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在露天矿梯段深孔爆破中,随着非电起爆管系统的应用,对孔网起爆顺序的控制更为方便,隔孔孔间微差爆破法就是利用这一系统控制起爆顺序的。其特点是孔网中任何一个孔的爆破时间,均与其上、下、左、右的炮孔有一个微差间隔,而与隔孔对角线上的炮孔同时起爆。 (一)控制起爆顺序可以增大炮孔邻近系数控制孔网的起爆顺序以增大炮孔的邻近系数,在斜爆中曾经用过。斜爆是使矩形孔网中同一对角线上的炮孔同时起爆,形成近似于三角形孔网的排间微差爆破,但比三角形孔网的
In the deep-hole blasting of open pit mines, with the application of non-electric detonating pipe system, it is more convenient to control the initiation sequence of the hole network. The method of differential blasting between the holes of the hole is to control the initiation sequence by using this system. It is characterized by any hole in the hole burst time, with its upper, lower, left and right of the hole has a slight difference, while the diagonal hole with the hole at the same time detonated. (A) control the initiation sequence can increase the blasting hole adjacent coefficient control hole network initiation order to increase the hole near coefficient, has been used in oblique blasting. The oblique burst causes simultaneous detonation of the blasthole on the same diagonal in the rectangular hole network to form an array of millisecond blasting that approximates the triangular hole network,