(1. HydroChina Chengdu Engineering Corporation，Chengdu，Sichuan 610072，China；2. Large-scale Underground Engineering Affiliation of National Hydropower Technology Research and Development Center，HydroChina Chengdu Engineering Corporation，Chengdu，Sichuan 610072，China；3. College of Water Resource and Hydropower，Sichuan University， Chengdu，Sichuan 610065，China)
Abstract：Stress controlled failure mode is common in underground powerhouse caverns under high geostress. The relaxation zone in surrounding rock is the product of stress controlled failure mode. As one of the main external factors for rock deformation and relaxation zone，the initial geostress is the foundation of surrounding rock stability analysis. In this paper，several initial geostress field inversion methods are discussed. And a geostress field generation method is also proposed. By contrast the inversion results of this proposed method with the classical one，the proposed method is proved effective. A simulation method for relaxation zone is introduced in this paper which taking the displacement data and acoustic data both into consideration.
程丽娟1，2，张建海3，侯 攀1，彭薇薇1. 高地应力脆性岩体中洞室群监测反馈分析的2个关键技术问题探讨[J]. 岩石力学与工程学报, 2015, 34(S2): 4187-4196.
CHENG Lijuan1，2，ZHANG Jianhai3，HOU Pan1，PENG Weiwei1. STUDY OF TWO KEY TECHNICAL ISSUES OF FEEDBACK ANALYSIS FOR CAVERNS IN BRITTLE ROCK UNDER HIGH GEOSTRESS. , 2015, 34(S2): 4187-4196.
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2015, Vol. 34 
