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A study on predicting the wear of TBM disc cutters using Cerchar testing by Mohammad-Hassan Rajati; Jamal Rostami; Hossein Memarian; Mohammad-Taghi Hamzaban is a Engineering article available to read on EtoBox.

What is A study on predicting the wear of TBM disc cutters using Cerchar testing about?

Estimating the disc cutter wear life or change time is a critical part of performance prediction for the application of hard rock TBMs. This paper examines the disc cutter wear rate and the number of required discs during the excavation of the Kanisib (or Zab) tunnel based on the transpositioning concept. The study covers the disc changes due to the normal wear process, leaving out those replaced due to mechanical/bearing failures. This study also analyzes TBM field performance and actual cutter consumption using a method, specific mass loss per volume (SMLV) excavated. SMLV considers the wear mass of a disc cutter relative to the disc cutters replacement for a given volume of excavated rock. Generally speaking, the disc SMLV incorporates critical parameters, and a formula is introduced to calculate it from the rock properties. The new model can be utilized for estimating disc life for any disc cutter size, diameter, and tip width. The predictive model developed in this study allows for estimating cutter life based on the location of disc cutters on the cutterhead. The proposed model uses rock mass parameter, namely the rock quality designation (RQD), and rock material parameters m

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Author

Mohammad-Hassan Rajati; Jamal Rostami; Hossein Memarian; Mohammad-Taghi Hamzaban

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)