摘要
内蒙古地区冬季积雪厚,春季气温回升快,大量雪水浸入边坡及挡土墙墙背的细砂层中,由于上部护坡和下部挡墙的排水孔多数堵塞,地下水无法排出。融化雪水沿土坡表面产生渗流,导致边坡变形失稳。地下水位上升时,挡土墙墙后严重积水,按水土分算原则计算作用在挡墙上的水土压力增大,挡墙极易滑移。
Inner Mongolia in winter snow is thick, the spring temperatures rise quickly, a lot of snow water in slope and retaining wall back in fine sand layer. Due to the drainage hole at the upper part of the lower slope and retaining wall most jam, water can not be discharged. Melting snow along the slope surface flow, resulting in instability of slope deformation. The rise of ground water level, serious water retaining wall, according to the principle of soil into account in calculating soil pressure on retaining wall, retaining wall is easy to slip.
出处
《岩土工程技术》
2014年第5期257-260,共4页
Geotechnical Engineering Technique
关键词
护坡
重力势挡土墙
渗流
稳定性系数
slope protection
gravity retaining wall interstifial flow
coefficient of stability
