Study on peak overpressure prediction of underground blasting shock waves on straight-through roadways

doi:10.16265/j.cnki.issn1003-3033.2019.03.010

Abstract

Abstract: In order to reduce the impact of blasting shock waves on underground personnel and equipment, studies were conducted by using the NUBOX-9012 intelligent blasting shock wave monitor and the matched shock wave sensor to monitor the explosion shock wave on site and using the finite element software ANSYS/LS-DYNA to simulate the attenuation process of blasting shock waves on the straight-through roadway. The results of numerical calculations were extracted, the unknown coefficients b₁, b₂, and b₃ in the formula for shock wave peak overpressure prediction on straight-through roadways with one end opening were acquired, and the calculated value was obtained by substituting the original data of different doses at different distances into the prediction formula as compared with the measured value. The results show that the prediction error is within reasonable limits, and the prediction formula are applicable to the prediction of the peak overpressure of shock waves on straight-through roadways.

Key words: blasting shock wave, straight-through roadway, NUBOX-9012 monitor, numerical simulation, attenuation law

CLC Number:

X936

LUO Haohao, LI Xianglong, WANG Jianguo, LI Guangtao, LI Zaili. Study on peak overpressure prediction of underground blasting shock waves on straight-through roadways[J]. China Safety Science Journal, 2019, 29(3): 57-62.

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