河南理工大学学报（自然科学版）2026，Vol.45Issue(3)：77-84,8.DOI:10.16186/j.cnki.1673-9787.2025010012
基于离散元数值计算的螺旋滚筒装煤过程颗粒运动特性研究
Study on particle motion characteristics during coal loading process of spiral drum based on discrete element numerical calculation
摘要
Abstract
Objectives To study the particle motion characteristics of coal particles during the coal loading process of a shearer spiral drum,and to analyze the main factors affecting the coal loading performance of the spiral drum,thereby improving the coal loading efficiency of the shearer,a computer-aided numerical simulation research method combining"measured calibration-discrete element modeling-numerical calculation-industrial verification"is proposed.Methods Taking a certain type of shearer screw drum as the research object,the study integrates 3D digital modeling and discrete element method(DEM)numerical calculation based on core computer simulation techniques.The intrinsic material parameters are calibrated using coal sample property measurements,and the bonding parameters of coal particles are determined.A numerical model of the screw drum coal loading process is established based on coal properties and the structural and material parameters of the screw drum.The simulation results are validated through industrial tests,and the number and velocity distribution of coal particles in different spatial regions within the enve-lope area of the screw drum are obtained.Results The relative error of coal loading efficiency between the DEM numerical simulation and industrial tests is approximately 4.3%,verifying the accuracy of the estab-lished numerical model.The simulation results show that during the cutting process,the number of coal par-ticles in Regions I and II(near the coal wall side within the screw drum envelope area)is significantly higher than that in Regions III and IV.In Regions I and II,most coal particles move axially outward along the drum under the action of the screw blade.A small increase in traction speed increases the x-and y-direction veloci-ties of coal particles in Region I,while the z-direction velocity changes from negative to positive;the traction speed has little effect on particle velocity in Region II.Increasing the rotational speed of the screw drum en-hances the ability of coal particles in Regions I and II to flow axially out of the envelope region.Conclusions The discrete element numerical calculation technology can accurately analyze the motion laws of coal particles in different regions within the screw drum envelope space,enabling efficient quantitative calculation of par-ticle motion parameters under various operating conditions.The research results provide a reliable numerical basis for the intelligent matching of shearer operating parameters.关键词
螺旋滚筒/装煤过程/离散元/数值计算/运动特性Key words
spiral drum/coal loading process/discrete element method/numerical calculation/motion char-acteristics分类
矿业与冶金引用本文复制引用
高珊,马联伟,田震,谢娟娟..基于离散元数值计算的螺旋滚筒装煤过程颗粒运动特性研究[J].河南理工大学学报（自然科学版）,2026,45(3):77-84,8.基金项目
国家自然科学基金资助项目(51674134) （51674134）
河南省科技研发计划联合基金项目(252103810103,252103810190) （252103810103,252103810190）
河南省高等学校重点科研项目(25A440008) （25A440008）
周口市重点科技攻关项目(ZKSKJGG2000132) （ZKSKJGG2000132）
