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根据通风网络与瓦斯防治理论分析 ,探讨应用大断面独头煤巷掘进工作面全负压风排瓦斯技术的可行性 ,以减少掘进头的瓦斯积聚 ,降低瓦斯爆炸事故发生率 ;分析讨论大断面独头煤巷的支护—压力体系、巷道周围瓦斯煤体内的应力场以及防治煤与瓦斯突出的影响因素 ;通过改变大断面独头煤巷支护形式 ,缩小煤体的应力集中区域 ,可以降低煤与瓦斯突出事故。
Based on the analysis of ventilation network and gas prevention and control theory, this paper discusses the feasibility of using gas technology of full negative pressure air drainage in driving face with large section and single head coal seam to reduce gas accumulation in heading and reduce the incidence of gas explosion accident. Analysis and discussion of large section Pressure system of single coal roadway, stress field in gas coal surrounding the roadway and influencing factors of preventing coal and gas outburst; by changing the support form of large section coal roadway and narrowing the stress concentration area of coal body, Reduce coal and gas outburst accidents.