Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast
In order to optimize the arrangement of cutting holes in tunnel blast in Dahongshan Copper Mine, theoretical analysis and numerical simulation were combined to preliminarily determine the diameter of the hollow hole and the distance between the charge hole and the hollow hole during cut blast, which...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/9080560 |
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| _version_ | 1832547602655084544 |
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| author | Xianglong Li Qiang Li Jianguo Wang Zichen Wang Hao Wang Zihao Tao |
| author_facet | Xianglong Li Qiang Li Jianguo Wang Zichen Wang Hao Wang Zihao Tao |
| author_sort | Xianglong Li |
| collection | DOAJ |
| description | In order to optimize the arrangement of cutting holes in tunnel blast in Dahongshan Copper Mine, theoretical analysis and numerical simulation were combined to preliminarily determine the diameter of the hollow hole and the distance between the charge hole and the hollow hole during cut blast, which was verified through the field blast test. The research results show that with the increase of the hole diameter, the peak compressive stress of rock surrounding the empty hole gradually decreases, and the peak tensile stress gradually increases, which is consistent with the calculation results; when the hole diameter is 10 cm, the two first blast holes are arranged horizontally and 30 cm from the empty hole, two second blast holes are arranged vertically and 40 cm away from the empty hole, and the four third blast holes are arranged at a horizontal distance of 45 cm and a vertical distance of 45 cm from the empty hole; the contour area in numerical simulation is the maximum. The difference in contour area, contour width, and contour and contour height between the measured value and the simulation result is 5.3%, 3.3%, and 3.4%, respectively, indicating that the combination of theoretical calculation and numerical simulation is suitable for prediction of cavity section after blast in tunnel excavation. |
| format | Article |
| id | doaj-art-cfb304e3674740e482a3283b0106e19a |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-cfb304e3674740e482a3283b0106e19a2025-02-03T06:44:02ZengWileyGeofluids1468-81232021-01-01202110.1155/2021/9080560Influence of Hole Arrangement on the Section of Cavity Formed by Cutting BlastXianglong Li0Qiang Li1Jianguo Wang2Zichen Wang3Hao Wang4Zihao Tao5Faculty of Land Resources EngineeringFaculty of Land Resources EngineeringFaculty of Land Resources EngineeringXi’an Research Institute of China Coal Technology Group Co.State Key Laboratory of Reservoir Geology and Development EngineeringFaculty of Land Resources EngineeringIn order to optimize the arrangement of cutting holes in tunnel blast in Dahongshan Copper Mine, theoretical analysis and numerical simulation were combined to preliminarily determine the diameter of the hollow hole and the distance between the charge hole and the hollow hole during cut blast, which was verified through the field blast test. The research results show that with the increase of the hole diameter, the peak compressive stress of rock surrounding the empty hole gradually decreases, and the peak tensile stress gradually increases, which is consistent with the calculation results; when the hole diameter is 10 cm, the two first blast holes are arranged horizontally and 30 cm from the empty hole, two second blast holes are arranged vertically and 40 cm away from the empty hole, and the four third blast holes are arranged at a horizontal distance of 45 cm and a vertical distance of 45 cm from the empty hole; the contour area in numerical simulation is the maximum. The difference in contour area, contour width, and contour and contour height between the measured value and the simulation result is 5.3%, 3.3%, and 3.4%, respectively, indicating that the combination of theoretical calculation and numerical simulation is suitable for prediction of cavity section after blast in tunnel excavation.http://dx.doi.org/10.1155/2021/9080560 |
| spellingShingle | Xianglong Li Qiang Li Jianguo Wang Zichen Wang Hao Wang Zihao Tao Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast Geofluids |
| title | Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast |
| title_full | Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast |
| title_fullStr | Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast |
| title_full_unstemmed | Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast |
| title_short | Influence of Hole Arrangement on the Section of Cavity Formed by Cutting Blast |
| title_sort | influence of hole arrangement on the section of cavity formed by cutting blast |
| url | http://dx.doi.org/10.1155/2021/9080560 |
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