CN108868787B - Shield starting construction method for river-crossing tunnel - Google Patents

Shield starting construction method for river-crossing tunnel Download PDF

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Publication number
CN108868787B
CN108868787B CN201810668353.7A CN201810668353A CN108868787B CN 108868787 B CN108868787 B CN 108868787B CN 201810668353 A CN201810668353 A CN 201810668353A CN 108868787 B CN108868787 B CN 108868787B
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China
Prior art keywords
installing
installation
mud
gantry crane
shield
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Application number
CN201810668353.7A
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Chinese (zh)
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CN108868787A (en
Inventor
孙振川
张迅
郭海坡
张兵
李栋
韩伟锋
李凤远
周建军
陈馈
郭璐
陈桥
王凯
王发民
彭正勇
沈峰
周东勇
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State Key Laboratory of Shield Machine and Boring Technology
China Railway Tunnel Group Co Ltd CRTG
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State Key Laboratory of Shield Machine and Boring Technology
China Railway Tunnel Group Co Ltd CRTG
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining

Abstract

The invention discloses a shield launching construction method of a river-crossing tunnel, which mainly comprises four steps of ground equipment installation, well wall equipment installation, shaft bottom equipment installation and shield machine installation; by combing the steps and optimizing the process, the invention provides a safe and efficient shield starting construction method on the whole, and the method can ensure the safety and stability of subsequent construction and save the construction cost and the construction period.

Description

Shield starting construction method for river-crossing tunnel
Technical Field
The invention relates to a construction method of a tunnel shield, in particular to a construction method for starting a river-crossing tunnel shield.
Background
The river-crossing tunnel has the advantages of no restriction on shipping, no influence of weather conditions, good anti-seismic performance, high strategic significance and the like, and is generally applied to river-crossing engineering in recent years. The slurry balance shield method is one of the main construction methods of the river-crossing tunnel, and slurry balance shield construction is adopted in the offshore middle-way tunnel engineering, the Shanghai Yangtze river tunnel engineering, the Wuhan Yangtze river tunnel engineering, the Nanjing Yangtze river tunnel engineering and the like. When slurry balance shield is carried out, if the preparation work before shield starting is insufficient or the preparation work is not arranged according to a reasonable flow, the safety and the construction progress of later construction can be directly influenced, so that the shield starting preparation work is very important.
In the prior art, some researches related to shield starting preparation work exist, but the above technologies are usually improved only for a certain very small and specific problem in shield starting work, and from the whole shield starting work, researches for optimizing the whole flow of each work in starting preparation are not common, so that in order to ensure the safety and economy of construction, a set of construction method with reasonable flow arrangement is obtained from the whole shield starting preparation work.
Disclosure of Invention
The invention aims to design a shield launching construction method of a river-crossing tunnel, and solves the defects in the prior art.
The invention is realized by the following specific structure:
the invention relates to a shield launching construction method of a river-crossing tunnel, which comprises the following specific construction steps:
(1) firstly, carrying out a ground equipment installation step, which sequentially comprises the following steps: the method comprises the following steps of box-type substation installation, gantry crane installation, air compressor installation, muddy water treatment system installation, mortar stirring device installation, cooling water pool installation, fan installation and grouting equipment installation.
The gantry crane is a 10-ton gantry crane, and the specific installation steps of the gantry crane are as follows: (a) setting a track sample line according to the measurement of the gauge of the gantry crane, and pouring a concrete foundation with the width of 1200mm and the height of 300 mm; (b) after the concrete reaches a certain strength, putting the pre-welded reinforcement with the embedded bolts on a concrete foundation, and then pouring the concrete with the width of 800mm and the depth of 400 mm; (c) paving a track according to requirements, and adjusting the track gauge and the track elevation; (d) placing a gantry crane ground beam on a track by using a crane and temporarily fixing the gantry crane ground beam; (e) assembling the support legs of the gantry crane on the ground, assembling the support legs and the ground beam by using a crane, and fixing the support legs by using a wind rope; (f) after assembling the top beam of the gantry crane on the ground, connecting the top beam with the supporting legs by using a crane, correcting the posture of the gantry crane by adjusting the wind rope, and installing a driving tower.
The mud-water treatment system comprises a mud supply pump, a mud discharge pump, an electric control mud valve, a mud bypass system, a mud inlet pipeline, a mud discharge pipeline, three relay mud discharge pumps and one relay mud supply pump, wherein the mud pump, the mud discharge pump and the mud supply pump all adopt stepless speed change pumps, can be subjected to centralized control through a PLC (programmable logic controller), and can be subjected to independent local direct control.
(2) Then, a step of installing well wall equipment is carried out, and the steps sequentially comprise: the method comprises the following steps of elevator installation, power cable installation, slurry pipeline installation, cooling water pipe installation, compressed air pipe installation, telephone line installation and sewage pipe installation;
(3) followed by a downhole equipment installation step comprising, in order: installing a sewage pump, installing a reaction wall, installing a hole seal, installing a measuring bracket, installing a steel structure base, installing a shield guide rail and installing a trailer rack;
(4) and finally, carrying out a shield tunneling machine installation step, which sequentially comprises the following steps: the method comprises the steps of installing a first section of the shield tunneling machine, installing a second section of the shield tunneling machine, installing a shield tail, installing a push pad, installing a support, installing a negative ring and installing a trailer.
The invention can produce the following beneficial effects:
by combing and optimizing the flow of four installation steps of ground equipment installation, well wall equipment installation, shaft bottom equipment installation, shield machine installation and the like, a set of safe and efficient shield starting construction method is integrally provided, the safety and stability of subsequent construction can be ensured by the method, and the construction cost and the construction period can be saved.
A set of strict gantry crane installation process flow and parameters are provided, and the safety and the stability of later-stage gantry crane use are greatly improved.
Drawings
Fig. 1 is a schematic diagram of a shield originating construction method of a river-crossing tunnel according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
The invention relates to a shield launching construction method of a river-crossing tunnel, which comprises the following specific construction steps:
(1) firstly, carrying out a ground equipment installation step, which sequentially comprises the following steps: the method comprises the following steps of box-type substation installation, gantry crane installation, air compressor installation, muddy water treatment system installation, mortar stirring device installation, cooling water pool installation, fan installation and grouting equipment installation.
The gantry crane is a 10-ton gantry crane, and the specific installation steps of the gantry crane are as follows: (a) setting a track sample line according to the measurement of the gauge of the gantry crane, and pouring a concrete foundation with the width of 1200mm and the height of 300 mm; (b) after the concrete reaches a certain strength, putting the pre-welded reinforcement with the embedded bolts on a concrete foundation, and then pouring the concrete with the width of 800mm and the depth of 400 mm; (c) paving a track according to requirements, and adjusting the track gauge and the track elevation; (d) placing a gantry crane ground beam on a track by using a crane and temporarily fixing the gantry crane ground beam; (e) assembling the support legs of the gantry crane on the ground, assembling the support legs and the ground beam by using a crane, and fixing the support legs by using a wind rope; (f) after assembling the top beam of the gantry crane on the ground, connecting the top beam with the supporting legs by using a crane, correcting the posture of the gantry crane by adjusting the wind rope, and installing a driving tower.
The mud-water treatment system comprises a mud supply pump, a mud discharge pump, an electric control mud valve, a mud bypass system, a mud inlet pipeline, a mud discharge pipeline, three relay mud discharge pumps and one relay mud supply pump, wherein the mud pump, the mud discharge pump and the mud supply pump all adopt stepless speed change pumps, can be subjected to centralized control through a PLC (programmable logic controller), and can be subjected to independent local direct control.
(2) Then, a step of installing well wall equipment is carried out, and the steps sequentially comprise: the method comprises the following steps of elevator installation, power cable installation, slurry pipeline installation, cooling water pipe installation, compressed air pipe installation, telephone line installation and sewage pipe installation;
(3) followed by a downhole equipment installation step comprising, in order: installing a sewage pump, installing a reaction wall, installing a hole seal, installing a measuring bracket, installing a steel structure base, installing a shield guide rail and installing a trailer rack;
(4) and finally, carrying out a shield tunneling machine installation step, which sequentially comprises the following steps: the method comprises the steps of installing a first section of the shield tunneling machine, installing a second section of the shield tunneling machine, installing a shield tail, installing a push pad, installing a support, installing a negative ring and installing a trailer.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention as defined in the following claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the invention should be included in the protection scope of the invention.

Claims (2)

1. A construction method for starting a shield of a tunnel crossing a river is characterized by comprising the following construction steps:
(1) firstly, carrying out a ground equipment installation step, which sequentially comprises the following steps: the method comprises the following steps of (1) installing a box-type transformer substation, installing a gantry crane, installing an air compressor, installing a muddy water treatment system, installing a mortar stirring device, installing a cooling water tank, installing a fan and installing grouting equipment;
(2) then, a step of installing well wall equipment is carried out, and the steps sequentially comprise: the method comprises the following steps of elevator installation, power cable installation, slurry pipeline installation, cooling water pipe installation, compressed air pipe installation, telephone line installation and sewage pipe installation;
(3) followed by a downhole equipment installation step comprising, in order: installing a sewage pump, installing a reaction wall, installing a hole seal, installing a measuring bracket, installing a steel structure base, installing a shield guide rail and installing a trailer rack;
(4) and finally, carrying out a shield tunneling machine installation step, which sequentially comprises the following steps: installing a first section of a shield machine, installing a second section of the shield machine, installing a shield tail, installing a push pad, installing a support, installing a negative ring and installing a trailer;
wherein: in the step (1), the gantry crane is a 10-ton gantry crane, and the specific installation steps of the gantry crane are as follows: (a) setting a track sample line according to the measurement of the gauge of the gantry crane, and pouring a concrete foundation with the width of 1200mm and the height of 300 mm; (b) after the concrete reaches a certain strength, putting the pre-welded reinforcement with the embedded bolts on a concrete foundation, and then pouring the concrete with the width of 800mm and the depth of 400 mm; (c) paving a track according to requirements, and adjusting the track gauge and the track elevation; (d) placing a gantry crane ground beam on a track by using a crane and temporarily fixing the gantry crane ground beam; (e) assembling the support legs of the gantry crane on the ground, assembling the support legs and the ground beam by using a crane, and fixing the support legs by using a wind rope; (f) after assembling the top beam of the gantry crane on the ground, connecting the top beam with the supporting legs by using a crane, correcting the posture of the gantry crane by adjusting the wind rope, and installing a driving tower.
2. The shield originating construction method of the river-crossing tunnel according to claim 1, wherein in the step (1): the mud-water treatment system comprises a mud supply pump, a mud discharge pump, an electric control mud valve, a mud bypass system, a mud inlet pipeline, a mud discharge pipeline, three relay mud discharge pumps and one relay mud supply pump, wherein the mud supply pump, the mud discharge pump, the relay mud discharge pump and the relay mud supply pump all adopt infinitely variable speed pumps, can be subjected to centralized control through a PLC (programmable logic controller), and can be subjected to independent local direct control.
CN201810668353.7A 2018-06-26 2018-06-26 Shield starting construction method for river-crossing tunnel Active CN108868787B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810668353.7A CN108868787B (en) 2018-06-26 2018-06-26 Shield starting construction method for river-crossing tunnel

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Application Number Priority Date Filing Date Title
CN201810668353.7A CN108868787B (en) 2018-06-26 2018-06-26 Shield starting construction method for river-crossing tunnel

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CN108868787B true CN108868787B (en) 2020-06-09

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111173522A (en) * 2019-12-18 2020-05-19 中铁二十二局集团轨道工程有限公司 Construction method for hoisting and descending air shaft shield machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0978984A (en) * 1995-09-13 1997-03-25 Morimotogumi:Kk Buried pipe feed jig in propulsion construction method
CN103452563A (en) * 2013-09-17 2013-12-18 中铁隧道装备制造有限公司 Construction method applicable to drift sand or weak surrounding rock
CN103899324A (en) * 2014-04-10 2014-07-02 中铁五局(集团)有限公司 Construction method for balance originating of earth pressure balance shield machine
CN107725059A (en) * 2017-09-27 2018-02-23 中铁十二局集团有限公司 The ultrashort miniature shield machine main frame separate launching construction method originated under steric requirements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0978984A (en) * 1995-09-13 1997-03-25 Morimotogumi:Kk Buried pipe feed jig in propulsion construction method
CN103452563A (en) * 2013-09-17 2013-12-18 中铁隧道装备制造有限公司 Construction method applicable to drift sand or weak surrounding rock
CN103899324A (en) * 2014-04-10 2014-07-02 中铁五局(集团)有限公司 Construction method for balance originating of earth pressure balance shield machine
CN107725059A (en) * 2017-09-27 2018-02-23 中铁十二局集团有限公司 The ultrashort miniature shield machine main frame separate launching construction method originated under steric requirements

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