生米九龙湖1号水利工程双层地基更换砂垫层设计研究

Study on Designing of Sand cushion Replaced in Double-layered Foundation of Shengmi Jiulong Lake No. 1 Water Conservancy Project

江西省生米九龙湖1号水利工程为典型的双层地基,但存在着严重的承载力不足和渗透性较差的问题,同时由于前期勘测结果不准确,导致了工程需要重新设计,施工难度大。采用更换砂垫层处理方法,解决了地基承载力不足的问题以及渗透性不足的问题,投资增加不大,施工之时亦十分方便,可以为类似工程提供借鉴。

Shengmi Jiulong Lake No. 1 Water Conservancy Project is a classical project with double-layered foundation but it is beset by seriously insufficient bearing capacity and inferior permeability. In the meantime,due to inaccurate surveying results in the incipient period,the project needs re-designing and hence construction difficulty is intense. Use of the disposal method of replaced sand cushion helps resolve insufficient bearing capacity of foundation soil and deficient permeability with low added input. It is quite handy during construction and can provide reference to analogous projects.