摘要
小湾水电站施工期间,笔者基于现场调查,分析、复核了进水口边坡内控制性结构面的产状和性状,确定了7个可动块体;基于块体理论,计算了各块体的稳定性及所需要的锚固力,认为,f89-1南侧块体为控制边坡稳定的主要块体,由此确定边坡下限锚固力为351029kN;综合二维极限平衡分析成果,确定小湾进水口正面边坡所需总锚固力为516121.5kN,其较前期预估总锚固力有明显减小。
During the construction of Xiaowan hydropower, based on field investigation, project researchers analysed and checked orientation and property of every controlling structural planes in the water - intake slope, and determined seven movable blocks. Based on the block theory, this paper calculated stability coefficient and anchoring force of every movable block. The result shows that the main block controlling the stability of the water - intake slope is located on south side of the f89-1 fault. Its lower limit anchoring force is 351029 kN. Based on this anchoring force and the result of 2D limiting equilibrium analysis, the total anchoring force of the water - intake slope is determined as 516121.5 kN. It is evidently less than the former result.
出处
《工程地质学报》
CSCD
北大核心
2009年第1期70-75,共6页
Journal of Engineering Geology
关键词
小湾水电站
进水口边坡
控制性结构面
块体理论
锚固力
Xiaowan hydropower, Water - intake slope, Controlling structural plane, Block theory, Anchoring force
