基于现场实测数据的盾构掘进速度影响因素与控制分析  

Analysis for Influence Factors and Control of Shield Advance Speed Based on Field Measurement Data

作　　者：胡光静 黄大维[2,3] 姜浩[2,3] 詹涛 袁岳峰 HU Guangjing;HUANG Dawei;JIANG Hao;ZHAN Tao;YUAN Yuefeng(China Railway Guangzhou Engineering Group Co.,Ltd.,Guangzhou 511457,Guangdong,China;State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,Jiangxi,China;Engineering Research Center of Railway Environmental Vibration and Noise,East China Jiaotong University,Nanchang 330013,Jiangxi,China;Metro Project Management Branch of Nanchang Rail Transit Group Co.,Ltd.,Nanchang 330038,Jiangxi,China)

机构地区：[1]中铁广州工程局集团有限公司,广东广州511457 [2]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,江西南昌330013 [3]华东交通大学铁路环境振动与噪声教育部工程研究中心,江西南昌330013 [4]南昌轨道交通集团有限公司地铁项目管理分公司,江西南昌330038

出　　处：《隧道建设（中英文）》2022年第S02期189-196,共8页Tunnel Construction

基　　金：国家自然科学基金项目(52078213);江西省杰出青年基金项目(20192ACBL21003)。

摘　　要：土压平衡盾构的掘进速度直接关系到盾构隧道施工效率,然而其影响因素复杂,且难以直接控制。为研究盾构掘进速度影响因素,探明盾构掘进速度与其影响因素的相互作用机制,结合理论分析与现场实测调研统计,分析盾构掘进速度与螺旋输送机转速和转矩、顶推力、刀盘转速和转矩的关系。结果表明:1)地层的强度特性在一定程度上决定了刀盘切削岩土体的难易程度,从而决定了盾构掘进速度;2)对于岩质地层和黏土地层,螺旋输送机转速、转矩和刀盘转矩与盾构掘进速度相关性显著;3)螺旋输送机通过转速影响渣土输出速率,从而影响土舱的饱满度,进而影响刀盘的切削效率,最终影响掘进速度;4)盾构刀盘转速总体呈现出“地层强度越高、刀盘转速越大”的特点;5)刀盘转矩随着刀盘转速的增加而显著减小,且刀盘转速增大对减小刀具的非正常破损有利。The advance speed of EPB shield is directly related to the shield tunneling efficiency.However,its influencing factors are complex and difficult to control directly.To study the influencing factors of advance speed and explore the interaction mechanism between advance speed and its influencing factors,theoretical analysis and field measurement results are combined,the relationship among the shield advance speed and screw conveyor rotation speed,screw conveyor torque,thrust force,cutterhead rotation speed,cutterhead torque are analyzed.The results show that:(1)The strength characteristics of stratum determine the difficulty of cutting rock and soil by cutterhead in some degree,thereby determines the advance speed.(2)For rock stratum and clay stratum,screw conveyor rotation speed and torque and cutterhead torque are significantly correlated with shield advance speed.(3)Screw conveyor affects the output rate of muck through the rotation speed,thereby affecting the fullness of soil cabin and the cutting efficiency of cutterhead,and finally affecting shield advance speed.(4)The cutterhead rotation speed generally shows that the higher the stratum strength,the faster the cutterhead rotation speed.(5)With the increase of cutterhead rotation speed,cutterhead torque decreases significantly,and the increase of cutterhead rotation speed is beneficial for reducing the abnormal wear damage of shield cutter.

关 键 词：土压平衡盾构 掘进速度 顶推力 螺旋输送机 刀盘转矩 刀盘转速 

分 类 号：U45[建筑科学—桥梁与隧道工程]