摘要
该文将描述瞬时投放示踪剂、一维稳定流场二维非稳定水动力弥散过程中的示踪剂浓度在时空上变化的解析解进行了对数变换 ,得到一直线方程。根据方程中的自变量与因变量的相关系数应达到极值的原理 ,推导出了计算包在自变量中的地下水流速u的公式。在计算出u值之后 ,对试验数据进行适当变换 ,就可利用线性回归法计算直线常数 ,从而可计算出含水层的有效孔隙率ne,纵向与横向弥散度αL 与αT 等另外三个参数值。
In the paper, the logarithmic transformation for the analytic solution on the space-time change of the tracer concentration during the instantaneous injection and the process of the one dimensional steady flow field and two-dimensional unsteady hydrodynamic dispersion is performed, and the linear equations have been obtained. Based on the principle that the correlation coefficient of the independent and dependent variables in the equation should be the extreme, the formula to calculate the flow velocity u is derived. Then a proper transformation of the test data is made, the linear constants can be computed using the linear regression method. Thereby, the three parameters of the effective porosity n e , the longitudinal and transverse dispersivity α L and α T of the aquifer can be calculated.
出处
《勘察科学技术》
2001年第1期26-30,共5页
Site Investigation Science and Technology
基金
中国科学院阜康荒漠生态系统观测研究试验站资助! (2 0 0 0 0 3)
