The Study Of Optimizing Blasting Parameter About Cranny Rock In WuLongQuan Mine

This topic is put forward to solving the problems of agglomerate and particle on the high side in the Wu Long Quan mine. Due to the complicated geologic conformation of the mine, it is difficult to achieve ideal effects. It is urgent to take effective measures to take good control of the agglomerate and particle rate to improve economic benefits.The thesis first analyses the blasting of the circular no coupling. The thesis lays emphasis on the study of the problem from three aspects including theory, experiment and numerical simulation. After analyzing the causation of improvements in blasting impact by using circular no coupling charging structure, On the basis of the elasticity and plasticity damnification theory and rock Rupture mechanics, the expressions of blasting bounds and energy consume is educed, which can control the agglomerate and particle rate by using circular no coupling coefficient.As for numerical simulation, the paper has built its own model on the basis of ANSYS, calculating the models and showing the courses of the rock blasting process in which coupling charging and circular no coupling charging on the basis of LS-DANY 960, as is helpful to understand the crash status by blasting stress in cranny-rock body and to validate the theory.At the aspect of experiment, the parameters are designed by theory and experience expressions and then they are applied in the experimentation. The effects of blasting of using circular no coupling are compared with that of using coupling parameters which are applied in the Wu Long Quan mine, And then the circular no coupling parameters are checked up and revised.