隧道洞口崩坡积碎石土层地基处理方案分析研究  

Comparative study on foundation treatment schemes about colluvial gravel soil layer of avalanche slope in tunnel portal

作　　者：李元元[1] 

机构地区：[1]四川大唐国际甘孜水电开发有限公司,四川康定626001

出　　处：《东北水利水电》2014年第6期1-3,14,共4页Water Resources & Hydropower of Northeast China

摘　　要：根据长河坝隧道出口地形、地质条件和存在的隐患,主要需解决的问题是隧道出口堆积体段地基沉降、不均匀沉降、偏压变形、库水侵蚀软化地基的问题。文中参考地基处理类似的工程案例,提出加筋帷幕墙补强处治方案和钢管桩顶撑处治方案2种方案,并进行了比较研究。According to the terrain, geological conditions and the existing hidden defects in the tunnel portal of the Changhe dam, the some main problems should be solved, include the foundation settlement, the nonuniform settlement, the bias deformation and the foundation softening under the reservoir water erosion of accumulation body in tunnel portal. Based on the ground treatment of the similar projects, the paper puts forward and compares the two treatment methods of the reinforced curtain wall reinforcement and the steel pipe top bracing.

关 键 词：堆积土层 地基沉降 加筋帷幕墙 隧道洞口 

分 类 号：TV672.1[水利工程—水利水电工程]