盾构隧道掘进中盘形滚刀磨损机理及其施工优化方法  

Wear mechanism and construction optimization method of disc cutter in shield tunneling

作　　者：张鹏辉 雷军 彭斌 邝利军 杨子汉 于广明[1] ZHANG Penghui;LEI Jun;PENG Bin;KUANG Lijun;YANG Zihan;YU Guangming(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China;China Construction Fifth Engineering Bureau Co.Ltd.,Changsha 410000,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525 [2]中国建筑第五工程局有限公司,长沙410000

出　　处：《青岛理工大学学报》2023年第4期45-56,共12页Journal of Qingdao University of Technology

基　　金：国家自然科学基金资助项目(52171264)。

摘　　要：盾构机具有掘进速度快、安全高效等特点广泛应用于城市地下空间的建设中。盘形滚刀作为盾构机刀盘上破碎岩体的重要组成部分,在掘进过程中直接切削并破碎岩体,所以滚刀磨损是盾构机掘进施工中最常见且无法避免的难点问题。依据深圳城市轨道交通13号线掘进施工过程中刀具磨损情况的反馈信息,首先对盘形滚刀磨损形式进行了分类并加以统计,进而分析造成盘形滚刀不同磨损类型的机理。基于滑移线理论构建了盘形滚刀正常磨损的预测模型,并通过现场磨损数据验证了该预测模型的正确性和适用性。最终通过滚刀加固优化以及掘进参数优化等手段成功降低了滚刀的正常磨损和非正常磨损,取得了较好的现场效益。The shield machine has the characteristics of fast tunneling speed,safety and efficiency,and is widely used in the construction of urban underground space.As an important part of the shield machine cutter head,the disc cutter directly cuts and breaks the rock mass during the excavation process,so the wear of the cutter is the most common and unavoidable difficult problem in the shield machine excavation construction.Based on the feedback information of tool wear during the excavation construction of Shenzhen Urban Rail Transit Line 13,this paper first classifies and counts the wear forms of the shield machine disc cutter,and then analyzes the mechanism that causes different types of disc cutter wear.Based on the slip line theory,a prediction model for the normal wear of the disc cutter is constructed,and the correctness and applicability of the prediction model are verified by the on-site wear data.Finally,the normal wear and abnormal wear of the disc cutter are successfully reduced by means of tool shape parameter optimization,tunneling parameter optimization and cutter reinforcement optimization,and good on-site benefits are achieved.

关 键 词：盘形滚刀 磨损机理 磨损特征 滑移线理论 实例验证 

分 类 号：U458[建筑科学—桥梁与隧道工程]