Execution system of gas tunnel outburst prevention comprehensive measures
An outburst prevention measure and tunnel technology, applied in the directions of gas discharge, dust prevention, fire prevention, etc., can solve problems such as large outburst risks and achieve the effect of preventing and controlling gas outburst problems.
Active Publication Date: 2010-12-29
CHINA RAILWAY NO 2 ENG GRP CO LTD
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On-site analysis, there may be a large outstanding risk
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[0023] Such as figure 1 Shown: a gas tunnel anti-burst comprehensive measures implementation system, the following steps are taken:
[0024] Step 1. Firstly, the coal or rock strata of the tunnel are predicted within 60M along the direction of the tunnel, and the prediction results are divided into non-dangerous areas, threatened areas and dangerous areas;
[0025] Step 2, deal with the danger zone and the threat zone respectively:
[0026] (1) Forecasting the working face in the dangerous area, the prediction result is divided into a non-dangerous face and a dangerous face, and the non-dangerous face is excavated under the premise of taking safety measures;
[0027] (2) Take safety measures for the threat area, advance the excavation 40M on the premise of taking safety measures, and then predict the working face, and divide the prediction results into threat face and dangerous face;
[0028] During the excavation of the entire tunnel, when the predicted result is a threat s...
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The invention discloses an execution system of gas tunnel outburst prevention comprehensive measures; regional forecast of a coal layer or a rock layer of a tunnel within the range of 60M is firstly carried out along the trend of the tunnel, and forecast results are divided into a non-hazardous area, a threatening area and a hazardous area; the treatment is respectively carried out on the hazardous area and the threatening area: outburst prevention measures are taken on hazardous surfaces obtained by working surface forecast in the threatening area and the hazardous area to eliminate or reduce the dangers; the effects of the outburst prevention measures are checked; when the effect check result of the outburst prevention measures does not achieve the desired effects or is ineffective, theoutburst prevention measures are taken again; when the effect check result of the outburst prevention measures is in the control range, the excavation work is carried out under the premise of adopting safety measures. The invention discloses the execution system of comprehensive outburst prevention techniques, and the execution system comprises comprehensive matching applications of forecast and prediction of outburst, outburst prevention technical measures, measure effect check, safety measures and other aspects, thereby realizing comprehensive and effective gas outburst prevention.
Description
technical field [0001] The invention relates to the field of tunnel construction, in particular to a gas tunnel anti-burst comprehensive measure execution system. Background technique [0002] Tunnel coal and gas outburst refers to the sudden ejection of coal and gas during excavation. This ejection produces a large impact force in a short period of time (minutes or even seconds), destroys the working face, and discharges a large amount of coal, rock flow and gas from the depth of the coal seam, which can destroy the roadway facilities and cause suffocation, burning and Accidents such as explosions and coal and rock flow burial. [0003] According to incomplete statistics, there have been more than 30,000 coal and gas outbursts in countries around the world. The outburst with the largest intensity was the coal and gas outburst that occurred in the Gagarin Mine in the Donbass mining area of the former Soviet Union in 1969. The volume is 14,200 tons, and the outburst gas i...
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IPC IPC(8): E21F5/00E21F7/00E21F11/00
Inventor 丁睿卿三惠何开伟廖波
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD