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卡尔沟料场是四川瀑布沟水电站填堆石坝的两大石料场之一。卡尔沟料场边坡岩体较破碎,呈次块状-镶嵌碎裂结构,结构面组合形成大量潜在不稳定块体,尤其是马道以下部位产生大量失稳块体,严重威胁施工安全。本文在阐明研究区工程地质环境条件的基础上,研究了卡尔沟侧900~960m边坡的坡体结构特征;进而讨论边坡已有变形破坏迹象,总结出边坡的变形破坏模式,进行变形破坏机制分析,采用块体理论的分析方法对代表性块体进行了合理的稳定性评价,提出工程建议。
Karl ditch materials market is Sichuan Pubugou Hydropower Station fill rock dam one of the two large stone. The rock mass of Kil’eo material slope is fragmented and sub-massive-inlaid fragmentation structure, and a large number of potential unstable blocks are formed by combination of structural planes. In particular, a large number of unstable blocks occur in the areas below the horse track, which seriously threatens the construction safety. Based on the clarification of the engineering geological and environmental conditions in the study area, the slope structural features of the 900-960m slope on the Kaldean side are studied. Then the deformation and failure signs of the slope are discussed, and the deformation and failure modes of the slope are summarized. Destruction mechanism analysis, the use of block theory analysis of the representative blocks of a reasonable stability evaluation, put forward engineering proposals.