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Experimental investigation on the influence on mechanical properties and acoustic emission characteristics of granite after heating and water-cooling cycles

文献类型：期刊论文

作者Cui, Yuan2,4,5; Xue, Lei2,4; Zhai, Mengyang3; Xu, Chao2,4,5; Bu, Fengchang1; Wan, Li6
刊名GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
出版日期2023-12-01
卷号9期号:1页码:18
ISSN号2363-8419
关键词Granite Heating and water-cooling cycles Damage evolution Fracture mechanism Acoustic emission
DOI10.1007/s40948-023-00627-y
英文摘要This study explores explore the failure characteristics of high temperature granite under different numbers of heating-cooling cycles. Combining a series of laboratory uniaxial compression tests with acoustic emission (AE) monitoring, it reveals the AE characteristics and damage behavior of high temperature granite in different damage stages. Increasing the number of heating-cooling cycles exponentially raised the mass-loss and volume-increase rates of the granite and exponentially decreased the P-wave velocity. These results indicate that multiple heating-cooling cycles irreversibly damaged the high temperature rock mass. Moreover, the variations in both the P-wave velocity and the stress threshold at each stage gradually plateaued after three thermal cycles. Under uniaxial compression, the evolution mechanism of microcracks in the rock was successfully described by the AE characteristic parameters and real-time spatial AE position. The cumulative AE counts and AE energy rates were consistent in different damage stages of the rock specimen. Both quantities began increasing after entering the unstable crack growth stage. As the number of heating-cooling cycles increased, the main fracture mechanism of rock rupture transitioned from mixed mode to shear mode, as evidenced by the distributions of rise angle and average frequency. Meanwhile, the gradually increasing b-value indicated that small-scale fracture events gradually dominated the rock damage. The present results can assist the design of deep geothermal-resource mining schemes and safe mining constructions.
WOS关键词POTENTIAL STRAIN INDICATOR ; BRITTLE FAILURE PREDICTION ; HIGH-TEMPERATURE ; THERMAL-DAMAGE ; POROSITY ; MICROCRACKING ; THRESHOLDS ; EXPOSURE ; BEHAVIOR ; STRESS
资助项目National Natural Science Foundation of China[42090052] ; National Natural Science Foundation of China[41977249] ; National Key Research and Development Program of China[2019YFC1509701]
WOS研究方向Energy & Fuels ; Engineering ; Geology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:001021021400001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/111258]  
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Xue, Lei
作者单位1.Univ Lausanne, ISTE Inst Earth Sci, Risk Grp, Geopolis 3793, CH-1015 Lausanne, Switzerland
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Zhengzhou Univ, Yellow River Lab, Zhengzhou 450001, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
6.North China Univ Water Resources & Elect Power, Coll Geosci & Engn, Zhengzhou 450046, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Yuan,Xue, Lei,Zhai, Mengyang,et al. Experimental investigation on the influence on mechanical properties and acoustic emission characteristics of granite after heating and water-cooling cycles[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2023,9(1):18.
APA Cui, Yuan,Xue, Lei,Zhai, Mengyang,Xu, Chao,Bu, Fengchang,&Wan, Li.(2023).Experimental investigation on the influence on mechanical properties and acoustic emission characteristics of granite after heating and water-cooling cycles.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,9(1),18.
MLA Cui, Yuan,et al."Experimental investigation on the influence on mechanical properties and acoustic emission characteristics of granite after heating and water-cooling cycles".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 9.1(2023):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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