摘要
针对现有分析室内一维砂柱弥散试验数据，确定多孔介质纵向弥散度的方法，在考虑介 质对示踪剂的吸附作用的情况下不能应用的问题，对描述一维、稳定渗流与连续定浓度注入示 踪剂的砂柱弥散试验的近似解析解进行反函数变换，利用相关系数极值法的原理，建立了在多 孔介质与示踪剂间为均衡吸附条件下，可计算多孔介质纵向弥散度与阻滞系数的方法。而且， 这种方法在多孔介质的有效孔隙率为已知的情况下，还可计算出多孔介质对示踪剂的吸附系数。
To overcome the shortage of current methods which may not be applied in the case of taking adsorption into consideration, a suitable transformation is conducted on the approximate analytical solution which describes one-dimension indoor sandy column dispersion test in the condition of constant injecting concentration and steady seepage, and on the base of this, an analyzing data method is established according to the extreme principle of correlation coefficient. This method may be applied to estimate the values of longitudinal dispersivity, retarding coefficient and equilibrium adsorption coefficient if the effective porosity of porous medium is known.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2001年第2期172-176,共5页
Advances in Water Science
基金
中国科学院阜康荒漠生态系统观测试验站开放基金项目(200003)。
关键词
弥散试验
均衡吸附
参数计算
渗流
Correlation methods
Dispersion (waves)
Porosity
Sand
Seepage
