岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2013年
1期
8-14
,共7页
水利工程%溪洛渡水电站%地下厂房洞室群%岩体工程%监测
水利工程%溪洛渡水電站%地下廠房洞室群%巖體工程%鑑測
수리공정%계락도수전참%지하엄방동실군%암체공정%감측
hydraulic engineering%Xiluodu hydropower station%underground powerhouse cavern groups%rock mass engineering%monitoring
金沙江溪洛渡水电站地下厂房洞室群规模巨大,结构复杂,玄武岩组内层间与层内错动带致使岩体非连续性是主要地质问题.采用损伤弹塑性数值方法对围岩稳定性进行分析,确定洞室开挖顺序和支护参数.精细化施工组织,严格控制开挖对岩体的损伤范围,并保证洞室轮廓的良好成型.及时对监测数据进行分析和反演分析,对支护工作量进行动态设计.开挖过程中,位移和应力变化规律较好;开挖完成后,位移和应力总量值较小,洞室围岩稳定性良好.溪洛渡地下厂房洞室群规模为我国已建和在建工程之首,总结其设计、开挖与支护,监测与反演等岩体工程控制措施,对类似工程具有指导和借鉴作用.
金沙江溪洛渡水電站地下廠房洞室群規模巨大,結構複雜,玄武巖組內層間與層內錯動帶緻使巖體非連續性是主要地質問題.採用損傷彈塑性數值方法對圍巖穩定性進行分析,確定洞室開挖順序和支護參數.精細化施工組織,嚴格控製開挖對巖體的損傷範圍,併保證洞室輪廓的良好成型.及時對鑑測數據進行分析和反縯分析,對支護工作量進行動態設計.開挖過程中,位移和應力變化規律較好;開挖完成後,位移和應力總量值較小,洞室圍巖穩定性良好.溪洛渡地下廠房洞室群規模為我國已建和在建工程之首,總結其設計、開挖與支護,鑑測與反縯等巖體工程控製措施,對類似工程具有指導和藉鑒作用.
금사강계락도수전참지하엄방동실군규모거대,결구복잡,현무암조내층간여층내착동대치사암체비련속성시주요지질문제.채용손상탄소성수치방법대위암은정성진행분석,학정동실개알순서화지호삼수.정세화시공조직,엄격공제개알대암체적손상범위,병보증동실륜곽적량호성형.급시대감측수거진행분석화반연분석,대지호공작량진행동태설계.개알과정중,위이화응력변화규률교호;개알완성후,위이화응력총량치교소,동실위암은정성량호.계락도지하엄방동실군규모위아국이건화재건공정지수,총결기설계、개알여지호,감측여반연등암체공정공제조시,대유사공정구유지도화차감작용.
The underground powerhouse cavern groups at Xiluodu hydropower station in Jinsha river has huge scale and complex structure. The discontinuity of rock mass induced by the disturbed belts between bedding and inner bedding is the main geologic problem. The elastoplastic damage theory is used to analyze the stability of surrounding rock;and the excavation sequence and supporting parameters for underground caverns are determined. Based on meticulous construction organization,the extent of damage to surrounding rock is strictly controlled to ensure good forming of caverns outline. Real-time analysis and inversion analysis of monitoring data are conducted;and the dynamic design for supporting workload is needed. In the process of excavation,the displacement and stress have a good change regularity. After excavation,the measured values of displacement and stress is relatively small;and the surrounding rock of underground powerhouse caverns has a good stability. The scale of underground powerhouse caverns at Xiluodu hydropower station tops the list in China. The summary from control measures for rock mass engineering such as design,excavation and support,monitoring data analysis and inversion analysis, can provide some references for the similar projects.