Determination method of cutterhead thickness of full-face tunnel boring machine

Abstract

The invention discloses a method for determining a cutter head thickness of a full face tunnel boring machine (TBM), belonging to the technical field of design of parts of a tunnel boring machine. According to the method for determining the cutter head thickness of the tunnel boring machine, the cutter head thickness is determined according to a theory of elastic mechanics by calculating deflection w(r, theta) of the TBM cutter head under the action of a transverse load q. Specifically, the bending deflection is only related to the cutter head radius and the cutter head thickness under the condition of TBM cutter head materials and a certain distributed load, while the cutter head radius is determined by a tunnel excavation radius. Therefore, the transverse bending deflection of the TBM cutter head is actually determined by the cutter head thickness. In order to enable the cutter head to be not subjected to the actions of transverse load and upsetting moment in the TBM tunneling process, disc cutters are symmetrically and uniformly arranged on the cutter head; and the bending deflection of the TBM cutter head is symmetrical around a cutter head axis under the load action of the disc cutters. According to the method disclosed by the invention, non-uniform deformation of the cutter head in the full face TBM construction process is reduced, the construction work cost is reduced, and the corresponding construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of design of excavating machine components, in particular to a method for determining the thickness of a full-section tunnel boring machine cutter head. Background technique [0002] The uneven deformation of the cutterhead of the full-face tunnel boring machine (collectively referred to as TBM for full-face rock boring machine and shield tunneling machine) not only generates vibration during the excavation operation, but also causes uneven force on the cutter head of the TBM, thereby increasing the consumption of the cutter It not only increases the construction cost of the full-face tunnel boring machine, but also prolongs the construction period. At present, there is no effective method to control the uniformity of the transverse bending deformation of the TBM cutter head. Contents of the invention [0003] The purpose of the present invention is to propose a method for determining the thickness of the...

AI Technical Summary

Problems solved by technology

[0002] The uneven deformation of the cutterhead of the full-face tunnel boring machine (collectively referred to as TBM for full-face rock boring machine and shield machine) not only generates vibration during the excavation process, but also causes uneven force on the cutter head of the TBM, thereby increasing the consumption of the cutter The inspection and replacement time of cutting tools not only increases the construction cost of the full-face tunnel boring machine, but also prolongs the construction period

At present, there is no effective method to control the uniformity of the lateral bending deformation of the TBM cutterhead.

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