泥水平衡盾构刀盘扭矩计算及其影响因素分析  

Analysis of Cutterhead Torque Calculation and Its Influence Factors for Slurry Balance Shield

作　　者：杨志勇[1] 程学武[2] 江玉生[1] 

机构地区：[1]中国矿业大学(北京),北京100083 [2]北京铁路局地下直径线工程建设指挥部,北京100055

出　　处：《铁道工程学报》2016年第5期59-63,77,共6页Journal of Railway Engineering Society

基　　金：国家科技支撑计划子课题(2013BAB10B02-4);铁道部科技研究开发计划项目(2010G016-J)

摘　　要：研究目的:泥水平衡盾构刀盘扭矩是盾构设计的关键参数,为精确计算该扭矩值,结合泥水平衡盾构的特点,推导泥水平衡盾构刀盘扭矩计算公式,通过天津地下直径线工程和北京地下直径线工程中的刀盘扭矩实测值,对计算公式的准确性进行验证,并对泥水平衡盾构刀盘扭矩的组成和主要影响因素进行分析。研究结论:(1)刀盘正面摩阻扭矩所占总扭矩比重最大,达到60%以上,其次是刀盘背面摩阻扭矩和刀盘侧面摩阻扭矩,这三项占刀盘总扭矩的90%以上;(2)刀盘开口率每增加10%,刀盘扭矩约降低5%;(3)泥水压力每增加10%,刀盘扭约增加8%;(4)刀盘扭矩随刀盘直径的增大而增大,且扭矩增加量亦随刀盘直径的增大而增大;(5)刀盘扭矩随刀盘与土体间摩擦系数的增大而增大,两者相关性良好;(6)该研究结果可为泥水平衡盾构设计、施工阶段刀盘扭矩的精确预测和控制提供依据。Research purposes： Cutterhead torque of slurry balance shield is a key parameter in shield design.In order to the accurate calculation of slurry balanced cutterhead torque value,combing with the characteristics of the shield,this paper derived the cutterhead torque calculation formula for slurry balance shield,verified the correctness of the formula by cutterhead torque measured value of diameter line projects in Tianjin and Beijing,and analyzed cutterhead torque composition and main influence factors.Research conclusions：（1） Cutterhead positive friction torque,back torque and lateral friction resistance torque are the three important parts of total torque,they have at least 90% of total torque,and among which,positive friction torque has up to 60% of total torque.（2） When cutterhead opening rate increases 10%,cutterhead torque decreases about5%.（3） When slurry pressure increases 10%,cutterhead torque increases about 8%.（4） Cutterhead torque increases with the increasing of cutterhead diameters,and torque augmentation increases with the increasing of cutterhead diameters.（5） Cutterhead torque increases with the increasing of frictional coefficient between cutterhead and soil,they have good correlation.（6） This research result can be used in slurry balance shield torque prediction and control measures.

关 键 词：泥水平衡盾构 刀盘扭矩 影响因素 开口率 泥水压力 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]