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Construction method of passage of large-section tunnel by water diversion fault

A construction method and technology of water-conducting faults are applied in the field of roadway construction to achieve the effects of strong systematicness, clear thinking and high promotion value

Inactive Publication Date: 2012-12-05
INNER MONGOLIA FUCHENG MINING CO LTD
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  • Abstract
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Problems solved by technology

[0003] The purpose of this invention is to propose a safe and effective construction method for the problem of safely crossing water-conducting faults during the construction of large-section roadways

Method used

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Embodiment Construction

[0024] Those skilled in the art can implement the method according to the content of the invention, and will not be described in detail here. The advantages of the present invention are further illustrated below through an embodiment.

[0025] For example, a mine needs to pass through the Lijia fault when designing the track Shimen roadway in the sixth mining area. In view of the actual situation, the technicians first used the three-dimensional seismic exploration technology to find out the development of the geological structure in detail on the Lijia fault, and then used the ground transient electromagnetic detection technology to find out the distribution of the water-rich area near the fault and determine the specific location of the Lijia fault. On this basis, the excavation level and layout of the roadway were determined, the protective coal pillar was calculated to be 116m, and the distance from the Lijia fault was set to be 176m as the water detection warning line. M...

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Abstract

The invention discloses a construction method of passage of a large-section tunnel by water diversion fault. The construction method includes: firstly, exploring the fault to provide material basis for next tunnel design; secondly, laying out the tunnel design according to exploration conditions; thirdly, grouting and ponding before the tunnel passes the fault; and fourthly, supporting the surrounding rock when the tunnel passes the fault. The construction method is a complete technique integrating exploring, dredging, gushing prevention, and floor-ceiling reinforcement and allowing for passage of the large-section tunnel by the water diversion fault. Supporting measures are taken in response to different conditions, and safety of the tunnel in long-term use is guaranteed.

Description

technical field [0001] The invention relates to roadway construction technology. Background technique [0002] In the field of mining, large-section roadways refer to underground roadways with a section of more than 20 square meters. In some mining areas with complex hydrogeological conditions, large static water reserves, high water pressure, and well-developed faults, it is necessary to pass through such water-conducting faults when excavating roadways, and water inrush accidents are likely to occur if insufficient measures are taken. At present, there is some water control experience in this type of ordinary roadway excavation, but further research is needed for the development of roadways with large cross-sections that pass through faults, which poses a great safety threat to construction. Contents of the invention [0003] The purpose of the invention is to propose a safe and effective construction method for the problem of safely crossing a water-conducting fault du...

Claims

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Application Information

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IPC IPC(8): E21D9/14E21D11/10E21D11/38E21F16/02E21D20/02G01V1/00G01V3/00
Inventor 秦文露蒋成张开峰
Owner INNER MONGOLIA FUCHENG MINING CO LTD
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