A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels
The natural caving method, as a new technique in underground mining, has been promoted and applied in several countries worldwide. The destruction of the bottom rock mass structure directly impacts the structural stability of underground engineering, resulting in damage and collapse of underground t...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/14/22/10651 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846154423824285696 |
|---|---|
| author | Zhengrong Li Zhiming Cheng Yulian Shi Yongjie Li Yonghui Huang Zhiyu Zhang |
| author_facet | Zhengrong Li Zhiming Cheng Yulian Shi Yongjie Li Yonghui Huang Zhiyu Zhang |
| author_sort | Zhengrong Li |
| collection | DOAJ |
| description | The natural caving method, as a new technique in underground mining, has been promoted and applied in several countries worldwide. The destruction of the bottom rock mass structure directly impacts the structural stability of underground engineering, resulting in damage and collapse of underground tunnels. Therefore, based on the principles of explosion theory and field monitoring data, a scaled three-dimensional numerical simulation model of underground blasting was constructed using LS-DYNA19.0 software to investigate the attenuation patterns of underground blasting vibrations and their impact on nearby tunnels. The results show that the relative error range between the simulated blasting vibration velocities based on the FEM-SPH (Finite Element Method–Smoothed Particle Hydrodynamics) algorithm and the measured values is between 7.75% and 9.85%, validating the feasibility of this method. Significant fluctuations in blasting vibration velocities occur when the blast center increases to within a range of 10–20 m. As the blast center distance exceeds 25 m, the vibration velocities are increasingly influenced by the surrounding stress. Additionally, greater stress results in higher blasting vibration velocities and stress wave intensities. Fitting the blasting vibration velocities of various measurement points using the Sadovsky formula yields fitting correlation coefficients ranging between 0.92 and 0.97, enabling the prediction of on-site blasting vibration velocities based on research findings. Changes in propagation paths lead to localized fluctuations in the numerical values of stress waves. These research findings are crucial for a deeper understanding of underground blasting vibration patterns and for enhancing blasting safety. |
| format | Article |
| id | doaj-art-c9858894fc7d44c48081eec3a48833ab |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-c9858894fc7d44c48081eec3a48833ab2024-11-26T17:49:39ZengMDPI AGApplied Sciences2076-34172024-11-0114221065110.3390/app142210651A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby TunnelsZhengrong Li0Zhiming Cheng1Yulian Shi2Yongjie Li3Yonghui Huang4Zhiyu Zhang5Yunnan Diqing Nonferrous Metals Co., Ltd., Diqing 674400, ChinaFaculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaThe natural caving method, as a new technique in underground mining, has been promoted and applied in several countries worldwide. The destruction of the bottom rock mass structure directly impacts the structural stability of underground engineering, resulting in damage and collapse of underground tunnels. Therefore, based on the principles of explosion theory and field monitoring data, a scaled three-dimensional numerical simulation model of underground blasting was constructed using LS-DYNA19.0 software to investigate the attenuation patterns of underground blasting vibrations and their impact on nearby tunnels. The results show that the relative error range between the simulated blasting vibration velocities based on the FEM-SPH (Finite Element Method–Smoothed Particle Hydrodynamics) algorithm and the measured values is between 7.75% and 9.85%, validating the feasibility of this method. Significant fluctuations in blasting vibration velocities occur when the blast center increases to within a range of 10–20 m. As the blast center distance exceeds 25 m, the vibration velocities are increasingly influenced by the surrounding stress. Additionally, greater stress results in higher blasting vibration velocities and stress wave intensities. Fitting the blasting vibration velocities of various measurement points using the Sadovsky formula yields fitting correlation coefficients ranging between 0.92 and 0.97, enabling the prediction of on-site blasting vibration velocities based on research findings. Changes in propagation paths lead to localized fluctuations in the numerical values of stress waves. These research findings are crucial for a deeper understanding of underground blasting vibration patterns and for enhancing blasting safety.https://www.mdpi.com/2076-3417/14/22/10651numerical modelingblast vibrationFEM-SPH algorithmexplosion center distancein situ stress |
| spellingShingle | Zhengrong Li Zhiming Cheng Yulian Shi Yongjie Li Yonghui Huang Zhiyu Zhang A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels Applied Sciences numerical modeling blast vibration FEM-SPH algorithm explosion center distance in situ stress |
| title | A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels |
| title_full | A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels |
| title_fullStr | A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels |
| title_full_unstemmed | A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels |
| title_short | A Study on the Attenuation Patterns of Underground Blasting Vibration and Their Impact on Nearby Tunnels |
| title_sort | study on the attenuation patterns of underground blasting vibration and their impact on nearby tunnels |
| topic | numerical modeling blast vibration FEM-SPH algorithm explosion center distance in situ stress |
| url | https://www.mdpi.com/2076-3417/14/22/10651 |
| work_keys_str_mv | AT zhengrongli astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT zhimingcheng astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yulianshi astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yongjieli astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yonghuihuang astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT zhiyuzhang astudyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT zhengrongli studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT zhimingcheng studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yulianshi studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yongjieli studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT yonghuihuang studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels AT zhiyuzhang studyontheattenuationpatternsofundergroundblastingvibrationandtheirimpactonnearbytunnels |