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隧道建设(中英文) ›› 2026, Vol. 46 ›› Issue (2): 419-429.DOI: 10.3973/j.issn.2096-4498.2026.02.016

• 施工机械 • 上一篇    下一篇

大坡度变坡螺旋隧道TBM施工连续带式输送机出渣技术

吴凡1, 2, 齐梦学1, 2, 3, 雷升祥, 黄江帆1, 2, 宋洪蛟3, 张云童1, 2, 胡俊伟1, 2, 李举才3
  

  1. (1. 中铁十八局集团有限公司, 天津 300222; 2. 中铁十八局集团TBM技术发展研究院, 重庆 400700;3. 中铁十八局集团隧道工程有限公司, 重庆 400700; 4. 中国铁建股份有限公司, 北京 100855)
  • 出版日期:2026-02-20 发布日期:2026-02-20
  • 作者简介:吴凡(1996—),男,江苏连云港人,2021年毕业于西南交通大学,建筑与土木工程专业,硕士,工程师,现从事TBM施工技术与管理研究工作。 E-mail: 2537935221@qq.com。

Mucking for TBM Tunneling Using Continuous-Belt Conveyor Technology in Large-Slope Variable-Grade Spiral Tunnels

WU Fan1, 2, QI Mengxue1, 2, 3, LEI Shengxiang4, HUANG Jiangfan1, 2, SONG Hongjiao3, ZHANG Yuntong1, 2, HU Junwei1, 2, LI Jucai3   

  1. (1. China Railway 18th Bureau Group Co., Ltd., Tianjin 300222, China; 2. TBM Technology Development Research Institute, China Railway 18th Bureau Group, Chongqing 400700, China; 3. Tunnel Engineering Co., Ltd. of China Railway 18th Bureau Group, Chongqing 400700, China; 4. China Railway Construction Co., Ltd., Beijing 100855, China)
  • Online:2026-02-20 Published:2026-02-20

摘要: 为攻克大坡度变坡螺旋隧道TBM施工出渣技术难题,依托北山实验室螺旋斜坡道,通过理论分析、数值计算、厂内试验与工程验证相结合的方法,对连续带式输送机开展系统研究。该斜坡道工况复杂,最大坡度为10%、最小水平转弯半径为255 m、7次连续90°同向转弯。首先,从转弯能力、纵坡适应性、安全性、经济性等方面横向对比3种出渣方式; 其次,聚焦转弯段输送带单元受力特征,并依据力学平衡最小转弯半径计算公式,揭示输送带转弯机理,探究螺旋隧道中可提升连续带式输送机转弯能力的可调参数及可行措施; 再次,从连续带式输送机结构设计配置与使用方法出发,优化布置参数,同时开展托辊加密、自动纠偏、智能监控等技术措施研究; 最后,采用厂内试验验证连续带式输送机的转弯能力。结果表明: 1)螺旋隧道中连续带式输送机出渣适用性好,仅需解决转弯难题; 2)输送带转弯强影响因子为槽角、内曲线抬高角及张力; 3)通过优化分布式驱动、双储带仓、托辊槽角、可调吊链、托辊前倾安装等参数,可实现大坡度连续小转弯带式输送机持续出渣; 4)厂内试验及施工现场的平稳运行验证了连续带式输送机系统的可靠性。


关键词: 螺旋隧道, TBM出渣, 连续带式输送机, 内曲线抬高, 双储带仓

Abstract:

The spiral ramp at the Beishan laboratory features complex working conditions, including a maximum slope of 10%, a minimum horizontal turning radius of 255 m, and seven consecutive 90° turns in the same direction. To overcome the technical challenges of mucking when using a tunnel boring machine to bore large-slope variable-grade spiral tunnels, a systematic study of a continuous-belt conveyor is presented and integrates theoretical analysis, numerical calculation, factory tests, and engineering verification. First, three mucking methods are compared in terms of turning radius, longitudinal slope adaptability, safety, and economy, verifying the suitability of continuous-belt conveyors for mucking in spiral tunnels. Focusing on the force characteristics of conveyor-belt units in turning sections, the turning mechanism of conveyor belts is established based on the formula for the minimum turning radius derived from mechanical equilibrium. In addition, the adjustable parameters and feasible measures for improving the turning radius of continuous-belt conveyors in spiral tunnels are explored. Furthermore, based on the structural design configuration and operational methods of continuous-belt conveyors, the layout parameters, such as distributed drive, dual storage belt chambers, idler trough angle, adjustable hanging chains, and forward-inclined idler installation, are optimized, augmented by research into technical measures, including idler densification, automatic deviation correction, and intelligent monitoring. Finally, factory tests are conducted to verify the turning radius of continuous-belt conveyors. The research results lead to the following conclusions: (1) Continuous-belt conveyors are suitable for mucking in spiral tunnels, with attention to turning. (2) The key factors for conveyor-belt turning are trough angle, inner curve elevation angle, and tension. (3) Parameters such as distributed drive, dual storage belt chambers, idler trough angle, adjustable hanging chains, and forward-inclined idler installation are optimized, enabling continuous mucking by belt conveyors under largeslope and continuous small-radius turning conditions. (4) Stable operation in factory tests and at construction sites verifies the reliability of the continuous-belt conveyor system.

Key words: spiral tunnel, TBM mucking, continuous-belt conveyor, inner curve elevation, dual storage belt chambers