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文中提出了两种分析一维、稳态和连续注入定浓度示踪剂条件下的半无限砂柱弥散实验数据，确定纵向弥散系数DL值的方法。与原有方法相比较，它们具有：1）由于避免了人工作图和读数，消除了人为因素对参数计算结果准确性的影响；2）易将求参过程程序化，由微机完成等优点。
Two kinds of experimental data of semi-infinite sand column dispersion under steady-state and continuous injection of certain concentrations of tracer are proposed in this paper to determine the DL value of longitudinal dispersion coefficient. Compared with the original methods, they have the following advantages: 1) Eliminating the influence of human factors on the accuracy of the parameter calculation due to the avoidance of manual drawing and reading; 2)