Subsequent project and shield driving parallel construction method for long-distance railway tunnel

A parallel construction and long-distance technology, which is applied to tunnels, earthwork drilling, mining equipment, etc., can solve the problems of non-parallel construction, high cost, and long construction period, and achieve the effect of reducing the use of steel, shortening the construction period, and advanced technology

Active Publication Date: 2012-02-08
CHINA RAILWAY 12TH BUREAU GRP +1
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Problems solved by technology

[0003] The present invention provides a new long-distance tunneling method in order to solve the technical problems that the secondary lining, tunnel bottom longitudinal beam, cable trench, communication channel and other follow-up proj...

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example

[0125] The Shiziyang Tunnel of the Guangzhou-Shenzhen-Hong Kong Passenger Dedicated Line has a total length of 10,800 meters. It is designed as a double-track single tunnel. Four shield machines are used to excavate in opposite directions. The single-head excavation is 5,400 meters. The right line of the entrance of the Shiziyang Tunnel started on February 18, 2008. The left line started on August 18, 2008. The left and right lines adopt the shield tunneling construction and subsequent construction parallel construction technology described in the present invention. The maximum monthly excavation of the shield is 200m, the maximum monthly progress of the second lining is 300m, and the maximum monthly progress of the trench 300m. By December 2010, all tunnel bottoms, trenches, 23 communication passages, chutes, caulking and excavation will be completed simultaneously. Compared with the original design, excavation will be carried out first and subsequent construction will save one...

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Abstract

The invention relates to the technical field of shield tunnel construction, in particular to a subsequent project and shield driving parallel construction method for a long-distance railway tunnel. The method solves the technical problems that conventional railway shield tunnel driving cannot be constructed in parallel with subsequent projects of secondary linings, tunnel bottom longitudinal beams, cable grooves, communication passages and the like and has long construction period and high cost and the like. The method comprises the following steps of: performing shielded supporting facility and construction transport battery truck rail optimization during shield tunnel driving and extension of various pipelines in shield construction; and meanwhile, performing tunnel bottom longitudinal beam construction and secondary lining construction of a soft rock section, performing groove construction when the tunnel bottom and the secondary lining are not casted, detaching a sleeper during changing a tool, spreading a rail at the tunnel bottom, and performing next cycle. The method can be used for communication passage construction, caulking construction and contact net chute construction, and has the advantages of simplicity in process, short construction period, low construction cost, good popularization prospect and the like; and proved by practice, the method gains good economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction, in particular to a method for parallel construction of long-distance railway tunnel follow-up engineering and shield excavation. Background technique [0002] With the development of my country's high-speed railway construction, more and more projects use shield tunneling to construct railway tunnels. The shield method has been widely used in various tunnels, and is developing for long distances. The tunnel distance is generally greater than 5 kilometers. The shield method can only be used to build the tunnel at one time. However, the railway tunnel also has many follow-up projects such as tunnel bottom longitudinal beams, cable trenches, communication channels, and catenary. So far, the traditional construction method can only be shield tunneling. After the tunnel is formed, the subsequent construction cannot be carried out at the same time, which has the disadvantages of comp...

Claims

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Application Information

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IPC IPC(8): E21D9/06
Inventor 王宗勇雷军刘广钧宋津喜毋海军高治双徐家定张金柱赵常煜
Owner CHINA RAILWAY 12TH BUREAU GRP
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