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A method for controlling cracks in a rock during blasting and a charge holder for rock crack control used in the method
A method for controlling cracks in a rock during blasting and a charge holder for rock crack control used in the method
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机译：控制爆破过程中岩石裂缝的方法以及该方法中使用的用于控制岩石裂缝的装料架
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摘要
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the cracking direction when blasting a rock by using a gunpowder or explosives and a charge holder used in the method. The explosive is mounted on a charge holder of a predetermined shape and exploded so as to act intensively on the object to be crashed by explosive power of the explosive when blasting is performed in a desired method. A charge control holder for crack control according to the present invention is characterized in that a chamber 6 for accommodating a cylindrical explosive therein is formed therein and the upper and lower end walls 7 and 8 are substantially clogged and on the outer circumferential surface 9, And a pair of slits (10) (10) communicating with the cylindrical body (11) in a radial direction. The use of the charge holder 11 for controlling rock crack control according to the present invention makes it possible to prevent the explosive power of the explosive from intensifying in a desired direction, that is, in one direction running both slits 10 While the action in the other direction is relatively suppressed by the outer peripheral wall 9 and the upper and lower end walls 7 and 8 of the substantially closed cylindrical body, Is cracked only in one direction along the predetermined planned direction and does not crack in the other direction, so that rock cracking at the time of blasting can be effectively and economically controlled.
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