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日本根据本国的特点,对用于煤矿的电雷管有如下规定: 1.电雷管必须是安全型6号,即6号安型雷管或6号煤矿雷管。厂家生产的煤矿雷管必须送国家指定的检验机构(如北海道资源公害研究所)检验,合格(批准)后,才允许出售、应用。检验方法是:用一小爆炸箱(长300毫米×宽300毫米×高400毫米,钢板壁厚5毫米)充以9±0.3％的天然甲烷。受检雷管(1发)悬吊于爆炸箱中间,连续试验若干发,百分之百不引起瓦斯爆炸为合格(发合格证)。 2.煤矿雷管必须是铁管壳、镀铜,镀铜厚度不小于10微米。采用铁管壳以便用磁力吸出爆破作业中的
Japan has the following provisions for electric detonators used in coal mines according to its own characteristics: 1. The electric detonator must be safety type No. 6, that is, No. 6 safety type detonator or No. 6 coal mine detonator. Manufacturers of mine detonators must be sent to the state designated inspection agencies (such as Hokkaido Institute of Resources and Pollution) inspection, after passing (approval), was allowed to sell, application. The test method was to fill 9 ± 0.3% natural methane with a small explosion bomb (length 300 mm × width 300 mm × height 400 mm, steel plate thickness 5 mm). Detector detonator (1 hair) suspended in the middle of the explosion box, a number of consecutive tests of hair, one hundred percent does not cause gas explosion as qualified (issued certificate). 2. Mine detonators must be iron pipe shell, copper, copper thickness of not less than 10 microns. The use of iron pipe shell in order to use magnetic suction blasting operations