Advanced curtain grouting construction method applied to high-pressure and water-rich karst tunnel

An advanced curtain and construction method technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as prone to landslides, water and mud inrush, high requirements for grouting technology, and complicated construction technology, so as to avoid grouting The effect is not up to standard, the incidence of water inrush is low, and the construction process is simple

Inactive Publication Date: 2020-04-10
渝黔铁路有限责任公司
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Problems solved by technology

[0003] During the construction of high-pressure water-rich karst tunnels, when there are soft rocks, water-rich, filled karst caves and other unfavorable geology in front of the tunnel face, excavation is carried out directly, which is prone to geological disasters such as landslides...

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  • Advanced curtain grouting construction method applied to high-pressure and water-rich karst tunnel
  • Advanced curtain grouting construction method applied to high-pressure and water-rich karst tunnel
  • Advanced curtain grouting construction method applied to high-pressure and water-rich karst tunnel

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0034] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses an advanced curtain grouting construction method applied to a high-pressure and water-rich karst tunnel. The advanced curtain grouting construction method applied to the high-pressure and water-rich karst tunnel includes the steps of advanced geological prediction, construction at two ends of a wall for grouting, drilling by a drilling rig, grout preparation, grouting during combination and detecting whether single hole grouting standards are met or not, if not, grout continues to be injected into a grouting hole, detection is conducted again until the requirements aremet, then whether grouting standards of a whole section are met or not is detected, if not, the grout is filled, and after the standards are met, the next stage of advanced curtain grouting construction is carried out. According to the advanced curtain grouting construction method applied to the high pressure and water-rich karst tunnel, the occurrence rate of water inrush is low, the constructionprocess is simple, the construction period is short, and the construction scheme is safer and more reliable.

Description

technical field [0001] The invention relates to the technical field of tunnel construction methods, in particular to an advanced curtain grouting construction method suitable for high-pressure water-rich karst tunnels. Background technique [0002] The distribution of karst areas in my country is very extensive, reaching nearly 3.4 million square kilometers, making it the country with the widest distribution of karst areas in the world. With the high-speed construction of major infrastructure projects such as transportation, water conservancy and hydropower in my country, more and more engineering facilities are gradually transferred underground and built in karst areas. At present, in terms of tunnel engineering, my country has become one of the countries with the largest construction scale and difficulty in the world. In the construction of many large, long and deep tunnels, they are faced with problems such as slow excavation, difficult support, and high maintenance costs...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/10
CPCE21D9/001E21D11/10
Inventor 张桥王明慧
Owner 渝黔铁路有限责任公司
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