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xi er he san ji dian zhan yin shui sui dong ta fang te xing chu bu tan tao
Author(s): 
Pages: 25-27
Year: Issue:  1
Journal: Hydrogeology and Engineering Geology

Keyword:  西洱河工程地质条件引水隧洞成因分析隧洞塌方支洞地质特性地下水开挖断面洞线;
Abstract: <正> 西洱河三级电站引水隧洞和支洞共长4.4公里,开挖断面为马蹄形及城门形,直径4.7米和5.7米。由于洞线穿越了大断层阻隔的落水构造,所以围岩破碎多水,泥化膨胀,工程地质条件差。加上某些环节考虑欠周,故塌方频度高,规模大,处理难。既耗费了大量资金,又影响了工期。为了总结经验,减少事故,本文从地质特性和施工实践出发,通过塌方成因分析,提出塌方分类设想以及防治要点,供读者参考。
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