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上海地面沉降是通过一维基本固结方程和拉普拉斯变换进行计算的。它基于下列论断:①经典固结理论的有效性;②叠加原理在含水层边界水位条件分析中的适用性;③周期荷载下,土的双线性模型的可取性。本文分析指出,地面沉降现象可用地下抽水作用引起土层内应力重分布和由此导致的变形作合理的解释。将1965～1978年间的超静水压力和变形计算值同实测值作了比较,结果令人满意。此分析也为把地下水回灌作为控制沉降的一个有效措施提供了有力的理论依据。
Land subsidence in Shanghai is calculated using one-dimensional basic consolidation equations and Laplace transforms. It is based on the following conclusions: 1 The validity of the classical consolidation theory; 2 The applicability of the superposition principle in the analysis of water level conditions at the boundary of the aquifer; 3 The desirability of the bilinear model of the soil under cyclic loading. The analysis of this paper points out that ground subsidence can be reasonably explained by the effect of underground pumping on the redistribution of stress within the soil layer and the resulting deformation. The calculated values of the excess hydrostatic pressure and deformation from 1965 to 1978 were compared with the measured values and the results were satisfactory. This analysis also provides a strong theoretical basis for groundwater recharge as an effective measure to control settlement.