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我矿井下深孔电气爆破联线方式,自1959年投产以来直到1966年底,一直采用并——串——并方式,即在每个炮孔内装一对并联的电雷管,然后孔与孔之间串联。当时认为,这种联线方式,孔内装有一对并联的电雷管,损坏了一个,还有一个可以备用,起爆比较可靠。可是,
I underground deep hole electrical blasting line mode, from 1959 put into operation until the end of 1966, has been using and - string - and the way, that is, each hole in a pair of parallel electric detonator, and then hole and hole Between the series. At that time, that connection, the hole is equipped with a pair of electric detonators in parallel, damaged one, there is a spare, detonating more reliable. but,