EXPERIMENTAL RESEARCH ON MILLISECOND DELAY BLASTING TECHNIQUE FOR ROCK DRIFTING

Xu Ying, Liu Jiming. EXPERIMENTAL RESEARCH ON MILLISECOND DELAY BLASTING TECHNIQUE FOR ROCK DRIFTINGJ. CHINA MINING MAGAZINE, 1997, 6(5): 30-34.

Citation:

Xu Ying, Liu Jiming. EXPERIMENTAL RESEARCH ON MILLISECOND DELAY BLASTING TECHNIQUE FOR ROCK DRIFTINGJ. CHINA MINING MAGAZINE, 1997, 6(5): 30-34.

Citation:

Xu Ying, Liu Jiming. EXPERIMENTAL RESEARCH ON MILLISECOND DELAY BLASTING TECHNIQUE FOR ROCK DRIFTINGJ. CHINA MINING MAGAZINE, 1997, 6(5): 30-34.

Abstract

Through theorical analysis and laboratory model tests, the optimum blasting parameters ofmillisecond blasting for rock drifting have been gotten. A new millisecond electric detonator has been developed and it was proved by site commecialr test. Therefore, the utilization of boreholes increases by 7. 8%and the charging time is shortened by 20- 30%.

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