The invention discloses a tunnel
millisecond blasting method. The method comprises the following steps of 1, distributing of blast holes, the number of the blast holes and the blasting parameters of the blast holes are designed, wherein the blasting parameters of the blast holes comprise hole diameters, hole distances, resistance lines and depth of a periphery hole, an reliever hole and a
cut hole; 2, the blast holes are drilled in a tunnel boring face to be blasted; 3, explosive loading is carried out on the blast holes drilled in the tunnel boring face; 4, blocking and compacting is carriedout on the blast holes filled with explosive; 5, time
delay setting is carried out on digital electronic detonators in all the blast holes; and 6, after the time
delay setting is finished, wire connecting is carried out, and sequential
detonation is conducted after determining that no errors exist. Compared with an existing
millisecond blasting technology which is complex in blasting mechanism anddoes not have explicit theory and practice supports, the tunnel
millisecond blasting method has the advantages that the different
cut blasting methods are adopted for different surrounding rocks andfield conditions, so that the purposes of improving blasting efficiency, reducing the vibration speed and saving financial resources are achieved.