摘要
目前TBM与盾构机的单滚刀推力在工程上一般通过总推力除以滚刀数量计算其平均值来表示,此方法无法反映不同安装位置滚刀受力差异,也没有考虑到盾壳摩擦力、后配套拉力等因素对单滚刀推力的影响。为了准确测量滚刀的三向载荷,在穗莞深城际宝前区间采用的双模盾构机上搭载了课题组研发的滚刀载荷监测系统,系统实时采集了滚刀沿掌子面转动的滚刀载荷,并连续监测了超过50环的盾构掘进滚刀载荷,通过计算不同监测位置的滚刀载荷,验证了滚刀载荷监测系统的各项功能。结合掌子面素描,发现掌子面存在的节理及掉块等现象在实时滚刀载荷中有显著反映,滚刀经过节理区域时,正向力显著降低至50 k N以下。通过不同岩体条件下滚刀实测载荷与计算载荷的对比,验证了滚刀载荷监测系统的准确性与可靠性。系统监测结果可为滚刀与刀盘设计、掌子面岩体条件识别等提供依据。
At present,the thrust of Tunnel Boring Machine(TBM)and single disc cutter of the shield are generally calculated by dividing the total thrust by the number of cutterhead disc cutters in engineering.This method can't reflect the force difference of disc cutters at different installation positions,and doesn't take into account the influence of shield friction,rear supporting tension and other factors on the thrust of single disc cutter.In order to accurately measure the three-way load of the disc cutter,the disc cutter load monitoring system developed by the research group was installed on the dual-mode shield machine in the Baoqian section of the Suiguan-Shenzhen intercity.The system collected the disc cutter load rotating along the tunnel face in real time,and continuously monitored more than 50 rings of shield tunneling.The disc cutter load at different monitoring positions was calculated to verify the functions of the disc cutter load monitoring system.Combined with tunnel face mapping sheet,it is found that the joints and falling blocks on the working face have a significant reaction in the real-time disc cutter load.When the disc cutter passes through the joint area,the positive force is significantly reduced to below 50 kN.The accuracy and reliability of the disc cutter load monitoring system are verified by comparing the measured load with the calculated load of the disc cutter under different rock mass conditions.The results can provide a basis for the design of disc cutter and cutter head,and the identification of rock mass conditions on the working face.
作者
梁双川
韩北
龚秋明
刘东鑫
张宏伟
秦善良
曾煜
LIANG Shuangchuan;HAN Bei;GONG Qiuming;LIU Dongxin;ZHANG Hongwei;QIN Shanliang;ZENG Yu(Key Laboratory of Urban and Engineering Safety and Disaster Reduction,Ministry of Education,Beijing University of Technology,Beijing 100124,China;China Water Resources&Hydropower Seventh Engineering Bureau Co.,Ltd.,Chengdu 610213,China;Bejing Jiurui Technology Co.,Ltd.,Beijing 100085,China)
出处
《市政技术》
2025年第8期1-8,17,共9页
Journal of Municipal Technology
基金
北京市自然科学基金(8244045)。
关键词
滚刀载荷
监测系统
受力分析
现场验证
load of disc cutter
monitoring system
force analysis
field verification
