A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams
Shallow depth coal seams are widely spread in Shendong mining area, which is located in the Northwestern region of China. When working face is advanced out of concentrated coal pillar in upper room and pillar goaf, strong strata behaviors often cause support crushing accidents, and potentially induc...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/709459 |
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| author | Like Wei Qingxin Qi Hongyan Li Bin Zhang Yongren Wang Linghai Kong |
| author_facet | Like Wei Qingxin Qi Hongyan Li Bin Zhang Yongren Wang Linghai Kong |
| author_sort | Like Wei |
| collection | DOAJ |
| description | Shallow depth coal seams are widely spread in Shendong mining area, which is located in the Northwestern region of China. When working face is advanced out of concentrated coal pillar in upper room and pillar goaf, strong strata behaviors often cause support crushing accidents, and potentially induce large area residual pillars instability and even wind blast disaster. In order to predict the precise time when the accident happens, guaranteeing life-safety of miner, microseismic monitoring system was for the first time applied in shallow coal seam. Based on damage mechanics correlation theory, the damage energy model is established to describe relationship between damage level and cumulative energy of microseismic events. According to microseismic monitoring data of two support crushing accidents, the damage energy model is verified and an effective early warning method of these accidents is proposed. The field application showed that the early warning method had avoided miners suffering from all support crushing accidents in Shigetai coal mine. |
| format | Article |
| id | doaj-art-a413fc313881457188213c9bb095cee9 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-a413fc313881457188213c9bb095cee92025-02-03T01:10:29ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/709459709459A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth SeamsLike Wei0Qingxin Qi1Hongyan Li2Bin Zhang3Yongren Wang4Linghai Kong5China Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaChina Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaChina Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaChina Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaChina Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaChina Coal Research Institute, Mine Safety Technology Branch, No. 5 Qingniangou Road, Chaoyang District, Beijing 100013, ChinaShallow depth coal seams are widely spread in Shendong mining area, which is located in the Northwestern region of China. When working face is advanced out of concentrated coal pillar in upper room and pillar goaf, strong strata behaviors often cause support crushing accidents, and potentially induce large area residual pillars instability and even wind blast disaster. In order to predict the precise time when the accident happens, guaranteeing life-safety of miner, microseismic monitoring system was for the first time applied in shallow coal seam. Based on damage mechanics correlation theory, the damage energy model is established to describe relationship between damage level and cumulative energy of microseismic events. According to microseismic monitoring data of two support crushing accidents, the damage energy model is verified and an effective early warning method of these accidents is proposed. The field application showed that the early warning method had avoided miners suffering from all support crushing accidents in Shigetai coal mine.http://dx.doi.org/10.1155/2015/709459 |
| spellingShingle | Like Wei Qingxin Qi Hongyan Li Bin Zhang Yongren Wang Linghai Kong A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams Shock and Vibration |
| title | A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams |
| title_full | A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams |
| title_fullStr | A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams |
| title_full_unstemmed | A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams |
| title_short | A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams |
| title_sort | case study of damage energy analysis and an early warning by microseismic monitoring for large area roof caving in shallow depth seams |
| url | http://dx.doi.org/10.1155/2015/709459 |
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