Design And Research On Cutter Layout And The Structural Parameters Of The Cutterhead Optimization For TBM

Full-face Rock Tunnel Boring Machine (TBM) is a symbol of China's major equipment manufacturing industry products. TBM cutterhead design is the key to determine whether TBM efficient, reliable and stable tunneling. At present, China does not have the ability to independently design cutterhead. In order to break the blockade of foreign technology, the cutterhead designed to carry out research and development is imperative. This paper complex rock boundary conditions, the integrated use of rock mechanics, mechanical design, structural mechanics, optimal design theory and methods to study under the action of multiple cutter layout design optimization and optimization of structural parameters of the cutterhead design, development TBM cutter layout and structural design software.Through the numerical example to study the theory system of the cutter layout design and the TBM cutterhead structural parameter optimization.The main research content of the present paper includes following aspects: 1. The rock under cutter effect breaks mechanism and cutter force model: To study the mechanical properties of rock, rock damage and failure mechanism of the phenomenon of rock subtle statistical damage constitutive model, summed up the theory-based cutter force models, including the Iraqi Vance (Evans) prediction equation, autumn Mifuji Saburo prediction equation, F.F.Roxborough prediction equation, the Colorado School of Mines prediction equation and so on, based on experimental data fitting by the force model includes Rostami prediction equation. In order to cutter Layout optimization design tool force model provides a theoretical basis.2. Cutter layout optimization design: An integrated mechanism to consider breaking rock, construction parameters, and two kinds of typical geological conditions of rock, through access to domestic and foreign literature, as well as with the co-operation with a first-line engineering and technical experts to explore, given the general layout design needs cutter TBM to meet the technical requirements, and then in order to meet these technical requirements, the establishment of the whole TBM hob layout optimization model, given the whole TBM cutter layout rules and hob layout based on genetic algorithm design methods.3. Structural parameter optimization of cutter: To study the structural design of the cutter in the key technical issues, mainly including cutter layout, topology and supporting the topology and other issues. Based on the layout plan and hob cutter manufacturing and assembly process, etc., for cutter structural design, structural design to obtain a preliminary cutter programs and related technical performance parameters.4. Practical support software: Based on the rock crushing theory and engineering data, typical of rocks in a given boundary conditions, the development of TBM cutter layout and structural design software, to achieve cutter layout and structure of the initial schematic design, the output corresponding cutter layout program, the cutterhead structure of the initial program and related technical performance parameters.Cutter layout design and optimization of structural parameters calculate the final design is optimized to get a preliminary program design can not only solve the new problems to be given the recommendations of solutions can also be verified by a numerical comparison of existing cases and Optimization Project calculation of the TBM cutter related to technical performance parameters, thereby reducing the TBM cutter design cost, improve TBM cutter design efficiency.