Continuous-discontinuous analysis of bench blasting in open-pit mining: Influences of hole packing and caving holes  

作　　者：Xueya Wang Yiming Zhang Chun Feng Timon Rabczuk 

机构地区：[1]Ningbo University,Key Laboratory of Impact and Safety Engineering,Ningbo,315211,China [2]Zhejiang Sci-Tech University,School of Civil Engineering and Architecture,Hangzhou,310018,China [3]Institute of Mechanics,Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Chinese Academy of Sciences,Beijing,100190,China [4]Institute for Structural Mechanics,Bauhaus-Universitat Weimar,99423,Weimar,Germany

出　　处：《Rock Mechanics Bulletin》2024年第4期34-40,共7页岩石力学通报（英文）

基　　金：the financial support by the National Natural Science Foundation of China(NSFC)(52178324).

摘　　要：Bench blasting is commonly used in open-pit mining.Some design parameters such as positions of hole packing and caving holes have great influences on the blasting effects.In this work,with a hybrid discrete-finite element method,numerical simulations of bench blasting are conducted,capturing the whole continuous-discontinuous processes.Considering two engineering cases,the influences of hole packing and caving holes are evaluated.The numerical results not only lead to some improved designs by relocating the packing positions and caving holes but also indicate the reliability of the adopted numerical tools.

关 键 词：Continuous-discontinuous element method (CDEM) Bench blasting Hole packing Caving hole Numerical simulations 

分 类 号：TD235[矿业工程—矿井建设]