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众所周知,回采工作面上的三角是整个采场工作空间瓦斯积聚最高的地方,常常因其瓦斯浓度或绝对涌出量大于“安全规程”之规定而被迫停产,甚至因此而造成人身伤亡。所以,研究上三角瓦斯积聚的原因,并相应地对其进行积极有效的防治,这对保证安全生产是很有必要的。本文用采场空气流动规律图解法分析上三角瓦斯积聚的原因,并初步提出了防治的措施。
As we all know, the triangle on the mining face is the place with the highest accumulation of gas in the working area of the stope. It is often forced to stop production due to its gas concentration or absolute emission exceeding the “safety rules” or even personal injury. Therefore, it is very necessary to study the reason of the methane accumulation in the upper Triangle and carry out active and effective prevention and control accordingly. In this paper, the reason of gas accumulation in the upper triangle is analyzed by the graphic method of air flow in stope, and the measures of prevention and control are preliminarily proposed.