矿井硫化氢危险性分源分级评估方法研究及应用

Research and application of the evaluation method of source separation and classification of hydrogen sulfide hazard in mine

受煤矿开采深度等条件影响,硫化氢浓度较高的矿井在煤层回采时极有可能出现硫化氢异常涌出现象,严重威胁工人的生命安全。针对采煤工作面、原煤层、采空区3个区域硫化氢赋存特点,提出硫化氢分源分级评估原则、思路、依据及标准,构建出硫化氢分源分级评估体系,将工作面划分为低、中、高和超高硫化氢危险4个区域,将采空区和原煤层划分为易治理、难治理和较难治理区域。研究成果对矿井硫化氢的治理具有理论指导和实际意义。

Under the influence of coal mining depth and other conditions,abnormal emission of hydrogen sulfide is likely to occur in the process of coal extraction in mines with high concentration of hydrogen sulfide,which is a serious threat to the life and safety of workers.According to the characteristics of hydrogen sulfide deposit in working face,raw coal seam and goaf,the principle,idea,basis and standard of source separation and classification of hydrogen sulfide were put forward.The evaluation system of source separation and classification of hydrogen sulfide was constructed,and the working face was divided into four regions of low,medium,high and ultra-high hydrogen sulfide hazard area,the goaf and the row coal seam were divided into areas that are easy to control,difficult to control and relatively difficult to control.The research results have theoretical guidance and practical significance for the control of hydrogen sulfide in mines.