Hybrid finite-discrete element modelling of dynamic fracture and resultant fragment casting and muck-piling by rock blast

被引：131
作者：
An, H. M. [1 ,2 ]
Liu, H. Y. [1 ]
Han, Haoyu [1 ]
Zheng, Xin [1 ,3 ]
Wang, X. G. [2 ]
机构：
[1] Univ Tasmania, Sch Engn & ICT, Hobart, Tas 7001, Australia
[2] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing, Peoples R China
[3] Northeastern Univ, Sch Resources & Civil Engn, Shenyang, Liaoning, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 81卷
关键词：
Hybrid FEM-DEM; Dynamic fracture; Rock blast; Numerical method; Failure mechanism; Fragment muck-piling; BRITTLE ROCK; NUMERICAL-SIMULATION; TENSILE DAMAGE; GAS-PRESSURE; PROPAGATION; CONTINUUM; WAVE; FAILURE; STRESS; MASSES;
D O I：
10.1016/j.compgeo.2016.09.007
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A state-of-the-art review is conducted to highlight the fracture mechanism in rock blast and advantages and limitations of various methods in modelling it. A hybrid finite-discrete element method (FEM-DEM) is implemented to simulate rock fracture and resultant fragment muck-piling in various blasting scenarios. The modelled crushed, cracked and long radial crack zones are compared with those in literatures to calibrate the hybrid FEM-DEM. Moreover, the hybrid modelling reproduces the rock fragmentation process during blasting. It is concluded that the hybrid FEM-DEM is superior to continuous and discontinuous methods in terms of modelling dynamic fracture of rock under blast-induced impact load. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：322 / 345
页数：24
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