Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body
In the process of continuous and high-intensity mining in soft rock coal mines, high-quality filling treatment is required for the goaf. A nondestructive acoustic velocimetry method is an excellent way to measure the quality of filling body to effectively maintain the rock stability of the mining ar...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2023/4904326 |
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| _version_ | 1849685773915258880 |
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| author | Daiqiang Deng Jinkuan Fan Guodong Cao Yihua Liang Runze Wang Yu Gao Yunfan Ma |
| author_facet | Daiqiang Deng Jinkuan Fan Guodong Cao Yihua Liang Runze Wang Yu Gao Yunfan Ma |
| author_sort | Daiqiang Deng |
| collection | DOAJ |
| description | In the process of continuous and high-intensity mining in soft rock coal mines, high-quality filling treatment is required for the goaf. A nondestructive acoustic velocimetry method is an excellent way to measure the quality of filling body to effectively maintain the rock stability of the mining area and decrease industrial solid waste. In this study, the gangue and fine sand are used as the filling aggregates, and the uniaxial compression test and acoustic wave test are conducted in the cementitious gangue-sand filling body with different gangue-sand ratio. The results show that the longitudinal wave velocity of the filling body is basically between 1.556 km/s and 2.413 km/s. When the gangue-sand ratio is small, and the slurry concentration is high, the early strength of the cementitious gangue-sand filling body is low, but the later strength has a good growth trend. For specimens with higher strength-filled bodies, the propagation speed of sound waves inside them is also faster, indicating a certain positive correlation between the strength of the filled body and the speed of sound waves. A mathematical equation using longitudinal wave velocity to predict the strength of filling body is established. This equation can be used to predict and judge the quality of the filling body in the mining area. |
| format | Article |
| id | doaj-art-c6fa8db98dec4fd2b1736ca63b12b34e |
| institution | DOAJ |
| issn | 1875-9203 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c6fa8db98dec4fd2b1736ca63b12b34e2025-08-20T03:22:58ZengWileyShock and Vibration1875-92032023-01-01202310.1155/2023/4904326Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling BodyDaiqiang Deng0Jinkuan Fan1Guodong Cao2Yihua Liang3Runze Wang4Yu Gao5Yunfan Ma6College of Civil EngineeringCollege of Civil EngineeringCollege of Civil EngineeringIndustrial Development Research Center of GuizhouCollege of Civil EngineeringCollege of Civil EngineeringCollege of Civil EngineeringIn the process of continuous and high-intensity mining in soft rock coal mines, high-quality filling treatment is required for the goaf. A nondestructive acoustic velocimetry method is an excellent way to measure the quality of filling body to effectively maintain the rock stability of the mining area and decrease industrial solid waste. In this study, the gangue and fine sand are used as the filling aggregates, and the uniaxial compression test and acoustic wave test are conducted in the cementitious gangue-sand filling body with different gangue-sand ratio. The results show that the longitudinal wave velocity of the filling body is basically between 1.556 km/s and 2.413 km/s. When the gangue-sand ratio is small, and the slurry concentration is high, the early strength of the cementitious gangue-sand filling body is low, but the later strength has a good growth trend. For specimens with higher strength-filled bodies, the propagation speed of sound waves inside them is also faster, indicating a certain positive correlation between the strength of the filled body and the speed of sound waves. A mathematical equation using longitudinal wave velocity to predict the strength of filling body is established. This equation can be used to predict and judge the quality of the filling body in the mining area.http://dx.doi.org/10.1155/2023/4904326 |
| spellingShingle | Daiqiang Deng Jinkuan Fan Guodong Cao Yihua Liang Runze Wang Yu Gao Yunfan Ma Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body Shock and Vibration |
| title | Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body |
| title_full | Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body |
| title_fullStr | Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body |
| title_full_unstemmed | Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body |
| title_short | Study on Sound Propagation Performance of Mechanized Coal Gangue-Fine Sand Filling Body |
| title_sort | study on sound propagation performance of mechanized coal gangue fine sand filling body |
| url | http://dx.doi.org/10.1155/2023/4904326 |
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