Safe and rapid handling device and method for tunnel arch collapse

Abstract

The invention discloses a safe and rapid handling device and method for tunnel arch collapse, the device comprises a supporting mold connected with a maintenance vehicle through a posture adjusting mechanism, the supporting mold is formed by splicing a plurality of arch-shaped templates, a grouting pipe is installed on one or more arch-shaped templates, the inlet end of the grouting pipe is connected with a grouting pump, and the outlet end of the grouting pipe is connected with a grouting pump. An adjustable tunneling mechanism is arranged below the supporting mold and connected with a posture adjusting mechanism. According to the method, the tunnel arch collapse position is reinforced through the device. According to the method, the collapse area can be efficiently treated, and the influence of collapse on the construction period and the construction safety is reduced. The method is suitable for the technical field of tunnel arch collapse repair in tunnel construction.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a safe and rapid disposal method for tunnel arch collapse. Background Art

[0002] At present, when constructing tunnels in post-seismic tectonic geological areas, the surrounding rock of the stratum is broken, the joints and fissures are developed, and the self-stabilizing ability is poor. After the tunnel is excavated and before the initial support is carried out, the arch is very likely to collapse and fall. After the tunnel arch collapses, a collapse cavity is often formed at the arch position of the tunnel. If it is not handled in time, the collapse cavity may continue to collapse and expand, posing a threat to the safety of the subsequent tunnel structure. However, it is difficult to backfill the collapse cavity using existing means, and the strength of the backfill part is low. In addition, during the treatment process, the surrounding rock is exposed for a long time, and a support system cannot be formed quickly, which causes a secondary collapse accident. Therefore, it is necessary to target the situation where the arch collapses in the poor strata with developed joints, broken rock mass, and poor rock formations tending to the mountain. A safe and fast tunnel arch collapse treatment method is urgently needed to efficiently treat the collapse area and reduce the impact of the collapse on the construction period and construction safety. Summary of the invention

[0003] Aiming at the situation that the vault collapse occurs in the tunnel in the unfavorable strata with developed joints, broken rock mass and poor rock formation dip tendency towards the mountain, the present invention proposes a safe and fast tunnel vault collapse treatment device and method, which can efficiently treat the collapsed area and reduce the impact of the collapse on the construction period and construction safety.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A safe and rapid disposal device for tunnel arch collapse comprises a support mould connected to a maintenance vehicle via a posture adjustment mechanism, wherein the support mould is formed by a plurality of arch moulds being spliced ​​together, a grouting pipe is installed on one or more arch moulds, the inlet end of the grouting pipe is connected to a grouting pump, an adjustable excavation mechanism is arranged below the support mould, and the adjustable excavation mechanism is connected to the posture adjustment mechanism.

[0005] Furthermore, an annular air bag is installed on the peripheral edge of the supporting mold. When the supporting mold is fitted with the lower end of the collapse cavity, the inflated annular air bag contacts the corresponding position of the inner wall of the tunnel.

[0006] Furthermore, two articulated compacting mechanisms are symmetrically mounted on each of the arched templates, each of the articulated compacting mechanisms is connected to the posture adjustment mechanism, and one end of the grouting pipe passes through the corresponding articulated compacting mechanism and extends into the collapse cavity.

[0007] Furthermore, the articulated compacting mechanism includes a compacting component connected to the arched template in an articulated manner, and the arched molds located on the same side of the supporting mold are connected to the posture adjustment mechanism through a connecting rod.

[0008] Furthermore, the sealing component includes a joint shell, a connecting tube and a sealing column head. The joint shell is constructed on the arch template, and has a joint opening that penetrates the arch template. A joint knot is coaxially constructed on the outer peripheral wall of the connecting tube. The joint knot is movably assembled in the joint opening. The lower end of the sealing column head extends into the connecting tube. A guide rod is coaxially constructed at the lower end of the sealing column head. The guide rod movably extends out of the lower end of the connecting tube. A driving cavity is formed in the connecting tube and between the sealing column head and the lower end of the connecting tube. A connecting spring is arranged in the driving cavity. The two ends of the connecting spring are respectively connected to the sealing column head and the connecting tube.

[0009] Furthermore, the arch template includes a template body, a fixed block is constructed on the lower end surface of the middle part of the template body, an assembly rod passes through the fixed block and is fixedly connected to the fixed block, a hydraulic hose connected to the driving cavity is constructed on each connecting cylinder, and a hydraulic channel is constructed in the assembly rod, and the hydraulic channel is connected to the corresponding hydraulic hose through a conducting hole opened on the assembly rod.

[0010] Furthermore, the posture adjustment mechanism includes a first vertical cylinder and an adapter seat, the first vertical cylinder is connected to the assembly seat, the first vertical cylinder is connected to the first longitudinal cylinder, one end of the assembly rod is installed on the assembly seat, the adapter seat is connected to the second vertical cylinder, an assembly set is installed on the cylinder rod of the second vertical cylinder, the assembly set is movably sleeved on the assembly rod, and one end of the second longitudinal cylinder is fixedly connected to the assembly rod, the other end of the second longitudinal cylinder is connected to the assembly set, the adapter seat is rotatably connected to two adapter arms through two adapter shafts, and one end of each adapter arm away from the adapter shaft is connected to the corresponding connecting rod.

[0011] Furthermore, the assembly hole passes through the compaction column head and the guide rod along the axis of the compaction column head, the grouting pipe is assembled in the assembly hole, and the assembly hole not assembled with the grouting pipe is sealed by a sealing plunger.

[0012] Furthermore, the adjustable excavation mechanism includes two symmetrically arranged mounting plates, and two transmission wheels are connected to each mounting plate for rotation at intervals along the length direction of the tunnel, a transmission belt is transmission-connected to the two transmission wheels, and a plurality of buckets are installed on the transmission belt at intervals along its extension direction, and one axial end of a transmission wheel is connected to the output shaft of the first drive motor; a sliding seat is constructed at one end of the mounting plate close to the maintenance vehicle, and the sliding seat is slidably assembled on a transverse guide rail, a transverse lead screw is reversely threadedly connected to the two mounting plates, one end of the transverse lead screw is connected to the output shaft of the second drive motor, the transverse guide rail is connected to the third longitudinal cylinder, the third vertical cylinder is connected to the third longitudinal cylinder, and the third vertical cylinder is connected to the maintenance vehicle via a connecting plate.

[0013] The present invention also discloses a method for using the above-mentioned tunnel arch collapse safety and rapid disposal device, comprising the following steps: Step 1. According to the size of the arch collapse area, select multiple arch templates and splice them together to form a support mold; Step 2: Drive the maintenance vehicle in the tunnel until the maintenance vehicle reaches the location where the arch collapses; Step 3. Install a grouting pipe on one or more arched templates, and connect the inlet end of the grouting pipe to a grouting pump; Step 4. Control the posture adjustment mechanism so that the grouting pipe extends into the collapse cavity of the arch collapse; then start the grouting pump to eject the concrete slurry through the grouting pipe and spray it on the inner wall of the collapse cavity, and at the same time control the posture adjustment mechanism to stop the grouting pump after the concrete slurry covers the inner wall of the collapse cavity; Step 5. After the concrete slurry on the inner wall of the collapse cavity solidifies, the posture adjustment mechanism is controlled to drive the support mold to close the lower port of the collapse cavity; Step 6. Start the grouting pump and gradually inject concrete into the collapse cavity until it is full, then remove the grouting pipe; Step 7. After the concrete in the collapse cavity is completely solidified, the posture adjustment mechanism is controlled to drive the support mold to disengage.

[0014] Due to the adoption of the above structure, the technical progress achieved by the present invention compared with the prior art is that: the present invention sprays the concrete slurry evenly onto the tunnel surrounding rock, thereby quickly forming a layer of concrete support structure with a certain strength, and the sprayed concrete slurry can fit tightly with the surrounding rock and the support structure, and can be used to block most of the gaps on the surface of the surrounding rock, and fill most of the gaps between the support structure and the surrounding rock. According to the size of the opening of the collapse cavity, the present invention adopts a plurality of arch templates to splice each other to form a support mold, so that the support mold can completely block the opening of the collapse cavity. Moreover, in the process of spraying the concrete support structure, and in the subsequent process of concrete filling the collapse cavity, the posture adjustment mechanism is controlled to drive the grouting pipe to move (swing) in the collapse cavity, ensuring that the concrete slurry is evenly sprayed on the inner wall of the collapse cavity, improving the effect of the concrete support structure molding, and ensuring that the concrete quickly fills the collapse cavity. In summary, the present invention can efficiently and reasonably deal with the collapsed area in the case of arch collapse in the tunnel in the unfavorable strata with developed joints, broken rock mass, and poor rock formation dip tendency towards the mountain, and effectively avoid the recurrence of collapse after the collapsed part is repaired, thereby reducing the impact of collapse on the construction period and construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture: Figure 1 It is a structural schematic diagram of the connection between the support mold, the posture adjustment mechanism and the adjustable excavation mechanism according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of the connection between the support mold, the posture adjustment mechanism and multiple grouting pipes according to an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of another angle of the structure shown; Figure 4 It is a structural schematic diagram of the connection between the support mold, the annular inflatable bag and multiple grouting pipes according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the connection between the arch formwork, the articulated compacting mechanism and the grouting pipe according to an embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of another angle of the structure shown; Figure 7 for Figure 5 a cross-sectional view of the structure shown; Figure 8It is a structural schematic diagram of a posture adjustment mechanism according to an embodiment of the present invention; Fig. 9 It is a schematic structural diagram of an adjustable tunneling mechanism according to an embodiment of the present invention.

[0017] Labeled parts: 100-arch template, 101-template body, 102-fixed block, 103-joint shell, 200-jointed pressing mechanism, 201-joint knot, 202-connecting cylinder, 203-driving chamber, 204-connecting ear, 205-pressing column head, 206-guide rod, 207-assembly hole, 208-connecting spring, 209-hydraulic hose, 300-grouting pipe, 400-attitude adjustment mechanism, 401-first longitudinal cylinder, 402-first vertical cylinder, 403-assembly seat, 404-adapter seat, 405-adapter shaft, 406-adapter arm, 407-second vertical cylinder, 408-assembly set, 409-first Two longitudinal cylinders, 500-annular air bag, 600-assembly rod, 601-rod-shaped body, 602-hydraulic channel, 603-conducting hole, 604-gas channel, 605-gas hose, 606-hydraulic connector, 607-gas connector, 700-connecting rod, 800-sealing plunger, 900-adjustable excavation mechanism, 901-mounting plate, 902-transmission wheel, 903-transmission belt, 904-bucket, 905-first drive motor, 906-second drive motor, 907-transverse screw, 908-sliding seat, 909-transverse guide rail, 910-third longitudinal cylinder, 911-third vertical cylinder, 912-connecting plate. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] The present invention discloses a safe and quick disposal device for tunnel arch collapse, such as Figure 1-9As shown, it includes a support mold connected to a maintenance vehicle through a posture adjustment mechanism 400, and the support mold is formed by splicing a plurality of arch templates 100, a grouting pipe 300 is installed on one or more arch templates 100, and the inlet end of the grouting pipe 300 is connected to a grouting pump, and an adjustable excavation mechanism 900 is arranged below the support mold, and the adjustable excavation mechanism 900 is connected to the posture adjustment mechanism 400. The working principle and advantage of the present invention are: the present invention sprays concrete slurry evenly onto the surrounding rock of the tunnel, thereby quickly forming a layer of concrete support structure with a certain strength, and the sprayed concrete slurry can fit closely with the surrounding rock and the support structure, and can be used to block most of the gaps on the surface of the surrounding rock, and fill most of the gaps between the support structure and the surrounding rock. According to the size of the cave opening of the landslide cavity, the present invention adopts a plurality of arch templates 100 to splice each other to form a support mold, so that the support mold can completely block the cave opening of the landslide cavity. Moreover, in the process of spraying the concrete support structure and the subsequent process of concrete filling the collapse cavity, the posture adjustment mechanism 400 is controlled to drive the grouting pipe 300 to move (swing) in the collapse cavity, ensuring that the concrete slurry is evenly sprayed on the inner wall of the collapse cavity, improving the effect of the concrete support structure molding, and ensuring that the concrete quickly fills the collapse cavity. In summary, the present invention can efficiently and reasonably deal with the collapse area in the case of arch collapse in the poor strata with developed joints, broken rock mass, and poor rock formations tending to the mountain, effectively avoiding the collapse again after the collapse site is repaired, thereby reducing the impact of the collapse on the construction period and construction safety.

[0020] As a preferred embodiment of the present invention, in order to ensure that the support mold can completely seal the lower port (opening) of the collapse cavity to prevent the concrete from flowing out from the edge of the support mold and thus affecting the integrity of the collapse cavity filling, the measures taken are as follows: Figure 2-4 As shown, the annular inflatable bag 500 is installed on the periphery of the support mold, and a gas guide hose 605 is constructed on the annular inflatable bag 500, and the gas guide hose 605 is connected to the gas guide channel 604 in the assembly rod 600 described below. When the support mold covers the lower port of the collapse cavity, and the edge of the support mold fits the inner wall of the tunnel at the lower port of the collapse cavity, the annular inflatable bag 500 is inflated, so that the annular inflatable bag 500 gradually expands and contacts the corresponding position of the inner wall of the tunnel, so that the lower port of the collapse cavity is closed at the support mold.

[0021] As a preferred embodiment of the present invention, Figure 4-7As shown, two articulated compacting mechanisms 200 are symmetrically mounted on each arch template 100, each articulated compacting mechanism 200 is connected to a posture adjustment mechanism 400, and the upper end of the grouting pipe 300 passes through the corresponding articulated compacting mechanism 200, and then extends into the landslide cavity. In the process of constructing the concrete support structure (i.e., the process of spraying the concrete slurry on the inner wall of the landslide cavity), the posture adjustment mechanism 400 is controlled to move, so that it drives the articulated compacting mechanism 200 to swing, and then drives the grouting pipe 300 to swing, so that the grouting pipe 300 sprays the concrete slurry evenly onto the inner wall of the landslide cavity. In the process of filling the concrete into the landslide cavity, the articulated compacting mechanism 200 is controlled to perform a reciprocating compacting action to achieve the purpose of vibrating the concrete, thereby increasing the density of the concrete and avoiding the occurrence of empty bags. When the concrete in the collapse cavity is fully filled, the articulated compacting mechanism 200 is controlled to perform a reciprocating compacting action so that the concrete in the collapse cavity is gradually squeezed into the joints and fissures, thereby achieving the purpose of filling the joints and fissures, thereby increasing the strength of the inner wall of the collapse cavity and making the combination of the inner wall of the collapse cavity and the concrete in the collapse cavity more stable.

[0022] As a preferred embodiment of the present invention, Figure 5-7As shown, the articulated compacting mechanism 200 includes a compacting component, which is connected to the arch template 100 in a joint manner, and the arch mold located on the same side of the support mold is connected to the posture adjustment mechanism 400 through a connecting rod 700. The compacting component of this embodiment includes a joint shell 103, a connecting tube 202, a joint knot 201, a compacting column head 205, a connecting spring 208 and a guide rod 206. Among them, the joint shell 103 is constructed on the arch template 100, and the joint shell 103 has a joint opening that penetrates the arch template 100. The joint knot 201 is coaxially constructed on the outer peripheral wall of the connecting tube 202, and the joint knot 201 is movably assembled in the joint opening. The lower end of the compacting column head 205 of this embodiment extends into the connecting tube 202, and the guide rod 206 is coaxially constructed at the lower end of the compacting column head 205, and the lower end of the guide rod 206 movably extends out of the lower end of the connecting tube 202. A driving chamber 203 is formed in the connecting tube 202, and the driving chamber 203 is located between the compacting column head 205 and the lower end of the connecting tube 202. A connecting spring 208 is arranged in the driving chamber 203, and the two ends of the connecting spring 208 are respectively connected to the compacting column head 205 and the connecting tube 202. In this embodiment, a connecting ear 204 is constructed at the lower end of the connecting tube 202, and the connecting rod 700 passes through the connecting ear 204 and is fixedly connected to the connecting ear 204. The working principle and advantage of this embodiment are: in this embodiment, by driving the connecting tube 202 to move, the joint knot 201 moves in the joint shell 103, so as to achieve the purpose of swinging the grouting pipe 300 connected to the joint compacting mechanism 200. In this embodiment, by injecting a high-pressure medium (such as high-pressure gas, hydraulic oil, etc.) into the driving chamber 203 or discharging it from the driving chamber 203, the compacting column head 205 moves along the axial direction of the connecting tube 202, thereby achieving its purpose of reciprocating vibration and compaction of concrete.

[0023] As a preferred embodiment of the present invention, Figure 7 As shown, in this embodiment, an assembly hole 207 is provided on the articulated compacting mechanism 200, and the assembly hole 207 passes through the compacting column head 205 and the guide rod 206 along the axis of the compacting column head 205. The grouting pipe 300 is assembled in the assembly hole 207, and the assembly hole 207 not assembled with the grouting pipe 300 is closed by a sealing plunger 800 to prevent concrete from being discharged from the assembly hole 207. The grouting pipes 300 of this embodiment are installed at intervals on the corresponding one or more arch templates 100. Under the drive of the posture adjustment mechanism 400, the spraying range of these grouting pipes 300 can cover the inner wall of the entire collapse cavity.

[0024] As a preferred embodiment of the present invention, Figure 6 , 7As shown, the arch template 100 includes a template body 101, a fixing block 102 is configured on the lower end surface of the middle part of the template body 101, and the assembly rod 600 passes through the fixing block 102 and is fixedly connected thereto. The assembly rod 600 includes a rod-shaped body 601, a hydraulic channel 602 and an air channel 604 are configured in the rod-shaped body 601, an air hose 605 and a plurality of hydraulic hoses 209 are configured on the rod-shaped body 601, and a hydraulic joint 606 and an air joint 607 are configured at one end of the rod-shaped body 601, and the hydraulic joint 606 and the air joint 607 are respectively connected to the hydraulic channel 602 and the air channel 604. The air guide hose 605 of this embodiment is connected to the air guide channel 604, and the air guide hose 605 is connected to the annular inflatable bag 500; one end of each hydraulic hose 209 is connected and fixed to the connecting tube 202, and the hydraulic hose 209 is connected to the driving chamber 203. A through hole 603 is opened on the rod-shaped body 601 and located at each hydraulic hose 209, and the through hole 603 connects the hydraulic channel 602 and the hydraulic hose 209. The pressurized gas enters the air guide channel 604 through the air guide joint 607, and then enters the annular inflatable bag 500 through the air guide hose 605, so that the annular inflatable bag 500 gradually expands and seals the periphery of the lower port of the collapse cavity. The hydraulic oil enters the hydraulic channel 602 through the hydraulic joint 606, and then enters each driving cavity 203 through each hydraulic hose 209, thereby driving each compaction column head 205 to gradually extend into the landslide cavity; when the hydraulic oil is discharged from the landslide cavity, under the action of the connecting spring 208, the compaction column head 205 gradually retracts from the landslide cavity, and this action is repeated to achieve the purpose of vibrating and compacting the concrete.

[0025] As a preferred embodiment of the present invention, Figure 8As shown, the posture adjustment mechanism 400 includes a first vertical cylinder 402, a first longitudinal cylinder 401, a second vertical cylinder 407, a second longitudinal cylinder 409, an assembly seat 403 and an adapter seat 404. The cylinder rod of the first vertical cylinder 402 is connected to the assembly seat 403, the cylinder rod of the first longitudinal cylinder 401 is connected to the cylinder body of the first vertical cylinder 402, and the cylinder body of the first longitudinal cylinder 401 is connected to the maintenance vehicle. One end of the assembly rod 600 is installed on the assembly seat 403, and the adapter seat 404 is connected to the cylinder body of the second vertical cylinder 407, and the assembly sleeve 408 is installed on the cylinder rod of the second vertical cylinder 407. The assembly sleeve 408 is movably sleeved on the assembly rod 600, and the cylinder body of the second longitudinal cylinder 409 is fixedly connected to the assembly rod 600, and the cylinder rod of the second longitudinal cylinder 409 is connected to the assembly sleeve 408. The adapter seat 404 is rotatably connected to two adapter arms 406 through two adapter shafts 405, and one end of each adapter arm 406 away from the adapter shaft 405 is connected to the corresponding connecting rod 700. The working principle and advantages of this embodiment are as follows: this embodiment controls the first longitudinal oil cylinder 401 to move, so that the first longitudinal oil cylinder 401 drives the support mold to move along the length direction of the tunnel through the assembly rod 600, and moves to the bottom of the collapse cavity; then, the first vertical oil cylinder 402 is controlled to move, so that the first vertical oil cylinder 402 drives the support mold to move upward in the vertical direction through the assembly rod 600, until the grouting pipe 300 on the support mold extends into the collapse cavity, at which time the concrete slurry spraying operation can be carried out; and in the process of spraying, the second vertical oil cylinder 407 and the second The longitudinal cylinder 409 is actuated, so that the two drive the adapter 404 to move vertically and longitudinally. During the movement of the adapter 404, it drives the two connecting rods 700 to open and close and move along the length direction of the tunnel through the two adapter arms 406, thereby driving the articulated compaction mechanism 200 to operate, so that the concrete slurry spraying is more sufficient and faster; after the concrete support structure is formed, the first vertical cylinder 402 is controlled to continue to drive the support mold to move upward in the vertical direction, so that the support mold closes the lower port of the collapse cavity, so as to facilitate the concrete to fill the collapse cavity and achieve the purpose of repairing the collapse area.

[0026] As a preferred embodiment of the present invention, Figure 1 , 9As shown, when the tunnel vault collapses, the collapsed rubble and the like will accumulate below the collapse cavity to form a rock accumulation body, which needs to be cleaned up to facilitate subsequent tunnel construction operations. Specifically, an adjustable excavation mechanism 900 is used to clean up the rock accumulation body in the tunnel and below the collapse cavity, and then a steel support frame is used to support the surrounding surface of the area where the collapse cavity is restored, and then the tunnel excavation operation is continued. The specific structure of the adjustable excavation mechanism 900 of this embodiment is that the adjustable excavation mechanism 900 includes a transverse guide rail 909, a transverse lead screw 907, a third vertical oil cylinder 911, a third longitudinal oil cylinder 910 and two excavation units, and the two excavation units are symmetrically arranged. Among them, each excavation unit includes a mounting plate 901, a first drive motor 905, a transmission belt 903 and two transmission wheels 902. The two transmission wheels 902 are arranged on the mounting plate 901 at intervals along the length direction of the tunnel. The two transmission wheels 902 are respectively rotatably connected to the mounting plate 901. The transmission belt 903 is transmission-connected to the two transmission wheels 902. A plurality of buckets 904 are installed on the transmission belt 903 at intervals along its extension direction. The output shaft of the first drive motor 905 is connected to one axial end of one of the transmission wheels 902, and the first drive motor 905 is installed on the mounting plate 901. In this embodiment, a sliding seat 908 is constructed at one end of the mounting plate 901 close to the maintenance vehicle. The sliding seat 908 is slidably assembled on the transverse guide rail 909. Two threaded connection parts are symmetrically constructed on the transverse lead screw 907. The threaded rotation directions of the two threaded connection parts are opposite. The transverse lead screw 907 is respectively connected to the two mounting plates 901 in reverse threads through the two threaded connection parts. One end of the transverse lead screw 907 is connected to the output shaft of the second drive motor 906, and the second drive motor 906 is installed on the transverse guide rail 909. The transverse guide rail 909 of this embodiment is connected to the cylinder rod of the third longitudinal oil cylinder 910, the cylinder rod of the third vertical oil cylinder 911 is connected to the cylinder body of the third longitudinal oil cylinder 910, and the cylinder body of the third vertical oil cylinder 911 is connected to the maintenance vehicle through the connecting plate 912. The working principle and advantage of this embodiment are: this embodiment controls the action of the first drive motor 905, so that the transmission belt 903 drives the bucket 904 thereon to excavate the rock accumulation body, thereby achieving the purpose of cleaning the rock accumulation body. And by controlling the action of the second drive motor 906, the transverse screw 907 drives the two excavation units to move closer to or away from each other, so that the two excavation units excavate the rock accumulation body from the middle to both sides, or from both sides to the middle; coordinated with the control of the action of the third longitudinal cylinder 910 and the third vertical cylinder 911, the rock accumulation body is cleaned from top to bottom and from outside to inside, thereby achieving the purpose of all-round clearing of the rock accumulation body.

[0027] The present invention also discloses a method for using the above-mentioned tunnel arch collapse safety and rapid disposal device, comprising the following steps: Step 1. According to the size of the arch collapse area, select a plurality of arch templates 100 and splice them together to form a support mold; Step 2: Drive the maintenance vehicle in the tunnel until the maintenance vehicle reaches the location where the arch collapses; Step 3. A grouting pipe 300 is installed on one or more arched templates 100, and the inlet end of the grouting pipe 300 is connected to a grouting pump; Step 4. Control the posture adjustment mechanism 400 so that the grouting pipe 300 extends into the collapse cavity of the arch collapse; then start the grouting pump to eject the concrete slurry through the grouting pipe 300 and spray it on the inner wall of the collapse cavity, and at the same time control the posture adjustment mechanism 400 to move, and stop the grouting pump after the concrete slurry covers the inner wall of the collapse cavity; Step 5. After the concrete slurry on the inner wall of the collapse cavity solidifies, the posture adjustment mechanism 400 is controlled to drive the support mold to close the lower port of the collapse cavity; Step 6. Start the grouting pump and gradually inject concrete into the collapse cavity until it is full, then remove the grouting pipe 300; Step 7. After the concrete in the collapse cavity is completely solidified, the posture adjustment mechanism 400 is controlled to drive the support mold to disengage.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A safe and rapid disposal device for tunnel arch collapse, characterized in that: It includes a supporting mold connected to a maintenance vehicle through a posture adjustment mechanism, wherein the supporting mold is formed by splicing a plurality of arch templates together, a grouting pipe is installed on one or more arch templates, the inlet end of the grouting pipe is connected to a grouting pump, and an adjustable excavation mechanism is arranged below the supporting mold, and the adjustable excavation mechanism is connected to the posture adjustment mechanism.

2. A safe and quick handling device for tunnel arch collapse according to claim 1, characterized in that: An annular air bag is installed on the peripheral edge of the supporting mold. When the supporting mold is fitted with the lower end of the collapse cavity, the inflated annular air bag contacts the corresponding position of the inner wall of the tunnel.

3. A safe and quick handling device for tunnel arch collapse according to claim 1, characterized in that: Two articulated compacting mechanisms are symmetrically mounted on each of the arched templates, each of the articulated compacting mechanisms is connected to a posture adjustment mechanism, and one end of a grouting pipe passes through the corresponding articulated compacting mechanism and extends into the collapse cavity.

4. A safe and quick handling device for tunnel arch collapse according to claim 3, characterized in that: The articulated compacting mechanism comprises a compacting component connected to the arched template in an articulated manner, and the arched molds located on the same side of the supporting mold are connected to the posture adjustment mechanism through a connecting rod.

5. A safe and quick handling device for tunnel arch collapse according to claim 4, characterized in that: The sealing component includes a joint shell, a connecting tube and a sealing column head. The joint shell is constructed on the arch template. The joint shell has a joint opening that penetrates the arch template. A joint knot is coaxially constructed on the outer peripheral wall of the connecting tube. The joint knot is movably assembled in the joint opening. The lower end of the sealing column head extends into the connecting tube. A guide rod is coaxially constructed at the lower end of the sealing column head. The guide rod movably extends out of the lower end of the connecting tube. A driving cavity is formed in the connecting tube and between the sealing column head and the lower end of the connecting tube. A connecting spring is arranged in the driving cavity. The two ends of the connecting spring are respectively connected to the sealing column head and the connecting tube.

6. A safe and quick handling device for tunnel arch collapse according to claim 5, characterized in that: The arch template includes a template body, a fixed block is constructed on the lower end surface of the middle part of the template body, an assembly rod passes through the fixed block and is fixedly connected to the fixed block, a hydraulic hose connected to the driving cavity is constructed on each connecting cylinder, a hydraulic channel is constructed in the assembly rod, and the hydraulic channel is connected to the corresponding hydraulic hose through a conducting hole opened on the assembly rod.

7. A safe and quick handling device for tunnel arch collapse according to claim 6, characterized in that: The posture adjustment mechanism includes a first vertical cylinder and an adapter seat, the first vertical cylinder is connected to the assembly seat, the first vertical cylinder is connected to the first longitudinal cylinder, one end of the assembly rod is installed on the assembly seat, the second vertical cylinder is connected to the adapter seat, an assembly set is installed on the cylinder rod of the second vertical cylinder, the assembly set is movably sleeved on the assembly rod, and one end of the second longitudinal cylinder is fixedly connected to the assembly rod, the other end of the second longitudinal cylinder is connected to the assembly set, the adapter seat is rotatably connected to two adapter arms through two adapter shafts, and one end of each adapter arm away from the adapter shaft is connected to the corresponding connecting rod.

8. The safe and rapid disposal device for tunnel arch collapse according to claim 5, characterized in that: The assembly hole passes through the compacting column head and the guide rod along the axis of the compacting column head, the grouting pipe is assembled in the assembly hole, and the assembly hole not assembled with the grouting pipe is sealed by a sealing plunger.

9. A safe and quick handling device for tunnel arch collapse according to claim 1, characterized in that: The adjustable tunneling mechanism includes two symmetrically arranged mounting plates, and two transmission wheels are connected to each mounting plate for rotation at intervals along the length direction of the tunnel, and a transmission belt is connected to the two transmission wheels for transmission, and a plurality of buckets are installed on the transmission belt at intervals along its extension direction, and one axial end of a transmission wheel is connected to the output shaft of the first drive motor; a sliding seat is constructed at one end of the mounting plate close to the maintenance vehicle, and the sliding seat is slidably assembled on the transverse guide rail, the transverse lead screw is reversely threadedly connected to the two mounting plates, one end of the transverse lead screw is connected to the output shaft of the second drive motor, the transverse guide rail is connected to the third longitudinal oil cylinder, the third vertical oil cylinder is connected to the third longitudinal oil cylinder, and the third vertical oil cylinder is connected to the maintenance vehicle via a connecting plate.

10. A method for using the safe and rapid treatment device for tunnel arch collapse according to any one of claims 1 to 9, characterized in that: The steps include: Step 1. According to the size of the arch collapse area, select multiple arch templates and splice them together to form a support mold; Step 2: Drive the maintenance vehicle in the tunnel until the maintenance vehicle reaches the location where the arch collapses; Step 3. Install a grouting pipe on one or more arched templates, and connect the inlet end of the grouting pipe to a grouting pump; Step 4. Control the posture adjustment mechanism so that the grouting pipe extends into the collapse cavity of the arch collapse; then start the grouting pump to eject the concrete slurry through the grouting pipe and spray it on the inner wall of the collapse cavity, and at the same time control the posture adjustment mechanism to stop the grouting pump after the concrete slurry covers the inner wall of the collapse cavity; Step 5. After the concrete slurry on the inner wall of the collapse cavity solidifies, the posture adjustment mechanism is controlled to drive the support mold to close the lower port of the collapse cavity; Step 6. Start the grouting pump and gradually inject concrete into the collapse cavity until it is full, then remove the grouting pipe; Step 7. After the concrete in the collapse cavity is completely solidified, the posture adjustment mechanism is controlled to drive the support mold to disengage.

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