矿井平煤层采煤机滚筒结构参数对装煤过程的影响研究

Study on the Influence of Structural Parameters of Coal Mining Drum on Coal Loading Process in Flat Coal Seam of Mine

在提出了一种在壁高不超过1.5 m的低长壁平煤层中进行采煤切削的工作建模方法。结合实际工程条件,分析了不同变量参数条件下采煤机结构和运动学参数对于煤流运动的影响程度,选择适当的运动学参数和结构避免采煤机装载煤炭至输送机上的过程中煤炭物料的卡涩,防止对采煤机滚筒造成破坏。采用离散元法对煤层进行了建模,并有效建立起由许多独立组件组成的物理开采系统。基于现有的理论模型,提出了采煤机模拟切煤过程的方法和算法。仿真结果表明,采煤机在平板轨道上工作时,呈向上角度采矿效果更佳,达到了提升装煤效率的目的。

A working modeling method for coal mining cutting in a low-length wall flat coal seam with wall height not exceeding 1.5 m is proposed.Combining with the actual engineering conditions,the degree of influence of the structure and kinematic parameters of the coal mining machine on the coal flow movement under different variable parameter conditions is analyzed,and appropriate kinematic parameters and structures are selected to avoid the jamming of coal materials during the process of loading coal from the coal mining machine to the conveyor and to prevent damage to the coal mining machine drum.The discrete element method was used to model the coal seam and effectively establish a physical mining system consisting of many independent components.Based on the existing theoretical model,a method and algorithm for simulating the coal cutting process by the coal miner are proposed.The simulation results show that the coal miner works better in an upward angle when working on a flat track,and achieves the purpose of improving the coal loading efficiency.