采矿与安全工程学报Issue(1)：20-27,8.DOI:10.13545/j.cnki.jmse.2015.01.004
孤岛面开采强矿震异常区的被动声波探测技术及应用
Seismic hazard assessment in complex island coalface by computed tomography
摘要
Abstract
According to the high mining stress and seismic hazard risk in excavation operation of 10305 Island Coalface in Baodian coal mine, the relation between P-wave velocity and stress was ana-lyzed, and the seismic hazard assessment method by using passive computed tomography in 10305 Is-land Coalface was established. Meanwhile, the indexes of P-wave velocity anomaly and velocity gradi-ent anomaly were proposed to evaluate the stress concentration or seismic hazard zones, and the dis-crimination standards were also constructed. Finally, the assessment method was applied in 10305 Is- <br> land Coalface. The results show that P-wave velocity and stress presents characteristics of positive cor-relation. The high velocity anomalies and velocity gradient anomalies are always located in the regions adjacent to the narrow goafing side of 10305 Island Coalface, which are basically similar to the anomaly areas of seismic hazards. The tomography detection practices show that it is feasible for seismic hazard assessment and anomaly region division during island coalface mining, and the hazard assessment ac-curacy is high. Thus, the passive computed tomography can improve the monitoring and pre-warning level for seismic hazards in underground mining.关键词
孤岛工作面/矿震异常/波速/声波探测/波速梯度Key words
island coalface/seismic hazard/wave velocity/tomography detection/velocity gradient分类
矿业与冶金引用本文复制引用
曹安业,井广成,窦林名,巩思园,赵永亮,张贞良..孤岛面开采强矿震异常区的被动声波探测技术及应用[J].采矿与安全工程学报,2015,(1):20-27,8.基金项目
国家自然科学基金青年科学基金项目(51204165)；江苏高校优势学科建设工程项目(SZBF2011-6-B35)；中央高校基本科研业务专项资金项目(2012BZB17，2010QNA30)；国家“十二五”科技支撑计划项目(2012BAK04B06)；国家重点基础研究发展计划(973)项目(2010CB226805) （51204165）
