摘要
松辽盆地是我国重要的能源与工业基地,CO_(2)排放量大,同时赋存良好的地下咸水层,具备开展CO_(2)地质封存的潜力。为实现该区域咸水层CO_(2)地质封存的科学选址,系统评价其封存适宜性,本文以松辽盆地南部中央坳陷区为研究对象,采用基于地理信息系统(GIS)的多准则决策分析(MCDA)方法,综合考量研究区域咸水层CO_(2)地质封存工程地质条件、封存潜力及社会经济因素。首先,构建了由3个一级指标与31个二级指标组成的评价指标体系,其次利用GIS将各评价指标数据分别生成分辨率为1 km的栅格图层,然后以分级标准为准则对栅格数据进行重分类,接着结合层次分析法(AHP)所确定指标权重对各指标栅格图层进行加权叠加,最后生成研究区咸水层CO_(2)地质封存适宜性分区图。结果表明:研究区内适宜区主要分布于红岗阶地北部小部分地区与长岭凹陷西南部,约占区域总面积的24.0%;不适宜区集中分布于扶新隆起带,仅占区域总面积的6.8%;适宜和较适宜区合计占比近56.0%。松辽盆地南部中央坳陷区超过半数区域具备咸水层CO_(2)地质封存的基本条件,下一步可进行进一步优选与工程部署。
The Songliao basin,a vital energy and industrial base in China,has substantial CO 2 emissions and abundant underground saline water,possessing potential for CO 2 geological sequestration.To enable the scientific selection of sites for CO 2 geological storage in saline aquifer and to systematically evaluate the storage suitability of this region,this study focuses on the Central depression of Southern Songliao basin,analyzing the engineering geological conditions,sequestration potential,and socioeconomic conditions with a geographic information system(GIS)based multi-criteria decision analysis(MCDA)approach.Firstly,an evaluation indicator system comprising 3 primary indicators and 31 secondary indicators was established.Secondly,GIS was used to generate a 1 km-resolution raster layer of the data for each evaluation indicator.Then,reclassify the raster data according to the classification criteria.Finally,the raster layers for each indicator were overlaid with weighted values based on the weights determined by the analytic hierarchy process(AHP)and generate a suitability map for CO 2 geological storage in saline aquifers in the Central depression area of the southern Songliao basin.The results indicate that suitable areas are mainly located in the northern portion of the Honggang terrace and the southwestern part of the Changling depression,accounting for approximately 24.0%of the total regional area.Unsuitable areas are concentrated in the Fuxin uplift,accounting for only 6.8%of the total regional area.In total,nearly 56.0%of the area is suitable or relatively suitable for CO 2 geological sequestration in saline aquifers.More than half of the areas within the Central depression in the southern Songliao basin meet the fundamental requirements for CO 2 geological storage in saline aquifers.Further optimization and engineering deployment can proceed.
作者
冯波
谢一平
田海龙
封官宏
杨金钢
Feng Bo;Xie Yiping;Tian Hailong;Feng Guanhong;Yang Jingang(College of New Energy and Environment,Jilin University,Changchun 130021,China;Jilin Province Cross-Regional Cooperation Science and Technology Innovation Center of Ultra-High Thermal Conductivity Materials and Middle-Low Temperature Thermal Energy Carbon Reduction Technologies(Jilin Jianzhu University),Changchun 130118,China)
出处
《吉林大学学报(地球科学版)》
北大核心
2025年第6期1981-2000,共20页
Journal of Jilin University:Earth Science Edition
基金
四川省科技计划项目(2024NSFSC0092)。
关键词
松辽盆地
咸水层CO_(2)地质封存
层次分析法
GIS
适宜性评价
碳中和
Songliao basin
CO 2 geological storage in saline aquifers
analytic hierarchy process
GIS
suitability assessment
carbon neutral
