Influence of High In situ Stress on Stability of Dam Foundation Rock
Influence of High In situ Stress on Stability of Dam Foundation Rock
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发表时间：
1999
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通讯作者：
Yuanzhe Zhi
中科院分区：
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作者：
Yuanzhe Zhi
在大坝施工中，较少考虑地应力与坝基岩体稳定性的关系。对于二滩坝区出现的高地应力，初始地应力场、开挖过程中的时间和空间效应以及外部荷载(拱顶推力等)共同作用。对坝基稳定性进行了分析计算。分析结果表明，高地应力不利于基坑开挖，但有利于坝基岩体的抗滑稳定。
The relationship between in situ stress and stability of dam foundation rock is less considered in dam construction . For high in situ stress occurred in Ertan dam area , combined action of initial in situ stress field , time and space effect during excavation and external loads (arch thrust etc.) on dam foundation stability are analyzed and calculated . The analysis results show that high in situ stress is adverse to foundation pit excavation ,but is favorable to dam foundation rock stability against sliding .