Rock pillar rockburst step-by-step relief water filling blasting method in deep-buried tunnel penetrating process
作者： Shan Zhigang , Peng Peng
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摘要: The invention relates to a rock pillar rockburst step-by-step relief water filling blasting method in deep-buried tunnel penetrating process. aims at control and solves the construction safety progress problems caused by strong rockblast. adopts technical scheme that a, when thickness between two tunnels is 30m, digging stopped; group of blast holes through whole pillars are horizontally drilled surface one tunnel; b, powder charging respectively carried out depth ranges being 12 13m 17 18m from hole openings, sections simultaneously initiated; c, 7 8m 22 23m d, 2 3m 27 28m total intensity controlled be 0.07kg/T, initiated, slag tapping after completion until penetration completed. applicable underground engineering hydraulic hydro-power engineering, traffics, coal mines like.
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