基于数值模拟的盾构机滚刀仿真分析研究

Simulation Analysis of Shield Machine Hob Based on Numerical Simulation

摘要: 在盾构法隧道穿越工程中，盾构机刀具是保证盾构正常掘进的关键性控制部位，掌握盾构机刀盘、刀具设计理论，针对不同地质条件进行适应性改造，是亟待研究和解决的问题。金陵石化物料穿江工程南京盾构工程，最高水压达6.5 bar，水压之高国内罕见，隧道穿越地层主要为粉细砂层和中风化砂砾岩，极易造成刀具磨损。根据以往的刀具磨损数据和有限元数值建模分析，提出刀具配置的新思路，对盾构机刀具进行自主优化设计及适应性改造，并应用到工程实际，取得了良好的效果，顺利完成了隧道施工任务。

Abstract: In shield tunnel crossing engineering, shield machine tool was the key to ensure the normal con-trol part of shield tunneling, the understanding of the design theory of cutting pan and cutting tools of the shield machine, improving the adaptation to the different geological conditions, which were the problems needed to be solved urgently. In Jinling Petrochemical Material Engineering of Nanjing river crossing shield project, the highest pressure was up to 6.5 bar, the high pressure was rarely seen domestically, and the silty sand and moderately weathered gravel formations were mainly crossed in the tunneling, in which tool wearing was easily induced. According to the previous tool wear data and finite element numerical modeling analysis, a new idea of tool configuration is put forward, and the self-optimization design and adaptive modification of shield machine cutting tools are carried out and applied to engineering practice. Good results are obtained and the tunnel construction tasks are successfully completed.