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| Field experimental study on the blasting vibration law of underground water-sealed oil cavern group |
| LI Junyan1, CHEN Jian2, LU Xuefeng1, CHEN Xiang3
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1. CNOOC Petrochemical Engineering Co., Ltd., Jinan 250014, Shandong, China;
2. Zhoushan National Petroleum Reserve Base Co., Ltd., Zhoushan 316021, Zhejiang, China;
3. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China |
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Abstract Based on the blasting construction of a large-scale underground water-sealed cavern reservoir project, field vibration monitoring was conducted to analyze the propagation law of blasting vibration in the surrounding rock of the cavern group.The peak particle velocity(PPV)of the surrounding rock was found to occur during the detonation of the perimeter holes or floor holes. The attenuation of PPV in the surrounding rock of the blasting cavern was in good agreement with the Sadovsky formula. A significant difference in vibration was observed between the two side walls of adjacent caverns. An amplification effect was identified for the PPV on the side wall facing the blast, while the PPV on the opposite side wall was only 5% to 10% of that on the blast-facing side. Furthermore, the PPV on the cavern side wall was found to decrease in a wavy pattern with increasing horizontal distance from the blasting source. The research results provide a reference for the monitoring, prevention, and control of blasting vibration in underground caverns.
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Published: 29 December 2025
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