Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression
The nonuniform distribution of organic matter in oil shale strata results in different mechanical response and failure mechanism. Uniaxial compression test, digital image correlation method and infrared thermal imaging technology were used to study the deformation field, temperature field and energy...
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| Format: | Article |
| Language: | English |
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SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2022-06-01
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| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6608 |
| _version_ | 1811220385724628992 |
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| author | WANG Lu-nan TAO Chuan-qi YIN Xiao-meng HAN Jie YANG Lei ZHANG Gan-ping |
| author_facet | WANG Lu-nan TAO Chuan-qi YIN Xiao-meng HAN Jie YANG Lei ZHANG Gan-ping |
| author_sort | WANG Lu-nan |
| collection | DOAJ |
| description | The nonuniform distribution of organic matter in oil shale strata results in different mechanical response and failure mechanism. Uniaxial compression test, digital image correlation method and infrared thermal imaging technology were used to study the deformation field, temperature field and energy evolution characteristics of oil shale during the whole loading process under different organic matter abundances, and to reveal the influence of organic matter abundance on mechanical properties and deformation and failure mechanism of oil shale. The results show that the stress-strain characteristics of oil shale present gradual attenuation as the organic matter abundance increases, while the ductility has improved significantly. The failure mode changes from splitting tensile failure to tension-shear compound failure, which is attributed to the fact that organic matter abundance affects the control degree of bedding planes on the macroscopic crack evolution. Moreover, the deformation field and temperature field exhibit obvious localized features during loading. With the increase of organic matter abundance, the surface deformation and infrared temperature increase, and the degree of differentiation of the two fields also intensifies. In addition, organic matter abundance also affects the energy transformation and distribution of oil shale. With the increase of organic matter abundance, the energy absorption, storage and release properties weaken, while the dissipation property enhances, causing a lower overall energy state. This is the essential reason for the differences in mechanical properties and deformation and failure laws of oil shale with different organic matter abundances. |
| first_indexed | 2024-04-12T07:41:57Z |
| format | Article |
| id | doaj.art-35991250f0f74c998b46d5600c0263ec |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-04-12T07:41:57Z |
| publishDate | 2022-06-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-35991250f0f74c998b46d5600c0263ec2022-12-22T03:41:48ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982022-06-014361557157010.16285/j.rsm.2021.6608Evolution of deformation field and energy of organic-rich oil shale under uniaxial compressionWANG Lu-nan0TAO Chuan-qi1YIN Xiao-meng2HAN Jie3YANG Lei4ZHANG Gan-ping 51. School of Civil Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 2. Liaoning Key Laboratory of Petro-chemical Special Building Materials, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 1. School of Civil Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 2. Liaoning Key Laboratory of Petro-chemical Special Building Materials, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 3. College of Intelligent Construction, Wuchang University of Technology, Wuhan, Hubei 430223, China1. School of Civil Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 2. Liaoning Key Laboratory of Petro-chemical Special Building Materials, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 1. School of Civil Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, China 1. School of Civil Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, ChinaThe nonuniform distribution of organic matter in oil shale strata results in different mechanical response and failure mechanism. Uniaxial compression test, digital image correlation method and infrared thermal imaging technology were used to study the deformation field, temperature field and energy evolution characteristics of oil shale during the whole loading process under different organic matter abundances, and to reveal the influence of organic matter abundance on mechanical properties and deformation and failure mechanism of oil shale. The results show that the stress-strain characteristics of oil shale present gradual attenuation as the organic matter abundance increases, while the ductility has improved significantly. The failure mode changes from splitting tensile failure to tension-shear compound failure, which is attributed to the fact that organic matter abundance affects the control degree of bedding planes on the macroscopic crack evolution. Moreover, the deformation field and temperature field exhibit obvious localized features during loading. With the increase of organic matter abundance, the surface deformation and infrared temperature increase, and the degree of differentiation of the two fields also intensifies. In addition, organic matter abundance also affects the energy transformation and distribution of oil shale. With the increase of organic matter abundance, the energy absorption, storage and release properties weaken, while the dissipation property enhances, causing a lower overall energy state. This is the essential reason for the differences in mechanical properties and deformation and failure laws of oil shale with different organic matter abundances.http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6608oil shaleorganic matter abundancedeformation fieldtemperature fieldenergy characteristics |
| spellingShingle | WANG Lu-nan TAO Chuan-qi YIN Xiao-meng HAN Jie YANG Lei ZHANG Gan-ping Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression Rock and Soil Mechanics oil shale organic matter abundance deformation field temperature field energy characteristics |
| title | Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression |
| title_full | Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression |
| title_fullStr | Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression |
| title_full_unstemmed | Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression |
| title_short | Evolution of deformation field and energy of organic-rich oil shale under uniaxial compression |
| title_sort | evolution of deformation field and energy of organic rich oil shale under uniaxial compression |
| topic | oil shale organic matter abundance deformation field temperature field energy characteristics |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6608 |
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