中南大学学报（自然科学版）2024，Vol.55Issue(4)：1340-1350,11.DOI:10.11817/j.issn.1672-7207.2024.04.009
不同刃型TBM滚刀载荷与振动特性实验研究
Experimental study on load and vibration characteristics of TBM cutters with different cutter profiles
摘要
Abstract
The underground conditions of full-section tunnel boring machine(TBM)are complex,and the rock-breaking impact causes abnormal failure of the cutter and cutterhead easily,leading to significant economic loss.To investigate the impact of different cutterhead feed parameters and cutter cross-sectional geometry(i.e.,cutter profile)on cutter vibration,rock-breaking experiments were conducted to obtain cutter load and vibration signal.The results show that when the total thrust and rolling speed of the cutterhead increase,the amplitude of cutter vibration increases.Because thrust and speed increase the volume of rock broken per unit time in different ways,the storage-release process of rock strain energy is intensified and cutter vibration exacerbates.Different shaped cutters have different abilities to penetrate rock,which can change the rock broken volume per unit time and affect cutter vibration.Sudden changes of impact and load occur simultaneously.This is because the elastic strain energy accumulated in rocks is released intensively when rocks rupture.This study provides valuable guidance for choosing cutter types,developing new low-vibration cutter structures,and reducing cracking in cutters and cutterheads.关键词
全断面隧道掘进机/滚刀刃型/破岩实验/振动特性/进给参数Key words
TBM/cutter profile/rock-cutting experiment/vibration characteristics/feed parameter分类
机械制造引用本文复制引用
张皓诣,张蒙祺,莫继良,段文军,周仲荣..不同刃型TBM滚刀载荷与振动特性实验研究[J].中南大学学报（自然科学版）,2024,55(4):1340-1350,11.基金项目
国家自然科学基金资助项目(52005419) （52005419）
四川省自然科学基金资助项目(2023NSFSC0859)(Project(52005419)supported by the National Natural Science Foundation of China （2023NSFSC0859）
Project(2023NSFSC0859)supported by the Natural Science Foundation of Sichuan Province) （2023NSFSC0859）
