Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm
Slotting-blasting is the most critical technology in the construction of rock tunnels using the drilling and blasting method. At present, there is no effective method to simulate the effect of slotting-blasting. In this paper, we proposed that the weight coefficient of tension damage or compression...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/13/6714 |
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| author | Jiancong Xu Zelong Wang Guorong Rui |
| author_facet | Jiancong Xu Zelong Wang Guorong Rui |
| author_sort | Jiancong Xu |
| collection | DOAJ |
| description | Slotting-blasting is the most critical technology in the construction of rock tunnels using the drilling and blasting method. At present, there is no effective method to simulate the effect of slotting-blasting. In this paper, we proposed that the weight coefficient of tension damage or compression damage is calculated by the proportion relation of current principal stresses, and the damage properties of rock were denoted by the tension-compression weighted damage variable. The blasting damage constitutive model of rock was established by coupling the tension-compression weighted damage variable and the classical PLASTIC_KINEMATIC model. The proposed method was used to simulate tunnel slotting-blasting and investigate the rock damage evolution law in slotting-blasting construction. The numerical simulation of the explosive blasting test shows that the proposed method may effectively simulate the slot cavity formation process, the blasting damage law and the dynamic response characteristics of surrounding rock in slotting-blasting construction. The findings in this paper could be significant for the slotting-blasting design of rock tunnels. |
| first_indexed | 2024-03-09T22:05:46Z |
| format | Article |
| id | doaj.art-989865800e2a4afbaaec32c6a2f10d2b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T22:05:46Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-989865800e2a4afbaaec32c6a2f10d2b2023-11-23T19:41:28ZengMDPI AGApplied Sciences2076-34172022-07-011213671410.3390/app12136714Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage AlgorithmJiancong Xu0Zelong Wang1Guorong Rui2Department of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaChina Railway 20th Bureau Group Co., Ltd., Xi’an 710016, ChinaSlotting-blasting is the most critical technology in the construction of rock tunnels using the drilling and blasting method. At present, there is no effective method to simulate the effect of slotting-blasting. In this paper, we proposed that the weight coefficient of tension damage or compression damage is calculated by the proportion relation of current principal stresses, and the damage properties of rock were denoted by the tension-compression weighted damage variable. The blasting damage constitutive model of rock was established by coupling the tension-compression weighted damage variable and the classical PLASTIC_KINEMATIC model. The proposed method was used to simulate tunnel slotting-blasting and investigate the rock damage evolution law in slotting-blasting construction. The numerical simulation of the explosive blasting test shows that the proposed method may effectively simulate the slot cavity formation process, the blasting damage law and the dynamic response characteristics of surrounding rock in slotting-blasting construction. The findings in this paper could be significant for the slotting-blasting design of rock tunnels.https://www.mdpi.com/2076-3417/12/13/6714rock tunnelblastingslotting-blastingnumerical modeling |
| spellingShingle | Jiancong Xu Zelong Wang Guorong Rui Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm Applied Sciences rock tunnel blasting slotting-blasting numerical modeling |
| title | Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm |
| title_full | Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm |
| title_fullStr | Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm |
| title_full_unstemmed | Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm |
| title_short | Tunnel Slotting-Blasting Numerical Modeling Using Rock Tension-Compression Coupling Damage Algorithm |
| title_sort | tunnel slotting blasting numerical modeling using rock tension compression coupling damage algorithm |
| topic | rock tunnel blasting slotting-blasting numerical modeling |
| url | https://www.mdpi.com/2076-3417/12/13/6714 |
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