Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method

MO Zhen-ze; LI Hai-bo; ZHOU Qing-chun; HE En-guang; ZOU Fei; ZHU Xiao-ming; ZHAO Yu

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Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method

更新时间：2026-06-25

- Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method
- Vol. 33, Issue 4, (2012)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室,武汉,430071
  2. 北方重工集团全断面掘进机国家重点实验室,沈阳,110141
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU731.3
- Online First：26 April 2012，
  
  Published：2012
- 稿件说明：
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MO Zhen-ze, LI Hai-bo, ZHOU Qing-chun, et al. Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method[J]. 2012, 33(4).
DOI：

MO Zhen-ze, LI Hai-bo, ZHOU Qing-chun, et al. Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method[J]. 2012, 33(4). DOI：

摘要

现今全断面隧道掘进机（TBM）施工方法在长大深埋隧道工程中已被广泛采用，对滚刀破岩关键技术的进一步认识具有重要的工程价值。为了研究滚刀破岩机制，分析刀圈断面形态、岩石强度和节理角度对其的影响，运用UDEC方法建立了滚刀贯切岩石的二维数值系列模型，对TBM滚刀破岩过程进行了仿真。分析表明：滚刀破岩是滚刀下岩石拉破坏和剪破坏的综合反映，拉破坏是裂纹萌生与扩展的主要驱动机制；刃宽较大的平刀与刃角较大的楔刀破岩效果较好；平刀与楔刀在软岩中破岩效果相近，平刀在硬岩施工中比楔刀的破岩效果好；滚刀对节理角度为30°～60°的岩石破坏效果较好，由于楔刀的“劈裂”作用，楔刀比平刀更适合用于贯切含有节理的岩石。

Abstract

The full-face tunnel boring machine (TBM) has been widely used in projects nowadays; it is significant to understand the key technology of rock breaking by TBM disc cutters. In order to study the rock breaking mechanism and consider the effect of disc cutter rings’ cross-section shape

rock strength and joint orientation

we build a series of two-dimensional numerical models of rock broken by disc cutlers using UDEC method and simulate the process of rock fragmentation by TBM disc cutters. The case study and comparative analysis show that rock breaking mechanism is a composition of shear failure and tensile failure; tensile failure is the main reason for crack initiation and propagation. From the numerical results

it is also shown that wider flat cutters and blunter wedge cutters are good at breaking rock; and flat cutters is better than wedge cutters to break hard rocks

while they are same in soft rocks; and disc cutter is good at breaking the jointed rocks which have a joint angle between thirty degrees and sixty degrees; wedge cutter is better than flat cutter to penetrate jointed rocks due to its splitting effect.

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Related Institution

School of Civil Engineering and Architecture, Anhui University of Science and Technology

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

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上海核工程研究设计院

上海交通大学机械与动力工程学院

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