基于钻孔电磁辐射法的煤体应力分布测试  

Study on tests of stress distribution on coal mass with drilling electromagnetic radiation method

作　　者：苑广华[1,2] 王恩元[1,3,2] 沈荣喜[1,2] 潘东伟[1,2] 许金杯[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏省徐州市221116 [2]煤矿瓦斯与火灾防治教育部重点实验室,江苏省徐州市221116 [3]煤炭资源与安全开采国家重点实验室,江苏省徐州市221116

出　　处：《中国煤炭》2013年第4期32-35,共4页China Coal

基　　金：国家自然基金项目资助(51104156);中央高校基本科研业务费专项资金资助(2010QNB01)

摘　　要：采掘工作面前方煤体应力分布和冲击地压的发生有密切关系,而煤岩受载产生电磁辐射与受载应力之间呈现对应关系,通过在两巷内帮煤体施工钻孔并测试钻孔电磁辐射,可以间接得到工作面前方煤体内应力分布规律。以峻德矿三水平北17#煤层三、四区一段煤层具有较强的冲击危险性为例,采用钻孔电磁辐射法分析煤体应力分布特征,为冲击地压的预防提供依据。Aimed at the close relationship between rock burst and stress distribution on coal mass in front of driving face, together with the corresponding relationship between electromag- netic radiation caused by coal and rock under loading and loading stress, the innerstress distribu- tion law of front coal mass was obtained indirectly by testing the electromagnetic radiation in boreboles via drilling on the inner coal mass of two roadways. In view of the high burst risk in a section of coal seam located on the third or fourth zone in three level north No. 17 coal seam of Junde Coal Mine, the characteristics of stress distribution on coal mass were analyzed by using borehole electromagnetic radiation, providing the basis of the prevention of rock burst.

关 键 词：电磁辐射 应力分布 冲击地压 峻德矿 

分 类 号：TD315[矿业工程—矿井建设]