Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer
This paper addresses the difficult closure of a frozen wall in a coal mine shaft due to excessive seepage velocity in an aquifer when the aquifer is penetrated via the artificial freezing method. Based on hydrothermal coupling theory and considering the effect of decreased absolute porosity on seepa...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/2307157 |
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| author | Jian Lin Hua Cheng Hai-bing Cai Bin Tang Guang-yong Cao |
| author_facet | Jian Lin Hua Cheng Hai-bing Cai Bin Tang Guang-yong Cao |
| author_sort | Jian Lin |
| collection | DOAJ |
| description | This paper addresses the difficult closure of a frozen wall in a coal mine shaft due to excessive seepage velocity in an aquifer when the aquifer is penetrated via the artificial freezing method. Based on hydrothermal coupling theory and considering the effect of decreased absolute porosity on seepage during the freezing process, a mathematical model of hydrothermal full-parameter coupling with a phase change is created. A shaft is used as a prototype, and COMSOL multiphysics finite element software is employed to perform a numerical simulation of the shaft freezing process at various stratum seepage velocities. The numerical simulation results are verified via a comparison with field measurement data. Based on the numerical simulation results, the impact of various underground water seepage velocities on the artificial frozen wall formation process with the seepage-temperature field coupling effect is analysed. Based on the analysis results, the recommended principles of the optimization design for a freezing plan are described as follows: first, the downstream area is closed to enable the water insulation effect, and second, the closure of the upstream area is expedited to reduce the total closure time of a frozen wall. |
| format | Article |
| id | doaj-art-8d6d716c76eb4f85857b1bb6369d213c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-8d6d716c76eb4f85857b1bb6369d213c2025-02-03T01:09:45ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/23071572307157Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose AquiferJian Lin0Hua Cheng1Hai-bing Cai2Bin Tang3Guang-yong Cao4School of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaDepartment of Civil Engineering, Anhui Jianzhu University, Hefei 230601, ChinaThis paper addresses the difficult closure of a frozen wall in a coal mine shaft due to excessive seepage velocity in an aquifer when the aquifer is penetrated via the artificial freezing method. Based on hydrothermal coupling theory and considering the effect of decreased absolute porosity on seepage during the freezing process, a mathematical model of hydrothermal full-parameter coupling with a phase change is created. A shaft is used as a prototype, and COMSOL multiphysics finite element software is employed to perform a numerical simulation of the shaft freezing process at various stratum seepage velocities. The numerical simulation results are verified via a comparison with field measurement data. Based on the numerical simulation results, the impact of various underground water seepage velocities on the artificial frozen wall formation process with the seepage-temperature field coupling effect is analysed. Based on the analysis results, the recommended principles of the optimization design for a freezing plan are described as follows: first, the downstream area is closed to enable the water insulation effect, and second, the closure of the upstream area is expedited to reduce the total closure time of a frozen wall.http://dx.doi.org/10.1155/2018/2307157 |
| spellingShingle | Jian Lin Hua Cheng Hai-bing Cai Bin Tang Guang-yong Cao Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer Advances in Materials Science and Engineering |
| title | Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer |
| title_full | Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer |
| title_fullStr | Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer |
| title_full_unstemmed | Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer |
| title_short | Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer |
| title_sort | effect of seepage velocity on formation of shaft frozen wall in loose aquifer |
| url | http://dx.doi.org/10.1155/2018/2307157 |
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