山东煤炭科技2024，Vol.42Issue(2)：103-108,6.DOI:10.3969/j.issn.1005-2801.2024.02.023
安顺煤矿煤岩电磁辐射测试技术研究
Research on Electromagnetic Radiation Testing Technology for Coal Rock in Anshun Coal Mine
摘要
Abstract
With the deepening of mining depth in Anshun Coal Mine,the danger of abnormal dynamic disasters occurring during stoping in the working face is significantly increased.To prevent disasters and accidents,based on the correlation between electromagnetic radiation intensity and coal rock damage during the loading and failure process of coal rock,an electromagnetic radiometer can be used to test the damage and failure status of coal and rock masses,predict the danger of dynamic disaster accidents in coal and rock masses.By setting the No.3 mining area track downhill and the No.4 mining area track air door at 0-300 m as control groups,the coal rock electromagnetic radiation testing on three downhill excavation roadways in the No.4 mining area:track,return air,and tape is conducted,and analyze the regularity of the monitoring data.The research results indicate that excavation operations seriously affect the stress distribution and coal rock failure state inside the roadway,the stress disturbance is more pronounced near the excavation point,the impact on roadways with deeper excavation and stable support is relatively small;The electromagnetic radiation intensity of coal rock in the danger zone of the roadway is relatively high;When there is a fault,the electromagnetic radiation signal around the fault is strong;The stress disturbance situation in excavation coal roadways is more stable than that in rock roadways,and the stress is generally smaller.关键词
煤岩体/动力灾害/电磁辐射/应力分布Key words
coal and rock mass/dynamic disaster/electromagnetic radiation/stress distribution分类
矿业与冶金引用本文复制引用
何志龙,孙谦,宋大钊..安顺煤矿煤岩电磁辐射测试技术研究[J].山东煤炭科技,2024,42(2):103-108,6.基金项目
贵州省科技支撑计划项目(黔科合支撑[2023]一般380)资助 （黔科合支撑[2023]一般380）
