| 深井厚煤层冲击地压综合预警技术研究 |
| |
| 引用本文： | 杨宁宁,刘贞堂,李学龙,宋大钊.深井厚煤层冲击地压综合预警技术研究[J].煤炭技术,2014(8):252-255. |
| |
| 作者姓名： | 杨宁宁 刘贞堂 李学龙 宋大钊 |
| |
| 作者单位： | 煤矿瓦斯与火灾防治教育部重点实验室;中国矿业大学安全工程学院 |
| |
| 基金项目： | 国家自然科学基金项目(51304205);江苏高校优势学科建设工程资助项目 |
| |
| 摘 要： | 针对大采深厚煤层条件下冲击地压的监测预报难题,以千秋煤矿为例,提出了基于电磁辐射和微震的冲击地压综合监测预警方案,并对冲击事件前微震反常的原因进行了初步探讨。发现冲击地压发生前电磁强度基本呈逐渐上升趋势;微震频次和日总能量在冲击发生前逐渐减小,在冲击发生时频次和日总能量达到峰值;认为冲击事件前微震反常现象是煤岩体应力转移和塑性变形所致。综合利用电磁辐射和微震的这种特征规律可显著提高大采深厚煤层矿井的冲击地压预警准确率。
|
| 关 键 词： | 冲击地压 监测预报 电磁辐射 微震 综合预警 |
Study on Comprehensive Precaution of Rock Burst in Deep Mine with Thick Coal Seam |
| |
| YANG Ning-ning;LIU Zhen-tang;LI Xue-long;SONG Da-zhao.Study on Comprehensive Precaution of Rock Burst in Deep Mine with Thick Coal Seam[J].Coal Technology,2014(8):252-255. |
| |
| Authors: | YANG Ning-ning;LIU Zhen-tang;LI Xue-long;SONG Da-zhao |
| |
| Affiliation: | YANG Ning-ning;LIU Zhen-tang;LI Xue-long;SONG Da-zhao;Key Laboratory of Gas and Fire Control for Cool Mine;Faculty of Safety Engineering,China University of Mining and Technology; |
| |
| Abstract: | Against with the puzzle of monitoring and forecasting of rock burst with large mining depth and thick seam.Takes Qianqiu Coal Mine as an example,we put forward the monitoring and forecasting rock burst program based on electromagnetic radiation(EMR) and microseism,and study the reason of abnormal microseism before rock burst preliminarily.We find EMR intensity Sustains growth before rock burst;microseism frequency and total daily decreases before rock burst,reach the top while rock burst occurs;the coal and rock transfer and plastic deformation lead to the abnormal microseism.Comprehensive utilization the feature of EMR and microseism could improve the Accuracy of rock burst forecasting significantly in deep mine with Thick Coal Seam |
| |
| Keywords: | rock burst monitor and forecast EMR microseism comprehensive precaution |
| 本文献已被 CNKI 等数据库收录！ |
