采空区瓦斯煤火耦合灾害伦理风险评估

Ethical risk assessment of coupled disaster of gas and coal fire in goaf

针对高瓦斯易自燃煤层采空区瓦斯抽采与煤自燃防治相互矛盾、相互制约的特点;分析瓦斯煤火耦合灾害的致灾机理,确定了影响采空区瓦斯与煤自燃耦合灾害的主控因素,识别了现有瓦斯与煤自燃防治技术潜在的伦理风险,基于层次分析法建立了瓦斯煤火耦合灾害伦理风险评估模型;并在孔庄煤矿7436工作面进行了现场应用。结果表明:7436工作面回采期间发生煤自燃的权重为0.262 3,发生瓦斯灾害的权重为0.205 4,瓦斯煤火耦合灾害的发生权重为0.529,工作面回采期间应特别关注瓦斯煤火耦合灾害的发生,且在单独治理煤自燃灾害和瓦斯灾害时,煤自燃灾害发生的概率高于瓦斯灾害。

In the goaf of the high gas and spontaneous combustion coal seam, the gas drainage is mutually contradictory and restrictive to the prevention and control of coal spontaneous combustion. For this, we analyzed the disaster mechanism of gas and coal fire coupling disaster, determined the main factors affecting the coupling disaster, and identified the potential ethical risks of the existing gas and coal spontaneous combustion prevention technology. Based on analytic hierarchy process, the ethical risk assessment model of gas and coal fire coupling disaster was established and applied in 7436 working face of Kongzhuang Coal Mine. The results show that the weight of the coal spontaneous combustion during the mining of 7436 working face is 0.262 3, the weight of the gas disaster is 0.205 4, and the weight of the gas and coal fire coupling disaster is 0.529. Special attention should be paid to the occurrence of the gas and coal fire coupling disaster during mining. The probability of coal spontaneous combustion disaster is higher than that of gas disaster when coal spontaneous combustion disaster and gas disaster are treated respectively.