锦屏水电枢纽辅助洞工程岩爆现象分析及防治措施

Analysis and prevention measures for rock-burst in the auxiliary tunnel of the Jinping Hydropower State

通过对深埋长达隧道岩爆发生机理的分析,归纳了几种判定岩爆发生的方法.结合锦屏水电枢纽辅助洞工程岩爆现象的分析,根据现场预防、治理岩爆的实际经验,给出了锦屏水电枢纽辅助洞工程岩爆发生的原因和目前所采取的工程措施,为如何防止岩爆对工程带来的危害提供有效的实战经验,并为类似工程提供具有借鉴意义的施工经验和防治措施.

The conditions of rock-burst were analyzed, such as high land stress, geologic conditions, rock structure, etc. The methods to judge rock-burst were summarized by analyzing the mechanism of long and deep-buried tunnel rock-bust. To prevent the harm resulting from rock-bust, and the prevention measures for rock-burst were presented from the practical experience during the rock-burst study in the auxiliary tunnel of the Jinping Hydropower State. The results can supply construction experience and prevention measures for similar engineering.