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本文首先讨论了水动力弥散机理,指出了前人在机理解释方面的某些不足。然后结合野外弥散试验的体会,简单地对比了水质模型与水量模型,较详细地分析了野外实际地层中局部非均质、非均质集合体及人为因素对弥散试验及水质模型的影响。所得结论对于弥散机理分析、弥散试验资料解释、探讨野外弥散参数偏大的原因等方面均具有一定意义。
This paper first discusses the mechanism of hydrodynamic dispersion and points out some of the deficiencies of the predecessors in the mechanism interpretation. Then, combined with the experience of field dispersion experiments, the water quality model and water quantity model were simply compared, and the effects of local heterogeneity, heterogeneous aggregates, and human factors on the dispersion test and water quality model in the actual field formation were analyzed in more detail. The conclusions obtained have some significance for the analysis of dispersion mechanism, interpretation of dispersion test data, and exploration of the reasons for the overlarge field dispersion parameters.