基于模糊聚类方法的复杂煤层煤与瓦斯突出危险性分析

发布时间：2018-03-30 03:32

本文选题：煤与瓦斯突出　切入点：复杂煤层　出处：《煤矿安全》2017年06期

【摘要】：为研究复杂条件下煤层煤与瓦斯突出危险性的预测方法,以通顺煤矿2~#煤层为例,对其区域性突出危险性预测敏感指标进行筛选,通过井下直接测定法和实验室对比分析得出瓦斯含量值作为主要判定指标(敏感指标),临界值为8 m~3/t,瓦斯压力作为辅助判定指标,参考临界值定为0.60 MPa。并通过模糊聚类方法分析得出通顺煤矿2~#煤层同一工作面△h_2的相对敏感度最大,K_1次之,S最小,所以选取△h_2作为通顺2~#煤层煤与瓦斯突出危险性预测的敏感指标,K_1和S作为辅助性的参考指标。运用统计学理论和概率分布确定出通顺2~#煤层煤与瓦斯突出危险性预测敏感指标为△h_2,临界值定为180 Pa(湿煤临界值为160 Pa);K_1值作为局部预测的辅助指标,参考临界值为0.41 m L/(g·min~(1/2))(干煤);S反映煤层应力大小,亦作为辅助指标,参考临界值为5.10 kg/m(干煤)。
[Abstract]:In order to study the prediction method of coal seam and gas outburst risk under complex conditions, taking Tongshun coal seam No. 2 as an example, the sensitive indexes of regional outburst risk prediction are screened. Through direct underground measurement and laboratory comparative analysis, it is concluded that the value of gas content is the main index (sensitive index), the critical value is 8 m ~ 3 / t, and the gas pressure is regarded as the auxiliary judgment index. The critical value of reference is 0.60 MPA. Through the analysis of fuzzy clustering method, it is concluded that the relative sensitivity of h2 in the same coal face of 2Li # coal seam in Tongshun Coal Mine is the greatest and that of KSP 1 is the least. Therefore, h-2 is selected as the sensitive index of coal and gas outburst risk prediction in Tongshun 2 # coal seam and S as the auxiliary reference index. The coal and gas outburst risk of Tongshun 2 # coal seam is determined by using statistical theory and probability distribution. The risk prediction sensitivity index is h2and the critical value is 180 Pa. (the wet coal critical value is 160 Pa-1) as the supplementary index for local prediction. The critical value of reference is 0.41 mL / min / 1 / 2 / 2 (dry coal) reflects the stress of coal seam, and is also used as a supplementary index. The reference critical value is 5.10 kg / m ~ (-1) (dry coal).
【作者单位】：煤炭科学技术研究院有限公司安全分院;煤炭资源高效开采和洁净利用国家重点实验室(煤炭科学研究总院);
【基金】：“十三五”国家科技重大专项资助项目(2016ZX05045002-006) 国家自然科学基金资助项目(51504137) 北京市自然科学基金资助项目(2164075)
【分类号】：TD713

【相似文献】