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路堑由哪几部分组成
更新时间: 2020-11-01 00:00:00  

路堑由路堑基床底层、路堑基床表层、路堑排水系统、路堑侧沟、路堑堑顶天沟、吊沟等、路堑边坡组成;并且路堑的开挖方法有全断面开挖和横向台阶开挖。

路堑是低于原地面的挖方路基,指从原地面向下开挖而成的路基形式;并且它能起到缓和道路纵坡或越岭线穿越岭口控制标高的作用;并且路堑通过的地层,在长期的生成和演变过程中,一般具有复杂的地质结构。

关键词: 部分 组成

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