Mechanical Properties of Tunnel Boring Machine
Cutterhead Based on Continuously Variable Diameter

ZHANG Xiangfu, KE Wei, REN Xin, YUE Jinwen

doi:10.3973/j.issn.2096-4498.2021.S2.081

Tunnel Construction >

2021 , Vol. 41 >Issue S2: 634 - 641

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.S2.081

Mechanical Properties of Tunnel Boring Machine Cutterhead Based on Continuously Variable Diameter

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(1. Hunan Pingjiang Pumped Storage Corporation Limited, Yueyang 414000, Hunan, China; 2. China Railway Construction Heavy Industry Corporation Limited, Changsha 410100, Hunan, China)

Online published: 2022-03-18

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Abstract

There is a large range of crosssection diameter variation in pumped storage power stations and underground caverns, which cannot be effectively dealt with by conventional tunnel boring machine cutterhead. Accordingly, a continuously variable cutterhead diameter technology is developed. The mechanical properties of the cutterhead are analyzed and checked by theoretical calculation and finite element analysis. The results show that the maximum stress and deformation of the cutterhead with continuously variable diameter technology under typical working conditions do not exceed the yield stress and maximum deformation conditions, and has good mechanical properties. It is proved that the continuously variable diameter technology will not affect the overall structural strength of the cutterhead, and further engineering application verification research can be carried out.

Key words： tunnel boring machine; cutterhead; continuously variable diameter; mechanical properties

Cite this article

ZHANG Xiangfu, KE Wei, REN Xin, YUE Jinwen . Mechanical Properties of Tunnel Boring Machine Cutterhead Based on Continuously Variable Diameter[J]. Tunnel Construction, 2021 , 41(S2) : 634 -641 . DOI: 10.3973/j.issn.2096-4498.2021.S2.081

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