岩土力学Issue(5)：1449-1452,4.
土压平衡盾构反扭矩的分析和计算
Analysis and calculation of reverse torque of earth pressure balance shield
郭玉海 1王梦恕 1张照煌 2王磊1
作者信息
- 1. 北京交通大学 隧道及地下工程教育部工程研究中心，北京 100044
- 2. 华北电力大学 能源动力与机械工程学院，北京 102206
- 折叠
摘要
Abstract
Shield is a kind of underground construction machinery used to excavate soil tunnel with efficiency, environmental protection, safety and high quality, and it is employed widely in city metro construction in China. The origin driving of shield is one of the key techniques in shield construction. Through analyzing normal and origin driving shields, the mechanical model of shield driving in the two driving modes is established with reference to fundamental principles of soil mechanics. The calculation formula for resistance moment of the shield is presented, and the composition and effects of resistance moment of normal driving mode of shield are analyzed. It is discovered that in the normal driving mode, the resistance moment from the cave wall is strong enough to countervail the reverse torque resulted from the shield chisels’ cutting rock, and during the origin driving, protective measures should be taken in between shield cushion and its crust to prevent torsion. The formula has been adopted in some earth pressure balance (EPB) shield tunneling construction project with good results achieved. Conclusions can be referenced for the design and application of EPB shield.关键词
土压平衡盾构/阻滞力矩/防扭Key words
earth pressure balance (EPB) shield/resistance moment/anti-torsion分类
交通工程引用本文复制引用
郭玉海,王梦恕,张照煌,王磊..土压平衡盾构反扭矩的分析和计算[J].岩土力学,2013,(5):1449-1452,4.
