| 摘要 |
A blasting method by loading a non-electric MS detonator to a contour hole and coupling a detonating fuse is provided to increase blasting efficiency, to restrain the damage of the surrounding bedrock to the upmost, and to obtain a beautiful blasting surface of a wall of a tunnel. A blasting method by loading a non-electric MS detonator(20) to a contour hole and coupling with a detonating fuse(10) comprises the steps of loading a non-electric detonator to a cut hole, a surrounding hole and a bottom hole, loading a non-electric MS detonator to a contour hole and coupling a detonating fuse, coupling the non-electric detonator to a blasting machine and blasting the front with a time lag, wherein the contour hole is exploded with a time lag of 20ms or 25ms.
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