不同的软土地基基坑围护结构降水设计对地下水水头有不同的影响，从而产生不同的地面沉降。
Dewatering for different foundation pit fencing structures in soft ground has different impacts on the head of ground water, causing different ground settlement.
模型考虑了地下水中溶解盐分浓度变化引起的地下水密度的改变，及其导致的地下水水头的变化。
In the model the fluid density variation due to solution concentration change and the head distribution variation resulted from the fluid density change are considered.
分析表明，承压含水层中地下水水头波幅是上、下弱透水层贮水率和越流系数的减函数，是淤泥层相对透水系数的增函数；
The amplitude of the head fluctuation decreases with the storativity and leakage of both semi-permeable layers and increases with the leakance of the silt-layer.
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