我国碳储工程环境影响机理及其评价体系研究

摘要

On the basis of physicochemical properties and hazard of CO2 and analysis of carbon storage engineering projects, the carbon geological storage engineering is divided into three stages including construction stage, operation stage, site closure and post-closure stage, with key content of engineering analysis for different stages. At the same time, the environmental impacts and related mechanisms of carbon geological storage engineering on groundwater, soil, ecological vegetation and air are studied and summarized. Moreover, an indicator system of environmental impact assessment of carbon storage in deep saline aquifer in China is established, with four levels such as characteristic indicators of storage sites, environmental indicators of geological interference, indicators of environmental capacity, and indicators of ecological impact, providing scientific basis for improvement of the environmental impact assessment of carbon geological storage engineering in China.%在CO2的理化性质及其危险和碳储项目工程分析的基础上，将我国碳储工程划分建设期、运营期、场地关闭及闭场后3大阶段，给出不同阶段工程分析的重点内容。同时，研究与总结了我国碳储工程对地下水、土壤、生态植被和大气等环境影响及其机理，并构建我国深部咸水层CO2地质储存环境影响评价指标体系。该评价体系分为储存场地特征指标类、干扰地质环境指标类、环境容量指标类、生态影响指标类4个层次，为完善我国碳储工程环境影响评价提供依据。