均质地层中土压平衡盾构施工刀盘切削扭矩分析  

Cutting torque during tunnelling process of earth pressure balance shield machine in homogeneous ground

作　　者：徐前卫[1,2,3] 朱合华[2] 丁文其[2] 吴祥松[4] 于宁[5] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030 [2]同济大学岩土及地下工程教育部重点实验室,上海200092 [3]上海理工大学土木工程系,上海200093 [4]嘉兴学院,浙江嘉兴314001 [5]上海申通地铁集团有限公司,上海200010

出　　处：《岩土工程学报》2010年第1期47-54,共8页Chinese Journal of Geotechnical Engineering

基　　金：国家863计划项目(2006AA11Z102);第42批中国博士后基金项目;教育部岩土工程重点实验室(同济大学)开放基金项目;上海高校选拔培养优秀青年教师科研专项基金项目(21014)

摘　　要：在盾构的掘削过程中,刀盘切削矩是一个重要的施工参数,它不仅决定着施工的难易程度,而且还影响着盾构顶进推力、推进速度、刀盘转速、驱动功率等参数。应用数学和力学方法,从土压平衡盾构刀盘的切削工作机理入手,研究刀盘扭矩的计算方法及其影响因素;随后,开展了土压平衡盾构的掘削模型试验,研究在不同埋深、不同刀盘开口率、不同转速以及不同推进速度时刀盘扭矩的变化规律,对前述理论研究成果加以验证,并取得了较为满意的结果。The cutting torque is an important construction parameter during tunnelling process by use of shield machines. It not only determines the difficulty degree of construction but also influences other working parameters, such as thrust force, advancing speed, rotation speed and driving power. Based on the cutting mechanism of EPB shield machine, a new reasonable calculation model of cutting torque is presented by applying mathematical and mechanical theories, and its influence factors are then discussed. Subsequently, model experiments on the cutting torque during tunnel excavation with EPB shield machine under different conditions of buried depth, cutter head aperture ratio, rotation speed and advancing speed are carried out. The aforementioned theoretical studies are then verified, and satisfactory results are achieved.

关 键 词：土压平衡 盾构机:切削扭矩 模型试验 地下工程 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]