Fabricated tunnel support system and construction method thereof

A construction method and prefabricated technology, applied in tunnels, tunnel linings, shaft equipment and other directions, can solve problems such as cracking, leaking water lining, large deformation, etc., and achieve the effects of low cost, reliable project quality, and improved self-bearing capacity.

Inactive Publication Date: 2016-07-20
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to address the defects and deficiencies in the prior art, to provide a tunnel assembly type support system and its construction method, w...

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  • Fabricated tunnel support system and construction method thereof
  • Fabricated tunnel support system and construction method thereof
  • Fabricated tunnel support system and construction method thereof

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] see figure 1 and figure 2, the present invention includes advanced support, flexible support and rigid support, and the advanced support, flexible support and rigid support are performed in sequence according to the construction procedures, and the advanced support is arranged along the outline of the tunnel arch. 1. The pre-reinforced surrounding rock is formed by injecting cement-sodium silicate double liquid slurry into the surrounding rock through the advanced small conduit 1. The flexible support is assembled by prefabricated foam concrete blocks 2, and the prefabricated foam concrete blocks 2 are connected by bolts. For connection, the joints between all the prefabricated foam concrete blocks 2 are sealed and waterproofed with elastic rubber gaskets 7, and the elastic rubber gaskets 7 are bonded to the prefabricated foam concre...

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Abstract

The invention discloses a fabricated tunnel support system and a construction method thereof. The fabricated tunnel support system comprises main structures such as an advanced support, a flexible support and a rigid support, and all structural layers are constructed sequentially according to construction processes. The advanced support is formed by reinforcing surrounding rocks by advanced small pipe grouting, the flexible support is formed by splicing prefabricated foam concrete blocks through bolts, joints among all the prefabricated foam concrete blocks are subjected to sealed waterproofing through elastic rubber gaskets, the rigid support comprises concrete-filled steel tube arches and prefabricated reinforced concrete segments, the concrete-filled steel tube arches are vertically arranged at intervals along the circumferential direction of a tunnel, the positions among the concrete-filled steel tube arches are filled with the prefabricated reinforced concrete segments, every two adjacent concrete-filled steel tube arches are connected through longitudinal rebars, steel tubes are circumferentially connected through sleeves, and the prefabricated reinforced concrete segments are connected through bolts. The fabricated tunnel support system is simple in process, rapid in construction progress, high in quality and good in waterproof effect while tunnel structural safety is guaranteed effectively.

Description

【Technical field】 [0001] The invention relates to the technical field of tunnel construction support, in particular to a tunnel assembly support system and a construction method thereof. 【Background technique】 [0002] In recent years, with the rapid development of traffic construction in the loess area of ​​western my country, a large number of loess tunnels have been built in Henan, Shaanxi, Gansu, Qinghai and other places. The design and construction of loess tunnels still use the new Austrian method widely used in rock tunnels in the past. Shotcrete is used as the primary support. After the deformation is basically stable, the secondary lining is applied. The secondary lining is mainly used as a safety reserve. However, due to the great difference in the mechanical properties of loess and rock, it has significant water collapsibility, and water is bound to be entrained in shotcrete, and the loess surrounding rock absorbs the moisture in the concrete and tends to become u...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/10E21D11/08E21D11/38E21D9/04
CPCE21D9/04E21D11/003E21D11/08E21D11/10E21D11/385
Inventor 赖金星昝文博谢永利张玉伟来弘鹏李又云王亚琼刘禹阳邱军领樊浩博
Owner CHANGAN UNIV
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