摘要
根据甘肃砚北煤矿矿井动力现象的特征,通过现场实测与资料统计,实验室煤岩力学性质试验及理论分析,得出了砚北煤矿矿井地应力分布的基本规律,并进一步证实砚北煤矿矿井动力现象属冲击地压,其冲击的强弱程度属中等偏弱且具有明显的脆性特征,地应力的大小和方向是影响其动力现象的最根本因素.
On the basis of in-situ measurements and data statistics analysis of the dynamic underground phenomena in Yanbei coal mine, located in Gansu Province, and lots of laboratory tests on coal and rock specimens and theoretical analysis of testing results, the author correspondingly concluded the basic distribution laws of ground stress in Yanbei coal mine. Furthermore, it can be proved that the dynamic underground phenomena in Yanbei mine is rock burst in reality, and the impact strength is in middle class, it needs to be pointed out that the orientation and magnitude of the ground stress is a critical factor influencing the dynamic phenomena inYanbei coal mine.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第4期388-391,共4页
Journal of China Coal Society
关键词
大倾角
放顶煤
地应力
动力现象
steep dip angle
sub-level caving
ground stress
dynamic phenomena
