乌江银盘水电站大坝深层抗滑稳定分析研究  

Research for anti-slide and stability of deep foundation of Yinpan hydropower station dam on the Wujiang river

作　　者：刘玉[1] 周浪 胡进华[1] 冉红玉[1] 

机构地区：[1]长江水利委员会设计院,湖北武汉430010 [2]重庆大唐国际武隆水电开发有限公司,重庆409600

出　　处：《人民长江》2008年第4期34-36,共3页Yangtze River

摘　　要：银盘水电站大坝建基岩体主要由软岩和硬岩互层组成,岩层倾向右岸偏下游,岩体中发育多条不利剪切带,大坝存在深层抗滑稳定问题。以典型坝段为代表,对各种计算模式进行计算分析,选取最不利计算模式进行深层抗滑稳定计算。应用刚体极限平衡法中的等安全系数法计算,对侧向切割面岩体的阻滑作用、不同裂隙连通率组合、滑动体与抗力体间作用力角度不同取值进行了计算分析。研究结果表明,银盘水电站大坝深层抗滑稳定满足要求。The dam foundation rock mass of Yinpan hydropower station is the interbedded strata of soft rock and hard rock,the rock strata dips in right direction and downstream,in rock mass,multiple unfavourable shearing belts developed,and the deep anti-slide and stability problem of the dam foundation exist.Taking typical monolith as example and selecting the most unfavourable condition,the analysis and computation for deep foundation anti-slide and stability were conducted by various computation modes.Applying safety factor approach in rigid-body limit equilibrium method,the anti-slide function of rock mass in lateral dissected cross-section,intercommunication ratio among fissures,the angle of acting forces between slide mass and anti-slide mass were computed.The research result demonstrates that the deep foundation anti-slide stability of Yinpan hydropower station meets requirement.

关 键 词：深层抗滑稳定 刚体极限平衡法 安全系数 银盘水电站 

分 类 号：TU457[建筑科学—岩土工程]