Evaluation of Groundwater Antifouling Performance in Zhuzhou Prefecture Based on DRASTIC Method
In order to understand the antifouling performance of groundwater in Zhuzhou prefecture,based on regional natural geography and hydrogeological conditions,the traditional DRASTIC evaluation method was used to select seven parameters as evaluation indicators:groundwater depth(D),net recharge of aquifer(R),aquifer medium(A),soil medium type(S),terrain slope(T),rock type of aquifer(I),and hydraulic conductivity coefficient of aquifer(C),and establish an evaluation system for the antifouling performance of groundwater in Zhuzhou prefecture.The results indicate that the overall antifouling performance of groundwater in Zhuzhou prefecture is poor to moderate,accounting for 53.19%of the total area of the study area.The distribution area of areas with good antifouling performance accounts for 16.36%of the total area,while the distribution areas of areas with good antifouling performance and areas with poor antifouling performance account for 15.82%and 14.63%of the total area,respectively.The areas with poor groundwater antifouling performance in Zhuzhou prefecture are mainly distributed in the terraces and karst limestone areas on both sides of the Xiangjiang river.Corresponding protective measures should be taken in this area to effectively protect groundwater resources and the environment.
万方数据
维普
