Stability Analysis of Roadheaders - Avestia

2021-5-19  The stability state equations have been based on the calculation of three moment values of x, y, z directions and the sliding state of a roadheader as given in Fig. 1. The method is explained below: Calculate the moment values with respect to C point on the vertical y

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ROADHEADER PERFORMANCE PREDICTION

2018-6-28  ROADHEADER PERFORMANCE PREDICTION Assessment Of Rock Cuttability, And Prediction Of Roadheader Performance Dr. Bill Bamford University of Melbourne ... or design calculations. Rock properties are notoriously size-dependent, so there will inevitably be

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Intelligent design and simulation of roadheader cutting

2021-3-19  The design method of cutting head of roadheader was studied in this paper, and aimed at the deficiency of the ... Achieve the relevant calculation parameters of the cutting head of roadheader input directly in the interface of the system, and anti-call input the related parameters of cutting head in the ANSYS system, easy to operate.

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A model to predict the performance of roadheaders

2011-5-30  A brief background of methods for roadheader performance prediction Sandbak (1985) and Douglas (1985) used a rock classifi-cation system to explain the changes of roadheader advance rates at San Manuel Copper Mine in an inclined drift at an 11% grade4–5. Also, Bilgin et al. (2004) investigated the factors affecting the performance of a ...

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KODA - Roadheader

Survey system integration: design, setout, conformance - from the office to underground Deep integration with total station - allowing total station sharing with another roadheader or a rockbolter Option for detailed logging and intelligent analysis allows system to be more proactively managed and maintained

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Roadheader – A comprehensive review - ScienceDirect

2020-1-1  Roadheader design and implementation. The unique design and construction of the RH provides various advantages such as reduced directional constraints and thus flexibility to deal with cutting conditions with lowering, undercutting, lifting and arcing, without hampering operational stability.

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(PDF) Prediction of Wear of Roadheader Picks Using ...

The paper presents prediction of wear of roadheader picks using numerical simulations. Estimation of wear has been included into the numerical model of rock cutting based on the discrete element method. The amount of wear is calculated using the

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Multi-Objective Optimization Design for Cutting Head of ...

Compared with the original design, the two evaluation indexes decreased by 18,3 % and 5,5 % after optimization design separately, which improves the cutting performance of roadheader cutting head ...

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Prediction of Wear of Roadheader Picks Using Numerical ...

2008-2-14  Prediction of Wear of Roadheader Picks Using Numerical Simulations. Jerzy Rojek. Institute of Fundamental Technological Research, Swietokrzyska 21, 00‐049 Warsaw, Poland. ... The developed method can be employed in the design of cutting heads and cutting operations in underground excavations with roadheaders.

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Design and Analysis of Steering Gear and Intermediate ...

2021-6-4  Pinion and rack are same material and so pinion is weaker. So based design on pinion. Unknown diameter case . 1. Calculation of Diameter of teeth, Module selected from the standard module series. u D n m p p n (1) 2. Calculation of Torque (M. t) p D t M F u (2) 3. Calculation of pitch line velocity (V) The pitch line velocity can be calculated ...

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Analytical hierarchy process for selection of roadheaders

2009-8-26  The roadheader, which is one of the partial face excavation machines, is being used ... head design parameters may not be taken as a criterion. As the MADM are used, the criteria to be determined for ... The calculation of these criteria should be found assuming that different machines will cut in

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(PDF) Production estimating techniques for underground ...

The roadheader is a machine for excavating rock in mining and civil construction projects. It is a hybrid machine, with better manoeuvrability than that of tunnel boring machines.

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KODA - Roadheader

Survey system integration: design, setout, conformance - from the office to underground Deep integration with total station - allowing total station sharing with another roadheader or a rockbolter Option for detailed logging and intelligent analysis allows system to be

Get Price

A model to predict the performance of roadheaders

2011-5-30  A brief background of methods for roadheader performance prediction Sandbak (1985) and Douglas (1985) used a rock classifi-cation system to explain the changes of roadheader advance rates at San Manuel Copper Mine in an inclined drift at an 11% grade4–5. Also, Bilgin et al. (2004) investigated the factors affecting the performance of a ...

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(PDF) Design of Boom-Type Roadheader Remote Monitoring and ...

The host computer design When the roadheader is running, the driver is located in the Figure 9. The remote monitoring and control system applied on-site remote operating room. They need remote monitoring system allows to real-time monitoring of the roadheader

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Prediction of Wear of Roadheader Picks Using Numerical ...

2008-2-14  Prediction of Wear of Roadheader Picks Using Numerical Simulations. Jerzy Rojek. Institute of Fundamental Technological Research, Swietokrzyska 21, 00‐049 Warsaw, Poland. ... The developed method can be employed in the design of cutting heads and cutting operations in underground excavations with roadheaders.

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The effect of machine design parameters on the stability ...

The machine design parameters and cutting head design has an influence on stability of roadheader either [9] [10]. ... An Assessment of Stability Analysis of Roadheaders with Mini-disc Conference ...

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A Fuzzy AHP Approach to Select the Proper Roadheader

2015-1-22  proper roadheader through a fuzzy AHP solu-tion procedure. With that regard, Tabas coal mine is considered as case study. In the follow-ing sections, a description of study area is first-ly presented. In the next section, the concepts of Fuzzy sets and Fuzzy AHP are illustrated. Afterward, the procedure and calculations of

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Ventilation During the Construction Phase - Handbook of ...

2013-10-23  The chapter presents the design calculation possibilities of SIA 196 and explains their theoretical background. It also describes the ventilation for tunneling boring machines (TBM) drives and roadheader drives.

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Design and Analysis of Steering Gear and Intermediate ...

2021-6-4  Pinion and rack are same material and so pinion is weaker. So based design on pinion. Unknown diameter case . 1. Calculation of Diameter of teeth, Module selected from the standard module series. u D n m p p n (1) 2. Calculation of Torque (M. t) p D t M F u (2) 3. Calculation of pitch line velocity (V) The pitch line velocity can be calculated ...

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Analytical hierarchy process for selection of roadheaders

2009-8-26  The roadheader, which is one of the partial face excavation machines, is being used ... head design parameters may not be taken as a criterion. As the MADM are used, the criteria to be determined for ... The calculation of these criteria should be found assuming that different machines will cut in

Get Price

A model to predict the performance of roadheaders

2011-5-30  A brief background of methods for roadheader performance prediction Sandbak (1985) and Douglas (1985) used a rock classifi-cation system to explain the changes of roadheader advance rates at San Manuel Copper Mine in an inclined drift at an 11% grade4–5. Also, Bilgin et al. (2004) investigated the factors affecting the performance of a ...

Get Price

(PDF) PRODUCTION ESTIMATING TECHNIQUES FOR

Academia.edu is a platform for academics to share research papers.

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Topological Optimization for Pick Cutter of Roadheader ...

design, improvement and further research of pick cutter, and has a high guidance and practical value. Introduction Due to withstand impact loads, the pick cutter would be worn, chipping, lost teeth and fracture phenomena, and it will reduce the production efficiency of the roadheader

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TUnIS Navigation Roadheader - VMT GmbH

2020-6-5  The software design simplifies the storage of project-specific parameters in the system by specialist personnel. Adapta-tions necessary in the course of the project can likewise be easily made. Feature: processing of excavation data The positions of the cutterhead are captured and pro-cessed as a background 3D calculation function within

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Performance prediction of roadheaders using ensemble ...

2017-7-11  where SE opt is the optimum specific energy in kWh/m 3, k is the energy transfer coefficient and P is the cutting power of the roadheader or TBM in kW. They stated that k changes in 0.45–0.55 for roadheaders and in 0.85–0.9 for tunnel boring machines. SE can obtain small-scale or full-scale laboratory cutting test or indirect method given in the literature [3, 4] below:

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A Fuzzy AHP Approach to Select the Proper Roadheader

2015-1-22  proper roadheader through a fuzzy AHP solu-tion procedure. With that regard, Tabas coal mine is considered as case study. In the follow-ing sections, a description of study area is first-ly presented. In the next section, the concepts of Fuzzy sets and Fuzzy AHP are illustrated. Afterward, the procedure and calculations of

Get Price

Ventilation During the Construction Phase - Handbook of ...

2013-10-23  The chapter presents the design calculation possibilities of SIA 196 and explains their theoretical background. It also describes the ventilation for tunneling boring machines (TBM) drives and roadheader drives.

Get Price

Design and Analysis of Steering Gear and Intermediate ...

2021-6-4  Pinion and rack are same material and so pinion is weaker. So based design on pinion. Unknown diameter case . 1. Calculation of Diameter of teeth, Module selected from the standard module series. u D n m p p n (1) 2. Calculation of Torque (M. t) p D t M F u (2) 3. Calculation of pitch line velocity (V) The pitch line velocity can be calculated ...

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研究生导师简介 - sdust.edu.cn

2020-3-2  roadheader cutting load at different properties of coal and rock[J],The scientific world journal,Volume 2013,p1-8,2013(SCI) 7) Xueyi Li*, Yonggang Lv, Shucai Xu, Qingliang Zeng and Binbing Huang. Optimization design for roadheader cutting head

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