摘要
对安家岭露天矿端帮采煤主要技术参数进行了理论计算与分析 ,并应用FLAC数值模拟软件对端帮开采煤柱间围岩应力动态演变过程进行了模拟研究 ,得出端帮开采煤柱间应力是相互影响的 ,围岩垂直应力分布由“微马鞍形”向“马鞍重叠”及“平缓马鞍形”转变的动态演变规律 ;安家岭露天矿端帮采煤在采宽累计超过 80～ 10 0m时 ,围岩应力基本趋于稳定 。
The main technical parameters of coal mine high wall mining are analyzed through theoretical computation and the dynamic evolution process of surrounding rock stresses among pillars is simulated by using FLAC software. The results show that the stresses among pillars influence mutually and that the dynamic evolution laws of the distribution of vertical stresses is from 'tiny saddle shape' to 'overlapping saddle shape' and finally to 'smooth saddle shape'. The study results also show that the stresses of the surrounding rock tend to be steady when the accumulative total mining width is more than 80～100 m and that the main technical parameters determined are reliable and reasonable.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2001年第5期496-500,共5页
Journal of China Coal Society
