Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting
Based on LS-DYNA numerical simulation analysis and comparison with laboratory tests, the blasting crack development dynamic evolution mechanism of elliptical bipolar linear shaped charge is analyzed. The development law of rock crack and optimal radial decoupling coefficient under different blast ho...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5272878 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832549147199143936 |
|---|---|
| author | Bo Wu Shixiang Xu Guowang Meng Junhua Cai Han Wei Hualong Li Jinglong Zhang |
| author_facet | Bo Wu Shixiang Xu Guowang Meng Junhua Cai Han Wei Hualong Li Jinglong Zhang |
| author_sort | Bo Wu |
| collection | DOAJ |
| description | Based on LS-DYNA numerical simulation analysis and comparison with laboratory tests, the blasting crack development dynamic evolution mechanism of elliptical bipolar linear shaped charge is analyzed. The development law of rock crack and optimal radial decoupling coefficient under different blast hole diameters were studied. The results revealed that the blasting with elliptical bipolar linear shaped charge had a remarkable effect on the directional crack formation, and the maximum effective stress of rock close to the position of shaped charge in the direction of concentrating energy is about 2.3 times of that in the direction of nonconcentrated energy. Moreover, the directional crack could be formed by blasting with elliptical bipolar linear shaped charge with different hole diameters, whilst the length of the main crack was related to the radial decoupling coefficient. Particularly, the main crack reached the longest when the radial decoupling coefficient was 3.36. |
| format | Article |
| id | doaj-art-1b6e5ab068e34ab3922b604dd0f175af |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-1b6e5ab068e34ab3922b604dd0f175af2025-02-03T06:12:06ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/52728785272878Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge BlastingBo Wu0Shixiang Xu1Guowang Meng2Junhua Cai3Han Wei4Hualong Li5Jinglong Zhang6College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaSanming Puyan Expressway Co. Ltd., Sanming, Fujian 365000, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaCollege of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, ChinaBased on LS-DYNA numerical simulation analysis and comparison with laboratory tests, the blasting crack development dynamic evolution mechanism of elliptical bipolar linear shaped charge is analyzed. The development law of rock crack and optimal radial decoupling coefficient under different blast hole diameters were studied. The results revealed that the blasting with elliptical bipolar linear shaped charge had a remarkable effect on the directional crack formation, and the maximum effective stress of rock close to the position of shaped charge in the direction of concentrating energy is about 2.3 times of that in the direction of nonconcentrated energy. Moreover, the directional crack could be formed by blasting with elliptical bipolar linear shaped charge with different hole diameters, whilst the length of the main crack was related to the radial decoupling coefficient. Particularly, the main crack reached the longest when the radial decoupling coefficient was 3.36.http://dx.doi.org/10.1155/2021/5272878 |
| spellingShingle | Bo Wu Shixiang Xu Guowang Meng Junhua Cai Han Wei Hualong Li Jinglong Zhang Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting Shock and Vibration |
| title | Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting |
| title_full | Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting |
| title_fullStr | Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting |
| title_full_unstemmed | Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting |
| title_short | Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting |
| title_sort | study on dynamic evolution law of blasting cracks in elliptical bipolar linear shaped charge blasting |
| url | http://dx.doi.org/10.1155/2021/5272878 |
| work_keys_str_mv | AT bowu studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT shixiangxu studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT guowangmeng studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT junhuacai studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT hanwei studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT hualongli studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting AT jinglongzhang studyondynamicevolutionlawofblastingcracksinellipticalbipolarlinearshapedchargeblasting |