reliability analysis of tbm disc cutters under different

Reliability analysis of TBM disc cutters under different

The reliability of disc cutters has a significant influence on the safety and working efficiency of tunnel boring machines (TBMs). To investigate the reliability of disc cutters under different geological and operational conditions, we conducted a series of novel rolling cutting tests on intact and jointed sandstone blocks using different dip angles and interlayers.

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reliability analysis of tbm disc cutters under different

Reliability analysis of TBM disc cutters under different

Reliability analysis of TBM disc cutters under different conditions. Author links open overlay panel Bolong Liu a Haiqing Yang a Shivakumar Karekal b

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(pdf) the reliability of a tunnel boring machine

(PDF) The Reliability of a Tunnel Boring Machine

Based on the soft ground/hard rock assumption of mixed-face conditions and the analysis of cutting force on each disc cutter and each drag bit, the time-varying excavation torque on the TBM

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design optimization of tbm disc cutters for different

Design Optimization of TBM Disc Cutters for Different

performances of the cutters under all geological conditions considered. Keywords Disc Cutter, Finite Element Method, Geological Condition, Structural Optimization, TBM 1. Introduction With the mushrooming of tunneling projects for underground space in China, the full face rock tunnel boring machine (TBM) has become more important. As the key component installed on the cutter head of

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the current state of disc cutter design and development

The Current State of Disc Cutter Design and Development

different size cutters are required for different size machines. For example, while 19 and 20-inch (483 and 508 mm) cutters are used on large diameter TBMs, it is impossible to employ cutters so large on a small micro-TBM. Also, the cutter must be designed for the specific geological conditions under which it will be operating. The disc cutter

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(pdf) factors influencing disc cutter wear

(PDF) Factors Influencing Disc Cutter Wear

To investigate the reliability of disc cutters under different geological and operational conditions, we conducted a series of novel rolling cutting tests on intact and jointed sandstone blocks

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underground space sciencedirect

Underground Space ScienceDirect

Reliability analysis of TBM disc cutters under different conditions Bolong Liu, Haiqing Yang, Shivakumar Karekal In Press, Journal Pre-proof, Available online 23 February 2020

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design optimization of tbm disc cutters for different

Design Optimization of TBM Disc Cutters for Different

Design Optimization of TBM Disc Cutters for Different Geological Conditions.pdf World Journal of Engineering an d Technology,201 5,3,218-231 Published Online November 2015 i n S ci R es.

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analysis of stress distribution of disc cutter under

Analysis of stress distribution of disc cutter under

(2018). Analysis of stress distribution of disc cutter under different tunnelling parameters. Australian Journal of Mechanical Engineering: Vol. 16, Selected papers from the 14th Global Congress on Manufacturing and Management 2018 (GCMM 2018), pp. 49-53.

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he wang's research works chongqing university,

He Wang's research works Chongqing University,

He Wang's 3 research works with 39 citations and 485 reads, including: Analysis on the damage behavior of mixed ground during TBM cutting process

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tbm disc cutters analysis

TBM Disc Cutters Analysis

2011-01-24· Linear cutting test with Tunnel boring machine (TBM) disc cutters, using adaptive DEM/FEM coupling. The simulation is done using DEMPack solver. More informa...

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the development of the tbm disc cutter test device

The Development of the TBM Disc Cutter Test Device

In order to study the disc cutter cutting performance and the cutters combination feature and to explore a new high-efficiency breaking method in hard rock environment, a new multifunction disc cutter test device plan is established and carried out based on the analysis of relevant research and test equipment at home and abroad. The test device consists of a vertical loading mechanism, a

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layout design for disc cutters based on analysis of tbm

Layout design for disc cutters based on analysis of TBM

2018-04-28· Exemplifying the MB264-311-8030 mm tape TBM cutter-head, the calculations show that compared with the original layout scheme, among the 51 disc cutters, the largest gap of the cutters’ assembled radiuses is only 25.8 mm, which is 0.64% of the cutter-head’s radius and is negligible. The cutter-head’s unbalanced radial force decreases by 62.41%, the overturning moment decreases by

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tbm excavation in dif˜ cult ground conditions

TBM Excavation in Dif˜ cult Ground Conditions

V-type disc cutters, excessive disc cutter consumption, the optimum selection of TBM type in complex geology, magmatic inclusions or ‘dykes’, the effect of blocky ground on TBM performance, the mechanism of rock rupture in front of TBMs, TBM face collapses and blockages, the effect of opening ratio in EPB-TBMs in fractured rock, squeezing

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tunnel boring machine linkedin slideshare

Tunnel boring machine LinkedIn SlideShare

2015-07-09· Construction of TBM A tunnel boring machine (TBM) consist of 1 or 2 shields (Large metal cylinders). At the end of shield, a cutting wheel is attached. Behind the cutting wheel, there is a chamber and inside it there is a set of hydraulic jacks which push the TBM forward. Behind the shield, at the finished part of the tunnel several support mechanisms such as control rooms, rails for dirt

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wear analysis of disc cutters of full face rock tunnel

Wear analysis of disc cutters of full face rock tunnel

2014-10-21· With reference to the installation and characteristics of disc cutters, those coefficients are modified according to penetration, which gives rise to the presentation of comprehensive axial wear coefficient, comprehensive radial wear coefficient and comprehensive trajectory wear coefficient. Calculation and determination of wear coefficients are made with consideration of data from a

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tbm disc cutters analysis (2)

TBM Disc Cutters Analysis (2)

2011-01-24· Linear cutting test with TBM disc cutters, using adaptive DEM/FEM coupling. The simulation is done using DEMPACK solver. Using GiD (gidhome) a...

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disc cutter scientific.net

Disc Cutter Scientific.Net

Analysis shows that the disc cutter can cut granite whose hardness is 106.2MPa, so the disc cutter can cut hard rock. The vertical force and rolling force agreed with common prediction formula of disc cutter forces which showed that modeling method is correct and feasible, this paper lays the foundation for the design and development of a cutting head of hard rock roadheader.

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disc cutters’ layout design of the full-face rock tunnel

Disc cutters’ layout design of the full-face rock tunnel

In rock TBM design the disc cutters’ layout design of the full-face rock tunnel boring machine (TBM) is one of the key technologies. However, there are few published papers in literatures for various reasons. In this paper, based on the engineering technical requirements and the corresponding cutter head’s structure design requirements, a nonlinear multi-objective disc cutters’ layout

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discrete/finite element modelling of rock cutting with a

Discrete/Finite Element Modelling of Rock Cutting with a

Discrete/Finite Element Modelling of Rock Cutting with a TBM Disc Cutter 3 eters (machine trust, penetration and rate of advance) and design of the cutter head design, including design of the disc cutters (Roby et al, 2008) and design of their layout (Huo et al, 2010). Historically, design of rock cutting tools for the excavation machinery has been based on a combination of the experience of

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application of tunnel boring machines in underground mine

Application of Tunnel Boring Machines in Underground Mine

and cutting tools for the rock and ground conditions to be encountered. In addition to geotechnical investigations and required rock testing, cutterhead design optimization is an integral part of the machine selection to ensure a successful application of the machines in a specific underground mine environment. This paper presents and discusses selected case histories of TBM applications in

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performance evaluation of hard rock tbms considering

Performance Evaluation of Hard Rock TBMs considering

Considering the varying cutter penetration and even the loss of contact between cutter and rock when cutter penetration is not positive or cutter moves away from rock under vibration conditions, disc cutter force in dynamic rock cutting process can be expressed through modifying the formula given in as with where is normal force, is rolling force, C is a constant equal to 2.12 according to

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tbm tool wear analysis for cutterhead configuration

TBM Tool Wear Analysis for Cutterhead Configuration

TBM Technology 1 139 clay, sand/gravel, and till, with special mentioning of till contacts. Case study project 1 includes an EPB TBM with ripper-type tools as primary cutting tools supple mented by disc cutters in gauge positions as well as scrapers. The tunnel alignment was excavated in clay and till. Significant differences in the tool wear

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the pennsylvania state university

The Pennsylvania State University

The Pennsylvania State University The Graduate School Department of Energy and Mineral Engineering STUDY OF UTILIZATION FACTOR AND ADVANCE RATE OF HARD ROCK TBMS A Dissertation in Energy and Mineral Engineering by Ebrahim Farrokh 2012 Ebrahim Farrokh Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy May 2013 . The

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a general overview on tunnel boring machines

A General Overview on Tunnel Boring Machines

A General Overview on Tunnel Boring Machines SRMEG-NCUS Seminar 31 January 2012 Professor Jian ZHAO Rock Mechanics & Tunnelling New Singapore MRT are in tunnels Conventional and TBM Tunnelling . 2 Fort Canning Tunnel by Conventional Method MRT Tunnel by TBM Conventional and TBM Tunnelling Tunnelling Excavate a tunnel using machines and/or explosives, and support the tunnel

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interfacial behavior in tunnel engineering

Interfacial Behavior in Tunnel Engineering

The interactive force between disc cutters and rock formation are the key parameter affecting adaptability, efficiency and boreability of a cutting head. Unfortunately, the mechanism affecting this interactive force is very complex. Experiments showed that the main factors affecting this interactive force may include the mechanics characteristic of the rock mass, the cutter spacing, the

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a smart disc cutter monitoring system using cutter

A Smart Disc Cutter Monitoring System Using Cutter

A Smart Disc Cutter Monitoring System Using Cutter Instrumentation Technology 111. Cutter speed measurements in Niagara were clearly correlated with the locations showing a decrease in speed from the gage toward the center. In Malaysia the cut-ter speed was fluctuating within 5 rpm and not enough data was available to analyze and smooth the data. Wear results were fluctuating within a

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analysis of thermal stress distribution of tbm disc cutter

Analysis of thermal stress distribution of TBM disc cutter

(2018). Analysis of thermal stress distribution of TBM disc cutter. Australian Journal of Mechanical Engineering: Vol. 16, Selected papers from the 14th Global Congress on Manufacturing and Management 2018 (GCMM 2018), pp. 43-48.

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不同地质工况条件下tbm刀具破岩模式研究-《哈尔滨工程大学学

不同地质工况条件下TBM刀具破岩模式研究-《哈尔滨工程大学学

[15] 马洪素, 纪洪广. 节理倾向对TBM滚刀破岩模式及掘进速率影响的试验研究[J]. 岩石力学与工程学报, 2011, 30(1):155-163. MA Hongsu, JI Hongguang. Experimental study of the effect of joint orientation on fragmentation modes and penetration rate under TBM disc cutters[J]. Chinese Journal of Rock Mechanics and

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analysis on the rock-cutter interaction mechanism

Analysis on the Rock-Cutter Interaction Mechanism

The circular path adopted herein, which is the actual running path of the TBM disc cutter, shows that the lateral force of the disc cutter is asymmetric. The lateral forces on the sides of the disc cutter are clearly different. However, traditional solutions are obtained by assuming a linear path, where the later forces are viewed as equal. To simulate the interaction between the rock and disc

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reliability analysis of tbm disc cutters under different

Reliability analysis of TBM disc cutters under different

The reliability of disc cutters has a significant influence on the safety and working efficiency of tunnel boring machines (TBMs). To investigate the reliability of disc cutters under different geological and operational conditions, we conducted a series of novel rolling cutting tests on intact and jointed sandstone blocks using different dip angles and interlayers.

Get Price
reliability analysis of tbm disc cutters under different

Reliability analysis of TBM disc cutters under different

The reliability of disc cutters has a significant influence on the safety and working efficiency of tunnel boring machines (TBMs). To investigate the reliability of disc cutters under different ...

Get Price
underground space | sciencedirect.com

Underground Space | ScienceDirect.com

Reliability analysis of TBM disc cutters under different conditions Bolong Liu, Haiqing Yang, Shivakumar Karekal In Press, Journal Pre-proof, Available online 23 February 2020

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wear analysis of disc cutters of full face rock tunnel

Wear Analysis of Disc Cutters of Full Face Rock Tunnel

The reliability of disc cutters has a significant influence on the safety and working efficiency of tunnel boring machines (TBMs). To investigate the reliability of disc cutters under different ...

Get Price
the current state of disc cutter design and development

The Current State of Disc Cutter Design and Development

different size cutters are required for different size machines. For example, while 19 and 20-inch (483 and 508 mm) cutters are used on large diameter TBMs, it is impossible to employ cutters so large on a small micro-TBM. Also, the cutter must be designed for the specific geological conditions under which it will be operating. The disc cutter ...

Get Price
analysis on the stress and failures of disc cutter of full

Analysis on the Stress and Failures of Disc Cutter of Full

Full face rock tunnel boring machine (TBM) plays an important role in boring rock of tunnel. The failure of disc cutter is the main reason leading to low efficiency of TBM. In this paper, analysis of force and motion for disc cutter are carried by using ABAQUS to study stress distribution and concentration in disc cutter and rocks. Influence of different rocks on stress in disc cutter is analyzed.

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performance prediction of hard rock tbm using ... - scinapse

Performance prediction of hard rock TBM using ... - Scinapse

To investigate the reliability of disc cutters under different geological and operational conditions, we conducted a series of novel rolling cutting tests on intact and jointed sandstone blocks using different dip angles and interlayers. Different normal forces and rotational speeds of the cutterhead were also applied during the experiment.

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multidisciplinary design optimization of tunnel boring

Multidisciplinary design optimization of tunnel boring

Abstract ATunnel Boring Machine (TBM) is an extremely large and complex engineering machine that usually works under a complicated geological environment to excavate tun-nel underground. Considering the large number of sub-systems that usually belong to different disciplines, it is a challenging task to define, model, and optimize the whole

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design optimization of tbm disc cutters for different

Design Optimization of TBM Disc Cutters for Different

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 ...

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study on the optimum penetration depth by two tbm cutters

Study on the optimum penetration depth by two TBM cutters

This paper investigates the optimum penetration depth and the synergistic effect of TBM (Tunnel Boring Machine) rock breaking under the different cutter spacings. Indentation tests, using two TBM cutters, were conducted on sandstone specimens based on an improved uniaxial testing. Afterwards, morphological measurement was performed to analyze the change of the groove volume, using a surface ...

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