摘要
为确定残采区旧空区煤柱稳定性的临界宽度及对其下方回采工作面稳定性的影响规律,通过理论分析得出临界失稳宽度的计算公式,并算出王坡矿旧空区煤柱能够保持稳定的临界宽度为10m,理论分析与数值模拟的结果相符。
In order to determine the critical width of the coal pillar stability in the old goaf of the residual mining area and its influence on the stability of the working face under it,the calculation formula of the critical instability width is obtained through theoretical analysis,and the critical width of the coal pillar in the old goaf of Wangpo Mine is calculated to be 10m,which is consistent with the results of numerical simulation.
作者
刘建伟
徐昕
康国峰
Liu Jian-wei;Xu Xin;Kang Guo-feng(Tongmei Guodian Tongxin Coal Mine Co.,Ltd.,Shanxi Datong 037000)
出处
《山东煤炭科技》
2020年第7期69-71,共3页
Shandong Coal Science and Technology
关键词
残采
空区
煤柱
模拟
residual mining
goaf
coal pillar
simulation
