超厚淤泥质土基坑回填施工

Backfill Construction of Super Thick Silty Soil Foundation Pit

在基坑施工时,上部回填土被开挖,支护桩及工程桩在超厚淤泥层处于悬臂状态,外力作用下极易引起偏位问题,主体结构施工后需对结构持续进行监测,待地下室对称封闭后方可进行回填,否则回填容易造成结构位移及周边滑坡,造成结构安全隐患。论文结合某淤泥地质地下室结构基坑回填工程,详细阐述施工方案设计及施工工艺,给相关工程施工提供参考。

During the construction of foundation pit, the upper backfill soil is excavated, and the retaining piles and engineering piles are in cantilever state in the super-thick silt layer, after the construction of the main structure, the structure should be continuously monitored and backfilled only after the basement is closed symmetrically. Otherwise, the backfill will easily cause the structure displacement and the surrounding landslide, which will cause the hidden danger of the structure safety. Combined with the foundation pit backfilling project of a silt geological basement structure, this paper expounds the construction scheme design and construction technology in detail, and provides reference for related projects construction.