摘要
湿陷性黄土地区挖填方场地形成过程中会遇到众多岩土工程问题,未有效识别和防治会发生工程事故。为避免相关工程事故的发生,保证工程建设的安全,基于工程实践剖析了黄土挖填方场地形成的关键岩土工程问题及处治措施。边坡与基坑的安全、地表水与地下水的防治、地基变形是主要岩土工程问题,填筑体的湿化变形是重点难点,加强防排水是避免工程问题发生的主要措施。临坡顶建筑物应考虑嵌固,临坡底建筑物应考虑基础(地下室)受到的不均匀土压力;挖填接触面两侧、泉水出露点周围易形成饱和土体,强风化岩层、单斜层状构造的强透水岩层为地下水的主要渗流通道。边坡治理、防排水、地基处理、基坑工程、建筑物嵌固等应系统考虑。
There are many geotechnical engineering problems in the formation of excavation and filling sites in collapsible loess area,and engineering accidents will occur if the problems are not effectively identified and prevented.In order to avoid the occurrence of related engineering accidents and ensure the safety of engineering construction,the key geotechnical engineering problems and treatment measures based on engineering practice were analyzed.The safety of slope and excavation,the prevention and control of surface water and groundwater,and foundation deformation are the main geotechnical engineering problems.The wetting deformation of filling body is the key and difficult point.Waterproof and drainage are the main measure to avoid engineering problems.The buildings near the top of the slope should be embedded,and the uneven earth pressure on the foundation(basement)should be considered for the buildings near the bottom of the slope.It is easy to form saturated soil on both sides of the excavation and filling interface and around the spring point.The main seepage channels of groundwater are in strongly weathered rock and strongly permeable rock with monoclinic structure.Slope treatment,waterproof and drainage,foundation treatment,excavation engineering,building embedment should be considered systematically.
作者
蔡怀恩
张继文
李鹏军
刘帅
梁小龙
Cai Huaien;Zhang Jiwen;Li Pengjun;Liu Shuai;Liang Xiaolong(China Jikan Research Institute of Engineering Investigations and Design,Co.,Ltd.,Xi’an 710043,Shaanxi,China)
出处
《岩土工程技术》
2022年第1期22-25,共4页
Geotechnical Engineering Technique
基金
陕西省重点研发计划项目(2020ZDLSF06-03)
国家重点研发计划项目(2017YFD0800501)。
关键词
湿陷性黄土
挖方
填方
地基
变形
边坡
地下水
collapsible loess
excavation
fill
foundation
deformation
slope
groundwater
