煤与瓦斯突出瓦斯压力临界值确定方法的探索
Probe About the Determine Method of Gas Pressure Threshold Value of Coal and Gas Outburst
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摘要: 煤与瓦斯突出瓦斯压力临界值的确定一直是影响煤矿安全生产的技术难题,未确定瓦斯压力临界值之前,矿井一般采用《煤与瓦斯突出规定》(以下简称《规定》)的参考值0.74 MPa。针对这一局限性,结合煤与瓦斯突出综合假说,应用弹性力学与介质力学的理论成果建立了煤与瓦斯突出的物理力学模型,提出了一种新的瓦斯突出压力临界值的确定方法。研究结果表明,该方法具有广泛适用性,克服了一味照搬《规定》的盲目性,对矿井防突具有一定的指导意义。Abstract: The determination on gas pressure threshold value of coal and gas outburst has always been a difficult technical problem which affects safe production of coal mines. Before determining threshold value of gas pressure, it generally adopts the reference value 0.74 MPa from Coal and Gas Outburst Prevention Regulations in coal mines. For this limitation, combining with the comprehensive hypothesis about coal and gas outburst, using the theoretical results of elasticity and mechanics, it establishes a physical and mechanical model of coal and gas outburst, proposes a new determination method about the pressure threshold value of coal and gas outburst. The results show that this method has broad applicability, overcomes the blindness of copying the Coal and Gas Outburst Prevention Regulations,has a certain guiding significance for coal mines to prevent coal and gas outburst.
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Keywords:
- coal and gas outburst /
- threshold value /
- mechanical model
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