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麻栗坝水库城子渡槽沿线大部分地段为淤泥质软土层,承载力低,压缩变形大,基础持力层埋藏较深,地下水位高,基坑开挖排水容易产生明显的渗流破坏,导致地基承载力不能满足设计要求。为解决基础承载力问题,该工程采用钢筋混凝土灌注桩对基础进行加固处理。本文主要介绍了麻栗坝水库城子渡槽工程基础地质条件、跨河拱重力墩及排架承台基础处理措施和效果,可为类似地质条件的工程提供参考。
Most of the sections along the Chengzi aqueduct of Malibazu Dam are silt soft soil layers with low bearing capacity, large compressive deformation, deep buried base supporting layer and high groundwater level, resulting in obvious seepage destruction of excavation drainage of foundation pit, resulting in Foundation bearing capacity can not meet the design requirements. In order to solve the problem of basic bearing capacity, the project uses reinforced concrete bored piles to reinforce the foundations. This paper mainly introduces the basic geological conditions, the treatment measures and effects of the foundation of the Gongzi Aqueduct project in Mali Dam Reservoir, the cross pier arch gravity piers and the cap-bearing platform, which can provide reference for the engineering of similar geological conditions.