矿业科学学报2026，Vol.11Issue(3)：570-577,8.DOI:10.19606/j.cnki.jmst.2025096
基于DEM的全断面竖井掘进机岩渣运移动态演化模拟
Simulation of dynamic evolution of rock muck migration in full-section shaft boring machine based on DEM
摘要
Abstract
Aiming at the bottleneck of rock muck migration efficiency during construction by full-section shaft boring machines,this study establishes a numerical model based on the discrete element method to systematically investigate the dynamic influence of cutterhead cone angles on muck aggregation processes.Numerical models with varying cone angles(25°,30°,35°)were developed,and particle contact parameters were calibrated using field test data to achieve dynamic simulation of the entire muck migration process.The results indicate that when the cutterhead cone angle≥35°,self-organized mi-gration for rock muk driven by gravity can be achieved,leading to formation of distinct flow channels within 2 s and accumulation of nearly 90%of particles in the central zone by 50 s.At 30°,muck re-quires scraping forces from the rotating cutterhead are required to converge rock muk toward the center,while a 25° cone angle induces significant particle retention,necessitating auxiliary discharge devices.A complete muck discharge system model further demonstrates that,with the optimized 35° cone angle,a discharge efficiency of over 90%can be achieved,meeting the requirements for super-large-diameter shaft construction.This research provides theoretical guidance for cutterhead structural optimization in shaft boring machines.关键词
全断面竖井掘进机/离散元方法/岩渣运移/刀盘锥角/排渣效率Key words
full-section shaft boring machine/discrete element method/rock muck migration/cutter-head cone angle/discharge efficiency分类
矿业与冶金引用本文复制引用
王旭东,董俊亮,姚满,丁张飞,杨志江,商翔宇,朱彬..基于DEM的全断面竖井掘进机岩渣运移动态演化模拟[J].矿业科学学报,2026,11(3):570-577,8.基金项目
国家能源集团科技创新项目(GJNY-22-131) （GJNY-22-131）
