Split type TBM cutterhead joint part characteristic reduced scale measurement method and system

Abstract

The invention discloses a split type TBM cutterhead joint part characteristic reduced scale measurement method and system, and the method comprises the steps: carrying out the modeling, and obtainingan original cutterhead model; simplifying the original cutterhead model to establish a cutterhead reduced scale simplified model, and establishing a reduced scale split type TBM cutterhead overall static stiffness model; obtaining the fractal dimension and the fractal roughness of the joint part according to a structure function method; obtaining the theoretical normal rigidity of the joint part according to the fractal dimension and the fractal roughness, calculating the theoretical tangential rigidity of the joint part through the theory, and further calculating to obtain the Poisson's ratio; measuring the test tangential rigidity and the test shear modulus of the joint part through a test, and correcting the elasticity modulus and the normal rigidity; carrying out fitting and error evaluation through a reduced-scale split type TBM cutter head overall static stiffness model, and inversing joint part characteristic parameters of an original cutter head. The method is convenient to operate, accurate in measurement, high in adaptability and low in measurement cost, and the characteristics of the joint surfaces of the split type TBM cutterheads of different structures are tested.

Description

technical field [0001] The invention relates to the technical fields of tunnel engineering and underground engineering, and in particular to a method and system for measuring the characteristics of a split-type TBM cutter head junction in scale. Background technique [0002] Full-face rock tunnel boring machine (TBM) is a major equipment widely used in the construction of hard rock tunnels such as subways, railways, water conservancy, and highways. , the level of its manufacturing capacity represents the overall technical level of a country's equipment manufacturing industry to a certain extent. The TBM excavation environment and equipment structure are extremely complex and have high technical content. The cutter head system is located at the front end of the TBM and is the core component of the TBM. The supporting hob is at the forefront of the roadheader and directly interacts with the surrounding rock boundary. It has the functions of breaking rock, stabilizing the tunn...

AI Technical Summary

Problems solved by technology

However, the device is too complex, poorly self-adaptive, and high in cost, and the method for measuring the coupling characteristics of the joint surface of the cutter head has not been elaborated.

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