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Quick construction method of tunnels traversing unfavorable geology

A construction method and poor technology, used in tunnels, tunnel linings, underground chambers, etc., can solve the problems of many processes and affect the construction period, and achieve the effect of less joints, ensuring construction progress, and good waterproof effect.

Inactive Publication Date: 2014-10-15
CHINA ROAD & BRIDGE
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Problems solved by technology

However, due to the constraints of terrain and geological conditions, if the conventional method is used for construction, there will be many procedures, which will affect the construction period. How to reasonably organize and optimize the construction progress on the premise of ensuring safety and quality has become the focus of many participating units.

Method used

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Embodiment Construction

[0019] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] This specific implementation provides a kind of rapid construction method for tunnel crossing bad geology, comprising the following steps:

[0021] S1. Carry out pre-construction karst survey and geological survey, and select a suitable layered and block excavation plan to facilitate the stability of the excavated surrounding rock;

[0022] S2, using methods such as advanced pipe shed or advanced grouting to carry out advanced reinforcement of the formation;

[0023] S3. Use controlled blasting or pre-splitting blasting to break the hole, dig the main hole inward along the hole, carry out support treatment for the main hole, strengthen t...

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Abstract

The invention discloses a quick construction method of tunnels traversing unfavorable geology. The method includes the following steps: performing pre-construction karst survey and geological survey, and selecting an appropriate layered and partitioned excavation scheme for the sake of stability of excavation surrounding rock; adopting an advanced pipe roof or advanced grouting method and the like to perform advanced natural ground reinforcement; adopting a controlled blasting or presplitting blasting form and the like to perform tunnel blasting, excavating a main tunnel inwards along a tunnel portal, subjecting the main tunnel to supporting treatment, enhancing supporting intensity of a key part, and constructing an inverted arch so as to close an excavation face; and reinforcing a tunnel foundation. The construction scheme for tunnel portal engineering, the main tunnel, a first side tunnel and a second side tunnel needs to be optimized and determined according to geological conditions of the tunnels before construction, construction period is shortened to a certain extent, industrial modular processing and production of waterproof steel plates is adopted, mounting is facilitated, few joints exist, waterproof effect is good, and construction progress can be guaranteed.

Description

technical field [0001] The invention relates to a construction method, in particular to a rapid construction method for tunnels passing through unfavorable geology. Background technique [0002] With the rapid development of social economy and transportation network, the double-arch long-span tunnel has represented the leading development direction of municipal tunnel engineering. For large-scale infrastructure construction, the requirements for construction period indicators are getting higher and higher. However, due to the constraints of terrain and geological conditions, if the conventional method is used for construction, there will be many procedures, which will affect the construction period. How to reasonably organize and optimize the construction progress on the premise of ensuring safety and quality has become the focus of many participating units. . Contents of the invention [0003] In order to solve the above problems, the present invention provides a rapid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/14E21D11/38
Inventor 陈平宋战平李刚栾桂涛田珣冯占强牛泽林
Owner CHINA ROAD & BRIDGE
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