高面板堆石坝坝坡稳定性分析  

Dam Slope Stability Analysis of High Concrete-faced Rock-fill Dams

作　　者：白寅虎[1] 王正中[1] 余小孔[1] 

机构地区：[1]西北农林科技大学水利水电工程研究所,陕西杨凌712100

出　　处：《中国农村水利水电》2012年第6期168-171,175,共5页China Rural Water and Hydropower

基　　金：国家"863"计划项目(2002AA62Z3191);陕西省自然科学基金资助项目(97C19)

摘　　要：200m级及其以上的高面板堆石坝的稳定分析是坝体安全的关键指标,建造高面板坝硬岩堆石料本身的强度一般会满足稳定性要求,但包括世界最高面板堆石坝水布垭在内的高面板坝的坝坡设计目前仍采用经验坡比,并未考虑坝高与坝坡对面板堆石坝稳定性的影响,而水布垭作为我国建造的世界最高面板堆石坝,其运行安全性势必值得我们关注。采用STAB稳定分析软件,结合R.阿尔贝提出的堆石体边坡稳定性尺寸效应规律,以水布垭工程为例,就坝高和坝坡对高面板坝稳定性的影响进行分析研究,得出在采用相似的坝料下坝高和坝坡与稳定系数的关系表达式,为此类高面板堆石坝坡比的选择和稳定设计提供了简洁的理论方法,并采用此关系表达式对水布垭稳定性进行验证。The stability analysis of the above 200m high is the key for its safety, the strength of the construction of high CFRDs hard rock rockfill will generally meet the stability requirements , but its section is still designed experiencely including the world＇s highest CFRDS Shuibuya , without considering the impact of dam height and slope ratio. The Shuibuya as the world＇s highest panel rockfill dam built in China, its operational safety is bound to be worthy of our attention. In this paper, Shuibuya Project is used as an exam- ple, a formula of stability factor is proposed to indicate the relationship between the dam height and its stability, and between the slope ratio and the factor, based on the roekfill slope stability size effect law proposed by R Albert and based on the STAB software with the limit equilibrium method. The results show that the formula is a convenient theoretical way in slope ratio selection and stability design. And this is used to verify the relationship between expression and stability of the Shuibuya.

关 键 词：面板堆石坝 稳定性 坝坡 坝高 STAB 

分 类 号：TV641.4[水利工程—水利水电工程]