越流区承压含水层特殊脆弱性评价模型  

Specific vulnerability assessment model for the confined aquifer in a leakage area

作　　者：孟完萌[1] 田富强[1] 胡和平[1] 

机构地区：[1]清华大学水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2010年第6期844-847,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50779022)

摘　　要：在中国一些水资源短缺地区的承压含水层被大量开采。为了针对性地对其进行保护,该文对承压含水层脆弱性评价。通过阐释越流区承压含水层受到污染的原因,以承压含水层顶板处污染物浓度超过最大允许浓度的累计时间作为承压含水层特殊脆弱性指数,基于溶质运移方程,采用数值计算,得到承压含水层特殊脆弱性指数,从而避免了评价因子权重分配的任意性。以济宁市承压含水层脆弱性评价为例,对模型的可靠性进行了测试,其评价结果与该地区两年后总硬度升高值的分布状况吻合较好。A specific vulnerability assessment model was developed for a confined aquifer in a leakage area.The total time that a pollutant concentration at the coping of a confined aquifer exceeds the maximum allowable concentration defined as the specific vulnerability index for the confined aquifer can be obtained by numerically solving the solute transport equation.This method eliminates the uncertainty of determining the evaluation factor weights.Results for Jining,Shandong Province in China are reasonably consistent with the change of the total hardness concentration over 2 years.

关 键 词：特殊脆弱性 承压含水层 越流 溶质运移 

分 类 号：P641.8[天文地球—地质矿产勘探]