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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 5    No. 4    December 1995

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PREDICTION OF BLOCK CAVING RATE USING SUBCRITICAL CRACK GROWING VELOCITY
Chao Ping; Pan Changliang; Sun Zongqi; Luo Li

Department of Resources Exploitation Engineering ; Central South University of Technology; Changsha 410083

Abstract:Block caving is a productive method of mining without drilling and blasting,whose output of ore is determined by the caving process of orebody. Therefore a method to predict the caving of orebody using the priniciple of crack growing rate was developed.With the method the orebody caving rate of Tongkuangyu copper mine in China has been predicted.

 

Key words: subcritical crack growth; double torsion testing; block caving rate; block caving

ISSN 1672-7029
CN 43-1423/U

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