Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical Simulation on Rock Cutter Performance in Mixed Ground
Tunnel boring machines (TBM) has been popularly used for rock tunnel constructions. It is of great importance to establish an accurate and reliable performance index of the disc cutters for the TBM, especially in complex ground conditions. The present study adopts smooth particle hydrodynamics (SPH) which is a virtual particle based meshfree method to evaluate the rock cutter performance in jointed and mixed media. The SPH method is capable of simulating rock crushing, rock fragmentation and chipping, etc., free of the mesh constraint of the traditional FEM and FDM models. A modified Drucker-Prager strength model for rock is developed. The nonlinear strength envelope of the developed model is generalized based on the widely accepted Hoek-Brown rock failure criterion. The performance of the rock cutters is evaluated in terms of rock strength index. The result will be useful for estimation of the attainable penetration rates and optimization of the cutters and overall TBM design.
Numerical Simulation on Rock Cutter Performance in Mixed Ground
Tunnel boring machines (TBM) has been popularly used for rock tunnel constructions. It is of great importance to establish an accurate and reliable performance index of the disc cutters for the TBM, especially in complex ground conditions. The present study adopts smooth particle hydrodynamics (SPH) which is a virtual particle based meshfree method to evaluate the rock cutter performance in jointed and mixed media. The SPH method is capable of simulating rock crushing, rock fragmentation and chipping, etc., free of the mesh constraint of the traditional FEM and FDM models. A modified Drucker-Prager strength model for rock is developed. The nonlinear strength envelope of the developed model is generalized based on the widely accepted Hoek-Brown rock failure criterion. The performance of the rock cutters is evaluated in terms of rock strength index. The result will be useful for estimation of the attainable penetration rates and optimization of the cutters and overall TBM design.
Numerical Simulation on Rock Cutter Performance in Mixed Ground
Dong, Aiai (Autor:in) / Ma, Guowei (Autor:in) / Gong, Qiuming (Autor:in) / Zhao, Jian (Autor:in)
GeoShanghai International Conference 2006 ; 2006 ; Shanghai, China
Soil and Rock Behavior and Modeling ; 199-204
12.05.2006
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Soils , Numerical models , Rocks , Simulation , Models , Boring , Tunnels
Numerical Simulation on Rock Cutter Performance in Mixed Ground
| British Library Conference Proceedings | 2006
| British Library Online Contents | 2018
Numerical Simulation for Rock Fracturing Process under Action of Disc Cutter
| Trans Tech Publications | 2013
Numerical simulation of rock breaking by TBM disc cutter in soil-rock composite formations
| Online Contents | 2022
Numerical Simulation of Rock Breaking by Disc Cutter of Tunnel Boring Machine
| Trans Tech Publications | 2014