Practical assessment of rock damage due to blasting

作     者：Jhon Silva Tristan Worsey Braden Lusk 

作者机构：Department of Mining EngineeringUniversity of KentuckyLexingtonKY 40508USA Department of Mining and Nuclear EngineeringMissouri University of Science and TechnologyRollaMO 65409USA 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2019年第29卷第3期

页      面：379-385页

核心收录：

学科分类：0819[工学-矿业工程] 08[工学] 

主　　题：Blasting Fracture Fracture extension Peak particle velocity 

摘      要：Blasting is the most cost effective methodology to break rock for mining or civil engineering applications.A good production blast will break only the rock that is needed to be removed,leaving the host rock with minimal *** control of rock damage due to blasting is very important when it comes to mine or construction design,safety,and *** to the host rock due to a production blast could result in failures,overbreak and unstable *** how far the fractures generated by a production blast will go into the host rock is a valuable tool for engineers to design a safe highwall while keeping the actual excavation close to the ***,there are several methods available to predict damage due to *** accuracy of many of these methods is questionable,and in most cases,the methodologies over predict the *** often leads to inefficient mines and poor construction *** the current methodologies are reviewed,each one presents sound approaches,but in many cases they also lack consideration of other variables that,according to the authors,need to be included when predicting blast *** paper presents a practical methodology to assess the rock damage from blasting by combining other *** proposed method allows consideration of more variables when compared to available methods,resulting in a more accurate rock damage *** method uses the estimation of the generated levels of peak particle velocity with the distance from a production blast presented by Persson and Holmberg,the peak particle velocity damage ranges proposed by Forsyth and the relationship between the static compressive strength and dynamic compressive strength of rocks from *** new methodology was validated using the data published in a large-scale study performed in granite by Siskind.