Fast prediction for outburst risk before coal un-covering in shaft and cross-cut

摘要：

In this paper, we describe the principle, technique, and steps of fast predicting the outburst risk before coal un-covering in shaft and cross-cut, including the selection of indexes for the prediction, fast test of gas pressure, coring technique for obtaining an whole coal core, and the determination of outburst parameters. Using this technique, we can finish testing the original gas pressure of coal within 20 h, making it possible to accurately predict the outburst risk before coal un-covering in shaft and cross-cut in 3～5 days. In addition, we can, according to the prediction result, give out the residual pressure and the smallest pre-drainage rate of gas. The comparison of prediction data among more than 10 shafts and cross-cuts shows that the index of initial gas relief expansion energy can more accurately reflect the outburst risk of coal seams.

关键词： coal un-covering in cross-cut gas pressure fast prediction ezpansion energy in initial release

作者: Jiang Cheng-lin Chen Song-li Li Xiao-wei Tang Jun Chen Yu-jia Wu Ai-jun Lv Shu-wen

作者单位: Facuity of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China School of Information and Electrical Engineering, China University of Mining & Technology, Xuzhou 22

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-8

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）