Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study
An insignificant number of studies have focused on employing penetration using mini-linear shaped charge jets for directionally controlled splitting of massive rocks. In this study, we adopt a numerical calculation method to simulate the penetration and formation of the main splitting surface of a c...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/2039225 |
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| _version_ | 1832565471051776000 |
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| author | Zhenyang Xu Xin Liu Hongyi Mo Lianjun Guo Jun Yang |
| author_facet | Zhenyang Xu Xin Liu Hongyi Mo Lianjun Guo Jun Yang |
| author_sort | Zhenyang Xu |
| collection | DOAJ |
| description | An insignificant number of studies have focused on employing penetration using mini-linear shaped charge jets for directionally controlled splitting of massive rocks. In this study, we adopt a numerical calculation method to simulate the penetration and formation of the main splitting surface of a concrete specimen, considering a wedge angle of 45° in both processes. The surface on the principal axial plane is found to split first due to linear jet penetration. In the case of single primary-plane splitting, cracks appear at both ends of the long axis of the penetration crack and the splitting surface extends diagonally from the center of the penetration. A transverse crack separates the splitting surface and the radial-fracture surface, and the degree of fracture decreases along the direction of the height of the specimen. Finally, a realistic physical model demonstrating penetration using a mini-linearshaped charge jet is established. It is a rapid and safe blasting technology to handle hazardous massive rocks during emergency rescuing or mining. |
| format | Article |
| id | doaj-art-c1c407b5a6504bdea3cc8c45063db2ec |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-c1c407b5a6504bdea3cc8c45063db2ec2025-02-03T01:07:46ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/2039225Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case StudyZhenyang Xu0Xin Liu1Hongyi Mo2Lianjun Guo3Jun Yang4School of Mining EngineeringSchool of Mining EngineeringSchool of Mining EngineeringSchool of Architecture and Civil EngineeringState Key Laboratory of Explosion Science and TechnologyAn insignificant number of studies have focused on employing penetration using mini-linear shaped charge jets for directionally controlled splitting of massive rocks. In this study, we adopt a numerical calculation method to simulate the penetration and formation of the main splitting surface of a concrete specimen, considering a wedge angle of 45° in both processes. The surface on the principal axial plane is found to split first due to linear jet penetration. In the case of single primary-plane splitting, cracks appear at both ends of the long axis of the penetration crack and the splitting surface extends diagonally from the center of the penetration. A transverse crack separates the splitting surface and the radial-fracture surface, and the degree of fracture decreases along the direction of the height of the specimen. Finally, a realistic physical model demonstrating penetration using a mini-linearshaped charge jet is established. It is a rapid and safe blasting technology to handle hazardous massive rocks during emergency rescuing or mining.http://dx.doi.org/10.1155/2022/2039225 |
| spellingShingle | Zhenyang Xu Xin Liu Hongyi Mo Lianjun Guo Jun Yang Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study Advances in Civil Engineering |
| title | Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study |
| title_full | Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study |
| title_fullStr | Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study |
| title_full_unstemmed | Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study |
| title_short | Rock Dynamic Fracture Characteristics by Mini-Linear Shaped Charge Jet Penetration: A Case Study |
| title_sort | rock dynamic fracture characteristics by mini linear shaped charge jet penetration a case study |
| url | http://dx.doi.org/10.1155/2022/2039225 |
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