The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention
The mechanism of preventing rockburst through deep-hole precracking blasting was studied based on experimental test, numerical simulation, and field testing. The study results indicate that the deep-hole precracking could change the bursting proneness and stress state of coal-rock mass, thereby prev...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/625691 |
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| _version_ | 1832559396597530624 |
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| author | Zhenhua Ouyang Qingxin Qi Shankun Zhao Baoyang Wu Ningbo Zhang |
| author_facet | Zhenhua Ouyang Qingxin Qi Shankun Zhao Baoyang Wu Ningbo Zhang |
| author_sort | Zhenhua Ouyang |
| collection | DOAJ |
| description | The mechanism of preventing rockburst through deep-hole precracking blasting was studied based on experimental test, numerical simulation, and field testing. The study results indicate that the deep-hole precracking could change the bursting proneness and stress state of coal-rock mass, thereby preventing the occurrence of rockburst. The bursting proneness of the whole composite structure could be weakened by the deep-hole precracking blasting. The change of stress state in the process of precracking blasting is achieved in two ways: (1) artificially break the roof apart, thus weakening the continuity of the roof strata, effectively inducing the roof caving while reducing its impact strength; and (2) the dynamic shattering and air pressure generated by the blasting can structurally change the properties of the coal-rock mass by mitigating the high stress generation and high elastic energy accumulation, thus breaking the conditions of energy transfer and rock burst occurrence. |
| format | Article |
| id | doaj-art-13d798fd7da34c68ac7b24d0089289ed |
| 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-13d798fd7da34c68ac7b24d0089289ed2025-02-03T01:30:07ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/625691625691The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst PreventionZhenhua Ouyang0Qingxin Qi1Shankun Zhao2Baoyang Wu3Ningbo Zhang4China Coal Research Institute, Beijing 100013, ChinaChina Coal Research Institute, Beijing 100013, ChinaChina Coal Research Institute, Beijing 100013, ChinaChina Coal Research Institute, Beijing 100013, ChinaChina Coal Research Institute, Beijing 100013, ChinaThe mechanism of preventing rockburst through deep-hole precracking blasting was studied based on experimental test, numerical simulation, and field testing. The study results indicate that the deep-hole precracking could change the bursting proneness and stress state of coal-rock mass, thereby preventing the occurrence of rockburst. The bursting proneness of the whole composite structure could be weakened by the deep-hole precracking blasting. The change of stress state in the process of precracking blasting is achieved in two ways: (1) artificially break the roof apart, thus weakening the continuity of the roof strata, effectively inducing the roof caving while reducing its impact strength; and (2) the dynamic shattering and air pressure generated by the blasting can structurally change the properties of the coal-rock mass by mitigating the high stress generation and high elastic energy accumulation, thus breaking the conditions of energy transfer and rock burst occurrence.http://dx.doi.org/10.1155/2015/625691 |
| spellingShingle | Zhenhua Ouyang Qingxin Qi Shankun Zhao Baoyang Wu Ningbo Zhang The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention Shock and Vibration |
| title | The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention |
| title_full | The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention |
| title_fullStr | The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention |
| title_full_unstemmed | The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention |
| title_short | The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention |
| title_sort | mechanism and application of deep hole precracking blasting on rockburst prevention |
| url | http://dx.doi.org/10.1155/2015/625691 |
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