飞来峡防汛综合楼冲孔灌注桩施工处理技术

Technology of Punching Cast-in-situ Pile construction of Feilaixia Flood Prevention Complex

结合飞来峡水利枢纽防汛生产调度中心综合楼建设工程,对该工程采用的混凝土冲孔灌注桩基础的施工工序及遇到溶洞时的施工处理技术进行阐述,并对采用不同方法浇筑的泥浆护壁冲孔灌注桩进行了检测。根据检测结果建议精确掌握场地工程地质条件,提出在溶洞地区建设的工程应加大对超前钻阶段的资金投入。

In combination of construction of the complex for flood prevention, production and dispatching center of Feilaixia project, the working procedure of the punching cast-in-situ concrete pile foundation applied to the complex and the treatment technology of foundation in condition of the karst cave are described. Meanwhile, the punching cast-in-situ concrete piles, with their wall protected by slurry, built by application of different methods are detected. The detecting results demonstrate that the engineering geological conditions of site shall be learnt precisely and cost of investigation by drilling operation for project to be built in karst cave region shall be increased.