Academic Journal of Engineering and Technology Science, 2026, 9(1); doi: 10.25236/AJETS.2026.090103.
Gui Wei1, Zong Qi1
1School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, China
In the process of tunnel blasting and tunneling construction, the blasting effect is often poor due to the bedding and weak surfaces of the surrounding rock. The results show that the blasting effect of the computational model with a delay of 4 ms between the two holes is the best under the action of stress waves, and the peak attenuation of stress on both sides of the bedding surface closest to the post-blasting hole is the smallest, only 48%, and the design requirements of the delayed detonation time between the pores of the bedding rock mass are consistent with that of the complete rock mass. That is, when the first burst stress wave completes the expansion stage of rock fractures, the blasting effect will be better when the burst hole is detonated again.
Tunnel blasting; bedding; delay time; blasting effect
Gui Wei, Zong Qi. Research on the Influence of Delay Time between Layered Blasting Holes on Blasting Effect. Academic Journal of Engineering and Technology Science (2026), Vol. 9, Issue 1: 24-32. https://doi.org/10.25236/AJETS.2026.090103.
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