水下隧道复合地层超大直径泥水盾构刀盘刀具设计及应用实例  

Design and Application of Cutterhead and Cutting Tool for Super-Large Diameter Slurry Shields in Composite Strata of Underwater Tunnel

作　　者：王凯 曾垂刚 陈馈 陈瑞祥 周建军 秦银平 WANG Kai;ZENG Chuigang;CHEN Kui;CHEN Ruixiang;ZHOU Jianjun;QIN Yinping(State Key Laboratory of Shield Machine and Boring Technology,Zhengzhou 450001,China;China Railway Tunnel Group Co.,Ltd.,Guangzhou 511458,China)

机构地区：[1]隧道掘进机及智能运维全国重点实验室,郑州450001 [2]中铁隧道局集团有限公司,广州511458

出　　处：《铁道标准设计》2024年第11期141-148,共8页Railway Standard Design

基　　金：国家重点研发计划项目(2020YFB1709500)。

摘　　要：刀盘作为盾构关键系统之一,其对复合地层施工的超大直径盾构安全和效率影响很大。针对复合地层刀盘设计的问题,首先,对比常压刀盘和常规刀盘结构差异与适用的条件,总结刀盘刀具设计的一般性流程;其次,以某水下隧道盾构刀盘设计为例,进行刀盘选型与刀具布置、结构校核计算,并提出优化提升措施;最后,完成基岩突起地层盾构刀盘刀具配置并在工程中应用。研究与应用结果表明:(1)基岩段无辅助工法直接掘进通过时刀盘工作状态较好,说明实验与仿真结合的刀盘设计流程比较合理,刀盘选型及刀盘刀具设计方案可行;(2)刀盘结构在保证强度、刚度、振动性能指标的基础上,结合不良地质因素需重视磨损、泥饼等潜在问题,在刀盘设计阶段提出解决措施很有必要;(3)常压换刀装置配置磨损监测、温度传感器等单元,必要位置可增设载荷监测装置,提高刀具状态判识水平,有助于合理施工。The cutterhead serves as a critical component in shield machine,significantly influencing the safety and efficiency of the super-large diameter shield tunneling in composite strata.To address the challenges in cutterhead design for composite strata,this study first compared the structural differences and applicable conditions between atmospheric pressure cutterhead and conventional cutterhead,summarizing the general design process of cutterhead and cutting tools.A case study on the design of a shield machine cutterhead for an underwater tunnel was then presented,and the cutterhead selection,cutting tool arrangement,and structural verification calculations were performed,along with the proposed optimization measures for improvement.The configuration of the shield cutterhead and cutting tools in bedrock-protruding strata was completed and applied in practical tunnel projects.The research and application results showed that:(1)The cutterhead performed effectively when directly tunneling through bedrock sections without auxiliary methods,demonstrating that the design process combining experiments and simulations was reasonable,and the cutterhead selection and cutting tool design scheme were feasible.(2)While ensuring strength,stiffness,and vibration performance of the cutterhead structure,potential issues such as abrasion and mud cakes should be addressed during the cutterhead design stage due to adverse geological factors.(3)Atmospheric pressure tool changing devices were equipped with abrasive monitoring and temperature sensors,and load monitoring devices could be added at necessary locations to enhance the ability to assess cutting tool conditions,facilitating rational construction.

关 键 词：水下隧道 复合地层 超大直径泥水盾构 刀盘 刀具 设计 

分 类 号：U459.5[建筑科学—桥梁与隧道工程] U455.43[交通运输工程—道路与铁道工程]