CN110065167B - Tunnel secondary lining concrete and rock cutting mechanism, cutting equipment and cutting method - Google Patents
Tunnel secondary lining concrete and rock cutting mechanism, cutting equipment and cutting method Download PDFInfo
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- CN110065167B CN110065167B CN201910329575.0A CN201910329575A CN110065167B CN 110065167 B CN110065167 B CN 110065167B CN 201910329575 A CN201910329575 A CN 201910329575A CN 110065167 B CN110065167 B CN 110065167B
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- cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel secondary lining concrete and rock cutting mechanism which comprises a large arm, a telescopic arm and a cutting arm, wherein the front end of the large arm is hinged with the rear end of the telescopic arm through a universal joint, so that the telescopic arm can swing up and down and back and forth relative to the large arm, the front end of the telescopic arm is connected with the rear end of the cutting arm through a slewing bearing, a cutting disc saw is installed at the front end of the cutting arm, and the cutting disc saw is provided with a depth control wheel for controlling the cutting depth. The invention also provides a device for cutting the tunnel secondary lining concrete and the rocks, wherein the tunnel secondary lining concrete and the rocks cutting mechanism are arranged on a modified excavator, or a crane, or a drill jumbo, or a drilling machine through a large arm. The invention also provides a method for cutting the tunnel secondary lining concrete by using the tunnel secondary lining concrete and rock cutting equipment. The cutting in 360 arbitrary space position can be realized, the demolition efficiency of the tunnel secondary lining concrete or rock is effectively improved, and the construction cost is saved.
Description
Technical Field
The invention relates to special equipment for cutting concrete or rock, in particular to a tunnel secondary lining concrete and rock cutting mechanism, cutting equipment comprising the tunnel secondary lining concrete and rock cutting mechanism and a method for cutting the tunnel secondary lining concrete by the cutting equipment.
Background
The two-lining concrete of the high-speed railway tunnel has the defects of void, insufficient thickness and the like of the two-lining concrete of the tunnel due to various reasons in the construction process, and the operation safety of the high-speed railway is seriously influenced. In order to ensure the operation safety of the tunnel, unqualified tunnel secondary lining concrete must be dismantled and rebuilt, the existing tunnel secondary lining concrete renovation project uses a conventional breaking hammer or blasting to carry out dismantling operation, the dismantling efficiency is low, the cost is high, and the difficulty of the secondary lining concrete backfilling operation is increased due to the irregularity of the breaking or blasting treatment.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a cutting mechanism which can effectively improve the construction efficiency of removing the secondary lining concrete or rock in the tunnel and save the construction cost, and the cutting mechanism is arranged on a modified excavator, a crane, a rock drilling trolley or a drilling machine and can realize the cutting in any space direction of 360 degrees.
Therefore, the first technical scheme adopted by the invention is as follows: the utility model provides a two lining concrete in tunnel and rock cutting mechanism, includes big arm, flexible arm and cutting arm, the front end of big arm passes through universal joint with the rear end of flexible arm and articulates together for flexible arm can big arm luffing motion and swing back and forth relatively, the front end of flexible arm is passed through slewing bearing with the rear end of cutting arm and is connected, cutting circular saw is installed to the front end of cutting arm, cutting circular saw is equipped with the degree of depth control wheel and is used for controlling the cutting depth.
The second technical scheme adopted by the invention is as follows: the utility model provides a two lining concrete in tunnel and rock cutting mechanism, includes big arm, middle arm and flexible arm, the front end of big arm passes through universal joint articulated being in the same place with the rear end of middle arm for middle arm can big arm luffing motion and swing back and forth relatively, the front end of middle arm is passed through slewing bearing with the rear end of flexible arm and is connected, cutting circular saw is installed to the front end of flexible arm, cutting circular saw is equipped with the degree of depth control wheel and is used for controlling the cutting depth.
As the optimization of the tunnel secondary lining concrete and rock cutting mechanism, the telescopic cylinder is arranged in the telescopic arm, and two-stage telescopic can be realized by adopting a three-section structure.
The invention also provides a tunnel secondary lining concrete and rock cutting device comprising the tunnel secondary lining concrete and rock cutting mechanism, and further comprises a modified excavator, or crane, or rock drilling trolley, or drilling machine, wherein the modified excavator, or crane, or rock drilling trolley, or drilling machine refers to an excavator, or crane, or rock drilling trolley, or drilling machine which is used for dismounting the front end working mechanism, and the tunnel secondary lining concrete and rock cutting mechanism is arranged on the modified excavator, or crane, or rock drilling trolley, or drilling machine through a large arm and is used for replacing the front end working mechanism of the excavator, or crane, or rock drilling trolley, or drilling machine.
Preferably, the tunnel secondary lining concrete and rock cutting equipment is further provided with a high-pressure spraying system and a water tank for dust removal, or a dust collector for dust removal.
Preferably, the tunnel secondary lining concrete and rock cutting equipment is also provided with a cutting path plan, the size of the section of the tunnel is determined through laser scanning, and the cutting path is intelligently planned; a video camera is additionally arranged, and visual identification is carried out on the cutting track; the posture sensing of the whole vehicle is additionally arranged, so that the stability of the whole vehicle is ensured, and the cutting stability is improved; the health perception is additionally arranged, and the hydraulic oil pump and the oil circuit are monitored in real time; the intelligent system senses the problem and then automatically stops, so that safe cutting is ensured.
The invention also provides a method for cutting the tunnel secondary lining concrete by using the tunnel secondary lining concrete and rock cutting equipment, which comprises the following steps:
firstly, after the concrete and rock cutting equipment for the second lining of the tunnel enters the tunnel, the equipment must be reliably stopped;
secondly, performing annular cutting on the second lining concrete of the tunnel along the extending direction of the tunnel, performing longitudinal cutting after the annular cutting is finished, and performing at least three times of through longitudinal cutting between every two annular cutting lines, so that the second lining concrete of the tunnel is divided into at least four second lining concrete blocks between every two annular cutting lines;
and thirdly, carrying out the last longitudinal cutting below the longitudinal cutting line closest to the ground so as to divide a small piece of the second-lining concrete, and adopting micro blasting to break the small piece of the second-lining concrete, wherein all the small pieces of the second-lining concrete naturally fall off after being unsupported.
As a preferable example of the method for cutting the second lining concrete in the tunnel, in the second step, five longitudinal cuts are made between every two circumferential cutting lines, so that the second lining concrete in the tunnel is divided into six second lining concrete blocks between every two circumferential cutting lines; in a third step, the last longitudinal cut is made 20cm below the longitudinal cut line closest to the ground.
The invention has the beneficial effects that: the cutting circular saw can realize the cutting in 360 arbitrary spatial directions, and the cutting circular saw is equipped with the degree of depth control wheel and is used for controlling the cutting depth, adjusts the degree of depth control wheel according to the thickness of two different lining concrete or rocks, can satisfy the cutting requirement of single, double-line tunnel vault, side wall, can realize the tunnel and vertically cut with the hoop. When the method is used for cutting the secondary lining concrete of the tunnel, the secondary lining concrete of the tunnel in a certain length range is cut in blocks by adopting a mode of firstly cutting in the annular direction and then cutting in the longitudinal direction, and then a mode of crushing small blocks and naturally falling is combined, so that the explosive cost is reduced, the secondary lining concrete which is not in accordance with the requirement can be guaranteed to be removed, the construction efficiency is high, and the construction cost is low. The invention can be used for cutting the tunnel secondary lining concrete and rock.
Drawings
Figure 1 shows a first form of construction of a tunnel secondary lining concrete and rock cutting mechanism.
Figure 2 shows a second form of construction of the tunnel secondary lining concrete and rock cutting mechanism.
Figure 3 is a schematic representation of a cut line for concrete lining the tunnel.
Fig. 4 shows a state in which the tunnel secondary lining concrete and rock cutting apparatus performs circumferential cutting in the tunnel.
Fig. 5 shows a tunnel lining concrete and rock cutting apparatus in a longitudinal cut (top cut) in a tunnel.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 shows a tunnel secondary lining concrete and rock cutting mechanism, which mainly comprises a large arm 1, a telescopic arm 2, a cutting arm 3, a cutting circular saw 4, a universal joint 5, a slewing bearing 6 and a depth control wheel 7. The front end of the large arm 1 is hinged with the rear end of the telescopic arm 2 through a universal joint 5, so that the telescopic arm 2 can swing up and down and back and forth relative to the large arm 1. The front end of the telescopic boom 2 is connected with the rear end of the cutting boom 3 through a slewing bearing 6, so that the cutting boom 3 can perform slewing motion relative to the telescopic boom 2. The cutting arm 3 has a cutting circular saw 4 mounted at its front end, and the cutting circular saw 4 is provided with a depth control wheel 7 for controlling the cutting depth. The cutting depth is determined according to the thickness of the secondary lining concrete, and the cutting depth can be adjusted.
Fig. 2 shows a tunnel secondary lining concrete and rock cutting mechanism with another structure form, which mainly comprises a large arm 1, a telescopic arm 2, a cutting circular saw 4, a universal joint 5, a slewing bearing 6, a depth control wheel 7 and a middle arm 8.
The front end of the large arm 1 is hinged with the rear end of the middle arm 8 through the universal joint 5, so that the middle arm 8 can swing up and down and back and forth relative to the large arm 1. The front end of the intermediate arm 8 is connected with the rear end of the telescopic arm 2 through a slewing bearing 6, so that the telescopic arm 2 can perform slewing motion relative to the intermediate arm 8. The front end of the telescopic arm 2 is mounted with a cutting circular saw 4, and the cutting circular saw 4 is equipped with a depth control wheel 7 for controlling the cutting depth.
The boom 1 is used to mount the tunnel secondary lining concrete and rock cutting mechanism to a retrofitted cantilevered apparatus. Cantilevered equipment includes excavators, cranes, drill jumpers, drilling rigs, and the like.
The slewing bearing 6 is driven by a hydraulic motor and decelerated by a deceleration mechanism, and the driving mechanism of the slewing bearing 6 is not limited to the hydraulic motor, and may be driven by an electric motor, an oil cylinder, or the like. The cutting circular saw 8 is driven by a hydraulic motor (not shown) alone, or by an electric motor or an oil cylinder.
The telescopic oil cylinder is arranged in the telescopic arm 3, two-stage telescopic can be realized by adopting a three-section structure, and the telescopic range of the telescopic arm 3 is preferably 1.8-3.6 meters.
With reference to fig. 1-2 and 4-5, the tunnel secondary lining concrete and rock cutting equipment comprises a modified excavator, or crane, or rock drilling trolley, or drilling machine, in addition to the tunnel secondary lining concrete and rock cutting mechanism. The modified excavator, crane, rock drilling trolley or drilling machine is used as a chassis of the tunnel secondary lining concrete and rock cutting mechanism, and refers to the excavator, crane, rock drilling trolley or drilling machine which unloads the front end working mechanism. The tunnel secondary lining concrete and rock cutting mechanism is arranged on a modified excavator, or a crane, or a rock drilling trolley, or a drilling machine through the large arm 1 and is used for replacing a front end working mechanism of the excavator, or the crane, or the rock drilling trolley, or the drilling machine. The existing cantilever type equipment is used for modification, the research and development cost is low, the research and development period is short, the chassis performance is reliable, and the device can be modified on an excavator, a crane, a drill jumbo or a drilling machine, and is very convenient.
Preferably, the tunnel secondary lining concrete and rock cutting apparatus is further provided with a high pressure spray system and a water tank for dust removal, or a dust collector for dust removal. Furthermore, a cutting path planning is also provided, the size of the cross section of the tunnel is determined through laser scanning, and the cutting path is intelligently planned; a video camera is additionally arranged, and visual identification is carried out on the cutting track; the posture sensing of the whole vehicle is additionally arranged, so that the stability of the whole vehicle is ensured, and the cutting stability is improved; the health perception is additionally arranged, and the hydraulic oil pump and the oil circuit are monitored in real time; the intelligent system senses the problem and then automatically stops, so that safe cutting is ensured. And is also provided with an overload protection and remote control system, a centralized lubrication system and the like.
A method for cutting tunnel secondary lining concrete by using the cutting equipment comprises the following steps:
in the first step, after the tunnel second lining concrete and rock cutting equipment enters the tunnel, the equipment must be reliably stopped and stabilized.
And secondly, performing annular cutting on the second lining concrete of the tunnel along the extending direction of the tunnel, performing longitudinal cutting after the annular cutting is finished, and performing at least three times of through longitudinal cutting between every two annular cutting lines, so that the second lining concrete of the tunnel is divided into at least four second lining concrete blocks between every two annular cutting lines. Five longitudinal cuts are made between every two circumferential cutting lines 9, as shown in fig. 3, for a total of five longitudinal cutting lines 10, and the tunnel secondary lining concrete is divided into six secondary lining concrete blocks between every two circumferential cutting lines 9, as shown in fig. 3-5. Longitudinal cuts include a flat cut, a side cut and a top cut (as shown in fig. 5).
And thirdly, carrying out the last longitudinal cutting below the longitudinal cutting line closest to the ground so as to divide a small piece 11 of the second lining concrete (shown as a shaded part in figure 3), and blasting the small piece 11 of the second lining concrete by adopting micro blasting, wherein all the small pieces of the second lining concrete naturally fall off after being unsupported. The last longitudinal cut is preferably made 20cm below the longitudinal cut closest to the ground.
Claims (3)
1. A method for cutting concrete for a tunnel secondary lining is characterized by comprising the following steps:
firstly, after the concrete and rock cutting equipment for the second lining of the tunnel enters the tunnel, the equipment must be reliably stopped;
the tunnel secondary lining concrete and rock cutting equipment comprises a tunnel secondary lining concrete and rock cutting mechanism, wherein the tunnel secondary lining concrete and rock cutting mechanism comprises a large arm (1), a telescopic arm (2) and a cutting arm (3), the front end of the large arm (1) is hinged with the rear end of the telescopic arm (2) through a universal joint (5), so that the telescopic arm (2) can swing up and down and swing back and forth relative to the large arm (1), the front end of the telescopic arm (2) is connected with the rear end of the cutting arm (3) through a slewing bearing (6), a cutting disc saw (4) is installed at the front end of the cutting arm (3), and the cutting disc saw (4) is provided with a depth control wheel (7) for controlling the cutting depth; a telescopic oil cylinder is arranged in the telescopic arm (2), and two-stage telescopic can be realized by adopting a three-section structure; the modified excavator, the crane, the rock drilling trolley or the drilling machine is the excavator, the crane, the rock drilling trolley or the drilling machine for unloading the front end working mechanism, and the tunnel secondary lining concrete and rock cutting mechanism is arranged on the modified excavator, the crane, the rock drilling trolley or the drilling machine through a large arm (1) and is used for replacing the front end working mechanism of the excavator, the crane, the rock drilling trolley or the drilling machine;
secondly, performing annular cutting on the second lining concrete of the tunnel along the extending direction of the tunnel, performing longitudinal cutting after the annular cutting is finished, and performing at least three times of through longitudinal cutting between every two annular cutting lines, so that the second lining concrete of the tunnel is divided into at least four second lining concrete blocks between every two annular cutting lines;
and thirdly, carrying out the last longitudinal cutting below the longitudinal cutting line closest to the ground, wherein the last longitudinal cutting is carried out at a position 20cm below the longitudinal cutting line closest to the ground, so that a small piece of the second-lining concrete is separated, the small piece of the second-lining concrete is crushed by micro blasting, and all the small pieces of the second-lining concrete naturally fall off after being unsupported.
2. The method for cutting concrete for tunnel secondary lining according to claim 1, wherein: the tunnel secondary lining concrete and rock cutting equipment is also provided with a high-pressure spraying system and a water tank for dust removal, or a dust collector for dust removal.
3. The method for cutting concrete for tunnel secondary lining according to claim 1, wherein: the tunnel secondary lining concrete and rock cutting equipment is also provided with a cutting path plan, the size of the section of the tunnel is determined through laser scanning, and the cutting path is intelligently planned; a video camera is additionally arranged, and visual identification is carried out on the cutting track; the posture sensing of the whole vehicle is additionally arranged, so that the stability of the whole vehicle is ensured, and the cutting stability is improved; the health perception is additionally arranged, and the hydraulic oil pump and the oil circuit are monitored in real time; the intelligent system automatically stops after sensing the problem, so that safe cutting is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329575.0A CN110065167B (en) | 2019-04-23 | 2019-04-23 | Tunnel secondary lining concrete and rock cutting mechanism, cutting equipment and cutting method |
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| CN201910329575.0A CN110065167B (en) | 2019-04-23 | 2019-04-23 | Tunnel secondary lining concrete and rock cutting mechanism, cutting equipment and cutting method |
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| CN110065167A CN110065167A (en) | 2019-07-30 |
| CN110065167B true CN110065167B (en) | 2021-05-28 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110410102B (en) * | 2019-08-22 | 2021-05-18 | 西南交通大学 | Construction method for removing interlayer lining of operating high-speed rail tunnel |
| CN114454343A (en) * | 2022-02-22 | 2022-05-10 | 南京航空航天大学 | Concrete engineering structure crack repairing and slotting device |
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