基于DRASTIC的济南北跨新城区浅层地下水防污性能评价

Assessment of Groundwater Vulnerability in Jinan Northern Based on DRASTIC

摘要:

该文根据济南北跨新城区浅层地下水水文地质条件，对DRASTIC模型评价因子进行了适当改进，选取含水层埋深、有效降水入渗量、含水层介质类型、包气带介质类型、地形坡度、粘性土厚度、含水层渗透系数作为评价因子，在研究区1∶5万工程地质图的基础上，按照4km×4km方格的形式将研究区划分57个单元，最后用加权法计算地下水防污性综合指标，把研究区分为防污性较差区和防污性中等区。

Abstract:

According to shallow groundwater hydrogeological conditions in Jinan Northern, improve evaluation factors of DRASTIC model, select aquifer buried depth , effective quantity of rainfall infiltration, aquifer medium type, medium type, terrain slope belt, cohesive soil thickness, permeability coefficient as evaluation factors, on the basis of the 1:50000 engineering geological map , according to the form of 4 km x 4 km squares will divide the study area into 57 units, the integrated index of groundwater vulnerability was calculated by the weighted method. The evaluation results is that the study area is divided to poor area and medium area.