岩土力学2013，Vol.34Issue(2)：491-497,7.
深埋隧洞微震活动区与岩爆的相关性研究
Study of relativity between rockburst and microseismic activity zone in deep tunnel
摘要
Abstract
Based on a large amount of microseismic monitoring data and hundreds of rockbursts with different intensities occurring in the deep diversion and drainage tunnels of Jinping II hydropower station, relativity between rockburst and microseismic activity zone is studied. The conclusions are drawn as follows. (1) Microseismic activity mainly ranges from 3 times the tunnel diameter behind working face to 1.5 times ahead; and rockburst high-risk zone lies in the region as large as 3 times the tunnel diameter behind working face. Therefore rockburst high-risk zone is greatly in accordance with the main microseismic activity zone. (2) Potential rockburst high-risk zones in tunnel project are highly localized in the region already excavated as large as 3 times the tunnel diameter behind working face and the region under construction as large as 1.5 times the tunnel diameter ahead of working face. (3) Seismic events and rockburst distribution are characterized by regional aggregation. Some of them happen in the aggregation region of seismic events. Others happen on the edge of aggregation region of seismic events. That is an inherent phenomenon in the failure progress of rock mass and closely related to local stress concentration on the edge of aggregation region of seismic events.关键词
岩石力学/深埋隧洞/微震/岩爆/相关性Key words
rock mechanics/ deep tunnel/ microseismic/ rockburst/ relativity分类
建筑与水利引用本文复制引用
赵周能,冯夏庭,陈炳瑞,丰光亮,陈天宇..深埋隧洞微震活动区与岩爆的相关性研究[J].岩土力学,2013,34(2):491-497,7.基金项目
国家重点基础研究发展规划(973)项目(No.2010CB732006). （973）
