A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads  

作　　者：Ye Zhu Wei Sun Junzhou Huo Zhichao Meng 

机构地区：[1]School of Mechanical and Engineering,Dalian Jiaotong University,Dalin 116000,China [2]School of Mechanical and Engineering,Dalian University of Technology,Dalian 116000,China

出　　处：《Chinese Journal of Mechanical Engineering》2019年第6期72-84,共13页中国机械工程学报（英文版）

基　　金：Supported by National basic research program of China(973 Project,Grant No.2013CB035400);National Natural Science Foundation of China(Grant No.51375001);Major Projects of Liaoning Science and Technology Plan(Grant No.2015106016);Basic Research Project of Central University(Grant No.DUT16QY11)

摘　　要：The accurate performance evaluation of a cutterhead is essential to improving cutterhead structure design and predicting project cost. Through extensive research, this paper evaluates the performance of a tunnel boring machine(TBM) cutterhead for cutting ability and slagging ability. This paper propose cutting efficiency, stability, and continuity of slagging as the evaluation indexes of comprehensive cutterhead performance. On the basis of research of true TBM engineering applications, this paper proposes a calculation method for each index. A slagging efficiency index with a ratio of the maximum di erence between the slagging amount and average slagging is established. And a slagging stability index with a ratio of the maximum slagging fluctuation and average slagging is presented. Meanwhile, a cutting efficiency index by the weighed average value of multistage rock fragmentation of a cutter’s specific energy is established. The Robbins and China Railway Construction Corporation(CRCC) cutterheads are evaluated. The results show that under the same thrust and torque, the slagging stability of the CRCC scheme is worse, but the slagging continuity of the CRCC scheme is better. The cutting ability index shows that the CRCC cutterhead is more efficient.The accurate performance evaluation of a cutterhead is essential to improving cutterhead structure design and predicting project cost. Through extensive research, this paper evaluates the performance of a tunnel boring machine(TBM) cutterhead for cutting ability and slagging ability. This paper propose cutting efficiency, stability, and continuity of slagging as the evaluation indexes of comprehensive cutterhead performance. On the basis of research of true TBM engineering applications, this paper proposes a calculation method for each index. A slagging efficiency index with a ratio of the maximum di erence between the slagging amount and average slagging is established. And a slagging stability index with a ratio of the maximum slagging fluctuation and average slagging is presented. Meanwhile, a cutting efficiency index by the weighed average value of multistage rock fragmentation of a cutter’s specific energy is established. The Robbins and China Railway Construction Corporation(CRCC) cutterheads are evaluated. The results show that under the same thrust and torque, the slagging stability of the CRCC scheme is worse, but the slagging continuity of the CRCC scheme is better. The cutting ability index shows that the CRCC cutterhead is more efficient.

关 键 词：Evaluation of cutterhead Cutting ability Slagging ability Rock fragmentation load 

分 类 号：TV554[水利工程—水利水电工程]