منابع مشابه
A Numerical Investigation of TBM Disc Cutter Life Prediction in Hard Rocks
There is a direct relationship between the efficiency of mechanized excavation in hard rocks and that of disc cutters. Disc cutter wear is an important effective factor involved in the functionality of tunnel boring machines. Replacement of disc cutters is a time-consuming and costly activity that can significantly reduce the TBM utilization and advance rate, and has a major effect on the total...
متن کاملNumerical Analysis of Dynamic Response Mechanism of Rock by TBM Disc Cutter
The dynamic response mechanism of the rock fragmentation and its influential factors by TBM disc cutter are studied in this paper. Firstly, a dynamic response model is established based on the fracture mechanics and finite element theory. Secondly, a fragmentation rule is founded according to the dynamic response model, and then numerical simulations for dynamic response of rock are carried out...
متن کاملHeat Conduction Model of TBM Disc Cutter Cutting Temperature and Its Solution
Disc cutter is Full face rock tunnel boring machine (TBM) important rock breaking tool, cutting heat generation has an important influence on cutter life, disc cutter cutting temperature characteristic research be imperative. Based on heat conduction theory to establish disc cutter cutting temperature heat conduction model, and derive its solution; analyze influence on disc cutter cutting tempe...
متن کاملDesign Optimization of TBM Disc Cutters for Different Geological Conditions
A novel optimization methodology for the disc cutter designs of tunnel boring machines (TBM) was presented. To fully understand the characteristics and performance of TBM cutters, a comprehensive list of performance parameters were investigated, including maximum equivalent stress and strain, specific energy and wear life which were closely related to the cutting forces and profile geometry of ...
متن کاملEngineering geological studies used for redesigning and employing a hard rock TBM in soft rock formations of Chamshir water conveyance tunnel
The Chamshir water conveyance tunnel (CWCT) with a length of 7.4 km and boring diameter of 5.3 m is excavated using a refurbished single shield TBM, initially designed to work in hard rock formations. This study focuses on engineering geological issues, which are important for checking the suitability of this machine and proposing required modifications for improving its performance in soft roc...
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ژورنال
عنوان ژورنال: Journal of MMIJ
سال: 2007
ISSN: 1881-6118,1884-0450
DOI: 10.2473/journalofmmij.123.467