盾构直削始发方案研究

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (3): 130-136.

盾构直削始发方案研究

温森^*1, 张国建¹, 刘俊杰², 孔庆梅¹

1.河南大学岩土与轨道交通工程研究所, 河南开封 475004;
2.河南林业职业学院, 河南洛阳 471002

收稿日期:2021-03-23 出版日期:2024-06-28 发布日期:2024-07-02
通讯作者: 温森(1981-),男,河南信阳人,博士,教授.Email:wsen919@126.com
基金资助:
河南省科技发展计划项目(242102320036),河南省高等学校青年骨干教师培养计划(2020GGJS035)

Research on schemes of shield direct cutting launching

WEN Sen¹, ZHANG Guo-jian¹, LIU Jun-jie², KONG Qing-mei¹

1. Institute of Geotechnical and Rail Transit Engineering, Henan University, Kaifeng 475004, China;
2. Henan Forestry Vocational College, Luoyang 471002, China

Received:2021-03-23 Online:2024-06-28 Published:2024-07-02

摘要/Abstract

摘要： 随着盾构施工工艺的发展,越来越多的工程开始采用盾构直削始发.盾构法施工中,始发是易发生事故的重要环节.相对于传统的人工凿除洞门,直削始发时刀盘直接切割洞门,避免了掌子面土体形成临空面,从而降低了施工风险.以郑州某地铁区间隧道工程盾构直削始发为例,采用Midas GTS NX有限元软件,考虑洞门破除及盾构动态掘进的影响,对盾构直削始发时围护结构变形、土体变形和周围管线变形等进行了计算分析,验证了盾构端头直削始发方案的合理性.为验证数值模拟的可靠性,将数值计算结果和现场监测结果进行了对比分析,对比结果显示二者的变化规律一致,表明数值模拟结果合理.

关键词: 直削始发, 盾构动态掘进, 变形分析, 监控量测

Abstract: With the development of shield construction technology, the use of shield direct cutting launching for tunnel initiation has become increasingly prevalent.In shield tunneling construction, the launching is an important link that is prone to accidents. Compared to traditional manual chiseling of the tunnel door, the cutting disc directly cuts the tunnel door during direct cutting launching, avoiding the occurrence of a free surface on the soil mass of the tunnel face, thereby reducing.Taking the subway shield tunnel engineering in Zhengzhou shield direct cutting launching as a case study, the finite element software Midas GTS NX was employed to the effects of the tunnel portal break and dynamic tunneling shield in retaining structure deformation, deformation of soil around the pipe deformation and so on, verifying the shield end cut the rationality of the initial solution. In order to verify the reliability of numerical simulation, a comparative analysis was conducted between the numerical calculation results and field monitoring data. The comparison showed consistent variation results, indicating that the results of numerical simulation are reasonable.

Key words: direct cutting launching, dynamic tunneling of shield, deformation analysis, monitoring measurement

中图分类号:

TU94

温森, 张国建, 刘俊杰, 孔庆梅. 盾构直削始发方案研究[J]. 兰州理工大学学报, 2024, 50(3): 130-136.

WEN Sen, ZHANG Guo-jian, LIU Jun-jie, KONG Qing-mei. Research on schemes of shield direct cutting launching[J]. Journal of Lanzhou University of Technology, 2024, 50(3): 130-136.

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