Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling
To analyze the internal pore evolution law of aquifer rock in a coal mining front under the coupling effect of stress and seepage and the influence on the water inrush performance of the working face, research on the working face was conducted to improve the RTR-1000 high-temperature and high-pressu...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8861969 |
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| author | Dongdong Pang Feisheng Feng Guanghui Jiang Dongjing Xu Xiaohan Wang |
| author_facet | Dongdong Pang Feisheng Feng Guanghui Jiang Dongjing Xu Xiaohan Wang |
| author_sort | Dongdong Pang |
| collection | DOAJ |
| description | To analyze the internal pore evolution law of aquifer rock in a coal mining front under the coupling effect of stress and seepage and the influence on the water inrush performance of the working face, research on the working face was conducted to improve the RTR-1000 high-temperature and high-pressure rock triaxial mechanical testing system, using hollow cylindrical and complete sandstone samples and by considering the stress change law in the actual mining process as the reference loading path. At the initial stage of loading, the permeability of sandstone demonstrates a rapid downward trend within a small range of stress change, with a decline rate of 50%. At lower permeabilities, the fluctuation is small; the plastic and failure stages are transient, and the relationship curve between the horizontal permeability and the axial confining pressure of sandstone is divided into compaction, multiple fluctuations, surrender, and failure. In several stages, the sandstone lateral permeability experiment under the coupling effect of stress and seepage demonstrates that the permeability of the aquifer in the coal mining front is significantly reduced after the original rock stress is disturbed by mining, suggesting that the water inrush calculation of the traditional water-flowing fractured zone and caving zone aquifer rock permeability experiment is inaccurate. Further research can deepen the stress and seepage coupling evolution process under the action of working face water inrush. |
| format | Article |
| id | doaj-art-90016c4de369417e9e436ee1b50fb792 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-90016c4de369417e9e436ee1b50fb7922025-02-03T06:43:36ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88619698861969Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage CouplingDongdong Pang0Feisheng Feng1Guanghui Jiang2Dongjing Xu3Xiaohan Wang4State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering, Ludong University, Yantai 264025, ChinaShandong Prov Key Lab Deposit Mineralizat & Sedim, Shandong University of Science and Technology, Qingdao 266590, Shandong, ChinaSchool of Mining and Safety Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaTo analyze the internal pore evolution law of aquifer rock in a coal mining front under the coupling effect of stress and seepage and the influence on the water inrush performance of the working face, research on the working face was conducted to improve the RTR-1000 high-temperature and high-pressure rock triaxial mechanical testing system, using hollow cylindrical and complete sandstone samples and by considering the stress change law in the actual mining process as the reference loading path. At the initial stage of loading, the permeability of sandstone demonstrates a rapid downward trend within a small range of stress change, with a decline rate of 50%. At lower permeabilities, the fluctuation is small; the plastic and failure stages are transient, and the relationship curve between the horizontal permeability and the axial confining pressure of sandstone is divided into compaction, multiple fluctuations, surrender, and failure. In several stages, the sandstone lateral permeability experiment under the coupling effect of stress and seepage demonstrates that the permeability of the aquifer in the coal mining front is significantly reduced after the original rock stress is disturbed by mining, suggesting that the water inrush calculation of the traditional water-flowing fractured zone and caving zone aquifer rock permeability experiment is inaccurate. Further research can deepen the stress and seepage coupling evolution process under the action of working face water inrush.http://dx.doi.org/10.1155/2020/8861969 |
| spellingShingle | Dongdong Pang Feisheng Feng Guanghui Jiang Dongjing Xu Xiaohan Wang Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling Advances in Civil Engineering |
| title | Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling |
| title_full | Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling |
| title_fullStr | Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling |
| title_full_unstemmed | Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling |
| title_short | Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling |
| title_sort | experimental study on lateral permeability evolution of sandstone under seepage damage coupling |
| url | http://dx.doi.org/10.1155/2020/8861969 |
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