STUDY OF SHOCK ABSORPTION EFFECT OF BUFFER BLASTING
(1. School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,Hubei 430070,China;
2. Chemical Fertilizer Plant,Shaanxi Huashan Chemical Group Co.,Ltd.,Huaxian,Shaanxi 714100,China)
Abstract:the study of protective effect of buffer blasting on the reservation slope in open-pit mine is decribed. Based on the data of blasting vibration in the open-pit mine,the data of blasting experimental vibration on having or not having buffer blasting hole are given by setting reasonable buffer blasting parameters. Using FEM program of LS-DYNA,the two different numerical models are made to study the bench blast;and comparative analysis of the simulation results with the results of field experiment makes a conclusion that the more near from is the explosion source,the better decreasing effect is;and half cast factor can be improved mostly 30% of the presplitting blast hole. On the basis of comparative analysis of the simulation results and the field experimental data,it is concluded that it will decrease the blasting vibration 51 % under the same condition with having the presplitting blast hole at mostly,so it will do strongly protective effect on the reservation boundary working slope.
收稿日期: 2010-12-10
引用本文:
张袁娟1,黄金香1,袁 红2. 缓冲爆破减震效应研究[J]. 岩石力学与工程学报, 2011, 30(5): 967-973.
ZHANG Yuanjuan1,HUANG Jinxiang1,YUAN Hong2. STUDY OF SHOCK ABSORPTION EFFECT OF BUFFER BLASTING. , 2011, 30(5): 967-973.
HAMDI E,MOUZA J D. A methodology for rock mass characterisation and classification to improve blast results[J]. International Journal of Rock Mechanics and Mining Sciences,2005,42(2):177-194.
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