Probabilistic model of disc-cutter wear in TBM construction:A case study of Chaoer to Xiliao water conveyance tunnel in China

作     者：YANG WenKun CHEN ZuYu WU GenSheng XING Hai YANG WenKun;CHEN ZuYu;WU GenSheng;XING Hai

作者机构：School of Civil EngineeringInstitute of Future Underground SpaceSoutheast UniversityNanjing 211189China Department of Geotechnical EngineeringChina Institute of Water Resources and Hydropower ResearchBeijing 100038China Sinohydro Bureau 6 Co.Ltd.Shenyang 110179China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2023年第66卷第12期

页      面：3534-3548页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.41831281,42220104007 and 52079150) the Basic Research Project of the China Institute of Water Resources and Hydropower Research (Grant No.GE0145B022021) the Core Research Project of Power Construction Corporation of China (Grant No.DJ-HXGG-2021-01) 

主　　题：tunnel boring machine disc-cutter wear wear rate probability model 

摘      要：Disc-cutters play a crucial role in the penetration process during construction using a tunnel boring machine(TBM).Their wear status has a significant impact on working efficiency and costs that accounts for a large part of the *** the wear pattern and characteristics of disc-cutters could provide a valuable guide for field maintenance and cutter replacement *** also provides insight into the wear mechanism of cutters at different positions for optimizing the disc-cutter arrangement *** this study,the cutter wears data of 34 disc-cutters over 643 days in the Chaoer River to Xiliao River water diversion tunnel was *** dataset contains 21862 manual readings measured from 1079 disc-cutters replaced in this *** raw data from the hard copy version was transformed into a digital twin database by eliminating abnormal data,filling in empty values,and performing linear *** has been found that the cutters can pass statistical testing for an exponential probability distribution function with respect to the wear rate(w).The regression ratios of R2are essentially greater than *** findings would help estimate the future service life of a currently working cutter,which means significant savings for the costly *** application of exponential distribution has the advantage of only one shape parameter,λ,whose reciprocal represents both the statistical mean and standard deviation of the wear *** is simple and practically amenable.A preliminary study was carried out to simulate the wear process between two neighboring cutters for drafting a replacement plan for disc-cutters by the Monte Carlo *** prediction results agreed reasonably well with the measured information.