214 工程科学学报,第43卷,第2期 [25]Song Z Y,Wei W J,Zhang J W.Numerical investigation of effect 究及最优崩矿步距的确定.工程科学学报,2016,38(2):159) of particle shape on isolated extracted zone(IEZ)in block caving [30]Castro R,Gomez R,Pineda M,et al.Experimental quantification 4 rab J Geosci,2018.11(12):310 of vertical stresses during gravity flow in block caving.Int Rock [26]Hu J H,Guo FZ,Luo X W,et al.Simulation of ore flow behavior Mech Min Sci,2020,127:104237 and optimization of discharge parameters for caving method in [31]Rafiee R,Ataei M,Khalookakaie R,et al.Numerical modeling of gently inclined medium thickness ore-body.J Cent South Univ Sci influence parameters in cavabililty of rock mass in block caving Technol,.2015,46(5):1772 mines.Int J Rock Mech Min Sci,2018,105:22 (胡建华,郭福钟,罗先伟,等.缓倾斜中厚矿体崩落开采矿石流 [32]Itasca Consulting Group Inc.PFC6.0 documentation[EB/OL]./ta- 动规律仿真与放矿参数优化.中南大学学报(自然科学版), sca Consulting Group Inc (219)220-07-11].hutp://docs.itascacg. 2015,46(5):1772) com/pfc600/pfc/docproject/index.html [27]Sun H,Jin A B,Gao Y T,et al.Influencing factors on the flow [33]Sun H,Jin A B,Elmo D,et al.A numerical based approach to characteristics of an isolated extraction zone in caving mining calculate ore dilution rates using rolling resistance model and Chin J Eng,2015,37(9:1111 upside-down drop shape theory.Rock Mech Rock Eng,2020, (孙浩,金爱兵,高永涛,等.崩落法采矿中放出体流动特性的影 53(10:4639 响因素.工程科学学报,2015,37(9):1111) [34]Sun H.Study on Migration and Evolution Mechanism of Caved [28]Sun H.Jin A B.Gao Y T,et al.Flow characteristics of caved ore Ore and Rock Based on the Particle Flow Theory Dissertation]. and rock under complex boundary conditions.J Cent South Univ Beijing:University of Science and Technology Beijing,2019 Sci Technol,.2015,46(10):3782 (孙浩.基于颗粒元理论的崩落矿岩运移演化机理研究学位论 (孙浩,金爱兵,高永涛,等.复杂边界条件下崩落矿岩流动特性 文]北京:北京科技大学,2019) 中南大学学报(自然科学版),2015,46(10):3782) [35]Castro R L.Study of the Mechanisms of Gravity Flow for Block [29]Sun H,Jin A B,Gao Y T,et al.Research of the isolated extraction Caving[Dissertation].Brisbane:University of Queensland,2007 zone form and determination of optimal independent advance [36]Arevalo R,Maza D,Pugnaloni L A.Identification of arches in under different end wall angles.ChinJEng,2016,38(2):159 two-dimensional granular packings.Phys Rev E Stat Nonlin Sofr (孙浩,金爱兵,高永涛,等.不同端壁倾角条件下放出体形态研 Matter Phys,2006,74(2):021303Song Z Y, Wei W J, Zhang J W. Numerical investigation of effect of particle shape on isolated extracted zone (IEZ) in block caving. Arab J Geosci, 2018, 11(12): 310 [25] Hu J H, Guo F Z, Luo X W, et al. Simulation of ore flow behavior and optimization of discharge parameters for caving method in gently inclined medium thickness ore-body. J Cent South Univ Sci Technol, 2015, 46(5): 1772 (胡建华, 郭福钟, 罗先伟, 等. 缓倾斜中厚矿体崩落开采矿石流 动规律仿真与放矿参数优化. 中南大学学报 (自然科学版), 2015, 46(5):1772) [26] Sun H, Jin A B, Gao Y T, et al. Influencing factors on the flow characteristics of an isolated extraction zone in caving mining. Chin J Eng, 2015, 37(9): 1111 (孙浩, 金爱兵, 高永涛, 等. 崩落法采矿中放出体流动特性的影 响因素. 工程科学学报, 2015, 37(9):1111) [27] Sun H, Jin A B, Gao Y T, et al. Flow characteristics of caved ore and rock under complex boundary conditions. J Cent South Univ Sci Technol, 2015, 46(10): 3782 (孙浩, 金爱兵, 高永涛, 等. 复杂边界条件下崩落矿岩流动特性. 中南大学学报 (自然科学版), 2015, 46(10):3782) [28] Sun H, Jin A B, Gao Y T, et al. Research of the isolated extraction zone form and determination of optimal independent advance under different end wall angles. Chin J Eng, 2016, 38(2): 159 (孙浩, 金爱兵, 高永涛, 等. 不同端壁倾角条件下放出体形态研 [29] 究及最优崩矿步距的确定. 工程科学学报, 2016, 38(2):159) Castro R, Gómez R, Pineda M, et al. Experimental quantification of vertical stresses during gravity flow in block caving. Int J Rock Mech Min Sci, 2020, 127: 104237 [30] Rafiee R, Ataei M, Khalookakaie R, et al. Numerical modeling of influence parameters in cavabililty of rock mass in block caving mines. Int J Rock Mech Min Sci, 2018, 105: 22 [31] Itasca Consulting Group Inc. PFC 6.0 documentation[EB/OL]. Itasca Consulting Group Inc (2019)[2020-07-11]. http://docs.itascacg. com/pfc600/pfc/docproject/index.html [32] Sun H, Jin A B, Elmo D, et al. A numerical based approach to calculate ore dilution rates using rolling resistance model and upside-down drop shape theory. Rock Mech Rock Eng, 2020, 53(10): 4639 [33] Sun H. Study on Migration and Evolution Mechanism of Caved Ore and Rock Based on the Particle Flow Theory[Dissertation]. Beijing: University of Science and Technology Beijing, 2019 (孙浩. 基于颗粒元理论的崩落矿岩运移演化机理研究[学位论 文]. 北京: 北京科技大学, 2019) [34] Castro R L. Study of the Mechanisms of Gravity Flow for Block Caving[Dissertation]. Brisbane: University of Queensland, 2007 [35] Arévalo R, Maza D, Pugnaloni L A. Identification of arches in two-dimensional granular packings. Phys Rev E Stat Nonlin Soft Matter Phys, 2006, 74(2): 021303 [36] · 214 · 工程科学学报,第 43 卷,第 2 期