摘要
弥散理论是污染质在含水层中运移模型的基本理论.但在实际应用中存在着不少问题和争议.本文对污染质在含水层中运移的弥散作用进行了分析探讨.并应用MOC水质模型对弥散参数的作用进行了分析,证明了在一般情况下,污染质在含水层中的运移主要受对流作用控制,弥散参数的变化对水质模型结果的影响相对较小.在特定的水文地质条件下,弥散作用对污染质的运移是重要的.
Dispersion is the basic theory for pollutants transportation in aquifer, however, many difficulties and arguments are existed in practice.This paper mainly deals with the dispersion of pollutants in aquifer. The influence and sensitivity of dispersion parameters to water quality predicting model has been achieved by using MOC model. According to the simulation results, the transportation of pollutants in aquifer is mainly controlled by advection. Dispersion plays a litte role in the model.Under some hydrogeological conditions. dispersion is important to solute transport.
