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    • 8. 发明公开
    • METHOD OF THE SHORTEST INTER-HOLE DELAY BLAST AND THE BLASTING AND DELAYING MEANS
    • 最短孔间距爆破的方法及爆破和延迟装置
    • EP3198218A1
    • 2017-08-02
    • EP15845338.1
    • 2015-02-09
    • Ryu, In Mu
    • RYU, Nam Sok
    • F42D1/055F42D3/04F42D3/06F42B3/00C06C5/00
    • F42D3/04
    • A method of blasting the rock, wherein the blastholes along the rows are fired with the shortest inter-hole delay time ranging from 0.1 ms to 4.5ms in such a manner that a stressfield propagates within the stressfield pre-propagated from the preceding adjacent blasthole, thereby enhancing the fragmentation and preventing the explosive energy released to the venting of explosion gas, and the environmental impact caused by the production of excessive sound. The shortest inter-hole delay time is obtained by the length of the shock tube which is a requisite for transmitting the initiation signals to the blastholes and is used in the non-electric bidirectional firing systems such as PULKKOT system. The shock tube itself is the precise blasting and delaying mean which could provide the shortest delay time at a lowest production cost, prevent the enormous economic loss due to the use of the delay detonators with the inter-hole delays of 9ms, 17ms, 25ms and 42ms, and increase the effect of the explosive energy over 1.5 times. The shortest inter-hole delay time may also be provided by the control of the electronic initiation system, but in which case, the cost is more than 5 times expensive. The present invention is based on practical experiences of more than 50 years and has been utilized in the blasting practices for over 20 years.
    • 一种对岩石进行爆破的方法,其中沿着行的炮孔以最短的孔间延迟时间范围从0.1ms到4.5ms被发射,使得应力场在从前一相邻炮眼预先传播的应力场内传播, 从而加强碎裂,防止释放到爆炸气体中的爆炸能量,以及由于产生过量声音而造成的环境影响。 最短的孔间延迟时间通过激波管的长度来获得,该长度是将起爆信号传输到炮眼所必需的,并用于诸如PULKKOT系统的非电双向燃烧系统。 激波管本身就是精确的爆破和延迟平均值,可以以最低的生产成本提供最短的延迟时间,避免由于使用延迟雷管而产生的巨大的经济损失,延迟时间为9ms,17ms,25ms和 42ms,并增加爆炸能量超过1.5倍的效果。 最短的孔间延迟时间也可以由电子启动系统的控制来提供,但是在这种情况下,成本高于5倍昂贵。 本发明基于超过50年的实践经验并且已经在超过20年的爆破实践中使用。