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针对地基的地下水的不良影响,对土的渗透系数和渗透力进行了分析,指出了地下水的渗流对地基不均匀沉降的影响较大。当天然土具有较强透水性时,易造成地下水流对地基的冲刷。对地基中地下水位的变化的影响进行了分析,提出了地下水在基底下压缩层范围内变化可降低土的极限荷载,地下水在换土垫层范围内变化可降低周围软弱土侧向支承力。
According to the adverse effect of groundwater on foundation, the permeability coefficient and seepage force of soil are analyzed. It is pointed out that the seepage of groundwater has a great influence on the uneven subsidence of foundation. When natural soil has a strong water permeability, easily lead to groundwater erosion of the ground. Based on the analysis of the influence of groundwater level changes in foundation, the paper puts forward that the groundwater can reduce the ultimate load of soil under the compression layer under the ground and the change of groundwater within the soil cushion can reduce the lateral bearing capacity of surrounding soft soil.