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.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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)
关键词
特殊脆弱性
承压含水层
越流
溶质运移
specific vulnerability
confined aquifer
leaky
solute transport
