摘要
选择理想靶区建立中国第一个EGS示范工程,在中国节能减排及应对全球气候变化过程中具有重大的战略意义。根据全国大地热流图、居里面深度图、新构造运动图、酸性岩体分布图,通过剖面分析,将中国EGS靶区分为板块构造活动、近代火山、沉积盆地和酸性岩体分布4种类型,分析了各类型干热岩靶区的产热特征。遴选了10个靶区通过建立指标体系进行EGS示范工程选址指标分析,指标包括大地热流、热储岩性、覆盖层厚度、居里面深度、地应力(构造历史)、放射性生热率、地温梯度、区域经济8个指标,在对指标分析打分的基础上最终确定羊八井、阳江、漳州、福州等为中国EGS潜在靶区。通过典型地区的热结构剖面分析说明了评价结果的合理性。
Selection of ideal target site to establish the enhanced geothermal system （EGS） trial project in China has strategic significance to China in the process of energy conservation and coping with global climate change. Four types of target sites, namely plate tectonic activity, recent volcano, sedimentary basins and acidic rock areas are defined by their differential heat generation characteristics based on profile analysis using the national terrestrial heat flow map, Curie depth map, neotectonic map and acid rock distribution map. Eight indexes including heat flow, reservoir lithology, caprock thickness, Curie depth, tectonic stress, radioactive heat generation rate, temperature gradient and regional economics are used for establishing the target site evaluation system. Ten potential sites are evaluated comprehensively based on the index matrix system. The results show that Yangbajing, Yangjiang, Zhangzhou, Fuzhou could be the optimum target sites. Heat structure section analysis of two potential target sites was carried out to demonstrate the rationality of the matrix evaluation.
出处
《科技导报》
CAS
CSCD
北大核心
2015年第8期41-47,共7页
Science & Technology Review
基金
中国地质科学院水文地质环境地质研究所基金项目(SK201212)
中国地质调查局地质调查项目(12120113077900)
关键词
增强型地热系统
示范工程
靶区选址
指标矩阵
enhanced geothermal system
trial project
target site selection
index matrix
