Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite

doi:10.1016/j.renene.2020.12.042

	Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite
	Yang, Fujian 1,2; Wang, Guiling 3; Hu, Dawei 1,2; Liu, Yanguang 3; Zhou, Hui 1,2; Tan, Xianfeng 4
刊名	RENEWABLE ENERGY
	2021-05-01
卷号	168 页码:544-558
关键词	Hot dry rock Thermo-hydro-mechanical coupling Thermal conductivity Water permeability Biot's coefficient Correlation model
ISSN号	0960-1481
DOI	10.1016/j.renene.2020.12.042
英文摘要	Knowledge of thermo-hydro-mechanical (THM) coupling process is important for rock hydrofracturing of enhanced geothermal systems (EGS). The THM coupling parameters (e.g. thermal conductivity, water permeability and Biot's coefficient, etc) of granite undergoing treatment with heating and water cooling (HWC) were measured using laboratory tests. A large number of cracks inside the granite are caused by the uncoordinated deformation of minerals and the tensile stress induced by the treatment of HWC were clearly observed by scanning electron microscope (SEM), resulting in degradations of physicomechanical behavior and capacity of heat transmission, and increases of effective stress and connectivity of transport path. Compared with the treatments of heating and natural cooling or heating in realtime in previous studies, the temperature threshold of THM coupling parameters are advanced for HWC treated granite, especially for thermal conductivity, water permeability, Biot's coefficient and brittle-plastic transition. Prediction models for THM coupling parameters are established based on the correlation analysis. The predictions are in good agreement with the experimental observations. The results are likely to provide an outlet for understanding the characteristics of dry hot rock undergoing hydraulic fracturing or thermal stimulation, especially for the variations and predictions in THM coupling parameters. (c) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Key Research and Development Program of China, China[2018YFC0809600] ; National Key Research and Development Program of China, China[2018YFC0809601] ; National Natural Science Foundation of China, China[51779252] ; Major Technological Innovation Project of Hubei, China[2017AAA128]
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000617118000009
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25785]
专题	中科院武汉岩土力学所
通讯作者	Hu, Dawei
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China 4.Shandong Prov Lunan Geoengn Invest Inst, Jining 272100, Peoples R China
推荐引用方式 GB/T 7714	Yang, Fujian,Wang, Guiling,Hu, Dawei,et al. Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite[J]. RENEWABLE ENERGY,2021,168:544-558.
APA	Yang, Fujian,Wang, Guiling,Hu, Dawei,Liu, Yanguang,Zhou, Hui,&Tan, Xianfeng.(2021).Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite.RENEWABLE ENERGY,168,544-558.
MLA	Yang, Fujian,et al."Calibrations of thermo-hydro-mechanical coupling parameters for heating and water-cooling treated granite".RENEWABLE ENERGY 168(2021):544-558.