Tunnel support structure and tunnel support construction method

A support structure and construction method technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as the overall sinking of the tunnel support structure, the convergence of the surrounding area of ​​the vault sinking, etc.

Active Publication Date: 2019-08-30
GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the commonly used control measure is to set four anchor bolts or small conduits with locking feet at the connection of the initial support I-beam arch. However, the traditional control measures cannot effectively control the extern

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  • Tunnel support structure and tunnel support construction method
  • Tunnel support structure and tunnel support construction method
  • Tunnel support structure and tunnel support construction method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0034] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0035] Unless otherw...

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Abstract

The invention discloses a tunnel support structure and a tunnel support construction method. First pressure-bearing parts penetrate through first arch frames and thus make direct contact with the first arch frames, thus force transmission between the first pressure-bearing parts and the first arch frames is smooth, the first arch frames can more reliably transmit borne external force to first anchor pipes and second anchor pipes, overall sinking of the tunnel support structure or tunnel arch apex sinking and peripheral surrounding rock convergence are effectively controlled, and the situationthat due to the welding quality problem or insufficient shear capacity of a weld joint, the external force borne by the first arch frames cannot be effectively transmitted is avoided; meanwhile, everytwo adjacent first arch frames are connected together through a connector, the contact area with a lower step soil body which has not been excavated yet is expanded, and the carrying capacity of thesoil body to the first arch frames is improved; and in addition, every two adjacent bases are connected together through a connector to form a stable transverse cantilever beam, and sinking of the overall structure of the first arch frames due to not-timely foot connecting after lower step excavation is avoided.

Description

technical field [0001] The invention relates to the technical field of tunnels, in particular to a tunnel support structure and a tunnel support construction method. Background technique [0002] With the rapid development of highways, highway tunnels have become an indispensable building for highways. In order to shorten the distance between the two places, drilling holes in mountains has become the best choice. With the increase in the amount of tunnel construction, different With more and more different geological formations, tunnels with weak surrounding rocks will inevitably be encountered. [0003] Weak surrounding rock tunnel refers to the surrounding rock whose surrounding rock grade is V or VI, and has the following characteristics: 1. The surrounding rock is weak in rock quality, low in bearing capacity, well-developed in joints and fissures, and broken in structure. Generally, shale, Soft rock strata represented by mudstone, schist, carbonaceous rock, and phyllit...

Claims

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Application Information

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IPC IPC(8): E21D11/18E21D21/00E21D20/00
CPCE21D11/18E21D20/00E21D21/00E21D21/0086
Inventor 李国安聂玉文梁淦波王哲王超刘二强李红中
Owner GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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