水平向非均质含水层地下水流动半解析数值分析

Analysis of semi-analytical method for unsteady groundwater flow in horizontally heterogeneous aquifers

利用C0修正的傅立叶级数,构建满足非均质含水层交界处流量连续条件的降深试探函数,提出分析水平向非均质含水层中地下水非稳定流动问题的半解析数值分析方法,由算例的计算分析验证了该方法的正确性和合理性,半解析数值分析结果满足流量连续条件.通过对有止水帷幕情况下基坑降水问题的模拟计算,进一步展示了该方法处理水平向非均质含水层中地下水非稳定流动问题的能力,拓展了半解析数值方法在地下水流动分析中的应用范围.

Based on C0 modified Fourier series,the trial function for satisfing the continuity condition of flow at the locations of abrupt changes of properties was constructed,a new semi-analytical method for the analysis of unsteady groundwater flow in the horizontally heterogeneous aquifers was presented.The validity of the presented method was approved by calculating some numerical examples using the method,the analysis results of semi-analytical method could satisfy the continuity condition of the flow.By the analysis of pit dewatering on the effect of the waterproof curtain,the capacity for solving the seepage problem in the horizontally heterogeneous aquifers was demonstrated,A the application of semi-analytical numerical method in groundwater flow was expanded.