浙西南山区填方边坡加固措施及稳定性分析  

Reinforcement Measures and Stability Analysis of Filling Slope in the Mountain Area of Southwest Zhejiang

作　　者：赵红立 杨贤玲 李昆仑 窄佐磊 ZHAO Hongli;YANG Xianling;LI Kunlun;ZHAI Zuolei(Zhenan Comprehensive Engineering Surveying and Mapping Institute Co.,Ltd.,Hangzhou 310012,Zhejiang,China;School of Urban Geology and Engineering,Hebei GEO University,Shijiazhuang 050031,Hebei,China)

机构地区：[1]浙江省浙南综合工程勘察测绘院有限公司,浙江杭州310012 [2]河北地质大学城市地质与工程学院,河北石家庄050031

出　　处：《水力发电》2024年第6期37-43,共7页Water Power

基　　金：浙江省地质专项资金项目(2023012)。

摘　　要：以浙西南山区填方边坡区为研究对象,结合室内试验分析水泥土的力学性质;采用有限差分软件的强度折减法和极限平衡法,研究搅拌桩结构参数变化对加固边坡的影响规律,分析搅拌桩加固后边坡的稳定性。结果表明,水泥可提高土体的强度,但效果有限;增加围压,水泥土由脆性破坏逐渐转为塑性破坏;改变桩水平分布数量,对提高边坡稳定性效果不显著;改变桩加固位置对边坡稳定性的影响较大,选取合适的加固位置是加固边坡的关键。Taking the filling slope area in the mountainous area of southwest Zhejiang Province as research object,the mechanical properties of cement soil are studied through indoor experiments,and the influences of the changes of structural parameters of mixing piles on slope reinforcement and the stability of slope after reinforced by mixing piles are analyzed by strength reduction method and limit equilibrium method in finite difference software.The results indicate that,(a)the cement can improve the strength of soil,but the effect is limited;(b)increasing confining pressure gradually transforms the brittle failure of cement soil into plastic failure;(c)changing the horizontal distribution of piles has no significant effect on improving slope stability;(d)changing the position of pile reinforcement has a significant impact on the stability of slope,and selecting an appropriate reinforcement position is the key to strengthen the slope.

关 键 词：填方边坡 稳定性分析 搅拌桩加固 水泥土 强度特性 浙西南山区 

分 类 号：TU457[建筑科学—岩土工程]