长江科学院院报2012，Vol.29Issue(10)：91-97,7.DOI:10.3969/j.issn.1001-5485.2012.10.018
某水电站导流洞出口边坡稳定性分析与评价
Stability Analysis and Estimation for Slope at the Diversion Tunnel Outlet of a Hydropower Project
摘要
Abstract
In-situ monitoring data of a hydropower station located in southeast China revealed constant and rapid deformation in the slope at the diversion tunnel outlet. To find out the deformation scope and characteristics, the in-situ monitoring data was analyzed in detail, and in association with the limit equilibrium analysis and 3D numerical simulation, the slope stability was evaluated. Research results indicated that the slope was stable before excavation; but without effective support, soil layer in the quaternary system would slide toward the excavation face after excavation. Deformation of the side slope would develop with time, which means that the deformation scope would extend to the upper part gradually in the absence of in-time support. Suggestions were given as follows; before designing the slope support measures, firstly, more drilling or physical inspection work are needed to detect the scope and depth of quaternary soil layer; secondly, in-situ tests are needed to check the shear strength of the easily-slide quaternary soil and strongly weathered slate layers.关键词
导流洞出口边坡/稳定性/监测/极限平衡分析/三维数值模拟Key words
diversion tunnel outlet slope/ stability/ monitoring/ limit equilibrium analysis/ 3 D numerical simulation分类
天文与地球科学引用本文复制引用
陆学华,韩军,张宜虎,成传欢..某水电站导流洞出口边坡稳定性分析与评价[J].长江科学院院报,2012,29(10):91-97,7.基金项目
973课题(2011CB710603) （2011CB710603）
水利部公益性行业科研专项经费项目(201001008) （201001008）
