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Supporting tooling system for multi-layer inverted arch construction of salt rock tunnel formation and construction method

A technology for tunnels and salt rock, applied in the supporting tooling system and construction field of multi-layer inverted arch construction in salt rock tunnel formation, can solve problems such as conventional equipment and processes cannot meet requirements, increase curvature and depth, etc., and is conducive to on-site operations. , Conducive to the effect of working time

Pending Publication Date: 2020-08-04
中铁二局第二工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Different from conventional tunnels, the salt rock section needs to set up more water-resistant layers at the bottom of the tunnel, which is equivalent to constructing two layers of inverted arches, and increases the curvature and depth. Conventional equipment and processes cannot meet the requirements

Method used

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  • Supporting tooling system for multi-layer inverted arch construction of salt rock tunnel formation and construction method
  • Supporting tooling system for multi-layer inverted arch construction of salt rock tunnel formation and construction method
  • Supporting tooling system for multi-layer inverted arch construction of salt rock tunnel formation and construction method

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Embodiment Construction

[0031] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. The components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ...

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Abstract

The invention discloses a supporting tooling system for multi-layer inverted arch construction of salt rock tunnel formation. The supporting tooling system includes a fully enclosed formwork and a self-propelled long trestle. The fully enclosed formwork is provided with an end stop plate and a middle long formwork distributed in the axial direction of a tunnel, a preset distance is set between themiddle long formwork and a tunnel operation zone wall surface, the fully enclosed formwork is enclosed with the tunnel operation zone wall surface to form an area to be filled with concrete, and theself-propelled long trestle is used to assist the movement of the middle long formwork. The fully enclosed formwork is adopted for pouring so as to ensure the shape, size and construction quality of apouring structure, especially the pouring of a water-proof structure, and the self-propelled long trestle can meet the requirements of the process and traffic structure.

Description

Technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a supporting tooling system and a construction method for a salt rock tunnel formation multi-layer invert construction. Background technique [0002] During the construction of the Friendship Tunnel of the China-Laos Railway, it encountered salt rock geology, of which the highest salt content reached 80%. During the construction, it was discovered that the tunnel inverted, the filled concrete cracked and swelled, and the molded-in lining concrete appeared longitudinal and circumferential cracks. Shear failure of the side wall. Due to the high salt content and complex composition of the salt rock formation of the Friendship Tunnel, it is extremely corrosive to metal materials. The tunnel construction disturbs the equilibrium state of groundwater, which causes the salt rock to dissolve, transfer and recrystallize, thereby changing the confining pressure of the tunnel. As a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/38
CPCE21D11/10E21D11/102E21D11/38
Inventor 杨家松朱凌杨世忠刘世杰彭明忠白小可李锋刚杨龙伟辜文凯关寿东蒋礼魏远洋刘志韬罗仁立
Owner 中铁二局第二工程有限公司
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