东南沿海丘陵区一类弱稳定类土质边坡变形病害治理研究  

Research on the Treatment of Deformation Diseases of a Weakly Stable Soil-similar Slope in the Hilly Area of the Southeast Coast

作　　者：王坛华 Wang Tanhua(Fujian Communications Planning and Design Institute Co.,Ltd.,Fuzhou 350004,China)

机构地区：[1]福建省交通规划设计院有限公司,福州市350004

出　　处：《北方交通》2023年第6期30-34,共5页Northern Communications

基　　金：福建省交通运输科技发展项目(201313)。

摘　　要：类土质边坡是东南沿海丘陵区公路工程中最常见的挖方边坡类型,受土体残余结构面和风化层发育特征控制,以残坡积土和土状风化层为主要地层,坡面形态呈下缓上陡,是一类弱稳定类土质边坡,在工程实践中容易诱发滑坡。以福银高速某连接线YK8+590~YK8+684变形边坡应急处置和治理设计为例,从地貌形态学的角度研究弱稳定类土质边坡的成因机制、稳定性特征,采取了应急处置和永久治理方案相结合的治理措施。针对弱稳定类土质边坡应重视其勘察设计工作,不可按常规挖方边坡考虑,而应提高其防护等级。Soil-similar slope is the most common type of site slope of excavation in highway engineering in the hilly area of the southeast coast.It is controlled by the residual structural plane and weathering layer development characteristics of the soil mass,with residual slope soil and soil-like weathering layer as the main strata.The slope shape is gentle at the bottom and steep at the top,making it a weakly stable soil slope that is prone to induce landslides in the engineering practice.Taking the emergency response and treatment design of a deformed slope on a connecting line YK8+590~YK8+684 of the Fuyin expressway as an example,the formation mechanism and stability characteristics of the weakly stable soil slope are studied from the perspective of geomorphology,and the treatment measures combining the emergency response and permanent treatment schemes are adopted.For the weakly stable soil-similar slopes,attention should be paid to their survey and design work,and conventional site slopes of excavation should not be considered,but their protection level should be improved.

关 键 词：丘陵地区 类土质边坡 病害治理 预应力锚索 水文地质 位移监测 

分 类 号：U416.14[交通运输工程—道路与铁道工程]