This study introduces an approach for constructing groups of filled cracks in the surrounding rock to achieve anti-blasting and wave elimination protection for underground caverns. To verify the attenuation effect of the explosion wave by the filled cracks, two models, a no-crack model, and a filled-crack model, were constructed using a certain proportion of analogue materials based on the similarity theory. With the implementation of small equivalent explosion conditions, the peak pressure of the surrounding rock of the cavern and the vibration acceleration of the cavern wall under different explosion conditions were measured. To accurately judge the attenuation efficiency of the filled cracks, the peak pressure attenuation percentages between different measuring points were calculated. Furthermore, the corresponding numerical simulation analysis process was performed according to the test conditions. The results show that not only the peak pressure attenuation percentages, but also the value of vibration acceleration, were significantly reduced due to the existence of filled cracks in the model. This indicates that filled cracks in the surrounding rock of the cavern can effectively attenuate the peak pressure and vibration acceleration caused by the explosion wave, thereby achieving the protection engineering goal of anti-explosion and wave elimination.
Research on the Attenuation of Blast Wave by Groups of Filled Cracks in Surrounding Rock of Cavern
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 27 , 7 ; 3097-3109
2023-07-01
13 pages
Article (Journal)
Electronic Resource
English
Rock dynamics research related to cavern development for ammunition storage
Tema Archive | 1999
|European Patent Office | 2022
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