安徽省沉积盆地CO2地质储存适宜性评价

摘要

CO2的地质储存已成为减缓温室效应的一条有效的途径.区域的CO2地质储存适宜性评价是选址建设CO2地质储存工程的基础,而建立适当的评价指标体系与选择合理的评价方法对于CO2地质储存适宜性评价起到至关重要的作用.本次研究以安徽省内CO2减排需要为目的,根据研究区实际的地质条件,从CO2的地质储存所关联的多重因素出发,建立起包括安全性、技术性、经济性与社会环境性4个方面的评价指标体系,并引入变异系数法对评价指标确定权重与TOPSIS模型对研究区的CO2地质储存盆地适宜性进行排序.研究结果表明:阜阳盆地与合肥盆地为优先选择的CO2地质储存盆地.评价结果为安徽省初步选址CO2地质储存工程建设提供了科学依据.%Geological storage of CO2 has become one of the effective ways for reducing greenhouse gas emissions.Regional suitability evaluation of geological storage of CO2 is the basis of choosing sites of construction of geological storage of CO2.Establishment of proper evaluation index systems and selection of reasonable evaluation methods play a crucial role in the suitability evaluation of geological storage of CO2.For the propose of CO2 reduction needs of Anhui Province,according to the actual geological conditions of the study areas and from the multiple aspects of associated CO2 geological storage,the research built an evaluation index system of four aspects,which include security,technicality,economy and social environment.The variation coefficient method is introduced to determine the weight and the TOPSIS model is used for ranking the suitability of CO2 geological storage basin in the study areas.The results of the evaluation show that the Fuyang Basin and the Hefei Basin are prior selection for geological storage of CO2.The evaluation results provide a scientific evidence for preliminary choosing engineering construction of geological storage of CO2.