The Influence of Mining Height on Combinational key Stratum Breaking Length

摘要：

Mining height of coal seams plays a major role in the failure of the key stratum as well as combinational key stratum. Based on analyzing the relevant parameters of combinational key stratum, applying numerical analysis, the influence of mining height on combinational key stratum fracture, which is also the influence on the main roof weighting step, is studied and the computational formula of the main roof first weighting step in shallow seams is revised. The first weighting step of the Da-liu-ta 1203 working face, derived from the calculation through the revised formula, is very close to the actual measurement. The consistency proves that the revised formula has certain adaptability in calculating combinational key stratum weighting step in the thick loose layers shallow seams.

关键词： mining height influence combinational key stratum breaking length

作者: Zhang Jie

作者单位: School of Energy Engineering, Xian University of Science & Technology, Xian 710054, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 1369-1375

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）