Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock
In this paper, we investigated the gas permeation properties of fractured rock during the process of stage load axial stress and cyclic load and unload confining pressure and come to some conclusions as follows: (1) the relationship between radial strain and deviatoric stress satisfied the quadratic...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2019/1967080 |
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| author | Yushun Yang Dongming Zhang Shujian Li |
| author_facet | Yushun Yang Dongming Zhang Shujian Li |
| author_sort | Yushun Yang |
| collection | DOAJ |
| description | In this paper, we investigated the gas permeation properties of fractured rock during the process of stage load axial stress and cyclic load and unload confining pressure and come to some conclusions as follows: (1) the relationship between radial strain and deviatoric stress satisfied the quadratic polynomial function, and the relationship between permeability and deviatoric stress satisfied the exponential function under different axial stress levels; (2) in the staged load axial stress process, the axial strain-deviatoric curves of specimens conform to the quadratic polynomial function. The axial strain-deviatoric curves of specimens conform to linear function when confining pressure is 8.6 MPa or 2.0 MPa at different axial stress levels; (3) we used the permeability damage rate and maximum permeability damage rate to evaluate the recovery degree and reduction extent of permeability; (4) we used the volume expansion ratio and the maximum volume expansion ratio to evaluate the expansion degree and increase extent of rock samples’ volume. |
| format | Article |
| id | doaj-art-b50ff8238de14e5fbc475f169fda1405 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-b50ff8238de14e5fbc475f169fda14052025-02-03T01:30:16ZengWileyGeofluids1468-81151468-81232019-01-01201910.1155/2019/19670801967080Study on Deformation and Permeation Properties of Gas-Containing Fractured RockYushun Yang0Dongming Zhang1Shujian Li2State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaIn this paper, we investigated the gas permeation properties of fractured rock during the process of stage load axial stress and cyclic load and unload confining pressure and come to some conclusions as follows: (1) the relationship between radial strain and deviatoric stress satisfied the quadratic polynomial function, and the relationship between permeability and deviatoric stress satisfied the exponential function under different axial stress levels; (2) in the staged load axial stress process, the axial strain-deviatoric curves of specimens conform to the quadratic polynomial function. The axial strain-deviatoric curves of specimens conform to linear function when confining pressure is 8.6 MPa or 2.0 MPa at different axial stress levels; (3) we used the permeability damage rate and maximum permeability damage rate to evaluate the recovery degree and reduction extent of permeability; (4) we used the volume expansion ratio and the maximum volume expansion ratio to evaluate the expansion degree and increase extent of rock samples’ volume.http://dx.doi.org/10.1155/2019/1967080 |
| spellingShingle | Yushun Yang Dongming Zhang Shujian Li Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock Geofluids |
| title | Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock |
| title_full | Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock |
| title_fullStr | Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock |
| title_full_unstemmed | Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock |
| title_short | Study on Deformation and Permeation Properties of Gas-Containing Fractured Rock |
| title_sort | study on deformation and permeation properties of gas containing fractured rock |
| url | http://dx.doi.org/10.1155/2019/1967080 |
| work_keys_str_mv | AT yushunyang studyondeformationandpermeationpropertiesofgascontainingfracturedrock AT dongmingzhang studyondeformationandpermeationpropertiesofgascontainingfracturedrock AT shujianli studyondeformationandpermeationpropertiesofgascontainingfracturedrock |