几种地下水易污性评价方法在徐州张集地区的应用

Comparative analysis of several assessment methods of groundwater vulnerability applied to Zhangji area of Xuzhou City

选择GOD法、DRASTIC法S、INTACS法及SI法4种易污性评价方法用于徐州张集地区的地下水易污性评价,应用GIS/ARCINFO输出张集地区的地下水易污性指标图。不同易污性评价方法对张集地区裂隙岩溶地下水的易污性评价得到了不同的结论,经分析,SI法更适用于张集地区的实际情况。具体应用时,要根据评价地区的实际条件,并和评价地区污染监测情况结合,选择合适的易污性评价方法评价地下水的易污性。

Four different methods, i.e. GOD method, DRASTIC method, SINTACS method, and SI method, were applied to assessment of groundwater vulnerability to pollution in Zhangji area of Xuzhou City, and the map for groundwater vulnerability was drawn by use of GIS/ARCINFO. Different results about vulnerability of fissured-karstic aquifer in Zhangji area were obtained by use of different methods, and it is concluded that SI method is the most suitable method for this area. As a result, it is suggested that rational assessment methods of groundwater vulnerability should be selected based on the practical situation and real-time monitoring data of pollution of the areas to be assessed.