起伏基岩地层盾构姿态控制及刀具配置分析

发布时间：2018-04-10 07:35

本文选题：起伏基岩地层　切入点：盾构掘进　出处：《隧道建设》2017年S1期

【摘要】：为了解决在起伏基岩地层中盾构掘进姿态控制困难及刀盘不均匀消耗问题,以长沙地铁2号线西延线盾构区间为工程实例,通过对现场油缸推力关系统计分析,得出盾构区间直线段和曲线段地层由软至硬和由硬至软的合理的油缸推力比,并应用于工程实际,得出相应的直线段和曲线段的水平、竖向偏差且均满足轴线偏差不超过50 mm的标准要求。同时,通过对现场每百米刀具更换情况统计分析,得出合理的刀具改良配置建议。
[Abstract]:In order to solve the problem of difficult attitude control of shield tunneling and uneven consumption of cutter head in undulating bedrock strata, taking the shield section of west extension line of Changsha Metro Line 2 as an engineering example, this paper analyzes the thrust relationship of oil cylinder on the spot.The reasonable cylinder thrust ratio from soft to hard and from hard to soft in the straight and curve sections of shield tunneling is obtained, and applied to engineering practice, the corresponding level of straight line and curve section is obtained.Vertical deviation and meet the axis deviation of not more than 50 mm standard requirements.At the same time, through the statistical analysis of the change of cutting tools per 100 meters, the reasonable tool configuration suggestion is obtained.
【作者单位】：中国铁路经济规划研究院;西南交通大学交通隧道工程教育部重点实验室;
【分类号】：U455.43

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