To investigate the dynamic response and failure law of underground caverns during operation under explosive loads, the anti explosion performance of underground caverns was studied based on a three-dimensional finite difference numerical simulation platform. The stress, acceleration, displacement, and strain distribution patterns of the surrounding rock structure of the cavern under explosive loads were obtained, and the stress distribution and plastic zone state of the surrounding rock structure were compared and analyzed. The research results indicate that the peak stress generated by different models of explosions varies under different explosive dosages. At the same time node, the higher the peak stress, the greater the stress in the damage area generated by the explosives; When the explosion stress wave propagates to the tunnel, the surrounding rock structure enters a tensile plastic state, and the medium units near the borehole mainly undergo tensile shear failure, while the medium units far away from the borehole mainly undergo tensile failure.

Yuan Xiaohu, Zhang Shuguo. Study on the Dynamic Response Characteristics of Surrounding Rock Mass of Underground Caverns under Blast load. Academic Journal of Architecture and Geotechnical Engineering (2024) Vol. 6, Issue 2: 7-13. https://doi.org/10.25236/AJAGE.2024.060202.

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