Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining
The practice shows that deep strip mining induces rockburst disaster easily. Accurately evaluating rockburst risk of the strip coal pillar is of great significance for ensuring the safety of deep strip mining. In this paper, the catastrophe mechanics model was used to analyze the abrupt instability...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8824323 |
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| author | Bangyou Jiang Hongguang Ji Long Fu Shitan Gu Tong Zou Jiaxin Lu |
| author_facet | Bangyou Jiang Hongguang Ji Long Fu Shitan Gu Tong Zou Jiaxin Lu |
| author_sort | Bangyou Jiang |
| collection | DOAJ |
| description | The practice shows that deep strip mining induces rockburst disaster easily. Accurately evaluating rockburst risk of the strip coal pillar is of great significance for ensuring the safety of deep strip mining. In this paper, the catastrophe mechanics model was used to analyze the abrupt instability condition of strip coal pillar. And the three indicators that are the medium stiffness ratio (k) of the elastic and plastic zone in the coal pillar, the plastic zone width ratio (aY), and the elastic deformation index (Uq) of core zone were put forward with considering the geometry size of coal pillar. Based on the 3202 panel of Gucheng Coal Mine, the evolution characteristics of rockburst risk of coal pillar under different mining widths and coal pillar widths were studied by numerical simulation. The evaluation result shows that the strip coal pillar of the 3202 panel is in danger of strong rockburst, which is more in line with the actual situation than the results of the traditional rockburst tendency identification test and comprehensive index method. These three indicators can be regarded as important indicators to evaluate the rockburst risk in the strip mining engineering field. Based on that, the design principle of strip mining in Gucheng Coal Mine was put forward, which is considered an important reference for similar cases. |
| format | Article |
| id | doaj-art-91d298c3e82d471fae8bfbf67f6b6414 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-91d298c3e82d471fae8bfbf67f6b64142025-08-20T03:37:07ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88243238824323Research on Evaluation Index and Application of Rockburst Risk in Deep Strip MiningBangyou Jiang0Hongguang Ji1Long Fu2Shitan Gu3Tong Zou4Jiaxin Lu5State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Photovoltaics Engineering, Shandong Polytechnic College, Jining 272067, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the 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 the 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 the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaThe practice shows that deep strip mining induces rockburst disaster easily. Accurately evaluating rockburst risk of the strip coal pillar is of great significance for ensuring the safety of deep strip mining. In this paper, the catastrophe mechanics model was used to analyze the abrupt instability condition of strip coal pillar. And the three indicators that are the medium stiffness ratio (k) of the elastic and plastic zone in the coal pillar, the plastic zone width ratio (aY), and the elastic deformation index (Uq) of core zone were put forward with considering the geometry size of coal pillar. Based on the 3202 panel of Gucheng Coal Mine, the evolution characteristics of rockburst risk of coal pillar under different mining widths and coal pillar widths were studied by numerical simulation. The evaluation result shows that the strip coal pillar of the 3202 panel is in danger of strong rockburst, which is more in line with the actual situation than the results of the traditional rockburst tendency identification test and comprehensive index method. These three indicators can be regarded as important indicators to evaluate the rockburst risk in the strip mining engineering field. Based on that, the design principle of strip mining in Gucheng Coal Mine was put forward, which is considered an important reference for similar cases.http://dx.doi.org/10.1155/2020/8824323 |
| spellingShingle | Bangyou Jiang Hongguang Ji Long Fu Shitan Gu Tong Zou Jiaxin Lu Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining Shock and Vibration |
| title | Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining |
| title_full | Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining |
| title_fullStr | Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining |
| title_full_unstemmed | Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining |
| title_short | Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining |
| title_sort | research on evaluation index and application of rockburst risk in deep strip mining |
| url | http://dx.doi.org/10.1155/2020/8824323 |
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