CN111878097B - Construction method for dismantling shield tunneling machine propelling jack by using chain block in hole - Google Patents
Construction method for dismantling shield tunneling machine propelling jack by using chain block in hole Download PDFInfo
- Publication number
- CN111878097B CN111878097B CN202010562663.8A CN202010562663A CN111878097B CN 111878097 B CN111878097 B CN 111878097B CN 202010562663 A CN202010562663 A CN 202010562663A CN 111878097 B CN111878097 B CN 111878097B
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- Prior art keywords
- jack
- lifting
- shield
- jacks
- lifting lugs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/0621—Shield advancing devices
Abstract
The invention belongs to the technical field of shield tunnel engineering construction, and particularly relates to a construction method for removing a pushing jack of a shield machine in a tunnel by using a chain block, which solves the technical problem that an erector is difficult to remove the pushing jack of the shield machine in the tunnel. The construction method for dismantling the propelling jack of the shield tunneling machine by adopting the chain block in the hole realizes the technical problem of dismantling the propelling jack in the hole. Meanwhile, the method has the advantages of short construction period, high safety and remarkable economic benefit, and is worthy of large-area popularization and application.
Description
Technical Field
The invention belongs to the technical field of shield tunnel engineering construction, and particularly relates to a construction method for dismantling a shield machine propelling jack by a chain block in a tunnel.
Background
The shield construction method is more commonly used in urban rail transit construction, and generally comprises an originating well and a receiving well, wherein the originating well is used for hoisting and originating the shield machine, and the receiving well is used for receiving and disassembling the shield machine; when the shield construction method is used for non-urban rail transit construction, a shield receiving well is not constructed from the aspects of safety and investment under the conditions of deeper burial depth and complex geological conditions of the shield construction machine, so that the shield construction machine adopts a scheme of dismantling a abandoned shell in a tunnel; the tunnel inner dismantling of the shield machine propelling jack has the characteristics of narrow operation space, long length of the propelling jack and the like, and the tunnel inner dismantling propelling jack is blocked under the condition that the assembling machine does not dismantle the propelling jack, so that the feasibility of the whole tunnel inner dismantling technical scheme is influenced.
Disclosure of Invention
The invention aims to provide a construction method for removing a propelling jack of a shield tunneling machine in a tunnel by using a chain block, and the technical problem that the propelling jack of the shield tunneling machine is difficult to remove in the tunnel by an erector is solved.
The invention is realized by the following technical scheme: a construction method for dismantling a shield tunneling machine propelling jack by a chain block in a tunnel comprises the following steps:
s1: determining a dismantling area of the propelling jack according to the position relation between the propelling jack and the assembling machine;
s2: dividing a pushing jack dismantling area into a jack right above the assembling machine, jacks at two sides of the assembling machine and jacks right below the assembling machine;
s3: determining the detaching sequence of the pushing jacks in the step S2 as firstly detaching the jacks at the right lower part of the erector, further detaching the jacks at the two sides, and finally detaching the jacks at the right upper part;
s4: the lifting lugs of the front lower propelling jacks are welded at the lower parts of the screw conveyor and the assembling machine, and the jacks at two sides and the jacks at the front upper part are welded at the shield tail and the shield shell;
s5: supporting the welding position of the lifting lug of the jack at the right lower part and being 500mm away from the dismounting jack support, welding a 5T lifting lug at 1500mm respectively, and dragging the lifting lug 5T lifting lug of the jack to be installed on a segment hoisting hole and a bolt hole;
s6: supporting the welding positions of the lifting lugs on the two sides, welding a 5T lifting lug 500m and 1500m away from the dismantling jack support, and dragging the lifting lugs on the two sides to be installed in the segment hoisting hole and the bolt hole;
s7: supporting the welding position of the lifting lug of the upper jack 500mm away from the dismounting jack support, welding 2 lifting lugs of 5T at 1500mm, and dragging the lifting lug of the upper jack 5T to be installed in a segment lifting hole and a bolt hole;
s8: 3 5T hoists are required to be dismantled when jacks on the lower portion of the erector are dismantled, 3 5T hoists are required to be dismantled when jacks on two sides of the erector are dismantled, and 5T hoists are required to be dismantled when jacks on the upper portion of the erector are dismantled.
And welding and installing a chain block lifting lug on the shield shell according to the position relation between the assembling machine and the propelling jack, and taking the shortest working length of a chain of the chain block as a reference when welding the lifting lug.
The jack is supported by the push jack at the right upper part of the assembling machine in a mode of interlocking every two of the hoist chains.
And mounting jacks on the segment hoisting holes and the segment bolt holes to separate from the support dragging lifting lugs.
The specification of the chain block is not less than 5 tons.
The number of the chain blocks and the mode of the block fixed pushing jacks are determined according to the distribution of the pushing jacks of the shield machine, the jacks are pushed by the positions of the jacks at the uppermost part of the assembling machine, the jacks are pushed by the left side and the right side of the assembling machine, and the pushing jacks at the lowermost part of the assembling machine are divided into regions. The method comprises the following steps of dismantling a propelling jack of the shield tunneling machine, namely dismantling a propelling jack at the lowest part of the erector, dismantling propelling jacks at the left side and the right side of the erector, and dismantling a propelling jack at the right upper part of the erector, wherein each region is dismantled as follows;
the lifting device comprises a lowermost propelling jack, wherein lifting lugs welded on a screw machine are removed from the lowermost propelling jack and are used for stress points in the vertical direction, the number of the lifting lugs of the stress points in the vertical direction is 2, lifting lugs are arranged in a segment hoisting hole and a segment bolt hole and are used for horizontal dragging stress points of the jack, and a chain block of the horizontal dragging jack is 5T; dragging a pushing jack by using a horizontal chain block, dragging the jack to the position of the chain block in the vertical direction, and fixing the pushing jack by using the block until the jack is separated from the support; 2 5T hoists are placed to the bottom of the shield tail, and are hung to a pipe piece trolley of the battery car through double beams; repeating the steps to finish the dismounting work of the lowest propelling jack;
the lifting jack comprises a left side pushing jack and a right side pushing jack, wherein the left side pushing jack and the right side pushing jack are directly welded with 2 lifting lugs at the upper parts of the jacks, the welding positions of the lifting lugs are the same as those of the lifting lugs, the lifting lugs are provided with 2 5T chain blocks, and the upper parts of the lifting lugs are provided with blocks for fixing the jacks; installing horizontal dragging jack lifting lugs at positions of the disassembled jack corresponding to the segments, installing 1 lifting lug of 5T on each horizontal dragging lifting lug, enabling the jack to be separated from the support through 1 dragging hoist of 5T, and detaching the horizontal dragging hoist from the support through the jack separating support; the upper hoist of the jack is placed to the bottom of the shield body, and the double beams are used for hoisting the shield body to a pipe sheet trolley of the battery car; repeating the steps to finish the dismounting work of the left and right pushing jacks;
the upper most part of the lifting jack is tightly attached to the shield shell, and is subjected to the influence of the length of a chain block chain, 5 chain blocks are adopted for dismantling, each of the chain blocks is 5T, lifting lugs are welded on the shield shell to serve as stress points of the chain blocks, 2 rows of lifting lugs are welded on two sides of the dismantling lifting jack by the shield shell welding lifting lugs, 1 lifting lug is welded on each row of two sides, the first row of lifting lugs is 500mm away from the jack base, the second row of lifting lugs is 1500mm away from the jack base, and each lifting lug is provided with one 5T chain block; the method comprises the following steps that a jack is supported by interlocking 2 hoist chains in each row under the vertical stress of a propulsion jack, lifting lugs are installed at a segment lifting hole and a segment bolt hole, 1 5T hoist is placed at the lifting lug, the propulsion jack is fixed by using 2T lifting belts, the jack is pulled out by the hoist hung on a segment, the jack is pulled out by 500mm, the jack is supported by the first row of hoists on a shield shell, the jack is pulled out by 1500mm, and the jack is supported by the second row of hoists on the shield shell until the jack is separated from a support integrally; 2 rows of hoists placed on the shield shell are placed on the grabbing and lifting head of the assembling machine; 2 auxiliary lifting lugs are respectively welded on the left side and the right side of a shield shell, 5T hoists are installed on the auxiliary lifting lugs, the auxiliary lifting lug welding positions are arranged on the lifting lug welding positions, the horizontal distances are the same, the auxiliary hoists on the left side and the right side are used for fixing a propulsion jack, the auxiliary hoists pull the propulsion jack placed on a segment grabbing head until the jack is separated from the segment grabbing head, the auxiliary hoists on the left side of the shield shell are pulled towards the left side, the auxiliary hoists on the right side of the shield shell are loosened towards the left side until the propulsion jack is pulled towards the left side, then the auxiliary hoists on the right side of the shield shell are removed, the lower part of the propulsion jack is lifted to the bottom of a shield tail through the auxiliary hoists on the segment trolley of the storage battery car by adopting double beams; and repeating the steps to finish the dismounting work of the propulsion jack at the right upper part of the shield tunneling machine.
Compared with the prior art, the invention has the following specific technical characteristics and beneficial effects:
the method for dismantling the propulsion jack of the shield tunneling machine by adopting the chain block in the hole realizes the technical problem of dismantling the propulsion jack in the hole, has the advantages of short construction period, high safety and remarkable economic benefit, and is worthy of large-area popularization and application.
Drawings
FIG. 1 is a schematic view of the construction process of the present invention.
Detailed Description
Referring to fig. 1, the invention is further explained, a construction method for removing the propulsion jack of the shield machine by using a chain block in a hole is used for the removal construction of the propulsion jack of the shield machine in the hole, and the method comprises the following steps: s1: dividing a thrust cylinder dismantling area according to the position relation of the thrust jack on the assembling machine; s102: the pushing jack dismantling area is divided into an erector right upper jack, jacks on two sides of the erector, and an erector right lower jack; s103: the pushing jack dismounting sequence is that firstly, jacks on the right lower part of the erector are dismounted, then jacks on two sides of the erector are dismounted, and finally, jacks on the uppermost part of the erector are dismounted; s104: the lifting lugs of the front lower propelling jacks are welded at the lower parts of the screw conveyor and the assembling machine, and the jacks at two sides and the jacks at the front upper part are welded at the shield tail and the shield shell; s105: supporting the welding position of a lifting lug of the jack on the right lower part, wherein the distance between the welding position and the dismounting lifting lug support is 500mm, a 5T lifting lug is welded at 1500mm, and the 5T lifting lugs of the dragging lifting jack are arranged in a segment hoisting hole and a bolt hole; s106: supporting the welding positions of the lifting lugs on the two sides 500mm away from the dismantling jack support, welding 5T lifting lugs at 1500mm, and dragging the 5T lifting lugs on the two sides to be installed in the segment hoisting holes and the bolt holes; s107: supporting the welding position of the lifting lug of the upper jack 500mm away from the dismounting jack support, welding 2 lifting lugs of 5T at 1500mm, and dragging the lifting lug of the upper jack 5T to be installed in a segment lifting hole and a bolt hole; s108: 3 5T hoists are required to be dismantled when jacks on the lower portion of the erector are dismantled, 3 5T hoists are required to be dismantled when jacks on two sides of the erector are dismantled, and 5T hoists are required to be dismantled when jacks on the upper portion of the erector are dismantled.
In the embodiment of the invention, the minimum working length of a chain block chain must be considered in the lug welding position, the lug welding position is determined according to the minimum length of the chain block link, especially the minimum working length of the chain block chain cannot be met because a jack on the upper part of the erector is tightly attached to a shield shell, and the minimum working length of the chain block chain needs to be considered when the lug of the jack on the upper part of the erector is welded.
Preferably, the welding position of the lifting lug is determined through the minimum working length of the 5T chain block chain, and the lifting lug is welded within the range of the minimum working length of the chain block chain.
In the embodiment of the invention, when the uppermost pushing jack of the assembling machine is disassembled, 5T chain blocks are used for controlling the disassembling, 2 lifting lugs are respectively welded on two sides of the pushing jack, 2 rows are calculated, 2 lifting lugs in each row are supported by 4 chain blocks hung on the lifting lugs, and as the uppermost lifting jack is tightly attached to the shield shell, 2 chain blocks in each row support the pushing jack in an interlocking mode.
Preferably, the pushing jack on the front upper part of the erector is dismounted, the pushing jack is tightly attached to the shield shell due to the jack, the minimum working length of a single chain block chain is larger than the length distance between a welding lifting lug of the shield shell and the jack, the pushing jack is supported in a two-by-two interlocking mode of the chain blocks, and the pushing jack on the front upper part of the erector is dismounted by the chain blocks.
In the embodiment of the invention, 4 chain blocks are utilized by a pushing jack at the right upper part of the erector, the pushing jack is supported in a two-by-two interlocking mode through a block chain, the chain blocks are used for being lowered to a grabbing and lifting head of the erector, 2 auxiliary lifting lugs are respectively welded at the left side and the right side of the erector, the chain blocks are hung on the auxiliary lifting lugs, the left side of each chain block is loosened, the right side of each chain block is pulled, the pushing jack at the right upper part is pulled to the right side of the erector, and the pushing jack is lowered to the bottom of a shield tail through the auxiliary chain blocks at the right side.
Preferably, the front upper portion propulsion jack is placed on the assembling machine grabbing head, 2 5T auxiliary lifting lugs are welded on the left side and the right side of the assembling machine, 5T hoists are hung on the auxiliary lifting lugs to upwards draw zipper strips until the jack is separated from the assembling machine grabbing head, a left side chain is loosened, and the propulsion jack is dragged to the right side of the assembling machine in a mode that a right side chain is loosened.
In the embodiment of the invention, lifting lugs are arranged at the positions of the segment bolt holes and the segment hoisting holes, and the lifting lugs are hung with 1 5T chain block to pull the pushing jack until the jack is separated from the support.
The technical features disclosed in the above are not limited to the combinations of the other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention to achieve the purpose of the invention.
Claims (1)
1. A construction method for dismantling a shield tunneling machine propelling jack by adopting a chain block in a tunnel is characterized by comprising the following steps: determining the number of chain blocks and a mode of fixing the chain blocks to push jacks according to the position distribution of the push jacks of the shield machine, wherein the jack positions are distributed to push the jacks at the uppermost part of the erector, the push jacks at the left and right sides of the erector are divided into regions of the push jacks at the lowermost part of the erector, the push jacks at the lowermost part of the erector are detached firstly, the push jacks at the lowermost part of the erector are detached secondly, the push jacks at the left and right sides of the erector are detached finally, the push jacks at the right upper part of the erector are detached finally, and each region is detached as follows;
the hoisting device comprises a spiral machine, a lowermost propelling jack, a segment hoisting hole, a segment bolt hole, a lifting lug, a segment bolt hole, a segment lifting lug and a segment bolt hole, wherein the lowermost propelling jack is detached from the welding lifting lug on the spiral machine and is used for stress points in the vertical direction, the number of the stress points in the vertical direction is 2, the lifting lugs are arranged on the segment hoisting hole and the segment bolt hole and are used for horizontal dragging stress points of the jack, and the chain block of the horizontal dragging jack is 5T; dragging a pushing jack by using a horizontal chain block, dragging the jack to the position of the chain block in the vertical direction, and fixing the pushing jack by using the block until the jack is separated from the support; 2 5T hoists are placed to the bottom of the shield tail, and are hung on a pipe piece trolley of the storage battery car by using double beams; repeating the steps to finish the dismounting work of the lowest propelling jack;
the left and right propelling jacks are directly welded with 2 lifting lugs at the upper parts of the jacks, the welding positions of the lifting lugs are the same as those of the lifting lugs, 2 5T chain blocks are arranged on the lifting lugs, and the jacks are fixed by the blocks on the upper parts of the lifting lugs; installing horizontal dragging jack lifting lugs at positions of the disassembled jack corresponding to the segments, installing 1 lifting lug of 5T on each horizontal dragging lifting lug, and detaching the horizontal dragging hoist from a support through 1 dragging hoist of 5T until the jack is detached from the support; the upper hoist of the jack is placed to the bottom of the shield body, and the double beams are used for hoisting the shield body to a pipe sheet trolley of the battery car; repeating the steps to complete the dismantling work of the left and right propelling jacks;
the upper most part of the lifting jack is tightly attached to the shield shell, 5 chain blocks are adopted for dismounting due to the influence of the length of a chain block chain, each chain block is 5T, lifting lugs are welded on the shield shell to serve as stress points of the chain blocks, 2 rows of lifting lugs are welded on two sides of the dismounting lifting jack of the shield shell, 1 lifting lug is welded on each row of two sides, the first row of lifting lugs is 500mm away from the jack base, the second row of lifting lugs is 1500mm away from the jack base, and each lifting lug is provided with one 5T chain block; the method comprises the following steps that a propulsion jack is vertically stressed and supported by interlocking 2 hoist chains in each row, lifting lugs are installed at a duct piece hoisting hole and a duct piece bolt hole, 1 5T hoist is placed at the lifting lug, the propulsion jack is fixed by using a 2T lifting belt, the jack is pulled out by a hoist hung on a duct piece, the jack is pulled out by 500mm, the jack is supported by a first row of hoists on a shield shell, the jack is pulled out by 1500mm, and the jack is supported by a second row of hoists on the shield shell until the jack is integrally separated from a support; 2 rows of hoists placed on the shield shell are placed on the grabbing and lifting head of the assembling machine; 2 auxiliary lifting lugs are respectively welded on the left side and the right side of a shield shell, 5T hoists are installed on the auxiliary lifting lugs, the auxiliary lifting lug welding positions are arranged on the lifting lug welding positions, the horizontal distances are the same, the auxiliary hoists on the left side and the right side are used for fixing a propulsion jack, the auxiliary hoists pull the propulsion jack placed on a segment grabbing head until the jack is separated from the segment grabbing head, the auxiliary hoist on the left side of the shield shell is pulled towards the left side, the auxiliary hoist on the right side of the shield shell is loosened towards the left side until the propulsion jack is pulled to the left side, then the auxiliary hoist on the right side of the shield shell is dismantled, the propulsion jack is lowered to the bottom of a shield tail through the auxiliary hoist on the left side, and the dismantled propulsion jack is hoisted to a storage battery car segment trolley by adopting double beams; and repeating the steps to finish the dismounting work of the propulsion jack at the right upper part of the shield tunneling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562663.8A CN111878097B (en) | 2020-06-19 | 2020-06-19 | Construction method for dismantling shield tunneling machine propelling jack by using chain block in hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010562663.8A CN111878097B (en) | 2020-06-19 | 2020-06-19 | Construction method for dismantling shield tunneling machine propelling jack by using chain block in hole |
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| Publication Number | Publication Date |
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| CN111878097A CN111878097A (en) | 2020-11-03 |
| CN111878097B true CN111878097B (en) | 2022-07-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201665501U (en) * | 2010-03-17 | 2010-12-08 | 新汶矿业集团有限责任公司翟镇煤矿 | Lifting device used during dismantling fully mechanized mining bracket |
| CN102601605A (en) * | 2012-03-29 | 2012-07-25 | 中建市政建设有限公司 | Device for installing and detaching support shoes of jacks of shield tunneling machine and method for installing and detaching support shoes |
| JP2012241419A (en) * | 2011-05-19 | 2012-12-10 | Ohbayashi Corp | Disassembling method of shield machine |
| CN105108468A (en) * | 2015-08-27 | 2015-12-02 | 北京建工土木工程有限公司 | Method for detaching shield tunneling machine thrust oil cylinder in tunnel and detachment device |
| CN105149922A (en) * | 2015-08-27 | 2015-12-16 | 北京建工土木工程有限公司 | Dismounting device for dismounting components of shield tunneling machine in tunnel and application of dismounting device |
-
2020
- 2020-06-19 CN CN202010562663.8A patent/CN111878097B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201665501U (en) * | 2010-03-17 | 2010-12-08 | 新汶矿业集团有限责任公司翟镇煤矿 | Lifting device used during dismantling fully mechanized mining bracket |
| JP2012241419A (en) * | 2011-05-19 | 2012-12-10 | Ohbayashi Corp | Disassembling method of shield machine |
| CN102601605A (en) * | 2012-03-29 | 2012-07-25 | 中建市政建设有限公司 | Device for installing and detaching support shoes of jacks of shield tunneling machine and method for installing and detaching support shoes |
| CN105108468A (en) * | 2015-08-27 | 2015-12-02 | 北京建工土木工程有限公司 | Method for detaching shield tunneling machine thrust oil cylinder in tunnel and detachment device |
| CN105149922A (en) * | 2015-08-27 | 2015-12-16 | 北京建工土木工程有限公司 | Dismounting device for dismounting components of shield tunneling machine in tunnel and application of dismounting device |
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| CN111878097A (en) | 2020-11-03 |
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