介绍了DRASTIC模型的七个评价因子:地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质I的影响和含水层的导水系数。以地理信息系统(MAPGIS软件)为基础平台,结合地下水污染风险评价专业模型(DRASTIC模型),评价了贵阳市地下水污染风险,并进行了模型验证。通过MAPGIS软件做出了贵阳市地下水污染风险预测图,并对贵阳市地下水污染风险提出了防治对策,最后对地下水污染风险评价进行了总结与展望。
The paper introduces seven factor of DRASTIC model: Depth of water table, Net recharge, Aquifer media, Soil media, Topography. Impact of Vadose Zone and Hydraulic Conductivity. It sets the geographic information system (Software MAPGIS ) as the basic platform, combining with the professional model (DRASTIC model) for evaluating groundwater contamination risk, evaluates the risk this area and tests the model. By software MAPGIS, it draw up a forecast map of groundwater contamination risk in Guiyang city, puts forward some countermeasures, concludes and prospects the evaluation at last.