The finite difference method is used to solve the coupling model, and the influence of starting pressure gradient on the distribution of groundwater pollutant concentrations is analyzed.
采用有限差分法和混合有限分析法对耦合模型进行数值求解，并分析了启动压力梯度对地下水污染浓度的影响。
2
The relationship between the factors such as gradient, loads and groundwater and the slope stability in lake tunnel excavation should be known.
湖底隧道建设中，各种因素如边坡坡度，坡上超载以及地下水等对开挖时边坡稳定性的影响必须确定。
3
Due to groundwater pumping the water level is lowered, the buoyancy in covering soil is decreased, the hydraulic gradient and flow velocity are increased, and the corrosion is enhanced.