摘要
姚桥矿组合煤岩样压缩破坏的电磁辐射实验表明,煤岩样电磁辐射信号随载荷增加而增强,电磁辐射信号与冲击能指数成线性正比关系,电磁辐射信号与顶板比例成正指数关系。实验确定的煤岩样主破裂时电磁辐射临界值已应用于7251工作面冲击矿压预测。
Experiments on group coal samples taken from Yaoqiao Coal Mine indicate that electro-magnetic radiation signals of coal samples intensifies with the increase of load.The electro-magnetic radiation signals and bump index present a linear proportional relation.The scale between the electro-magnetic radiation signals and roof are in positive exponent relation.The critical values of the electro-magnetic radiation signals obtained when the coal sample breaks determined by the experiments have been applied in the prediction of the bump pressure in the 7251 face of the mine.
出处
《中国煤炭》
北大核心
2009年第1期39-41,共3页
China Coal
关键词
组合煤岩
电磁辐射
单轴压缩
预测
group coal sample,electro-magnetic radiation,single axle compaction,prediction
