长江科学院院报2018，Vol.35Issue(3)：144-150,7.DOI:10.11988/ckyyb.20171107
白鹤滩电站左岸强卸荷区边坡稳定试验研究
Stability of the Left Bank High Slope in Strong Unloading Area of Baihetan Hydropower Station
摘要
Abstract
A comprehensive model test method is proposed to study the stability of rock slope. The comprehensive method involves the strength reduction method based on temperature-dependent similar material and the overloading method by inclined lifting. Corresponding safety evaluation method for slope stability is also established. The left bank high slope in strong unloading area at Baihetan Hydropower Station is taken as a case study.Through two mod-el tests of a typical section and the whole slope in strong unloading area,the deformation features and failure mech-anism after reducing the strength of bottom sliding surfaces are obtained. Results reveal that the gently-inclined structural planes are dominant factors of slope stability;the failure mode is block sliding with sliding-tension fractu-ring. Moreover,results also suggest that concrete replacement plugs in the front area of bottom sliding surface is an effective measure of enhancing the shear capacity of bottom sliding surface,reducing slope deformation and preven-ting blocks from sliding. The safety factor of reinforced slope is between 1.42 and 1.58. The research results provide an important scientific basis for the slope safety evaluation and the reinforcement treatment of Baihetan Hydropower Station,and also offer reference for similar slope projects.关键词
白鹤滩水电站/岩质高边坡/综合法模型试验/稳定性分析/加固效果评价Key words
Baihetan Hydropower Station/high rock slop/comprehensive model test/stability analysis/reinforcement effect evaluation分类
建筑与水利引用本文复制引用
陈媛,张林,杨宝全,杨金旺,李思滢..白鹤滩电站左岸强卸荷区边坡稳定试验研究[J].长江科学院院报,2018,35(3):144-150,7.基金项目
国家重点研发计划资助项目(2016YFC0401908) （2016YFC0401908）
国家自然科学基金项目(51609163) （51609163）
