TBM常截面盘形滚刀破岩过程受力研究  

Research on force of disc cutter during TBM rock breaking process

作　　者：李忠艳[1] 刘杨 张雯超 吴志强[1] 李瑞红[1] LI Zhongyan;LIU Yang;ZHANG Wenchao;WU Zhiqiang;LI Ruihong(School of Civil Engineering,Nantong Vocational University,Nantong 226007,China;Suzhou High-Tech Zone High-speed Railway Construction Development Co.,Ltd.,Suzhou 215011,China;School of Rail Transportation,Soochow University,Suzhou 215131,China)

机构地区：[1]南通职业大学建筑工程学院,江苏南通226007 [2]苏州高新区(虎丘区)铁路建设服务中心,江苏苏州215011 [3]苏州大学轨道交通学院,江苏苏州215131

出　　处：《人民长江》2025年第1期173-179,204,共8页Yangtze River

基　　金：江苏省基础研究计划(自然科学基金)项目(BK20210721)。

摘　　要：针对目前工程上常用的常截面盘形滚刀受力分析问题,应用有限元方法建立了滚刀破岩的三维旋转切割模型,模拟滚刀破岩过程。通过计算得出常截面盘形滚刀破岩时的切削力,并与实验数据和文献数据进行比较,结果表明模拟的滚刀切削力与实际情况较为吻合,验证了仿真模拟的可靠性。同时,滚刀破岩掘进试验结果表明,所测滚刀垂直力随时间变化曲线与仿真结果一致,呈波动特征,且滚刀切削力试验值与仿真数据误差较小。进一步将模拟数据与科罗拉多矿业大学(CSM)模型对比,发现整体结果较CSM模型值偏大,但与实验值更接近。通过对仿真模型岩石强度、掘进加载速率、刀刃宽度3个因素进行参数敏感性分析,得出在相同贯入度下,垂直力随上述因素的增大而提高,但掘进加载速率对垂直力的影响较小。相关成果可为TBM隧道的掘进设计与施工提供参考。Considering inadequacy of the traditional force models for commonly used constant-section disc cutters in engineering,a study was conducted to establish the rock-breaking force law for constant-section disc cutters to guide the design and construction of practical engineering projects.In this study,a three-dimensional rotational cutting model of disc cutters for rock breaking was developed using the finite element method to effectively simulate the rock-breaking process.By calculation,the cutting force of the constant-section disc cutter during rock breaking was obtained and compared with experimental and literature data.The results indicated a good agreement between the cutting force of the disc cutter and the actual situation,validating the reliability of the simulation.Rock-breaking excavation tests show that the measured normal force of the cutters varied with time,with fluctuating characteristics,which was consistent with the simulation results,at the same time the measured cutting force values deviated somewhat with simulated values.A comparison between the simulated values with the CSM model revealed that the overall results were slightly higher than those of the CSM model and closer to the experimental values.A parametric sensitivity analysis of the simulation model on rock strength,excavation loading rate,and blade width concluded that,under the same penetration depth,the normal force increased with the increase of the aforementioned factors,while the impact of the excavation loading rate on the normal force was relatively small.

关 键 词：滚刀破岩 切削力 有限元 掘进试验 CSM模型 

分 类 号：U455.3[建筑科学—桥梁与隧道工程]