Electromagnetic Radiation Response Laws of Periodic Roof Pressure on Working Face

摘要：

Our experiments have showed that electromagnetic radiation (EMR) is a physical phenomenon produced in the deformation and fracture of coal or rock and it has a close relation to the degree oftbe deformation and fracture of coal or rock under load. There are EMR signals produced and collected in the roofs with periodic fracture on the working face. The greater the roof pressure, the more active the roof movement, and the stronger the EMR signals. EMR testing results in Huafeng coalmine showed that the obvious EMR abnormity appeared before the periodic roof pressure appearance, and EMR signals responded well to the periodic roof pressure in the process of edvancing of working face. So the EMR technology can be used to monitor the roof movement and forecast the periodic roof pressure on the working face.

关键词： the fracture of coal or rock electromagnetic radiation abundant pressure periodic roof pressure

作者: WANG Enyuan LIU Xiaofei LING Li

作者单位: School of Safety Engineering,China University of Mining and Technology,Xuzhou 221008,Jiangsu,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 2473-2477

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）