A new theory of rock-explosive matching based on the reasonable control of crushed zone  

作　　者：Leng Zhendong 

机构地区：[1]State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University Wuhan 430072, China [2]Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of Ministry of Education, Wuhan University, Wuhan 430072, China

出　　处：《Engineering Sciences》2014年第6期32-38,共7页中国工程科学（英文版）

基　　金：Foundation items： National Science Fund for Distinguished Young Scholars, China （No. 51125037）; Natio- nal Basic Research Program of China （No. 2011CB013501）; National Natural Science Foundation of China （No. 51279135）

摘　　要：Rational rock-explosive matching is of great importance to enhancing explosive energy effective utilization and improving rock fragmentation effect.The traditionally emphasized method of acoustic impedance matching is not rational.Based on blasting breakage mechanism,a new theory of rock-explosive matching in drilling and blasting is proposed.The new approach chooses explosive parameters by reasonable control of the size of crushed zone under the condition of fully fragmentation between adjacent blast holes.This method can directly reflect the blasting fragmentation effect and energy effective utilization,which is easy to implement.Also,a modified model is developed,taken adjacent blast hole blasting loading into account.As a result,explosive parameters of different grades of rock are given in full coupling on-site mixed explosive charge for different project objectives.

关 键 词：drilling and blasting crushed zone rock-explosive matching acoustic impedance matching 

分 类 号：TD235.33[矿业工程—矿井建设] TB552[理学—物理]