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Construction process for buried type deep support of semi-open and semi-dark unsymmetrical pressure tunnel

A half-light and semi-dark construction technology, which is applied in mining equipment, earthwork drilling, bolt installation, etc., can solve the problems of landslides, tunnel construction support is not in place, etc., so as to reduce the probability of landslides and improve safety , the effect of enhancing the strength of the internal structure

Pending Publication Date: 2021-11-09
SINOHYDRO FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a construction process for buried deep support in semi-dark and semi-dark biased tunnels, aiming to solve the technical problem that the current tunnel construction support is not in place and easily causes landslides

Method used

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  • Construction process for buried type deep support of semi-open and semi-dark unsymmetrical pressure tunnel
  • Construction process for buried type deep support of semi-open and semi-dark unsymmetrical pressure tunnel
  • Construction process for buried type deep support of semi-open and semi-dark unsymmetrical pressure tunnel

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Embodiment Construction

[0043] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a construction process for buried type deep support of a semi-open and semi-dark unsymmetrical pressure tunnel. The semi-open and semi-dark unsymmetrical pressure tunnel comprises an open cut tunnel and a dark tunnel. The construction process comprises the steps that a plurality of anchoring holes are formed in the tunnel wall of the dark tunnel based on the preset tunnel entering requirement; rigid anchoring parts are put into the anchoring holes, and gaps are formed between the rigid anchoring parts and the hole walls of the anchoring holes; and the anchoring holes are filled with fillers until the anchoring holes are full of the fillers, and the fillers are combined with the rigid anchoring parts to form the tunnel support after the fillers are solidified so as to support the tunnel. According to the construction process for buried type deep support of the semi-open and semi-dark unsymmetrical pressure tunnel, the problem of deep supporting of the hole body section and the side wall of the unsymmetrical pressure tunnel can be solved, and the common problems of deformation and collapse of the side wall of the tunnel and the like in the engineering field due to failure of the supporting measure caused by damage of the supporting measure due to vibration of blasting operation are solved.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a construction technique for buried deep support in semi-dark and semi-dark bias tunnels. Background technique [0002] During the construction of water conservancy and hydropower projects, it is often necessary to build tunnels in mountains. Due to the geological structure and natural terrain asymmetry at the entrance and exit of the tunnel, bias pressure often occurs in the tunnel. At this time, the structure of the tunnel is subjected to complex forces. In order to ensure the safety of the underground structure construction and the surrounding environment, support measures are required to ensure the stability of the tunnel. [0003] At present, the common tunnel construction methods include underground excavation method, open excavation method and half-light and half-dark method. Among them, when using the half-light and half-dark method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D21/00
CPCE21D20/021E21D21/0026
Inventor 范庭梧王晓平庞辉生罗金贵孙成贺曹凯巩亦真
Owner SINOHYDRO FOUND ENG
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