摘要
针对广州增城至从化高速公路K8+160~+515段路堑开挖引起的滑坡问题,分析了滑坡发展过程及变形破坏特征,剖析了滑坡变形机理与破坏机制。通过现场调查滑坡破坏情况,地震波波速变化带、钻孔揭露岩性特征、测斜管深层位移分析及数值模拟计算等综合判定滑动面。根据滑坡区地层岩性、地质构造、地形地貌等复杂多变和不均匀性,变形破坏表现为三个破坏区,分别采用抗滑桩、预应力锚索框架加固及排水等综合处治措施。
In view of the landslide problem caused by the cutting excavation of K8+160~+515 Section of Zengcheng—Conghua Expressway in Guangzhou,the development process,deformation failure characteristics,deformation mechanism and failure mechanism of landslide are analyzed.Through field investigation of landslide failure,seismic wave velocity change zone,lithology characteristics revealed by drilling,analysis of deep displacement results of inclinometer tube and numerical simulation calculation,the sliding surface is comprehensively determined.Due to the complex lithology,geological structure,topography and geomorphology of the landslide area,the slope deformation and failure are obviously manifested in three different deformation and failure areas,according to which,the comprehensive treatment measures such as anti-slide pile,prestressed anchor cable frame reinforcement and drainage are put forward.
作者
王可君
孙发兵
陈姣姣
WANG Kejun;SUN Fabing;CHEN Jiaojiao(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430056,China)
出处
《路基工程》
2021年第1期196-203,共8页
Subgrade Engineering
关键词
高速公路
滑坡机制
稳定性分析
应急处理
治理措施
expressway
landslide mechanism
stability analysis
emergency treatment
treatment measures
