MatDEM-based study of disc cutter force model in open TBM tunnels: Incorporating installation radius and synergistic effects

IF 8.2 1区工程技术 Q1 ENGINEERING, CIVIL

Underground Space Pub Date : 2024-07-17 DOI:10.1016/j.undsp.2024.02.008

Yadong Xue , Lushan Shu , Lan Zhao , Wei Luo , Yongfa Guo

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引用次数: 0

Abstract

The prediction of rock cutting force is critical for tunnel boring machine performance and cutterhead design. This paper presents a novel model for rock cutting force prediction based on the Colorado School of Mines (CSM) model, which incorporates the installation position of disc cutters by introducing installation radius and synergistic effect factors. Linear cutting tests in the laboratory and large-scale rotary cutting simulations in MatDEM software were conducted to examine the impact of these factors. Results indicate that the normal and rolling forces increase and stabilize as the installation radius increases. The synergistic effect produces three force modes in a cutting circle, with mode α having the largest cutting force, mode β having a smaller force, and mode γ having the smallest force. The impact of installation radius and synergistic effect varies with rock-cutter parameters. Multiple regression analysis was used to determine the introduced factors. The proposed model was validated with rock strength and operation data from the Irtysh River conveyance project. The results demonstrate that the proposed model outperforms the CSM model in predicting cutting force in field conditions.

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基于 MatDEM 的开放式 TBM 隧道圆盘铣挖机受力模型研究：纳入安装半径和协同效应

岩石切割力的预测对于隧道掘进机的性能和刀盘设计至关重要。本文在科罗拉多矿业大学（CSM）模型的基础上提出了一种新的岩石切割力预测模型，该模型通过引入安装半径和协同效应因素，将圆盘铣挖机的安装位置纳入其中。为研究这些因素的影响，在实验室进行了线性切割试验，并在 MatDEM 软件中进行了大规模旋转切割模拟。结果表明，法向力和滚动力随着安装半径的增加而增加并趋于稳定。协同效应在切割圆中产生三种力模式，其中模式 α 的切割力最大，模式 β 的力较小，模式 γ 的力最小。安装半径和协同效应的影响随凿岩机参数的变化而变化。采用多元回归分析确定了引入的因素。利用额尔齐斯河输水工程的岩石强度和运行数据对提出的模型进行了验证。结果表明，在预测现场条件下的切削力方面，所提出的模型优于 CSM 模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Underground Space ENGINEERING, CIVIL-

CiteScore

10.20

自引率

14.10%

发文量

审稿时长

63 days

期刊介绍： Underground Space is an open access international journal without article processing charges (APC) committed to serving as a scientific forum for researchers and practitioners in the field of underground engineering. The journal welcomes manuscripts that deal with original theories, methods, technologies, and important applications throughout the life-cycle of underground projects, including planning, design, operation and maintenance, disaster prevention, and demolition. The journal is particularly interested in manuscripts related to the latest development of smart underground engineering from the perspectives of resilience, resources saving, environmental friendliness, humanity, and artificial intelligence. The manuscripts are expected to have significant innovation and potential impact in the field of underground engineering, and should have clear association with or application in underground projects.