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1 坍塌情况新安江水电站在建造施工过程中,因开挖上坝公路、缆机平台和其它建筑物地基平台,使两岸形成了多级人工开挖的边坡。左岸坝头形成了115、142、175三级平台,宽度一般为5～10m,最宽可达20m。其中115平台边坡坡角约40°左右。其它两级平台内侧边坡均较陡,坡角一般大于70°。坡向近SN倾向W。大坝左岸下游两条冲沟之间及上游牛角坞两冲沟之间,由于在施工过程中原始边坡被破坏,曾经发生过塌方(即老塌方区)和严重的边
1 Collapses During the construction and construction of the Xin’anjiang Hydropower Station, the multi-stage artificially excavated slopes formed on both banks due to the excavation of the dam roads, cable car platforms and other building foundation platforms. The left bank of the dam formed a 115,142,175 three platform, the width is generally 5 ~ 10m, the maximum up to 20m. 115 of which slope angle of about 40 ° slope. The other two platforms are steep slope inside, slope angle is generally greater than 70 °. Slope to near SN tendency Between the two ditches downstream of the left bank of the dam and between the two ditches of the upstream corner dock, due to the destruction of the original slope during construction, landslides (ie, old landslides) and serious edges