Anti-detonation property of reinforcement rock

XU Gancheng; YUAN Weize; GU Jincai; ZHANG Xiangyang

doi:10.11883/bzycj-2018-0203

Volume 39 Issue 5

May 2019

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XU Gancheng, YUAN Weize, GU Jincai, ZHANG Xiangyang. Anti-detonation property of reinforcement rock[J]. Explosion And Shock Waves, 2019, 39(5): 052203. doi: 10.11883/bzycj-2018-0203

Citation:

XU Gancheng, YUAN Weize, GU Jincai, ZHANG Xiangyang. Anti-detonation property of reinforcement rock[J]. Explosion And Shock Waves, 2019, 39(5): 052203. doi: 10.11883/bzycj-2018-0203

XU Gancheng, YUAN Weize, GU Jincai, ZHANG Xiangyang. Anti-detonation property of reinforcement rock[J]. Explosion And Shock Waves, 2019, 39(5): 052203. doi: 10.11883/bzycj-2018-0203

Citation:

XU Gancheng, YUAN Weize, GU Jincai, ZHANG Xiangyang. Anti-detonation property of reinforcement rock[J]. Explosion And Shock Waves, 2019, 39(5): 052203. doi: 10.11883/bzycj-2018-0203

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Anti-detonation property of reinforcement rock

doi: 10.11883/bzycj-2018-0203

1.
Engineering Design and Research Institute, The Air Force Academy, Beijing 100068, China
2.
Engineer Protective Engineering Institute, Academy of Military Sciences PLA China, Luoyang 471023, Henan, China

Received Date: 2018-06-10
Rev Recd Date: 2018-07-19

Available Online: 2019-07-25

Publish Date: 2019-05-01

Abstract

Abstract

To improve the anti-detonation property of surrounding rock, the surrounding rock reninforced by crossing cable method was proposed, and the effects of the method were analyzed by anology experiments and numerical simulation. The d pressure and strain distributions under detonation, explosion cavity dimensions and reinforcing cable parameters on strengthening effects were investigated. The results indicate that the detonation pressure peak value near the detonation center, radial strain peak value and circumferential strain peak value are all negative exponential decay with the proportional distance, no matter the rock is strengthened or not. Under the focus point explosion, the pressure and peak strain rapidly decrease with the distance apart from the detonation point. Under the concentrated charging case, the explosion cavity displays as a vase with the thin head part and fat bottom part. The explosion cavity of the magmatic body without strengthening is comparatively large. The influences of reinforced crossing cable angle on medium compression radius is limited. With the increase of the density of the reinforced crossing cable, the peak value of the compression wave in the strengthened medium decreases about 20%-35% and the destruction radius decreases about 30%. The results of this paper can provide references to the underground protective engineering design and enclosing rock strengthening.
- anti-detonation property,
- model test,
- reinforcement,
- anchor cable,
- explosion cavity

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References(13)

References

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