Abstract
A variety of theoretical or semi-empirical models have been proposed to predict the forces acting on the disc cutter and the wearing degree during TBM tunnelling. These models were developed based on different cutting scenarios with specified assumptions, which unavoidably have limitations. A series of full-scale rotary cutting tests on a circular specimen with an outer diameter of 3.3 m assembled from granite blocks collected from site were conducted in a multi-functional disc cutting platform. Different cutting parameters were considered, including different penetrations, rotatory speeds, and cutting radiuses. Variation of three orthogonal axial forces acting on the disc cutter during the experiments was obtained. The topology of cutting grooves was measured using the laser vision sensors, from which the information of specific energy was derived. The effectiveness of different theoretical models in predicting disc cutting behaviour was assessed by comparing the predicted force values with experimental data.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
