基于层次分析法的地下水超采区划分评价

Evaluation of Groundwater Overexploitation Area Delimitation Based on Analytic Hierarchy Process

针对传统地下水超采区划分方法存在单一衡量指标的偶然性等问题,提出基于层次分析法的地下水超采区划分综合评价方法。运用该方法将地下水开采系数、地下水位下降速率、开采引发的生态地质问题作为影响因子,构建综合评价体系,并以榆次区为例,综合评价地下水超采区划分效果。结果表明,开采系数法和水位变幅法对超采区的划分较为合理,诱变环境因子指标法划分结果存在滞后性,有较大偏差。该研究为后期地下水超采区治理工作提供参考。

In view of the traditional methods to delimitate groundwater overexploitation area having problem of contingency of single measure, evaluation of groundwater overexploitation area delimitation based AHP was put forward. U- sing AHP and taking groundwater exploitation coefficient, drawdown rate, ecological geological problems induced by overexploitation as influencing factors, comprehensive evaluation system was established. Taking Yuci District as an example, the effect of overexploitation area delimitation was comprehensively evaluated. The results show that the delimitation result of exploitation coefficient method and water level amplitude method were reasonable, and the environmental factor index method was biased with the characteristics of posteriority. The study provides reference for later of groundwater overexploitation area management work.