Authors:
Wu Li
1
;
Chen Long
2
and
Ju Ernan
3
Affiliations:
1
Dalialn Jiaotong University, China
;
2
Dalian Jiaotong University, China
;
3
Dalian Neusoft Information Institute, China
Keyword(s):
Spoke Cutterhead, Discrete Element, Soil Particles, Movement Rules, Epb Tunnelling.
Related
Ontology
Subjects/Areas/Topics:
Complex Systems Modeling and Simulation
;
Computer Simulation Techniques
;
Dynamical Systems Models and Methods
;
Formal Methods
;
Multiscale Simulation
;
Performance Analysis
;
Simulation and Modeling
;
Simulation Tools and Platforms
Abstract:
To discover the movement rules of soil particles around cutterhead during shield machine tunnelling, the discrete element model of shield machine tunnelling is established. The model is able to simulate the structure of shield machine, the pressure of ground, the excavation operation process and the flow process
of soils. The cutterhead torque is obtained by running the model, which is accord with the theoretical calculation results. The displacements of soil particles in the cutterhead system of shield machine at the different tunnelling time are displayed. The movement of soil particle is periodic, and the period is related to
the cutterhead rotation speed.