摘要
采用具有2层亚关键层的采场矿压模型,通过力学分析,给出相邻亚关键层破断对采场来压步距影响的计算公式,并用具体算例及其数值模拟说明了相邻亚关键层破断与采场矿压所受影响间的相互关系.
A model of rock pressure around longwall face with two inferior key stratum was considered.Based on the mechanical analysis, formulas of broken length were obtained for the breakage of the two inferior key stratum.The effect of inferior key strata breaking on mining pressure around longwall face was discussed by calculating and numerical simulating a concrete example.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第3期257-259,共3页
Journal of China Coal Society
基金
国家杰出青年科学基金资助项目(50225414)
博士点基金资助项目(20010290003).
关键词
亚关键层
采场矿压
关键层理论
inferior key strata
mining pressure around longwall face
key strata theory
