut, and then the tunneling device 3 is moved to the front of the cut tunnel face 101 through the movable base 201, and then the movable base 201 is raised and lowered to allow the top rod 302 to approach the partial gap of the cut tunnel face 101 that needs to be dismantled, and then the rotating roller 301 is rotated and adjusted to allow the top rod 302 to be tilted close to the gap, and then the top rod 302 is hydraulically extended to apply pressure to the cut tunnel face 101 that is in contact with one end, thereby breaking and separating the cut tunnel face 101 that is pressed against, and at the same time, the rotating roller 301 can also be rotated to apply force downward to press against the cut tunnel face 101 located below.

[0040] Then, the displacement frame 303 is moved by the pushing rod 3032 to drive the drill rod 3031 to move and contact the broken and separated split tunnel face 101, and then drill in and connect, and then pull it out by resetting the displacement frame 303, so as to complete the recovery of the split tunnel face 101 located above, so that it can be separated from the tunnel face 101, which is convenient for its separate recovery, so that the broken and separated split tunnel face can be completely recovered, and at the same time, the lifting rod 3033 can also facilitate the drill rod 3031 to cooperate with the split tunnel faces at different local positions.

[0041] The following is a specific implementation process of the present invention. First, the tunnel 1 is excavated. After a certain distance has been excavated, the initial support 102 is built on the inner wall of the tunnel to stabilize it. Then, the support 2 is moved to the front of the tunnel face 101 through the movable base 201 in the tunnel. Then, the rotary motor 204 is pushed along the displacement groove 202 by the propeller 203, thereby driving the chain saw guide plate 206 and the chain 207 connected by the mobile connecting rod 205 to approach the arc edge of the tunnel face 101, and then the operation starts to cut into the edge of the tunnel face 101, and then The connecting rod 205 is driven by the rotating motor 204 to swing along the arc edge of the face 101, thereby cutting a groove that matches the arc edge of the face 101, and then laying an isolation plate and pouring cement to form an arched pre-support, so that the top is more stable when the face is excavated, and no mud and rocks will fall. Finally, after the pre-support is completed, the chain saw is disassembled, and the face 101 is mesh-cut, and then the tunneling device 3 is moved to the front of the cut face 101 through the movable base 201, and then the movable base 201 is used to move the tunneling device 3 to the front of the cut face 101. The base 201 is raised and lowered to allow the push rod 302 to approach the gap of the slitting face 101 that needs to be dismantled, and then the push rod 302 is tilted to approach the gap through the rotation adjustment of the rotating roller 301, and the push rod 302 is hydraulically extended to apply pressure to the slitting face 101 that is in contact with one end, so as to break and separate the slitting face 101 that is pressed against. At the same time, the rotating roller 301 can also be rotated to apply force downward to press the slitting face 101 located below, and then The displacement frame 303 moves by pushing the rod 3032 to drive the drill rod 3031 to move and contact the broken and separated split tunnel face 101, and then drills in to connect, and then pulls it out by resetting the displacement frame 303, thereby completing the recovery of the split tunnel face 101 located above, allowing it to separate from the tunnel face 101, so that it can be recovered separately, so that the broken and separated split tunnel face can be completely recovered, and at the same time, the lifting rod 3033 can also facilitate the drill rod 3031 to cooperate with the split tunnel faces at different local positions.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-blasting tunnel face pre-support excavation device, comprising a tunnel (1), one end of the tunnel (1) is provided with a tunnel face (1011), the middle top of the tunnel (1) is connected with a primary support (102), characterized in that: The tunnel (1) is connected with a support (2), the bottom of the support (2) is provided with a movable base (201), the top of the support (2) is provided with a displacement groove (202), the middle of the displacement groove (202) is provided with a propeller (203), one end of the propeller (203) is connected with a rotating motor (204), one end of the rotating motor (204) is drivingly connected with an oil saw guide plate (206), and the side wall of the oil saw guide plate (206) is provided with a chain (20 7), a guide tooth (2071) is arranged on one side of the chain (207), a ventilation component is arranged inside the chain saw guide plate (206), the ventilation component passes through the chain (207) and the guide tooth (2071), a boring machine (3) is connected to the middle of the tunnel (1), a top rod (302) is arranged on the top of the boring machine (3), a recovery component is arranged on the top of the boring machine (3), and the recovery component is telescopically displaced along the groove.

2. The non-blasting tunnel face pre-support excavation device according to claim 1, characterized in that: The rotating motor (204) further comprises a limit block (2041), a positioning rod (2042) and a connecting rod (205), wherein the limit block (2041) is arranged on both sides of the rotating motor (204), the positioning rod (2042) is arranged on the top of the limit block (2041), and the connecting rod (205) is arranged at one end of the rotating motor (204).

3. The non-blasting tunnel face pre-support excavation device according to claim 2 is characterized in that: The chain saw guide plate (206) is arranged at one end of the rotating motor (204) through a connecting rod (205); strip openings that cooperate with the positioning rod (2042) are arranged on both sides of the opening of the displacement groove (202); and a marking scale number is arranged at the opening of the displacement groove (202).

4. The non-blasting tunnel face pre-support excavation device according to claim 1, characterized in that: The displacement groove (202) further comprises limiting grooves (2021), and the limiting grooves (2021) are arranged on both sides of the inner wall of the displacement groove (202).

5. The non-blasting tunnel face pre-support excavation device according to claim 4, characterized in that: The limiting groove (2021) cooperates with the limiting block (2041).

6. The non-blasting tunnel face pre-support excavation device according to claim 1, characterized in that: The ventilation assembly comprises an airflow conveying pipe (2061), an airflow cavity (2062), an exhaust hole (2063), a contraction groove (2064), a limiting ball (2065), an airflow channel (2072) and a diversion channel (2073); the airflow conveying pipe (2061) is arranged on one side of the chain saw guide plate (206); the airflow cavity (2062) is a cavity arranged inside the chain saw guide plate (206) and communicating with the airflow conveying pipe (2061); the exhaust hole (2063) is a hollow cavity arranged inside the chain saw guide plate (206) and communicating with the airflow conveying pipe (2061); and the exhaust hole (2064) is a hollow cavity arranged inside the chain saw guide plate (206) and communicating with the airflow conveying pipe (2061). The contraction groove (2064) is arranged on both sides of the inner wall of the side wall of the chain saw guide plate (206) and matches the groove of the guide tooth (2071). The limiting ball (2065) is connected to the middle of the contraction groove (2064). The airflow channel (2072) is an opening that passes through the inside of the guide tooth (2071). The diversion channel (2073) is a through hole that extends in an arc shape inside the chain (207) and is connected to the airflow channel (2072).

7. The non-blasting tunnel face pre-support excavation device according to claim 6, characterized in that: The limiting ball (2065) is connected to the contraction groove (2064) through a block abutting on one side, one side of the block is connected to the contraction groove (2064) through a spring, and the radius of the limiting ball (2065) is smaller than the opening of the contraction groove (2064), and grooves cooperating with the limiting ball (2065) are provided on both sides of the guide tooth (2071).

8. The non-blasting tunnel face pre-support excavation device according to claim 1, characterized in that: The tunneling device (3) further comprises a rotating roller (301), wherein the rotating roller (301) is connected to one side of the top of the tunneling device (3), the rotating roller (301) is driven by meshing gears driven by a motor, and one side of the rotating roller (301) is fixedly connected to a hydraulically driven top rod (302).

9. The non-blasting tunnel face pre-support excavation device according to claim 1, characterized in that: The recovery assembly comprises a displacement frame (303), a drill rod (3031), a push rod (3032) and a lifting rod (3033); the displacement frame (303) is arranged in a groove at the top of the excavator (3); the drill rod (3031) is connected to the middle of the displacement frame (303); the push rod (3032) is an electric telescopic rod arranged on one side of the displacement frame (303); and the lifting rod (3033) is a hydraulic telescopic rod connected to the drill rod (3031) at the bottom of the middle of the displacement frame (303).

10. A method for using the non-blasting tunnel face pre-support excavation device according to any one of claims 1 to 9, wherein the steps are as follows; The first step is to first move the support (2) to the front of the palm face (101) through the movable base (201) at the bottom, and then adjust the extension and position of the movable base (201) so that the chain saw guide plate (206) and the chain (207) at the top can be aligned with the arc edge of the palm face (101); In the second step, after the chain saw guide plate (206) and the chain (207) are adjusted to a suitable position, they are rotated to cut into the arc edge of the face (101), and the pusher 203 is used to push the pusher to cut into the face. Then, the motor (204) is driven to swing the chain saw guide plate (206) and the chain (207) along the arc edge of the face (101), thereby cutting out an arched groove. The third step is to cut an arch matching the arc edge of the tunnel face (101) by the chain saw guide plate (206) and the chain (207), lay an isolation cloth in the groove, and then pour cement, so as to form an advanced cement support of the tunnel face; Step 4: After the pre-support is completed, the chain saw guide plate (206) and the chain (207) are disassembled, and then the tunnel face (101) is cut into a mesh shape; The fifth step is to move the tunneling device (3) to the front of the segmented tunnel face (101) through the movable base (201), and then the top rod (302) is tilted and extended into the gap of the segmented tunnel face (101) through the lifting and lowering of the movable base (201) and the rotation adjustment of the rotating roller (301), and then driven and extended by hydraulic pressure to apply pressure to the upper part of the segmented tunnel face (101) against which the top rod (302) abuts, so that this part of the tunnel face (101) is pressed and fractured; Step 6: After the split tunnel face (101) is partially dismantled by the top rod (302), the displacement frame (303) is moved to allow the drill rod (3031) to drill into the split tunnel face (101) that has been broken and dismantled, and then the drill rod (3031) is moved to drag it out, so that the split tunnel face (101) at the high displacement position can be recovered; In the second step, the chain (207) is operated along the chain saw guide plate (206) to cut and dig, and the air flow is ejected through the internal ventilation component to prevent the dust and gravel caused by the cutting from accumulating in the chain (207) and the groove connecting the guide tooth (2071).

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