Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting
To investigate the effect of an adjacent hole on the blast-induced stress concentration in rock blasting, a rock blasting model with an adjacent hole is explored through theoretical analysis and numerical simulation. The commercial software LS-DYNA is utilized to simulate adjacent hole effect in roc...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5172878 |
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| author | Yuezong Yang Zhushan Shao Junfeng Mi Xiaofeng Xiong |
| author_facet | Yuezong Yang Zhushan Shao Junfeng Mi Xiaofeng Xiong |
| author_sort | Yuezong Yang |
| collection | DOAJ |
| description | To investigate the effect of an adjacent hole on the blast-induced stress concentration in rock blasting, a rock blasting model with an adjacent hole is explored through theoretical analysis and numerical simulation. The commercial software LS-DYNA is utilized to simulate adjacent hole effect in rock blasting, in which the Johnson–Holmquist concrete material model is used to simulate rock and the high-explosive-burn-explosive and the equation of state of JWL are used to simulate explosive. Influences of the key parameters of adjacent hole effect in rock blasting, pitch of holes, adjacent hole diameter, and uncoupled medium in a blasting hole are extensively explored. According to the simulation results, when the explosion stress wave spreads to the adjacent hole wall, the tangential stress on the adjacent hole wall induced by the explosion stress wave is always greater than the radial stress. Adjacent hole diameter has a major effect on stress concentration, but with the adjacent hole diameter increasing, the stress concentration phenomenon weakens and the free surface effect of the adjacent hole plays a more important role. |
| format | Article |
| id | doaj-art-31541c15365f443e8a9704983de70cdb |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-31541c15365f443e8a9704983de70cdb2025-02-03T01:22:07ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/51728785172878Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock BlastingYuezong Yang0Zhushan Shao1Junfeng Mi2Xiaofeng Xiong3School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaThe 1st Engineering Co., Ltd. of China Railway 12th Bureau Group, Xi’an 710038, ChinaThe 1st Engineering Co., Ltd. of China Railway 12th Bureau Group, Xi’an 710038, ChinaTo investigate the effect of an adjacent hole on the blast-induced stress concentration in rock blasting, a rock blasting model with an adjacent hole is explored through theoretical analysis and numerical simulation. The commercial software LS-DYNA is utilized to simulate adjacent hole effect in rock blasting, in which the Johnson–Holmquist concrete material model is used to simulate rock and the high-explosive-burn-explosive and the equation of state of JWL are used to simulate explosive. Influences of the key parameters of adjacent hole effect in rock blasting, pitch of holes, adjacent hole diameter, and uncoupled medium in a blasting hole are extensively explored. According to the simulation results, when the explosion stress wave spreads to the adjacent hole wall, the tangential stress on the adjacent hole wall induced by the explosion stress wave is always greater than the radial stress. Adjacent hole diameter has a major effect on stress concentration, but with the adjacent hole diameter increasing, the stress concentration phenomenon weakens and the free surface effect of the adjacent hole plays a more important role.http://dx.doi.org/10.1155/2018/5172878 |
| spellingShingle | Yuezong Yang Zhushan Shao Junfeng Mi Xiaofeng Xiong Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting Advances in Civil Engineering |
| title | Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting |
| title_full | Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting |
| title_fullStr | Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting |
| title_full_unstemmed | Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting |
| title_short | Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting |
| title_sort | effect of adjacent hole on the blast induced stress concentration in rock blasting |
| url | http://dx.doi.org/10.1155/2018/5172878 |
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