Impedance Matching Algorithm for Selection of Suitable Explosives for Any Rock Mass-A Case Study

作     者：Ajay Kumar Jha 

作者机构：BioID GmbHNürnberg 90489Germany 

出 版 物：《Journal of Geological Resource and Engineering》 (地质资源与工程（英文版）)

年 卷 期：2020年第8卷第2期

页      面：55-65页

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Explosive selection impedance matching rock impedance explosive impedance 

摘      要：Proper selection of the explosive is an important part of blast *** judicious selection of explosives is governed by economic considerations and site/field *** mine management desires to select an explosive that will give the lowest cost per unit of rock broken,while assuring that fragmentation,fragment size distribution,muck pile profile,muck pile diggability,displacement of the rock,onset of movement,face movement,burden relief rate,ground vibration and noise remains within control *** which influence the selection of an explosive include explosive cost,charge diameter,cost of drilling,fragmentation difficulties and fragment size requirement with loose muck pile condition,water conditions,atmospheric temperature,propagating ground,storage considerations,sensitivity considerations,explosive atmospheres and nearness of communities from *** these concerns can be handled effectively by using the impedance matching technology where explosive impedance is matched with rock impedance for optimal blast performance with due concern to productivity,economics and *** paper discusses a case study in limestone mines where rock impedance was determined by carrying out surface refraction test and a patented algorithm was used to estimate the explosives’properties ***(velocity of detonation)and density of explosives required.