摘要
地热资源是一种极具竞争力的清洁可再生能源,对其合理的开发和利用必将成为我国推动能源结构性改革、顺利实现“双碳”目标的重要助力。干热岩作为地热资源的重要组成部分,以其分布的普遍性、稳定性和热储体/层的高温性而更具开发潜力。干热型地热资源潜力估算是进行资源远景区对比性研究的重要环节,是进行靶区优选、孔位选址和开发利用的基础性工作。本文基于区域性航磁测量数据,修订广西居里面埋深和地温梯度分布图。通过甄选热储体/层密度及比热容参数,计算不同深度的埋藏地温,并采用体积法对广西干热岩资源潜力进行估算。研究结果显示,广西陆域(3~10 km深度)干热型地热资源总量为55.42×10^(4)EJ,折合标准煤18.94万亿t;按2%的可采资源量计算,相当于我国2020年一次能源消耗总量的75.94倍;广西干热型地热资源主体赋存于6~10 km,热储温度以200~250℃为主,占资源总量的50.16%,具有巨大的开发利用潜力。
As one of clean renewable energy,geothermal resources are very competitive.Its rational development and utilization will surely promote the national energy structural reform and achieve the goal of carbon neutrality and emission peak.As an important part of geothermal resources,hot-dry rock has great potential due to its universality,stability,and high temperature.The potential estimation of hot-dry geothermal resources is an important part of the comparative study of resource prospects,as it is the basic work of target selection,hole location,and development and utilization.Based on the regional aeromagnetic survey data,we modified the distribution maps of Curie point depth and geothermal gradient in the continental area of Guangxi.Through selecting the parameters of density and specific heat capacity,we calculated the buried ground temperature at different depths and estimated the resource potential of hot-dry rocks in Guangxi by using the volume method.The results show that the total amount of hot-dry geothermal resources in the continental area in Guangxi in the depth of 3-10 km is 55.42×10^(4)EJ,which is equivalent to the heat of 18.94 trillion tons of standard coal.This resources is estimated to be 75.94 times of China’s total energy consumption in 2020 calculated on the basis of 2%recoverable amount.The hot-dry geothermal resources mainly exist in the depth of 6-10 km,and the heat storage temperature is mainly 200-250℃,accounting for 50.16%,which has huge development potential.
作者
孙明行
王瑞湖
管彦武
刘德民
Sun Minghang;Wang Ruihu;Guan Yanwu;Liu Demin(Guangxi Institute of Geological Survey,Nanning 530023,China;College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China;School of Earth Sciences,China University of Geosciences,Wuhan 430074,China)
出处
《吉林大学学报（地球科学版）》
CAS
CSCD
北大核心
2022年第4期1302-1313,共12页
Journal of Jilin University：Earth Science Edition
基金
广西关键矿产资源深部勘查人才小高地项目(桂组通字[2019]85号)
广西合浦盆地干热型地热资源调查项目(桂地矿地[2021]23号)
关键词
广西
干热岩
地热资源
潜力估算
Guangxi
hot dry rock
geothermal resource
potential estimation
作者简介
孙明行(1989—),男,工程师,主要从事区域地质矿产调查和地热地质方面的研究,E-mail:smhgxddy@163.com;通信作者:管彦武(1976—),男,副教授,博士,主要从事重磁勘探和地热方面的研究,E-mail:Guanyw@jlu.edu.cn
