A Nonlinear Multi-Objective Optimal Design for Cutter Head of TBM

2011 ◽  
Vol 80-81 ◽  
pp. 1046-1050
Author(s):  
Jun Cheng ◽  
Ya Dong Gong ◽  
Hai Feng Zhao ◽  
Yue Ming Liu ◽  
Jian Yu Yang
Keyword(s):  
Tunnel Boring Machine ◽  
Optimized Design ◽  
Intelligent Algorithm ◽  
Multi Objective ◽  
Tunnel Boring ◽  
Cutter Wear ◽  
Complex Constraints ◽  
Set Up ◽  
Cutter Head ◽  
Novel Model

This paper presents a novel model of lay out of cutter head of TBM(tunnel boring machine). Rock-broken mechanism during the operation of the cutter head is analyzed to study the layout of cutters. A model of the cutters under the action of forces during TBM’s working has therefore been developed, thus proposing a scheme to improve the rock breakability of TBM’s cutter head on which the cutters are lay out. Then, a nonlinear multi-objective mathematical model with complex constraints is developed, with an optimization program provided via an intelligent algorithm for the layout design of cutters on the cutter head of a TBM. The cutter head of an EPB6.28 TBM, an optimized design is given to set up a prototype with digitized cutter head, to which a simulation is done for the verification of equilibrium of forces. Comparing analytically the cutter wear and equilibrium of forces between a previous and a newly designed cutter heads, the results shows digitally that the new one is more practicable than the previous one.

Study on Dynamic Performance of Cutter Head and Cutter System of Rock Tunneling Set-up

2011 ◽  
Vol 143-144 ◽  
pp. 512-516 ◽  
Author(s):  
Kai Rong Hong ◽  
Hai Jun Zhao ◽  
Jia Dong Chang ◽  
Hai Xia Wang ◽  
Kui Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Dynamic Performance ◽  
Tunnel Boring Machine ◽  
Element Model ◽  
Mode Analysis ◽  
Tunnel Boring ◽  
Low Energy Consumption ◽  
Free Mode ◽  
Set Up ◽  
Cutter Head

Several modals on Tunnel Boring Machine (TBM) in tunneling are introduced, the revolving rock tunneling simulator set-up is designed, the finite element model of cutter parts of the experimental bench is built, and free mode analysis of it is performed, and the model on system of cutter head, cutter and rock is established. It is shown that natural frequency on the cutter parts is higher, the frequency of first step is 4536Hz, and the most modes are deformations of the cutter loop, vibration acceleration of the cutter decreases with fracture tunnel width increasing, in some degree broken rock mechanics is achieved, foundation is provided for improving using life and adaptability of the cutter, and optimizing arrangement of plate cutter on the cutter head, and finally realizing high efficiency and low energy consumption.

Virtual Prototype of the Tunnel Boring Machine and Movement Simulation in DIVISION Mockup2000i2

2009 ◽  
Author(s):  
Lun Li ◽  
Zhili Zhou ◽  
Jishun Li ◽  
Yujun Xue
Keyword(s):  
Virtual Reality ◽  
Tunnel Boring Machine ◽  
Virtual Prototype ◽  
Screw Conveyor ◽  
Product Introduction ◽  
Software Environment ◽  
Tunnel Boring ◽  
Physical Prototype ◽  
Set Up ◽  
Movement Simulation

The virtual reality is a multi-functional, interactive and immersible technology. As an advanced engineering design technology, the virtual reality technology (VRT) has been widely used in large mining machinery design and manufacturing. The system is based on DIVISION Mockup2000i2 software. Virtual prototype of the Tunnel Boring Machine (TBM) is studied in this paper. In addition, the movement simulation of TBM is completed in DIVISION Mockup2000i2. Firstly, CATIA software is adopted to build the parts of TBM. The TBM is assembled in CATIA too. Secondly, the THEOREM software is applied to convert the assembled model of TBM to another format which can be identified in DIVISION MOCKUP2000i2 software. In order to make the TBM image living, life-like and easy to browse, the light of surface, virtual materials and landmark scenes are set up in DIVISION MOCKUP2000i2 software environment. All motion parameters of the parts are defined before the simulation. Then, the virtual movement simulation of TBM components is analyzed with the behaviors property of MOCKUP. The virtual movement of cutting wheel, screw conveyor machinery and the door of mud out are studied. The virtual movement of segments and segment erector machine are completed by setting up virtual parts and virtual event. Five segments are fixed accurately in a cycle. The relations and interference of the parts movement are examined simultaneity. The hotkey is defined before the simulation, which can trigger the continuous implementation of virtual motion. In addition, a virtual voice is used to enhance the performance of movement simulation. The virtual prototype of TBM being set up and simulated will have positive significance for design inspection, structural analysis and product introduction without TBM physical prototype being manufactured.

scholarly journals The multi-objective optimization of tunneling boring machine control based on geological conditions identification

2020 ◽  
Vol 1 (1) ◽  
pp. 87-105
Author(s):  
Hongyuan Wang ◽  
Jingcheng Wang
Keyword(s):  
Objective Function ◽  
Nearest Neighbor ◽  
Tunnel Boring Machine ◽  
Geological Condition ◽  
Content Type ◽  
Multi Objective ◽  
Tunnel Boring ◽  
Geological Conditions ◽  
Optimization Control ◽  
Accuracy Of Prediction

PurposeThe purpose of this paper aims to design an optimization control for tunnel boring machine (TBM) based on geological identification. For unknown geological condition, the authors need to identify them before further optimization. For fully considering multiple crucial performance of TBM, the authors establish an optimization problem for TBM so that it can be adapted to varying geology. That is, TBM can operate optimally under corresponding geology, which is called geology-adaptability.Design/methodology/approachThis paper adopted k-nearest neighbor (KNN) algorithm with modification to identify geological conditions. The modification includes adjustment of weights in voting procedure and similarity distance measurement, which at suitable for engineering and enhance accuracy of prediction. The authors also design several key performances of TBM during operation, and built a multi-objective function. Further, the multi-objective function has been transformed into a single objective function by weighted-combination. The reformulated optimization was solved by genetic algorithm in the end.FindingsThis paper provides a support for decision-making in TBM control. Through proposed optimization control, the advance speed of TBM has been enhanced dramatically in each geological condition, compared with the results before optimizing. Meanwhile, other performances are acceptable and the method is verified by in situ data.Originality/valueThis paper fulfills an optimization control of TBM considering several key performances during excavating. The optimization is conducted under different geological conditions so that TBM has geological-adaptability.

Multi-Objective Inversion Design of Cutting Head by Hard Rock Boring Machine Based on Fuzzy Theory and Genetic Algorithms

2011 ◽  
Vol 199-200 ◽  
pp. 1331-1334 ◽  
Author(s):  
Qiang Zhang ◽  
Qiu Shuang Song ◽  
Shou Ju Li ◽  
Ying Tian
Keyword(s):  
Tool Wear ◽  
Hard Rock ◽  
Design Method ◽  
Fuzzy Theory ◽  
Tunnel Boring Machine ◽  
Multi Objective ◽  
Tunnel Boring ◽  
Cutting Head ◽  
Lower Tool ◽  
Rock Tunnel

Along with the shearer's developed in the mining process, especially the rock tunnel boring roadway driving has become a major factor restricting the efficiency of coal, development of a suitable rock tunnel boring machine is very important, this paper use of rock excavation and after the release of stress concentration broken rock rolling theory, inverse problem approach using indirect parameters of the cutting head of, on the cutting head of the energy efficiency and the lowest maximum, minimum tool wear characteristics of multi-objective, were normalized, transformed into single objective problem, a genetic algorithm. The results showed that: the inversion of multi-objective design method is feasible to design a new type of driving hard rock cutting efficiency of institutions to provide 9%, compared with 20% reduction in energy consumption, lower tool wear 55.2% for the rock tunnel excavation needs.

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