Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model
To accurately detect the development height of the water flowing fractured zone (WFFZ) in the overlying strata of the working face after mining under water and to ensure the safety and reliability of coal mining, the coal seam located under Weishanhu Lake in the Jisan coal mine was used as the exper...
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| Main Authors: | , , , , , , , |
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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/10.1155/2019/3161852 |
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| author | Zhijie Wen Suolin Jing Yujing Jiang Lei Tian Jinhao Wen Zhiguo Cao Shaoshuai Shi Yujun Zuo |
| author_facet | Zhijie Wen Suolin Jing Yujing Jiang Lei Tian Jinhao Wen Zhiguo Cao Shaoshuai Shi Yujun Zuo |
| author_sort | Zhijie Wen |
| collection | DOAJ |
| description | To accurately detect the development height of the water flowing fractured zone (WFFZ) in the overlying strata of the working face after mining under water and to ensure the safety and reliability of coal mining, the coal seam located under Weishanhu Lake in the Jisan coal mine was used as the experimental system. A similar laboratory simulation and water injection-based fracturing test system were used with the working face before and after mining activity to calculate, quantitatively detect, and qualitatively analyze the development height of the WFFZ in the overlying strata. Meanwhile, a flow-stress-damage model and its criterion of fracture expansion were established based on the Mohr-Coulomb criterion, and the FLAC 3D software was used to simulate the deformation and failure of the overlying strata and the evolution of WFFZ during the mining process. The results showed that the height ranges of the WFFZ beneath Weishanhu Lake of the Jisan coal mine as established by the above three methods are 30-45 m, 30-48 m, and 30-50 m. In the process of mining, the caving zone and fractured zone are, respectively, subjected to tensile failure and shear failure. The development height of the water flowing through the fractured zone in the overlying strata is basically consistent with the range of the “breaking arch.” The flow-stress-damage model and its criterion of fracture expansion can be applied to the fracture law of overlying strata under water under similar geological conditions. |
| format | Article |
| id | doaj-art-6c28f8ebb8df4b4db1711927402de2fb |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-6c28f8ebb8df4b4db1711927402de2fb2025-02-03T05:59:11ZengWileyGeofluids1468-81151468-81232019-01-01201910.1155/2019/31618523161852Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage ModelZhijie Wen0Suolin Jing1Yujing Jiang2Lei Tian3Jinhao Wen4Zhiguo Cao5Shaoshuai Shi6Yujun Zuo7State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaState Key Laboratory of Water Resource Protection and Utilization in Coal Mining, Beijing 100011, ChinaGeotechnical and Structural Engineering Research Center of Shandong University, Jinan 250061, ChinaMining College, Guizhou University, Guiyang 550003, ChinaTo accurately detect the development height of the water flowing fractured zone (WFFZ) in the overlying strata of the working face after mining under water and to ensure the safety and reliability of coal mining, the coal seam located under Weishanhu Lake in the Jisan coal mine was used as the experimental system. A similar laboratory simulation and water injection-based fracturing test system were used with the working face before and after mining activity to calculate, quantitatively detect, and qualitatively analyze the development height of the WFFZ in the overlying strata. Meanwhile, a flow-stress-damage model and its criterion of fracture expansion were established based on the Mohr-Coulomb criterion, and the FLAC 3D software was used to simulate the deformation and failure of the overlying strata and the evolution of WFFZ during the mining process. The results showed that the height ranges of the WFFZ beneath Weishanhu Lake of the Jisan coal mine as established by the above three methods are 30-45 m, 30-48 m, and 30-50 m. In the process of mining, the caving zone and fractured zone are, respectively, subjected to tensile failure and shear failure. The development height of the water flowing through the fractured zone in the overlying strata is basically consistent with the range of the “breaking arch.” The flow-stress-damage model and its criterion of fracture expansion can be applied to the fracture law of overlying strata under water under similar geological conditions.http://dx.doi.org/10.1155/2019/3161852 |
| spellingShingle | Zhijie Wen Suolin Jing Yujing Jiang Lei Tian Jinhao Wen Zhiguo Cao Shaoshuai Shi Yujun Zuo Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model Geofluids |
| title | Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model |
| title_full | Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model |
| title_fullStr | Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model |
| title_full_unstemmed | Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model |
| title_short | Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model |
| title_sort | study of the fracture law of overlying strata under water based on the flow stress damage model |
| url | http://dx.doi.org/10.1155/2019/3161852 |
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