INFLUENCE ANALYSIS OF ROCK MECHANICAL PARAMETERS ON THE TBM PENETRATING RATE

Civil Engineering Journal. 2019;2019(1):13-19 DOI 10.14311/CEJ.2019.01.0002

 

Journal Homepage

Journal Title: Civil Engineering Journal

ISSN: 1805-2576 (Online)

Publisher: Czech Technical University, Prague

Society/Institution: Czech Technical University in Prague, Faculty of Civil Engineering

LCC Subject Category: Technology: Engineering (General). Civil engineering (General)

Country of publisher: Czech Republic

Language of fulltext: Czech, English

Full-text formats available: PDF

 

AUTHORS

Jin Lu (1. Chengdu Aeronautic Polytechnic, Department of Civil Engineering, Chengdu, China)
Xiaofan Liao (2. Sichuan Electric Power Design and Consulting Co., Ltd., Chengdu, China)

EDITORIAL INFORMATION

Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 6 weeks

 

Abstract | Full Text

To study the influences of rock mechanical parameters on the penetrating rate of a tunnel boring machine (TBM), a 3D discrete element model, namely, 3D distinct element code (3DEC), was used to build simulated models on rock fragments using a TBM cutter based on the geological conditions of the west route of the South-to-North Water Transfer Project. The change rule of the TBM penetrating rate caused by different rock mechanical parameters was analyzed. The line graph of the relationship between the TBM penetrating rate and rock mechanical parameters was fitted using the least squares method. Results show that the TBM penetrating rate will decrease with an increase in uniaxial compressive strength and elastic modulus. By contrast, it will increase with an increase in rock Poisson’s ratio. This finding is in accordance with the result of the finished project. A numerical foundation was provided for the TBM tunneling of diversion tunnels in the west route of the South-to-North Water Transfer Project.