三模式掘进机全断面岩层段TBM模式施工技术研究
Tunneling Technology of Three-Mode Tunnel Boring Machine Under TBM Mode in Full-Section Hard Rock
谢文达 1梁红兵 1陈乔松 1郭永顺 2马经哲3
作者信息
- 1. 广州地铁工程咨询有限公司,广东 广州 510010
- 2. 广州地铁建设管理有限公司,广东 广州 510330
- 3. 中铁隧道集团三处有限公司,广东 广州 510530
- 折叠
摘要
为研究三模式掘进机使用TBM模式在全断面岩层中的施工技术,以广州地铁 7 号线二期萝岗站—水西站盾构区间工程为研究背景,分别从出渣方式、掘进参数控制、刀具管理和稳定器应用 4 个方面对三模式掘进机TBM模式施工技术进行总结.结果表明:1)本工程中三模式掘进机使用镶齿滚刀施工,相对光面滚刀的消耗更少,刀盘转矩更低;2)三模式掘进机TBM模式采用泥浆循环和螺旋输送机双通道出渣,可显著降低泥浆管堵塞的概率,提高出渣效率;3)三模式掘进机在前盾、中盾安装稳定器和撑靴,可保证全断面硬岩地层中掘进盾体不发生滚动,同时增强盾体稳定性;4)在全断面岩层中采用三模式掘进机TBM模式开挖隧道,刀盘转速为 3.0 r/min,总推力约 15 000 kN,转矩可控制在 1 300 kN·m,推进速度为 8～12 mm/min.
Abstract
In this study,a detailed analysis is conducted on the shield section project from Luogang station to Shuixi station of the Phase Ⅱ of the Guangzhou metro line 7.The tunneling technology employed by the three-mode tunnel boring machine in full-section hard rock under TBM mode is examined.Furthermore,various aspects,including mucking mode,driving parameter control,cutter management,and stabilizer application,are evaluated.Results reveal the following key points:(1)Using toothed disc cutters in the three-mode tunnel boring machine results in lower cutter consumption compared to smooth disc cutters,accompanied by reduced cutterhead torque.(2)The implementation of mud circulation and double-channel mucking via screw conveyors substantially minimizes mud pipe blockage issues and enhances mucking efficiency.(3)Strategically positioned stabilizers and grippers on the front and middle shields,respectively,ensure shield body stability during boring operations in hard rock strata.(4)Optimal operation parameters for tunneling in full-section hard rock strata include a cutterhead rotation speed of 3.0 r/min,total thrust force of 15 000 kN,thrust speed of 1 300 kN·m,and torque of 8-12 mm/min.
关键词
轨道交通/三模式掘进机/硬岩段/掘进效率/全断面岩层Key words
rail transit/three-mode tunnel boring machine/hard rock section/tunneling efficiency/full-section rock stratum引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据