Tunnel lining high-pressure water jet cutting arch replacement equipment and lining rapid arch replacement cutting method

Abstract

The present invention discloses a tunnel lining high-pressure water jet cutting and arch changing equipment, including a mobile driving operation platform and a construction platform, the lower end of each main telescopic arm is hinged on the construction platform through a main shaft, the upper end of the main telescopic arm in the middle is hingedly installed with a support bracket for resting on the cut lining block during cutting, and the main telescopic arm is also equipped with a displacement slider, a telescopic rod is installed on one side of the displacement slider, and a high-pressure water jet cutter head is hingedly installed on the end of the telescopic rod, and the main telescopic arms on both sides are each equipped with a telescopic arm group, which is surrounded by an A telescopic arm, a B telescopic arm and a C telescopic arm, and the two C telescopic arms and the two transverse telescopic arms together form a quadrilateral frame with adjustable area. At the same time, the present invention also discloses a lining rapid arch changing cutting method to achieve the purpose of reducing pollution, precise operation, safe and efficient operation.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction equipment, and in particular relates to cutting equipment used for tunnel lining arch replacement operations, and a cutting method thereof. Background Art

[0002] When the tunnel lining is squeezed and deformed too much due to the complex surrounding rock pressure and exceeds the tunnel design limit, it is necessary to remove and replace the lining in the area where the deformation is too large and exceeds the limit. The commonly used arch replacement methods currently include blasting or manual pneumatic picks and blasting hammers. The blasting method is not easy to control the blasting energy and blasting range, and it is easy to cause excessive disturbance to the surrounding rock behind the lining, destroy the stability of the surrounding rock, or cause excessive blasting and incomplete blasting demolition; the use of pneumatic picks or blasting hammers is manual work, with low construction efficiency and a large amount of dust and noise pollution. The above construction methods will also pose a greater safety risk to the operators. Summary of the invention

[0003] In view of the defects of the currently commonly used tunnel arch replacement construction method, the present invention aims to use high-pressure water jet cutting to replace traditional blasting, pneumatic picks and blasting hammers to cut, dismantle and replace arches, thereby achieving the purpose of reducing pollution and ensuring safe and efficient operations.

[0004] To this end, the technical solution adopted by the present invention is: a tunnel lining high-pressure water jet cutting and arch replacement equipment, including a mobile driving operation platform and a construction pedestal, the construction pedestal is installed on the mobile driving operation platform, three main telescopic arms are arranged on the construction pedestal at intervals on the left and right, the lower end of each main telescopic arm is hinged on the construction pedestal through a main shaft, the upper end of the main telescopic arm in the middle is hingedly installed with a support bracket for supporting the cut lining block during cutting, the main telescopic arm in the middle is also provided with a displacement slider, a telescopic rod is installed on one side of the displacement slider, a high-pressure water jet cutter head is hingedly installed at the end of the telescopic rod, and the telescopic rod is used to adjust the high-pressure water jet cutter head to move up and down and left and right, and the high-pressure water jet cutter head is equipped with a fluorescent sensing controller; the main telescopic arms on both sides are each equipped with a A telescopic arm group, wherein the telescopic arm group is an area-adjustable tripod formed by an A telescopic arm, a B telescopic arm and a C telescopic arm, wherein the lower ends of the A telescopic arm and the B telescopic arm are respectively hinged to the upper end of the main telescopic arm, and the two ends of the C telescopic arm are respectively hinged to the upper ends of the A telescopic arm and the B telescopic arm; the telescopic arm groups on the left and right sides are connected by two transverse telescopic arms, wherein the two ends of one transverse telescopic arm are respectively hinged to one end of the C telescopic arms on both sides, and the two ends of the other transverse telescopic arm are respectively hinged to the other end of the C telescopic arms on both sides, so that the two C telescopic arms and the two transverse telescopic arms together form an area-adjustable quadrilateral frame, and the quadrilateral frame can be adjusted to a larger area for supporting the peripheral lining outside the cut area during cutting operations, and can also be adjusted to a smaller area for lifting the cut lining after the cutting is completed.

[0005] As a preferred embodiment of the above scheme, the mobile driving operation platform is also provided with a driving cab and an operation platform.

[0006] At the same time, the present invention also discloses a lining rapid arch replacement cutting method, comprising the following steps:

[0007] The first step is to use fluorescent paint to mark the lining blocks to be cut in the tunnel arch replacement operation area;

[0008] The second step is to drive the tunnel lining high-pressure water jet cutting and arch replacement equipment described in claim 1 to the lower side of the tunnel arch replacement area;

[0009] The third step is to operate the tunnel lining high-pressure water jet cutting and arch replacement equipment, control the main telescopic arm, A telescopic arm, B telescopic arm, C telescopic arm and two lateral telescopic arms on both sides to rotate and telescope at the same time, and make precise adjustments up and down, left and right, front and back of the parallelogram to form an encirclement larger than the fluorescent marking area, which is used to rest on the peripheral lining outside the cutting area to fix the peripheral lining;

[0010] The fourth step is to operate and control the main telescopic arm and the support bracket in the middle to rotate and telescope at the same time, ensuring that the support bracket rests on the cut lining block;

[0011] The fifth step is to operate the displacement slider to slide and the telescopic rod to extend and retract, so that the high-pressure water jet cutter head moves up and down and left and right to approach the lining of the arch-changing area. The fluorescent sensor controller attached to the high-pressure water jet cutter head receives the fluorescent paint signal of the arch-changing area boundary mark, controls the displacement of the high-pressure water jet cutter head to perform the arch-changing operation, and the high-pressure water jet cutter head is equipped with a pressure sensor. When the reaction water pressure sensed by the high-pressure water jet cutter head drops suddenly, the cutter head is controlled to move and cut;

[0012] Step 6. After the cutting is completed, retract the main telescopic arm in the middle, retract the high-pressure water jet cutter head, adjust the main telescopic arm, A telescopic arm, B telescopic arm, C telescopic arm, lateral telescopic arm and supporting bracket to lift the cut lining block and slowly lower it.

[0013] More preferably, in the fifth step, when the arch changing area is too large, pre-cutting is performed first, and the arch changing area is cross-cut or tic-tac-toe-cut to be divided into smaller pieces.

[0014] More preferably, in the fifth step, after the cutting of the main structure is completed, a high-pressure water jet cutter head is used to perform additional precise cutting on the incompletely cut areas.

[0015] The beneficial effects of the present invention are as follows: the high-pressure water jet cutter head is loaded onto a multi-arm mobile device, and the area-adjustable tripod telescopic arm group formed on the left and right sides is connected and combined with the lateral telescopic arm to form a quadrilateral frame with an adjustable area. The stability of the triangle and the all-round precise adjustment of the multi-arm structure are utilized to ensure that the quadrilateral frame formed can match the tunnel lining arch replacement area at any position. The quadrilateral frame can be adjusted to a larger area to support the peripheral lining outside the cut area during cutting operations, and can also be adjusted to a smaller area to lift the cut lining block and slowly put it down after the cutting is completed; a support bracket is provided to support the cut lining block during cutting, so that the cut lining block and the peripheral lining outside the cut area are supported and supported respectively, and the vibration generated during the water jet cutting process is prevented from being transmitted to cause the arch replacement area to expand, which is convenient for cutting operations; after the cutting is completed, the reduced quadrilateral frame and the support bracket can be used to jointly lift the cut lining block and slowly put it down, so as to prevent the cut lining block from falling directly and posing a safety hazard. The high-pressure water jet cutter head and the support bracket share the same main telescopic arm. The high-pressure water jet cutter head can move up, down, left, and right to approach the lining of the area where the arch needs to be replaced by sliding the slider and rotating the telescopic rod. During the specific construction, fluorescent paint markings and fluorescent sensor controllers on the high-pressure water jet cutter heads are used to automatically control the high-pressure water jet cutter heads to accurately cut, remove and replace the arches, and reuse water resources to achieve the purpose of reducing pollution, precise operation, and safe and efficient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a simple schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the main part of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0019] Combination Figure 1 — Figure 2 As shown, a tunnel lining high-pressure water jet cutting and arch replacement equipment is mainly composed of a mobile driving operation platform 1, a construction base 2, a main telescopic arm 3, a supporting bracket 4, a high-pressure water jet cutter head 5, an A telescopic arm 6, a B telescopic arm 7, a C telescopic arm 8, a transverse telescopic arm 9, a telescopic rod 10, a displacement slider 11, a cab 12 and an operation platform 13.

[0020] The mobile driving operation platform 1 is used to realize the installation and movement of the entire tunnel lining high-pressure water jet cutting arch replacement equipment. The construction platform 2 is installed on the mobile driving operation platform 1 and is used for the main part of the tunnel lining high-pressure water jet cutting arch replacement equipment.

[0021] Three main telescopic arms 3 are arranged at intervals on the left and right sides of the construction platform 2. The lower end of each main telescopic arm 3 is hinged to the construction platform 2 through a main axis a. Each main telescopic arm 3 can rotate around the main axis a and can be extended and shortened.

[0022] The upper end of the main telescopic arm 3 in the middle is hingedly mounted with a support bracket 4 through a bearing shaft, and the support bracket 4 is used to rest against the lining block to be cut during cutting. The main telescopic arm 3 is also equipped with a displacement slider 11, and a telescopic rod 10 is installed on one side of the displacement slider 11, and a high-pressure water jet cutter head 5 is hingedly mounted on the end of the telescopic rod 10. The displacement slider 11 can slide up and down, and the telescopic rod 10 can move telescopically, and the telescopic rod 10 is used to adjust the high-pressure water jet cutter head 5 to move up and down, left and right. The high-pressure water jet cutter head 5 is equipped with a fluorescent sensor controller.

[0023] The main telescopic arms 3 on both sides are each equipped with a telescopic arm group, which is an adjustable-area tripod surrounded by the A telescopic arm 6, the B telescopic arm 7 and the C telescopic arm 8. The lower ends of the A telescopic arm 6 and the B telescopic arm 7 are respectively hinged to the upper ends of the main telescopic arm 3, and the two ends of the C telescopic arm 8 are respectively hinged to the upper ends of the A telescopic arm 6 and the B telescopic arm 7. The telescopic arm groups on the left and right sides are connected by two transverse telescopic arms 9, wherein the two ends of one transverse telescopic arm 9 are respectively hinged to one end of the C telescopic arm 8 on both sides, and the two ends of the other transverse telescopic arm 9 are respectively hinged to the other end of the C telescopic arm 8 on both sides, so that the two C telescopic arms 8 and the two transverse telescopic arms 9 together form an adjustable-area quadrilateral frame, which can be adjusted to a larger area to support the peripheral lining outside the cut area during the cutting operation, and can be adjusted to a smaller area to lift the cut lining block and slowly put it down after the cutting is completed.

[0024] To achieve the rotation of the hinge point, each hinge point is individually equipped with a telescopic cylinder (not shown in the figure), and the rotation around the hinge point is achieved by pushing and pulling the telescopic cylinder. A bearing shaft is provided on each hinge joint, which is a commonly used mechanical structure and will not be described here.

[0025] In addition, a cab 12 and an operating platform 13 are also provided on the mobile driving operating platform 1 .

[0026] A lining rapid arch replacement cutting method comprises the following steps:

[0027] The first step is to mark the lining blocks to be cut with fluorescent paint in the tunnel arch replacement operation area.

[0028] The second step is to drive the above-mentioned tunnel lining high-pressure water jet cutting arch replacement equipment to the lower side of the tunnel arch replacement area.

[0029] The third step is to operate the tunnel lining high-pressure water jet cutting and arch replacement equipment to control the main telescopic arm 3, A telescopic arm 6, B telescopic arm 7, C telescopic arm 8 and two lateral telescopic arms 9 on both sides to rotate and telescope at the same time, and make precise adjustments to the up, down, left, right, front and back of the parallelogram to form an encirclement larger than the fluorescent marked area, which is used to rest on the peripheral lining outside the cut area to fix the peripheral lining.

[0030] The fourth step is to operate and control the main telescopic arm 3 and the supporting bracket 4 located in the middle to rotate and telescope at the same time, so as to ensure that the supporting bracket 4 is against the cut lining block.

[0031] The fifth step is to operate and control the displacement slider 11 to slide and the telescopic rod 10 to extend and retract, so that the high-pressure water jet cutter head 5 moves up and down, left and right to approach the lining of the area where the arch needs to be replaced. The fluorescent sensor controller attached to the high-pressure water jet cutter head 5 receives the fluorescent paint signal of the boundary mark of the arch replacement area, controls the displacement of the high-pressure water jet cutter head 5 to perform the cutting and arch replacement operation, and at the same time, the high-pressure water jet cutter head 5 is equipped with a pressure sensor. When the reaction water pressure sensed by the high-pressure water jet cutter head 5 drops suddenly, the cutter head is controlled to move and cut, and the high-pressure water jet cutter head 5 performs the cutting operation along the fluorescent paint marking line.

[0032] Preferably, in the fifth step, when the arch change area is too large, pre-cutting is performed first, and the arch change area is cross-cut or tic-tac-toe-cut to break it into smaller pieces.

[0033] In addition, in the fifth step, after the cutting of the main structure is completed, the high-pressure water jet cutter head 5 is used to perform additional precise cutting on the incompletely cut areas.

[0034] Step 6. After the cutting is completed, retract the main telescopic arm 3 in the middle, retract the high-pressure water jet cutter head 5, adjust the main telescopic arm 3, A telescopic arm 6, B telescopic arm 7, C telescopic arm 8, lateral telescopic arm 9 and supporting bracket 4, which are used together to lift the cut lining block and slowly lower it.

Claims

1. A tunnel lining high-pressure water jet cutting and arch replacement equipment, characterized in that: The invention comprises a mobile driving operation platform (1) and a construction platform (2), wherein the construction platform (2) is installed on the mobile driving operation platform (1), and three main telescopic arms (3) are arranged on the construction platform (2) at intervals on the left and right, and the lower end of each main telescopic arm (3) is hingedly connected to the construction platform (2) through a main shaft (a), and the upper end of the main telescopic arm (3) located in the middle is hingedly installed with a support bracket (4) for supporting against the lining block to be cut during cutting, and the main telescopic arm (3) located in the middle is also provided with a displacement slider (11), and a telescopic rod (10) is installed on one side of the displacement slider (11), and a high-pressure water jet cutter head (5) is hingedly installed at the end of the telescopic rod (10), and the high-pressure water jet cutter head (5) is used to adjust the up and down and left and right movement of the high-pressure water jet cutter head (5) through the telescopic rod (10), and the high-pressure water jet cutter head (5) is equipped with a fluorescent sensor controller; the main telescopic arms (3) located on both sides are each equipped with a telescopic arm group, and the telescopic arms The group is an area-adjustable tripod formed by an A telescopic arm (6), a B telescopic arm (7) and a C telescopic arm (8), wherein the lower ends of the A telescopic arm (6) and the B telescopic arm (7) are respectively hinged to the upper ends of the main telescopic arm (3), and the two ends of the C telescopic arm (8) are respectively hinged to the upper ends of the A telescopic arm (6) and the B telescopic arm (7); the telescopic arm groups on the left and right sides are connected by two transverse telescopic arms (9), wherein the two ends of one transverse telescopic arm (9) are respectively hinged to one end of the C telescopic arms (8) on both sides, and the two ends of the other transverse telescopic arm (9) are respectively hinged to the other ends of the C telescopic arms (8) on both sides, so that the two C telescopic arms (8) and the two transverse telescopic arms (9) together form an area-adjustable quadrilateral frame, and the quadrilateral frame can be adjusted to a larger area for supporting the peripheral lining outside the cut area during cutting operation, and can be adjusted to a smaller area for lifting the cut lining block and slowly lowering it after cutting is completed.

2. The tunnel lining high-pressure water jet cutting and arch replacement equipment according to claim 1, characterized in that: The mobile driving operation platform (1) is also provided with a driving cab (12) and an operation platform (13).

3. A lining rapid arch-changing cutting method, characterized in that: The following steps are involved: The first step is to use fluorescent paint to mark the lining blocks to be cut in the tunnel arch replacement operation area; The second step is to drive the tunnel lining high-pressure water jet cutting and arch replacement equipment described in claim 1 to the lower side of the tunnel arch replacement area; The third step is to operate the tunnel lining high-pressure water jet cutting and arch replacement equipment to control the main telescopic arm (3), A telescopic arm (6), B telescopic arm (7), C telescopic arm (8) and two transverse telescopic arms (9) on both sides to rotate and telescope at the same time, and perform precise fine adjustment of the parallelogram up and down, left and right, front and back, to form an encirclement larger than the fluorescent marking area, which is used to abut against the peripheral lining outside the cutting area to fix the peripheral lining; The fourth step is to operate and control the main telescopic arm (3) and the supporting bracket (4) located in the middle to rotate and telescope at the same time, so as to ensure that the supporting bracket (4) is against the cut lining block; The fifth step is to operate and control the displacement slider (11) to slide and the telescopic rod (10) to extend and retract, so that the high-pressure water jet cutter head (5) moves up and down and left and right to approach the lining of the arch-changing area. The fluorescent sensor controller attached to the high-pressure water jet cutter head (5) receives the fluorescent paint signal of the arch-changing area boundary mark, controls the displacement of the high-pressure water jet cutter head (5) to perform the cutting and arch-changing operation, and at the same time, the high-pressure water jet cutter head (5) is equipped with a pressure sensor, and when the reaction water pressure sensed by the high-pressure water jet cutter head (5) suddenly drops, controls the cutter head to move and cut; Step 6. After the cutting is completed, the main telescopic arm (3) in the middle is retracted, the high-pressure water jet cutter head (5) is retracted, and the main telescopic arm (3), the A telescopic arm (6), the B telescopic arm (7), the C telescopic arm (8), the transverse telescopic arm (9) and the supporting bracket (4) are adjusted to lift the cut lining block and slowly lower it.

4. The lining rapid arch replacement cutting method according to claim 3 is characterized in that: In the fifth step, when the arch change area is too large, pre-cutting is performed first, and the arch change area is cross-cut or tic-tac-toe-cut to break it into smaller pieces.

5. The lining rapid arch replacement cutting method according to claim 3 is characterized in that: In the fifth step, after the cutting of the main structure is completed, the high-pressure water jet cutter head (5) is used to perform additional precise cutting on the incompletely cut areas.

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