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

被引：0
作者：
Quansheng Liu
Jianping Liu
Yucong Pan
Xiaoping Zhang
Xingxin Peng
Qiuming Gong
Lijie Du
机构：
[1] Chinese Academy of Sciences,State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics
[2] Wuhan University,Key Laboratory of Safety for Geotechnical and Structural Engineering of Hubei Province, School of Civil Engineering
[3] University of Chinese Academy of Sciences,Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education
[4] Beijing University of Technology,Key Laboratory of Structural Health Monitoring and Control of Hebei Province
[5] Shijiazhuang Tiedao University,undefined
来源：
Rock Mechanics and Rock Engineering | 2017年 / 50卷
关键词：
Tunnel boring machine (TBM); 20-in. disc cutter; Wear rule; Intact rock parameters; Cutter life; Prediction model;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：1303 / 1320
页数：17
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