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RATB combined shield receiving construction method

A combined shield technology, which is applied in the shaft lining, tunnel lining, underground chamber, etc., can solve the problems of endangering personnel safety, submerging shield machines, stations, sections, economic losses, etc. Institutional acceptance of risks, good economic benefits and social benefits

Pending Publication Date: 2020-07-10
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Accidents at the start and reception of shield tunneling are still emerging one after another, and serious ones even flood shield tunneling machines, stations, and sections, causing great economic losses and endangering personnel safety

Method used

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  • RATB combined shield receiving construction method
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  • RATB combined shield receiving construction method

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] The RATB combined shield receiving construction method includes the following steps:

[0030] S1. Arrange sleeve valve pipes along both sides of the tunnel 8 in the corresponding underground excavation section on the surface, and grout the surface subsidence area and shield receiving section; S2. Horizontal advanced curtain grouting in the cave; S3. Arrange dewatering well 1, well Control precipitation; S4, underground excavation at the receiving end; S...

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Abstract

The invention relates to the technical field of tunnel construction, in particularly to a RATB combined shield receiving construction method. The RATB combined shield receiving construction method includes the construction steps that S1, sleeve valve pipes are arranged along the two sides of a tunnel 8 on the surface corresponding to an undercutting section, and grouting is carried out on a surface subsidence area and a shield receiving section; S2, horizontal advanced curtain grouting is carried out in the tunnel; S3, a dewatering well 1 is arranged, and well pipe dewatering is carried out; S4, undercutting is carried out at a receiving end; S5, a blocking wall 2 is arranged; and S6, back pressing backfill is carried out after the construction of the blocking wall 2 is completed. The RATBcombined shield receiving construction method is wide in range, advanced in technology and high in safety performance, processes can be flexibly combined according to different working conditions, the adaptability is good, a reinforcement method and a tunnel opening sealing device have complementary advantages, the combination is close, the process connection continuity is good, and the reliability is high. The RATB combined shield receiving construction method is mainly applied to shield receiving construction.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, and more specifically, relates to a RATB combined shield receiving construction method. Background technique [0002] Long-distance diversion tunnels are more and more widely used in water conservancy projects. At the same time, due to the improvement of the degree of mechanization, the construction of shield method is more and more applied to water conservancy projects. With the maturity of shield construction technology and the accumulation of construction experience, the safety of the project has been significantly improved, but the starting and receiving of shield tunneling are still the biggest risk points in shield tunneling construction. Accidents at the origination and reception of shield tunneling are still emerging one after another, and serious ones even flood shield tunneling machines, stations, and sections, causing great economic losses and endangering personnel safety....

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D11/10E21D11/38E21D9/00E21F17/103E21B33/13
CPCE21D9/06E21D11/105E21D11/38E21D9/001E21F17/103E21B33/13
Inventor 徐铁强王林李自力陈乾李扬谢超冀兴俊郝伟邵海超温涛檀方华
Owner CHINA RAILWAY 12TH BUREAU GRP
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