Two-medium decoupling blasting method of charge control
ZHAO Jinchang
LI Yi
MA Bucai
ZHU Zhi-wu
Abstract：In order to control more precisely the position where crack will occur and the direction in which it will develop when blasting takes place,to control precisely the formation of fracture surface and to protect the surround-ing rock effectively,put forward a new type of blastingtwo-medium decoupling blasting method and made special PVC pipes.Gotten the following conclusions through theoretical study and field testthe even distribution of explo-sive energy is changed because of two-medium.Sufficient damage to the rock on the one side of aqueous medium and compression of air buffer playing a part in rock tossing mean increasing the power of explosive.There is no ob-vious crackle on reserves,which protects the surrounding rock effectively.The section will be more uniform with good shape by using this new blasting method,thus reducing the amount of back brushing.
Keywords：two-mediumblastingprotect the surrounding rockcontrol fracture
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1637-1642 )