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一、工程概况 浙江省上三高速公路第十五合同段K91+700～K92+850路段,路线位于剥蚀丘陵地带,山体自然坡度为20。～30。,路线右侧山峰高程约为400m,相对高差约为200m,地形特点是谷深、坡陡、顶平。滑坡(五)为填方路堤形式,地基为由粘性土夹碎块石组成的崩坡堆积体,沿坡面呈上薄下厚分布。堆积体结构松散,裂隙发育,透水性好,稳定性差,对路基加载较为敏感。经中交规划设计院勘
First, the project profile Shangrao Expressway in Zhejiang Province fifteenth contract section K91 +700 ~ K92 +850 section, the route is located in the erosion hills, the natural slope of 20. ~ 30. The elevation of the right side of the route is about 400m and the relative height difference is about 200m. The terrain features valley depth, steep slope and top level. Landslide (e) is filled embankment form. The foundation is a slope-disintegrating body composed of clayey earth-clinker fragments, and is distributed along the slope with a thin upper layer and a lower layer. Loose body structure, crack development, good water permeability, poor stability, more sensitive to subgrade loading. The China Communications Planning and Design Institute survey