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Author(s): |
zhong-qing Li, Institute of Resource and Safety, Anhui University of Science and Technology, Huainan 232001, China
Ze-gong Liu, Institute of Resource and Safety, Anhui University of Science and Technology, Huainan 232001, China |
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Abstract: |
The outburst in crosscut exposing is known as one of the heaviest in coal mine. So it is necessary to beAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.forecasted before exposed. This is always the key work of preventing outburst in coal mine. Based on the research ofAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.the theory of outburst danger forecast in crosscut exposing, the paper took the on-site case in Zhangji Coal Mine ofAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.Huainan Mining Group. The drills were arranged reasonably before exposing, and then the parameter ΔP and f wereAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.measured in laboratory. So the danger of coal and gas outburst was forecasted by the comprehensive index method. IfAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.that was the danger face, the prevention measures should be taken according to regulations. When excavating got to theAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.vertical distance of 5 and 3 m to coal seam, the boreholes were used to release pressure and to drainage gas. Then, itAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.was tested by measuring the parameter k1 and ΔP. The exposing went on after it was out of danger. In a word, as theAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.multi-parameter indexes were used to forecast the outburst danger during the crosscut exposing, the safety wereAbstract: In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gaspressure.improved.
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