摘要
摘要雅砻江锦屏水电站地下工程埋深大,工程区地质构造复杂,洞线中遇到与天生桥二级水电站引水隧洞中性质相近的岩石,具有发生岩爆的应力条件与岩性条件。事实上1991年,在5km长的勘探平洞施工中,已有轻度岩爆发生。岩爆将是本工程中的一个关键问题,但到目前为止,岩爆又是一个研究得很不充分的课题。本文在对岩爆研究现状叙述的基础上,提出了锦屏工程岩爆治理工作的建议:1.早期对岩爆作宏观判断;2.优化设计;3.施工中用声发射和微震监测;等等。
The deep underground works of Jinping Hydropower station on Yalong River, thecomplex geologic structure of engineering area, the nature of rock of the tunnel line close tothat in the diversion tunnel of Tianshengqiao(II)Hydropower station lead to the stress andlithologic condition for rock burst. Rock burst is the critical problem in this engineering, butso far it is a problem which is not been fully studied. This paper put forward suggestions forrock burst treatment of Jinping project on the basis of current study situation for rock burst:1. microjudgement for rock burst in the early period; 2. optimal design; 3. sound emitting andmicro-seismic monitoring in the construction. etal.
出处
《水电站设计》
1993年第1期55-59,54,共6页
Design of Hydroelectric Power Station
关键词
地下工程
预测
防治
岩爆
underground engineering
rock burst
prediction
prevention and control
