CN111720134B - Method for replacing TBM cutter head in hole without enlarging hole - Google Patents
Method for replacing TBM cutter head in hole without enlarging hole Download PDFInfo
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- CN111720134B CN111720134B CN202010638676.9A CN202010638676A CN111720134B CN 111720134 B CN111720134 B CN 111720134B CN 202010638676 A CN202010638676 A CN 202010638676A CN 111720134 B CN111720134 B CN 111720134B
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- cutter head
- foundation pit
- tbm
- edge block
- block
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a method for replacing a TBM cutter head in a tunnel without enlarging a tunnel, which comprises the following steps: 1) excavating a foundation pit; 2) installing a rotary lifting device; 3) removing the old cutter head edge block by using a rotary lifting device; 4) removing the center block of the old cutter head; 5) installing a new cutter head center block; 6) and installing a new cutter head edge block. The method has the advantages of simplicity and convenience in operation, and by adopting the method, the cutter head can be conveniently and quickly lifted, positioned and installed in an effective space, so that a large amount of construction time and cost are saved, the construction period is greatly shortened, and the construction efficiency is improved.
Description
Technical Field
The invention relates to a TBM cutter head replacement method, in particular to a TBM cutter head replacement method in a tunnel without an enlarged tunnel.
Background
At present, in tunnel construction, as the construction environment and geological conditions are more and more complex, the continuous tunneling length of a tunnel is more and more large, so that the TBM is more and more widely adopted; when the enlarged hole diameter exceeds the original design enlarging and digging capacity or the structure form of the cutter head needs to be changed, the cutter head or the cutter head side block needs to be replaced in the TBM construction process. The traditional method is to construct and enlarge a cavern, install a bridge crane or a large-tonnage hoisting block and provide an operation space and hoisting equipment for cutter head replacement. The existing method for enlarging the cavern comprises two methods, namely, the cavern is enlarged by using a branch tunnel, and the cavern is enlarged by using a pilot tunnel in a TBM construction tunnel in front of a cutter head.
Disclosure of Invention
The invention aims to provide a method for replacing a TBM cutterhead without enlarging a cavern in a limited space, wherein the TBM cutterhead can be conveniently lifted, positioned and installed.
The invention aims to realize the replacement method of the TBM cutterhead in the cavern without enlarging the cavern, which comprises the following steps: 1) excavating a foundation pit; 2) installing a rotary lifting device; 3) removing the old cutter head edge block by using a rotary lifting device; 4) removing the center block of the old cutter head; 5) installing a new cutter head center block; 6) and installing a new cutter head edge block.
In the steps 1) and 2), a cutter head transferring foundation pit is constructed below the TBM main beam, and the size of the foundation pit is determined according to the size of the edge block of the cutter head and the size of the rotary lifter; and after the excavation, the reinforcement and the lining of the foundation pit are finished, installing and debugging the rotary lifter.
Wherein, the step 3) comprises the following steps: (1) retreating the TBM until the edge block of the cutterhead to be dismantled reaches the middle point of the rotary lifter, dismantling the edge block of the cutterhead, fixing the edge block of the cutterhead, and continuing to retreat the TBM until the rear part of the foundation pit; (2) horizontally rotating the cutter head edge block by 90 degrees, and lowering the cutter head edge block into the foundation pit by using a rotary lifter; lowering the final position until the bottom shield is not influenced to pass; (3) the TBM is moved forwards to a design position of the foundation pit below the main beam, the side block is lifted to a design height by using a rotary lifter, and the side block is lifted independently and loaded for outward transportation; 4) and (4) moving the TBM back and forth, and dismantling the cutter head edge blocks according to diagonal lines.
Further, in the step 5), the new cutter head center block is transported to the position of the rotary lifter, the center of the new cutter head is pushed to the bottom of the foundation pit, the center of the new cutter head is jacked through the rotary lifter, the rotating body is completed, and finally the new cutter head center is installed.
Wherein, the step 6) comprises the following steps: (1) transporting the new cutter head edge block to the position of the rotary lifter, and pushing the new cutter head edge block to the bottom of the foundation pit; (2) retreating the TBM to the rear part of the foundation pit, jacking a new cutter head edge block, and completing rotation of the new cutter head edge block; (3) and pushing the TBM forwards to the position of the new edge block of the cutter head, and installing the new edge block.
In the invention, the rotary lifter comprises a lifting device positioned in a foundation pit, a hoisting mechanism is arranged above the lifting device, the hoisting mechanism is arranged on the upper end surface of the foundation pit, and a tray mechanism is arranged on the upper end surface of the lifting device.
The lifting device comprises four upright columns which are vertically arranged in a foundation pit and are arranged in pairs in an opposite mode, a triangular support is arranged on the upper portion of the outer side of each upright column, and a lifting oil cylinder is vertically arranged on each triangular support; the tray mechanism is positioned on the upper end face of the upright post, and the lifting oil cylinder is propped against the lower end face of the tray mechanism.
The tray mechanism comprises a tray horizontally arranged on the upper end face of the stand column, and a rotating mechanism is arranged on the upper end face of the tray.
Further, the rotating mechanism includes a lower turntable, a turntable bearing is disposed on an upper end surface of the lower turntable, and an upper turntable is disposed on an upper end surface of the turntable bearing; two sides of the upper end surface of the lower disc of the turntable are provided with rotary limiters; the tray upper end face is provided with the translation stopper, the translation stopper is two, and sets up respectively in carousel lower wall both sides, translation stopper one end is connected with the tray, and the other end and carousel lower wall sub-unit connection.
Further, the hoisting mechanism comprises a steel structure frame, a pair of hoisting oil cylinders are respectively arranged at two ends of the steel structure frame, the upper ends of the hoisting oil cylinders are connected with the steel structure frame, and the lower ends of the hoisting oil cylinders are connected with the tray.
By adopting the technical scheme, the method has the advantages of simplicity and convenience in operation, the cutter head can be conveniently and quickly lifted, positioned and installed in an effective space, a large amount of construction time and cost are saved, the construction period is greatly shortened, and the construction efficiency is improved.
Drawings
The drawings of the invention are illustrated as follows:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural diagram of a rotating mechanism of the present invention;
fig. 4 is a top view of fig. 3.
Detailed Description
The following detailed description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments will still fall within the scope of the present invention claimed in the claims.
Example 1: as shown in fig. 1, a method for replacing a TBM cutterhead in a cavern without enlargement comprises the following steps: 1) excavating a foundation pit; 2) installing a rotary lifting device; 3) removing 13 old cutter head edges by using a rotary lifting device; 4) removing the old cutterhead center block 14; 5) installing a new cutter head center block; 6) and installing a new cutter head edge block.
In the steps 1) and 2), a cutter head transferring foundation pit is constructed below the TBM main beam, and the size of the foundation pit is determined according to the size of the edge block of the cutter head and the size of the rotary lifter; and after the excavation, the reinforcement and the lining of the foundation pit are finished, installing and debugging the rotary lifter.
Further described, the step 3) comprises the following steps: (1) retreating the TBM until the edge block of the cutterhead to be dismantled reaches the middle point of the rotary lifter, dismantling the edge block of the cutterhead, fixing the edge block of the cutterhead, and continuing to retreat the TBM until the rear part of the foundation pit; (2) horizontally rotating the cutter head edge block by 90 degrees, and lowering the cutter head edge block into the foundation pit by using a rotary lifter; lowering the final position until the bottom shield is not influenced to pass; (3) the TBM is moved forwards to a design position of the foundation pit below the main beam, the side block is lifted to a design height by using a rotary lifter, and the side block is lifted independently and loaded for outward transportation; 4) and (4) moving the TBM back and forth, and dismantling the cutter head edge blocks according to diagonal lines.
Further describing, in the step 5), the new cutter head center block is transported to the position of the rotary lifter, the new cutter head center is pushed to the bottom of the foundation pit, the new cutter head center is jacked up through the rotary lifter, the rotating body is completed, and finally the new cutter head center installation is carried out.
Further described, the step 6) comprises the following steps: (1) transporting the new cutter head edge block to the position of the rotary lifter, and pushing the new cutter head edge block to the bottom of the foundation pit; (2) retreating the TBM to the rear part of the foundation pit, jacking a new cutter head edge block, and completing rotation of the new cutter head edge block; (3) and pushing the TBM forwards to the position of the new edge block of the cutter head, and installing the new edge block.
After the new cutter head component is installed, detecting the height of each cutter position by using a special measuring tool, and fastening a bolt after the detection is qualified; and then, welding the cutter head after all the bolts are fastened.
As shown in fig. 1 and 2, in the present invention, the rotary lifter includes a lifting device located in the foundation pit (1), a hoisting mechanism is disposed above the lifting device, the hoisting mechanism is disposed on the upper end surface of the foundation pit (1), and a tray mechanism is disposed on the upper end surface of the lifting device.
The lifting device comprises four upright posts 2 which are vertically arranged in a foundation pit 1 and are arranged oppositely in pairs, a triangular support 3 is arranged at the upper part of the outer side of each upright post 2, and a lifting oil cylinder 4 is vertically arranged on each triangular support 3; the tray mechanism is positioned on the upper end surface of the upright post 2, and the lifting oil cylinder 4 is propped against the lower end surface of the tray mechanism.
The tray mechanism comprises a tray 5 horizontally arranged on the upper end face of the upright post 2, and a rotating mechanism is arranged on the upper end face of the tray 5.
As shown in fig. 3 and 4, further described, the rotating mechanism includes a lower turntable plate 6, a turntable bearing 7 is disposed on an upper end surface of the lower turntable plate 6, and an upper turntable plate 8 is disposed on an upper end surface of the turntable bearing 7; both sides of the upper end surface of the lower disc 6 of the turntable are provided with rotary limiters 9; the tray is characterized in that two translation limiting devices 10 are arranged on the upper end face of the tray 5 and are respectively arranged on two sides of the lower disc 6 of the rotary disc, one end of each translation limiting device 10 is connected with the tray 5, and the other end of each translation limiting device is connected with the lower portion of the lower disc 6 of the rotary disc.
In the invention, the hoisting mechanism comprises a steel structure frame 11, a pair of hoisting oil cylinders 12 are respectively arranged at two ends of the steel structure frame 11, the upper ends of the hoisting oil cylinders 12 are connected with the steel structure frame 11, and the lower ends of the hoisting oil cylinders 12 are connected with the tray 5.
When the cutter head side block needs to be removed, a lifting device, a tray 5 and an attachment mechanism are installed in the foundation pit 1 and connected with a hydraulic pipeline, and the tray 5 and the attachment mechanism are lowered to the position that the upper surface is lower than the bottom surface of the tunnel; retreating the TBM to be right above the foundation pit 1, connecting a rotating mechanism with the cutter head edge block, and dismantling the cutter head edge block; the TBM continuously retreats, and the edge block of the cutter head is rotated to the axial direction of the tunnel through a rotating mechanism; installing a hoisting mechanism above the foundation pit 1, hoisting the tray 5 by using a hoisting oil cylinder 12, and removing the triangular supports 3 and the hoisting oil cylinder 4; the hoisting oil cylinder 12 is lowered, and the cutter head edge block and the tray 5 are placed in the foundation pit; and the TBM advances to the shield to be separated from the foundation pit, and the cutter head side block is lifted and transported out.
When the cutter head edge block needs to be installed, the reverse step implementation of dismantling is adopted, the vertical height of the cutter head edge block can be adjusted through the lifting oil cylinder 4, the cutter head edge block can be rotated through the rotating mechanism, and the left and right positions of the cutter head edge block can be adjusted through the translation oil cylinder.
Claims (8)
1. A TBM cutter head non-expansion chamber hole inner replacement method is characterized by comprising the following steps: 1) excavating a foundation pit; therefore, the tunnel is not required to be subjected to full-section expanding excavation to form an expanded cavern; 2) installing a rotary lifter in the foundation pit; 3) removing the old cutter head edge block by using a rotary lifter; 4) removing the center block of the old cutter head; 5) installing a new cutter head center block; 6) installing a new cutter head edge block;
in the steps 1) and 2), constructing a cutter head transferring foundation pit below the TBM main beam, wherein the size of the foundation pit is determined according to the size of the edge block of the cutter head and the size of the rotary lifter; after the foundation pit is excavated, reinforced and lined, a rotary lifter is installed and debugged;
the step 3) comprises the following steps: (1) retreating the TBM until the edge block of the cutterhead to be dismantled reaches the middle point of the rotary lifter, dismantling the edge block of the cutterhead, fixing the edge block of the cutterhead, and continuing to retreat the TBM until the rear part of the foundation pit; (2) horizontally rotating the cutter head edge block by 90 degrees, and lowering the cutter head edge block into the foundation pit by using a rotary lifter; lowering the final position until the bottom shield is not influenced to pass; (3) the TBM is moved forwards to a design position of the foundation pit below the main beam, the side block is lifted to a design height by using a rotary lifter, and the side block is lifted independently and loaded for outward transportation; 4) and (4) moving the TBM back and forth, and dismantling the cutter head edge blocks according to diagonal lines.
2. The method of claim 1 for replacing a TBM cutterhead in a non-enlarged cavern, wherein: in the step 5), the new cutter head center block is transported to the position of the rotary lifter, the center of the new cutter head is pushed to the bottom of the foundation pit, the center of the new cutter head is jacked through the rotary lifter, the rotating body is completed, and finally the new cutter head center is installed.
3. The method for replacing a TBM cutterhead in a non-enlarged cavern as claimed in claim 2, wherein said step 6) comprises the steps of: (1) transporting the new cutter head edge block to the position of the rotary lifter, and pushing the new cutter head edge block to the bottom of the foundation pit; (2) retreating the TBM to the rear part of the foundation pit, jacking a new cutter head edge block, and completing rotation of the new cutter head edge block; (3) and pushing the TBM forwards to the position of the new edge block of the cutter head, and installing the new edge block.
4. The method of claim 3 for replacing a TBM cutterhead in a non-enlarged cavern, wherein: the rotary lifter comprises a lifting device located in a foundation pit (1), a lifting mechanism is arranged above the lifting device, the lifting mechanism is arranged on the upper end face of the foundation pit (1), and a tray mechanism is arranged on the upper end face of the lifting device.
5. The method of claim 4 for replacing a TBM cutterhead in a non-enlarged cavern, wherein: the lifting device comprises four upright posts (2) which are vertically arranged in a foundation pit (1) and are arranged in pairs in an opposite manner, a triangular support (3) is arranged at the upper part of the outer side of each upright post (2), and a lifting oil cylinder (4) is vertically arranged on each triangular support (3); the tray mechanism is positioned on the upper end surface of the upright post (2), and the lifting oil cylinder (4) is propped against the lower end surface of the tray mechanism.
6. The method of claim 5 for replacing a TBM cutterhead in a non-enlarged cavern, which is characterized in that: the tray mechanism comprises a tray (5) horizontally arranged on the upper end face of the upright post (2), and a rotating mechanism is arranged on the upper end face of the tray (5).
7. The method of claim 6, wherein said method comprises: the rotating mechanism comprises a lower turntable disc (6), a turntable bearing (7) is arranged on the upper end face of the lower turntable disc (6), and an upper turntable disc (8) is arranged on the upper end face of the turntable bearing (7); two sides of the upper end surface of the lower disc (6) of the turntable are provided with rotary limiters (9); tray (5) up end is provided with translation stopper (10), translation stopper (10) are two, and set up respectively in carousel lower wall (6) both sides, translation stopper (10) one end is connected with tray (5), the other end and carousel lower wall (6) sub-unit connection.
8. The method of claim 7 for replacing a TBM cutterhead in a non-enlarged cavern, wherein: the lifting mechanism comprises a steel structure frame (11), a pair of lifting oil cylinders (12) are respectively arranged at two ends of the steel structure frame (11), the upper ends of the lifting oil cylinders (12) are connected with the steel structure frame (11), and the lower ends of the lifting oil cylinders (12) are connected with the tray (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638676.9A CN111720134B (en) | 2020-07-06 | 2020-07-06 | Method for replacing TBM cutter head in hole without enlarging hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638676.9A CN111720134B (en) | 2020-07-06 | 2020-07-06 | Method for replacing TBM cutter head in hole without enlarging hole |
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| Publication Number | Publication Date |
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| CN111720134A CN111720134A (en) | 2020-09-29 |
| CN111720134B true CN111720134B (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010638676.9A Active CN111720134B (en) | 2020-07-06 | 2020-07-06 | Method for replacing TBM cutter head in hole without enlarging hole |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194995A (en) * | 2000-12-27 | 2002-07-10 | Shimizu Corp | Replacement method of cutter bit for shield machine |
| CN102493813A (en) * | 2011-11-22 | 2012-06-13 | 张英华 | Shield tunneling machine for underground pipeline |
| CN103133007A (en) * | 2013-03-01 | 2013-06-05 | 中铁三局集团有限公司 | Shield ground compartment opening method |
| CN203452796U (en) * | 2013-11-22 | 2014-02-26 | 北京住总集团有限责任公司 | Vertical shaft base structure for shield machine to pass through |
| CN110284889A (en) * | 2019-06-24 | 2019-09-27 | 中铁隧道局集团有限公司 | A kind of flat pilot tunnel Enlargement excavation method of TBM |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678759A (en) * | 2018-03-13 | 2018-10-19 | 广东水电二局股份有限公司 | The replacing options of TBM development machine components in a kind of tunnel |
-
2020
- 2020-07-06 CN CN202010638676.9A patent/CN111720134B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002194995A (en) * | 2000-12-27 | 2002-07-10 | Shimizu Corp | Replacement method of cutter bit for shield machine |
| CN102493813A (en) * | 2011-11-22 | 2012-06-13 | 张英华 | Shield tunneling machine for underground pipeline |
| CN103133007A (en) * | 2013-03-01 | 2013-06-05 | 中铁三局集团有限公司 | Shield ground compartment opening method |
| CN203452796U (en) * | 2013-11-22 | 2014-02-26 | 北京住总集团有限责任公司 | Vertical shaft base structure for shield machine to pass through |
| CN110284889A (en) * | 2019-06-24 | 2019-09-27 | 中铁隧道局集团有限公司 | A kind of flat pilot tunnel Enlargement excavation method of TBM |
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| CN111720134A (en) | 2020-09-29 |
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