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爆破作业中用导火索引爆时,有时会发生导火索速燃,对安全造成严重威胁。1975年我矿西山采矿场在一周之内,曾连续发生两起导火索速燃引起的伤亡事故。据悉,在同一年里,外地也有九个单位发生过类似的速燃事故,伤亡二十多人。都在事故发生后对导火索质量进行了检查鉴定,做了多次燃速试验,有的单位竟试燃了四千多米导火索,但检查的结果,导火索的燃速均符合标准:100~125秒/米。
Blasting operations detonated with a fuse, sometimes flash fire fuse, causing serious threats to safety. In 1975, I Mine Xishan Mining Field within a week, there have been two consecutive fire-induced fuselage caused casualties. It is learned that in the same year, similar flash-fire accidents occurred in nine other places in the Mainland, killing more than 20 people. After the accident occurred on the fuse quality inspection conducted identification, made a number of burning rate test, and some units actually tried the fuse more than 4000 meters, but the test results, the burning rate of the fuse Meet the standard: 100 ~ 125 seconds / meter.