摘要
场地条件是地下水环境污染风险的主要影响因素,对其进行科学合理的评估是污染场地地下水环境污染风险评价结果可靠性的保证。针对以往地下水环境污染风险评价方法较单一和场地内条件评价模型不足等缺陷,利用层次分析法确定指标主观权重、熵权法确定指标客观权重,引入博弈论集结模型来计算指标综合权重的评价方法,构建了针对场地内条件差异性的渣场地下水环境污染风险评价模型,并将其应用于云南某场地地下水环境污染风险评价。实例评价结果表明:研究区内地下水环境污染风险呈现出由北向南递减的趋势,这与西北部黏土层厚度较低、中部防护措施较差等场地非均质条件有关;相较于单一指标权重确定方法,基于博弈论综合权重法在提升指标权重的客观性和准确性上具有综合优点,体现出该方法对高度非均质渣场地下水环境污染的针对性评估上具有良好的效果,可为污染场地后期修复范围及重点区域的确定提供更有针对性的数据支撑。
Site condition is the main influencing factor of groundwater pollution risk, and scientific and reasonable assessment is the guarantee of the reliability of the risk assessment results of contaminated site.In view of the shortcomings of the previous risk assessment methods of groundwater environmental pollution and the evaluation model of site conditions, this paper uses analytic hierarchy process to determine the subjective weight of indicators, the entropy weight method to determine the objective weight of indicators, and introduces the game theory aggregation model to calculate the comprehensive weight of indicator evaluation method.It constructs a risk assessment model for sewage environment pollution of slag site, which is applied to a risk assessment of groundwater environmental pollution in Yunnan province.The results of the case study shows that the risk decreased from north to south in the study area, which is related to the heterogeneity of the clay layer thickness in the northwest and the poor protection measures in the middle.Researches show that compared with the single index weight determination method, the game theory comprehensive weight method has comprehensive advantages in improving the objectivity and accuracy of index weight.The paper shows that this method has a good effect on the targeted evaluation of highly heterogeneous sites, and provides more targeted data support for the later restoration range of sites and determination of key areas in pollution sites.
作者
刘婧怡
王炎
汤家道
罗劲松
王鹏程
罗朝晖
LIU Jingyi;WANG Yan;TANG Jiadao;LUO Jingsong;WANG Pengcheng;LUO Zhaohui(School of Environmental Studies,China University of Geosciences(Wuhan),Wuhan 430078,China;Southwest Branch of Yunnan Copper Co.,Ltd.,Kunming650102,China)
出处
《安全与环境工程》
CAS
CSCD
北大核心
2023年第1期221-230,共10页
Safety and Environmental Engineering
基金
校企联合科技攻关项目(XNTY-2019-0112-科开-YWWB)。
关键词
污染场地
地下水环境污染
风险评价
博弈论综合权重法
contaminated site
groundwater environmental pollution
risk assessment
game theory comprehensive weighting method
