深埋斜井隧道双模式盾构刀盘驱动扭矩分析  

Analysis of the Cutterhead Driving Torque of a Dual-Mode Shield Used for a Deeply Buried Inclined Shaft

作　　者：管会生[1] 吴和北[1] 陶伟[1] 杨延栋[1] 

机构地区：[1]西南交通大学机械工程学院,成都610031

出　　处：《现代隧道技术》2015年第6期163-169,183,共8页Modern Tunnelling Technology

基　　金：国家科技支撑计划(2013BAB10B01)

摘　　要：刀盘驱动扭矩是盾构机的关键参数,是盾构设计的重点内容之一,同时也是隧道顺利掘进的重要保障。文章针对神华新街台格庙矿区煤矿斜井工程,分析了隧道埋深和坡度对盾构刀盘驱动扭矩的影响;在现有扭矩计算理论的基础上,建立了盾构在高埋深、下坡掘进时的刀盘驱动扭矩的计算理论模型;结合工程实例,对不同埋深下斜井双模式盾构的扭矩进行了计算分析,同时对设备制造商提供的扭矩参数进行了合理性验证。结果表明:在土压平衡模式下,刀盘驱动扭矩随隧道坡度的增大明显增大,随埋深的变化先增大后趋于稳定;而在开式单护盾掘进模式下,隧道坡度和埋深的变化对刀盘驱动扭矩的影响较小。两种模式下稳定后的刀盘驱动扭矩分别为8 000 k N·m和2 000 k N·m,与盾构设备的实际参数设定值接近。As a key parameter, the driving torque of the cutterhead is an important component in shield design and helps guarantee smooth tunnelling. In light of the inclined shaft project of the Xinjie Taigemiao mine, the effect of tunnel depth and gradient on the driving torque of a shield cutterbead was analyzed. Based on existing torque calculation theory, a calculation theory model of cutterhead driving torque was established for downhill shield tunneling of deeply buried shafts. Then, using project examples, the rationality of torque parameters given by the manufacturer was verified by calculating and analyzing the torque of a dual-mode shield used in inclined shafts of different depths. Consequently, the results show that： in EPB mode the torque of the cutterhead increases with the increase of the gradient, and it increases with the variation of depth at first and then inclines to be stable; and in open-TBM mode the variation of tunnel depth and gradient has fewer effects on the driving torque of the cutterhead. The driving torques of the cutterhead are 8 000 kN·m and 2 000kN·m, respectively, under above two modes after stabilizing, which is close to the pre-set actual parameters of the shield machine.

关 键 词：双模式盾构 刀盘驱动扭矩 埋深 隧道坡度 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]