Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt
To address the practical problem of decreased anchoring effect due to the detachment of the exterior bolt head from the cave wall under dynamic loads, this paper developed a partially recoverable displacement energy absorption (RDEA) bolt. On the basis of preliminary static loading performance tests...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/15/8656 |
| _version_ | 1797587095206756352 |
|---|---|
| author | Jianlong Wang Jingmao Xu Junqi Fan Peng Guo Xiaoyan Shi |
| author_facet | Jianlong Wang Jingmao Xu Junqi Fan Peng Guo Xiaoyan Shi |
| author_sort | Jianlong Wang |
| collection | DOAJ |
| description | To address the practical problem of decreased anchoring effect due to the detachment of the exterior bolt head from the cave wall under dynamic loads, this paper developed a partially recoverable displacement energy absorption (RDEA) bolt. On the basis of preliminary static loading performance tests, a field comparative test was conducted on the blast resistance performance of the cavern reinforced by RDEA bolt. The overall damage and dynamic response of the RDEA-bolt-reinforced test section and the conventional steel-bolt-reinforced test section were compared. The research found that under the same test conditions, the macroscopic damage to the conventional steel-bolt-reinforced test section was more severe than that of the RDEA-bolt-reinforced test section. When the scaled distance was 0.93 m/kg<sup>1/3</sup>, the ratio of the rebound displacement to the displacement peak at the arch top of the conventional steel-bolt-reinforced test section was 9.09%, while that of the RDEA-bolt-reinforced test section was 31.1%. The energy consumption characteristics of the RDEA bolt were described by the pressure peak value at the third working condition of the arch top. The pressure peak value of the RDEA-bolt-reinforced test section was 76.4%, lower than that of the conventional steel-bolt-reinforced test section. The arch top acceleration of the conventional steel-bolt-reinforced test section was about 1.35 times that of the RDEA-bolt-reinforced test section. The good blast resistance performance of the cavern reinforced by RDEA bolt was reflected from various aspects, such as macroscopic damage and the wall displacement, indicating that the RDEA bolt can not only weaken the effect of explosion load at the cavern location but also enable the reinforced cavern to have a good ability to resist deformation recovery after explosion, thereby having good application prospects. |
| first_indexed | 2024-03-11T00:32:22Z |
| format | Article |
| id | doaj.art-7f52a4e12f3e4d7585c0d30ceddab0ff |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T00:32:22Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-7f52a4e12f3e4d7585c0d30ceddab0ff2023-11-18T22:35:48ZengMDPI AGApplied Sciences2076-34172023-07-011315865610.3390/app13158656Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption BoltJianlong Wang0Jingmao Xu1Junqi Fan2Peng Guo3Xiaoyan Shi4Institute of Defense Engineering, AMS, PLA, Luoyang 471023, ChinaInstitute of Defense Engineering, AMS, PLA, Luoyang 471023, ChinaInstitute of Defense Engineering, AMS, PLA, Luoyang 471023, ChinaInstitute of Defense Engineering, AMS, PLA, Luoyang 471023, ChinaInstitute of Defense Engineering, AMS, PLA, Luoyang 471023, ChinaTo address the practical problem of decreased anchoring effect due to the detachment of the exterior bolt head from the cave wall under dynamic loads, this paper developed a partially recoverable displacement energy absorption (RDEA) bolt. On the basis of preliminary static loading performance tests, a field comparative test was conducted on the blast resistance performance of the cavern reinforced by RDEA bolt. The overall damage and dynamic response of the RDEA-bolt-reinforced test section and the conventional steel-bolt-reinforced test section were compared. The research found that under the same test conditions, the macroscopic damage to the conventional steel-bolt-reinforced test section was more severe than that of the RDEA-bolt-reinforced test section. When the scaled distance was 0.93 m/kg<sup>1/3</sup>, the ratio of the rebound displacement to the displacement peak at the arch top of the conventional steel-bolt-reinforced test section was 9.09%, while that of the RDEA-bolt-reinforced test section was 31.1%. The energy consumption characteristics of the RDEA bolt were described by the pressure peak value at the third working condition of the arch top. The pressure peak value of the RDEA-bolt-reinforced test section was 76.4%, lower than that of the conventional steel-bolt-reinforced test section. The arch top acceleration of the conventional steel-bolt-reinforced test section was about 1.35 times that of the RDEA-bolt-reinforced test section. The good blast resistance performance of the cavern reinforced by RDEA bolt was reflected from various aspects, such as macroscopic damage and the wall displacement, indicating that the RDEA bolt can not only weaken the effect of explosion load at the cavern location but also enable the reinforced cavern to have a good ability to resist deformation recovery after explosion, thereby having good application prospects.https://www.mdpi.com/2076-3417/13/15/8656RDEA boltfield comparative testdynamic responseblast resistance performanceexplosion load |
| spellingShingle | Jianlong Wang Jingmao Xu Junqi Fan Peng Guo Xiaoyan Shi Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt Applied Sciences RDEA bolt field comparative test dynamic response blast resistance performance explosion load |
| title | Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt |
| title_full | Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt |
| title_fullStr | Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt |
| title_full_unstemmed | Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt |
| title_short | Experimental Study on Anti-Explosion Performance of the Cavern Reinforced by Recoverable Deformation Energy Absorption Bolt |
| title_sort | experimental study on anti explosion performance of the cavern reinforced by recoverable deformation energy absorption bolt |
| topic | RDEA bolt field comparative test dynamic response blast resistance performance explosion load |
| url | https://www.mdpi.com/2076-3417/13/15/8656 |
| work_keys_str_mv | AT jianlongwang experimentalstudyonantiexplosionperformanceofthecavernreinforcedbyrecoverabledeformationenergyabsorptionbolt AT jingmaoxu experimentalstudyonantiexplosionperformanceofthecavernreinforcedbyrecoverabledeformationenergyabsorptionbolt AT junqifan experimentalstudyonantiexplosionperformanceofthecavernreinforcedbyrecoverabledeformationenergyabsorptionbolt AT pengguo experimentalstudyonantiexplosionperformanceofthecavernreinforcedbyrecoverabledeformationenergyabsorptionbolt AT xiaoyanshi experimentalstudyonantiexplosionperformanceofthecavernreinforcedbyrecoverabledeformationenergyabsorptionbolt |