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Excavation based enhanced geothermal system (EGS-E): introduction to a new concept

文献类型：期刊论文

作者Zhao, J.3; Tang, C. A.1; Wang, S. J.2
刊名GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
出版日期2020-03-01
卷号6期号:1页码:7
关键词Enhanced geothermal system (EGS) Deep rock excavation Hot water reservoir Hot dry rock Heat transfer
ISSN号2363-8419
DOI10.1007/s40948-019-00127-y
英文摘要The current technology for enhanced geothermal system (EGS) typically involves drilling of deep injection and production wells to inject cold water into the injection well to the EGS reservoir depth, to extract heat by permeating through the fractured hot rock masses, collected by the production well and return to the surface as heated water. In this article, a new approach is proposed to develop EGS based excavation technology (EGS-E). This method consists of (1) excavation to deep rocks, including a deep shaft from surface to the EGS depth, a room-and-pillar mined cavern complex to be filled with water to become a large underground heated water reservoir in the hot rocks; (2) enhanced heat extraction from rock, aided by additional drillholes spreading out and down from the caverns, and induced fracturing of the surrounding rocks for enhanced rock-water heat transfer; (3) enclosed heat transmission from heated water reservoir to the power plant by using independent heat conducting pipes running between them, continuously supplying the heat for power generation, without water movement in the reservoir. EGS-E offers the following advantages: (1) utilizing mechanized rock excavation technology for large volume energy production; (2) greatly increasing heat extraction volume by easily extending vertically and horizontally; (3) maximize the energy transfer from hot rock to the water reservoir; and (4) separated heat transmission from heated water reservoir in EGS to power plant to minimize environmental pollution.
WOS关键词HOT DRY ROCK ; INDUCED SEISMICITY ; CHALLENGES ; OPPORTUNITIES ; STIMULATION ; PROJECT
WOS研究方向Energy & Fuels ; Engineering ; Geology
语种英语
WOS记录号WOS:000494427500003
出版者SPRINGER HEIDELBERG
源URL[http://ir.iggcas.ac.cn/handle/132A11/95736]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Zhao, J.
作者单位1.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia
推荐引用方式
GB/T 7714		 Zhao, J.,Tang, C. A.,Wang, S. J.. Excavation based enhanced geothermal system (EGS-E): introduction to a new concept[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2020,6(1):7.
APA Zhao, J.,Tang, C. A.,&Wang, S. J..(2020).Excavation based enhanced geothermal system (EGS-E): introduction to a new concept.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,6(1),7.
MLA Zhao, J.,et al."Excavation based enhanced geothermal system (EGS-E): introduction to a new concept".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 6.1(2020):7.

入库方式： OAI收割

来源：地质与地球物理研究所

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