三河口矿煤与瓦斯突出危险性敏感指标及临界值研究  

Research on sensitive index and critical value of coal and gas outburst danger in Sanhekou Mine

作　　者：张乾 ZHANG Qian(Shandong Energy Zaozhuang Mining(Group)Co.,Ltd.,Zaozhuang 277000,China)

机构地区：[1]山东能源枣庄矿业(集团)有限责任公司,山东枣庄277000

出　　处：《煤炭科技》2021年第4期18-21,27,共5页Coal Science & Technology Magazine

摘　　要：按照《防治煤与瓦斯突出细则》要求,根据三河口煤矿3上煤层特点,对其工作面突出危险性预测指标敏感性顺序及临界指标进行了研究。研究以调研现场动力现象及实验室研究分析相结合的方式进行,解决了难以取得符合要求样本的难题。根据获得的样本,采用区域临界指标为基准,分析出钻屑解吸指标K 1最为敏感,其次为钻屑量S。在此基础上确定了上述两指标的临界值范围,采用Fisher判别法判定钻屑解吸指标K 1临界值为0.4810 mL/(g·min 0.5),钻屑量S临界值为5.589 kg/m,将研究成果应用于现场,预测煤与瓦斯不突出率为100%,对矿井煤与瓦斯突出防治工作起到了有效的指导作用。According to the requirements of the"Detailed Rules for Prevention and Control of Coal and Gas Outburst"and the characteristics of the upper 3 coal seam in Sanhekou Coal Mine,the sensitivity sequence and critical index of the outburst risk prediction index of its working face were studied.The research was carried out by a combination of investigation of on-site dynamic phenomena and laboratory research and analysis,which solved the difficult problem of obtaining samples that meet the requirements.According to the samples obtained,using the regional critical index as the benchmark,the analysis showed that the drilling cuttings desorption index K 1 value was the most sensitive,followed by the drilling cuttings volume S value.On this basis,the critical value range of the above two indexes was determined,and the Fisher discriminant method was used to determine the critical value of the drilling cuttings desorption index K 1 value.The critical value was 0.4810 mL/(g·min 0.5).The critical value of S value was 5.589 kg/m.The research results were applied to the field,and the non-outburst rate of coal and gas was predicted to be 100%,which had played an effective guiding role in the prevention and control of coal and gas outburst in mines.

关 键 词：煤与瓦斯 突出危险性 敏感指标 临界值 

分 类 号：TD712[矿业工程—矿井通风与安全]