Ventilation method for long-distance high-gas tunnel construction

A technology for tunnel construction and ventilation methods, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., to achieve the effects of solving tunnel ventilation, strengthening transportation capacity, and improving construction efficiency

Active Publication Date: 2017-07-14
THE 4TH ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a ventilation method and construction method for long-distance high-gas tunn

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  • Ventilation method for long-distance high-gas tunnel construction
  • Ventilation method for long-distance high-gas tunnel construction
  • Ventilation method for long-distance high-gas tunnel construction

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Embodiment Construction

[0028] 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 some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0029] Such as Figure 1-6 Shown, a kind of ventilation method for long-distance high-gas tunnel construction according to the embodiment of the present invention, comprises the following steps:

[0030] S1 When the face of the front hole is excavated and there is no cross passage between the front hole 1 and the parallel guide hole 2, the first fan and the first air duct 3 are installed at the entrance of the main hole 1. The first air duct 3 Extend to the face of the main tunnel for air su...

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Abstract

The invention discloses a ventilation method for long-distance high-gas tunnel construction. The method comprises the following steps that S1 a first air duct is arranged at a hole of a positive hole, and a second air duct is arranged at a hole of a parallel guide hole; S2 a third air duct extends to the ahead of the positive hole tunnel face to supply air; S3 the first air duct is used for supplying air to the positive hole tunnel face, the second air duct is used for supplying air to the parallel guide hole tunnel face, and the third air duct extends to the ahead of the positive hole tunnel face to supply air; S4 the first air duct is used for supplying air to the positive hole tunnel face, the second air duct is used for supplying air to the parallel guide hole tunnel face, the third air duct is used for supplying air to the ahead of the positive hole tunnel face and a fourth air duct extends to the ahead of the positive hole tunnel face to supply air; S5 the second air duct is used for supplying air to the parallel guide hole tunnel face, the fourth air duct is used for supplying air to the ahead of the positive hole tunnel face and the third air duct extends to the ahead of the positive hole tunnel face to supply air; S6 the third air duct is used for supplying air to the positive hole tunnel face and the fourth air duct extends to the ahead of the positive hole tunnel face to supply air. According to the ventilation method for long-distance high-gas tunnel construction, the ventilation efficiency is optimizes, the problem of tunnel ventilation is solved, the transport capacity is strengthened and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a ventilation method for long-distance high-gas tunnel construction. Background technique [0002] The Old House Tunnel is located in Qilin Township, Xingwen County, Yibin City, Sichuan Province, with a total length of 6423m and a single uphill route of 20‰, located on a right-side curve with a radius of 7000m. The tunnel passes through the high gas and soluble rock section of the coal seam. The initial risk level of the tunnel is rated as "high", and the entrance work area is a high gas work area. After geological surveys, the tunnel needs to pass through two coal seams, which are rich in gas, so the ventilation of the tunnel is extremely critical. [0003] Aiming at the problems in the related technologies, no effective solution has been proposed yet. Contents of the invention [0004] Aiming at the above-mentioned technical problems in the related art, the pres...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F1/08
CPCE21F1/006E21F1/08
Inventor 张存兴周明闫肃李永刚何佩军姚四海陈胜旺
Owner THE 4TH ENG CO LTD OF CHINA RAILWAY 16TH BUREAU GRP CO LTD
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