A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Factors influencing performance of hard rock tunnel boring machines

Intact rock properties together with rock mass characteristics should be well investigated for selection of proper tunnel boring machine (TBM) for tunneling in various ground conditions. This is due to the significant impact of rock mass characteristics on machine performance. TBMs are site specific and designed for optimal performance in given ground conditions. When selected and put to work a...

متن کامل

Simulation Analysis of Rock Braking Mechanism of Tunnel Boring Machine

Original scientific paper Aiming at answering the questions of wear and failure of hob in the rock breaking process, the rock breaking process was simulated in different broken rock conditions by using finite element method. The relationship between normal force, lateral force, rolling force and time was obtained by rock breaking simulation analysis on the single edge disc cutter. The rock stre...

متن کامل

Simulation of tunnel boring machine utilization: A case study

Utilization is one of the main managerial factors that is applied for construction process analysis well. It directly affects the project duration and construction costs. Therefore, a utilization study in tunneling projects is essential. In this work, the utilization of an earth pressure balance Tunnel Boring Machine (TBM) in Tabriz urban railway project was studied using the Monte Carlo simula...

متن کامل

the reliability of a tunnel boring machine

greater levels of complexity in tunnelling with tunnel boring machine (tbm) allow higher chances of failures that may increase the potential hazardous risks. this paper presents the results of a study on tbm reliability using risk analysis. machinery failure mode and effect analysis was applied to analyze the risks of a tbm using qs9000 and sae.j1739 recommendations. for this purpose, 48 failur...

متن کامل

Designing a Comprehensive System Model to Evaluate the Performance of Iran Wrestling Board

 The aim of this study was to design a comprehensive system model to evaluate the performance of Iran wrestling board. The method of this study was descriptive and mixed that was conducted as a field. The statistical population consisted of the officials (chairman, vice-chairman and secretary) of the wrestling boards of Iran provinces, as well as the presidents of the wrestling federation, the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chinese Journal of Mechanical Engineering

سال: 2019

ISSN: 1000-9345,2192-8258

DOI: 10.1186/s10033-019-0410-2