U型通风放煤工作面采空区煤自燃研究  

Research on Coal Spontaneous Combustion in Goaf of U-Shaped Ventilation Coal Caving Working Face

作　　者：冷岳魏 LENG Yuewei(Dongqu Mine,Shanxi Coking Coal Group Co.,Ltd.,Taiyuan,Shanxi 030200,China)

机构地区：[1]山西焦煤集团有限责任公司东曲矿,山西太原030200

出　　处：《自动化应用》2024年第14期163-166,共4页Automation Application

摘　　要：瓦斯与煤自燃复合灾害已成为煤矿重特大事故的常见模式。为揭示高抽巷(HLDR)的U型通风综放工作面采空区复合灾害特征,以东曲矿19303工作面为例,借助COMSOL模拟不同供风条件下,高抽巷的U型通风综放工作面通风方式和采空区瓦斯浓度场分布规律,并划分采空区瓦斯与煤自燃复合灾害区域的定量。结果表明,现场实验数据与仿真结果相符合,验证了仿真的有效性,模拟结果为采空区灾害的防治提供了重要的理论依据和实践指导。The combined disaster of gas and coal spontaneous combustion has become a common mode of major accidents in coal mines.To reveal the composite disaster characteristics of the U-shaped ventilation fully mechanized top coal caving working face in high level extraction roadway(HLDR),taking the 19303 working face in Dongqu mine as an example,COMSOL was used to simulate the ventilation mode and gas concentration field distribution of the U-shaped ventilation fully mechanized top coal caving working face in high level extraction roadway under different air supply conditions,and to quantitatively divide the composite disaster areas of gas and coal spontaneous combustion in the goaf.The results show that the on-site experimental data is consistent with the simulation results,verifying the effectiveness of the simulation.The simulation results provide important theoretical basis and practical guidance for the prevention and control of goaf disasters.

关 键 词：U型通风 煤自燃瓦斯爆炸 复合灾害相似理论 数值模拟 

分 类 号：TD752.2[矿业工程—矿井通风与安全]