浙西南山区高填方地基边坡压实土长期稳定性研究  

Study on Long-term Stability of Compacted Soil of High Fill Foundation Slope in Southwest MountainousArea of Zhejiang Province

作　　者：耿康 杨怀钰 胡元音 王孝权 窄佐磊 GENG Kang;YANG Huaiyu;HU Yuanyin;WANG Xiaoquan;ZHAI Zuolei(Zhenan Comprehensive Engineering Surveying and Mapping Institute Co.,Ltd.,Hangzhou 310012,Zhejiang,China;Seventh Geological Brigade of Hubei Geological Bureau,Yichang 443100,Hubei,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]湖北省地质局第七地质大队,湖北宜昌443100 [3]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4期32-37,42,共7页Water Power

基　　金：浙江省地质专项资金项目(2023012)。

摘　　要：为研究浙西南山区高填方边坡压实土长期稳定性问题,结合现场取样、室内试验与数值模拟计算方法,对压实土的力学性质、变形特征和稳定性的影响因素进行研究,采用Kelvin模型对Burgers模型的改进模型,得到了压实土的蠕变参数,结合有限元模拟软件研究高填方边坡的蠕变现象。结果表明,模型参数随着荷载增大逐渐减小,蠕变模型参数与压实度呈现正相关,与含水率呈现负相关。选择填筑材料应尽量选用最优含水率的材料,同时对填筑体进行压实,压实度应在90%以上。对于高填方边坡沉降和位移的控制,需要采取优化设计、加强排水设施、控制施工工艺和实施边坡加固等综合措施。In order to study the long-term stability of compacted soil in high fill foundation slope engineering in southwest mountainous area of Zhejiang Province,the mechanical properties,deformation characteristics and stability influencing factors of compacted soil are studied by means of field sampling,laboratory test and numerical simulation.By using the Kelvin model to improve the Burgers model,the creep parameters of compacted soil are obtained,and the creep phenomenon of the high fill slope is calculated by using the finite element simulation software.The results show that,(a)the parameters of the improved Burgers model gradually decrease with the increase of load,and the parameters of the creep model are positively correlated with the degree of compaction and negatively correlated with the water content;(b)when selecting the filling material,the material with the optimal water content should be selected as far as possible,and at the same time,the filling body should be compacted with a degree of compaction more than 90%;and(c)for controlling the settlement and displacement of high fill slope,comprehensive measures need to be taken,including optimizing design,strengthening drainage facilities,controlling construction technology and implementing slope reinforcement.

关 键 词：高填方地基 边坡压实土 长期稳定性 影响因素 室内试验 数值模拟 工程措施 浙西南山区 

分 类 号：TU413.62[建筑科学—岩土工程]