Cutters' layout method of tunnel boring machine cutter-head under mixed-face rock ground

被引:0
|
作者
Liu J.-Q. [1 ]
Xing Z.-H. [2 ]
Bin H.-C. [2 ]
Guo W. [2 ]
机构
[1] College of Mechanical Engineering, Tianjin University, Tianjin
[2] Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin
关键词
Cutters' layout; Mixed-face rock ground; Tunnel boring machine (TBM);
D O I
10.3785/j.issn.1008-973X.2019.01.018
中图分类号
学科分类号
摘要
The characteristics of unequal wear and uneven load of the cutter-head under mixed-face rock ground were analyzed in order to reduce the number of cutter changes and improve the construction efficiency of tunnel boring machine (TBM) in mixed-face rock ground. A design method of the cutters' diameter based on equal wear rate was proposed. The actual construction record data of TB880E driven in Qin-ling Mountains tunnel was taken as an example. Results showed that the variance of the equal wear rate was reduced by 10.45%. A new method of polar angle design with multi-helices partitioned was proposed based on the distribution characteristics of cutter load. Then the wear rate variance, overturning moment, unbalanced radial force and centroid deviation of several TBM cutter-heads which have different cutters' layout design, including random, constant helix and multi-helices were analyzed. Results show that eight helices layout design is a comprehensive optimal solution. © 2019, Zhejiang University Press. All right reserved.
引用
收藏
页码:166 / 173
页数:7
相关论文
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