大型洞室群智能动态设计方法及其实践

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Abstract Focusing on characteristics of strong excavation unloading of high sidewalls of multi-cavern group under complicated geological conditions，an intelligent and dynamic design method is proposed for the stability analysis，design and construction of large cavern group. The method aims at the safe and economic construction for the large cavern group under complicated geological conditions. It considers the entire system?s process from recognition of geological conditions，back analysis of in-situ stress field，understanding of deformation and failure mechanism of surrounding rock of large cavern group，stability analysis，global optimization of control measures of the stability such as excavation procedure and support parameters of cavern group，and dynamic adjustment of the excavation procedure and support parameters during the construction. The method has been in good practice of design and construction of underground powerhouse at Jinping II hydropower station. The results show that it is reliable information，intelligent and scientific method for design and construction of large cavern group.

Key words： underground engineering large cavern group dynamic design method intelligent design method Jinping II hydropower station stability failure mode

Received: 25 September 2010

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http://www.rockmech.org/EN/Y2011/V30/I3/433

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