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首页> 外文期刊>Rock Mechanics and Rock Engineering >A Wear Rule and Cutter Life Prediction Model of a 20-in. TBM Cutter for Granite: A Case Study of a Water Conveyance Tunnel in China
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A Wear Rule and Cutter Life Prediction Model of a 20-in. TBM Cutter for Granite: A Case Study of a Water Conveyance Tunnel in China

机译：20英寸的磨损规则和刀具寿命预测模型。 TBM Cutter for Granite：中国水输送隧道的案例研究

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摘要

Disc cutter wear is one of the comprehensive results of the rock-machine interaction in tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time-consuming and costly activity that can significantly reduce the TBM utilization (U) and advance rate (AR), and has a major effect on the total time and cost of TBM tunneling projects. Therefore, the importance of predicting the cutter life accurately can never be overemphasized. Most cutter wear prediction models are only suitable for 17-in. or smaller disc cutters. However, use of large-diameter disc cutters has been an irresistible trend for large-section hard rock TBMs. This study attempts to reveal the genuine wear rule of a 20-in. disc cutter and develop a new empirical model for predicting the cutter life in granite based on field data collected from a water conveyance tunnel constructed by the TBM tunneling method in China. The field data including the actual cutter wear and the geological parameters along the studied tunnel were compiled in a special database that was subjected to statistical analysis to reveal the genuine wear rule of a 20-in. disc cutter and develop the reasonable correlations between some common intact rock parameters and the disc cutter life. These equations were developed based on data from massive to very massive granite with a UCS range of 40-100 MPa, which can be applied for the assessment of the cutter life of a 20-in. disc cutter in similar hard rock projects with similar rock strengths and rock abrasivities.
机译：椎间盘刀磨损是隧道镗床（TBM）隧道摇滚机相互作用的综合结果之一。替换盘切割器是一种耗时和昂贵的活动，可以显着降低TBM利用率（U）和提前率（AR），并对TBM隧道项目的总时间和成本具有重大影响。因此，准确地预测刀具生命的重要性永远不会被赘长。大多数刀具磨损预测模型仅适用于17英寸。或较小的盘式刀具。然而，使用大直径椎间盘切割器是大截面硬岩TBMS的不可抗拒的趋势。这项研究试图揭示20英寸的真正磨损规则。圆盘切割机，发展新的田间数据预测花岗岩中刀具寿命的新型模型。包括实际刀具磨损的现场数据和沿着所学习的隧道的地质参数进行编制，在经过统计分析的特殊数据库中，揭示了20英寸的真正磨损规则。圆盘刀具和开发某些常见的完整岩石参数与盘式刀具寿命之间的合理相关性。这些方程基于大量到非常大量的花岗岩的数据开发，具有40-100MPa的UCS范围，可用于评估20英寸的刀具寿命。圆盘切割机在类似的硬岩项目，具有类似的岩石强度和岩石磨损。

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