Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone
The mudstone interlayer experiences discontinuous cyclic loading during gas storage reservoir operation. To investigate the effects of intermittent action and confining pressure on the fatigue mechanical properties of mudstone. Continuous fatigue test and graded intermittent fatigue test were conduc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01021.pdf |
| _version_ | 1827371890781454336 |
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| author | Zhang Yuhao Ren Lachun Yao Peng Jiang Deyi |
| author_facet | Zhang Yuhao Ren Lachun Yao Peng Jiang Deyi |
| author_sort | Zhang Yuhao |
| collection | DOAJ |
| description | The mudstone interlayer experiences discontinuous cyclic loading during gas storage reservoir operation. To investigate the effects of intermittent action and confining pressure on the fatigue mechanical properties of mudstone. Continuous fatigue test and graded intermittent fatigue test were conducted respectively. The results show that: 1. the fatigue life of mudstone is enhanced by the intermittent effect during the fatigue process. The presence of confining pressure under the same experimental conditions also benefits the fatigue life of mudstone.2. the average modulus of elasticity of mudstone decreases with increasing stress level during cyclic loading, and both intermittency and confining pressure help to enhance the modulus of elasticity of mudstone.3. in graded intermittent fatigue tests. In both uniaxial and triaxial tests, the residual strains generated by the post-interval cycles are smaller than those generated before the intervals.4. In the 3MPa graded interval fatigue test, negative deformation occurs in the post-interval cycle due to the release of elastic energy. |
| first_indexed | 2024-03-08T10:48:19Z |
| format | Article |
| id | doaj.art-5c4e88d1ab8b4de99274f799e5d427d3 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-08T10:48:19Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-5c4e88d1ab8b4de99274f799e5d427d32024-01-26T16:52:34ZengEDP SciencesE3S Web of Conferences2267-12422024-01-014780102110.1051/e3sconf/202447801021e3sconf_gesd2024_01021Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstoneZhang Yuhao0Ren Lachun1Yao Peng2Jiang Deyi3Powerchina Urban Planning and Design Institute Co. Ltd.Powerchina Urban Planning and Design Institute Co. Ltd.Powerchina Urban Planning and Design Institute Co. Ltd.School of Resources and Safety EngineeringThe mudstone interlayer experiences discontinuous cyclic loading during gas storage reservoir operation. To investigate the effects of intermittent action and confining pressure on the fatigue mechanical properties of mudstone. Continuous fatigue test and graded intermittent fatigue test were conducted respectively. The results show that: 1. the fatigue life of mudstone is enhanced by the intermittent effect during the fatigue process. The presence of confining pressure under the same experimental conditions also benefits the fatigue life of mudstone.2. the average modulus of elasticity of mudstone decreases with increasing stress level during cyclic loading, and both intermittency and confining pressure help to enhance the modulus of elasticity of mudstone.3. in graded intermittent fatigue tests. In both uniaxial and triaxial tests, the residual strains generated by the post-interval cycles are smaller than those generated before the intervals.4. In the 3MPa graded interval fatigue test, negative deformation occurs in the post-interval cycle due to the release of elastic energy.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01021.pdf |
| spellingShingle | Zhang Yuhao Ren Lachun Yao Peng Jiang Deyi Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone E3S Web of Conferences |
| title | Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| title_full | Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| title_fullStr | Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| title_full_unstemmed | Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| title_short | Experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| title_sort | experimental study on the effect of confining pressure and interval time on the fatigue mechanical properties of mudstone |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01021.pdf |
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