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隧道建设(中英文) ›› 2022, Vol. 42 ›› Issue (S1): 493-499.DOI: 10.3973/j.issn.2096-4498.2022.S1.058

• 施工机械 • 上一篇    下一篇

穿越多种典型地层的超大直径泥水盾构选型研究——以芜湖长江隧道为例

王志成1, 王涵2   

  1. 1. 中铁十四局集团有限公司, 山东 济南 250014; 2. 山东大学齐鲁交通学院, 山东 济南 250012
  • 出版日期:2022-07-22 发布日期:2022-08-23
  • 作者简介:王志成(1968—),男,山东文登人,1992年毕业于石家庄铁道学院,起重运输与工程机械专业,本科,正高级工程师,现从事大直径盾构及地下工程施工技术和研究工作。Email: wangzhicheng1007@163.com。

Type Selection of SuperLargeDiameter Slurry Shield Tunneling through Various Typical Strata: a Case Study of Wuhu Yangtze River Tunnel

WANG Zhicheng1, WANG Han2   

  1. (1. China Railway 14th Bureau Group Corporation Limited, Jinan 250014, Shandong, China; 2. School of Qilu Transportation, Shandong University, Jinan 250012, Shandong, China)

  • Online:2022-07-22 Published:2022-08-23

摘要: 芜湖长江隧道项目的水文地质情况复杂,为解决超大直径泥水盾构在穿越粉细砂、黏土等土层,在高水压下长距离穿越泥质粉砂岩和石英砂岩等岩石地层时,刀盘刀具的适应性较差,使盾构施工效率低下的问题,以及盾构在穿越断层破碎带时发生泥浆滞排、堵舱、卡刀盘等问题,在盾构的选型设计阶段,通过缩短滚刀(齿刀)的间距、加强对压力舱的泥浆冲刷、增加泥浆直排模式等,提高盾构的适应性。与类似盾构施工项目相比,芜湖长江隧道项目盾构掘进效率提高了约15%,并极大地提高了盾构施工的安全性。

关键词: 盾构隧道, 超大直径泥水盾构, 断层破碎带, 刀盘破岩, 泥浆环流系统

Abstract: The hydrogeological conditions of Wuhu Yangtze river tunnel are complex. To improve the adaptability of cutterhead and cutters of superlargediameter slurry shield tunneling in silty fine sand, clay, and quartz sand strata under high water pressure, and further solve delayed mucking, chamber blocking, and cutterhead jam, techniques such as decreasing the disc cutter spacing, strengthening muck brushing in pressure chamber, and direct mucking are adopted in shield type selection and design stage. Compared with similar shield tunneling projects, the shield tunneling efficiency of Wuhu Yangtze river tunnel is increased by approximately 15%, greatly improving the safety of shield tunneling.

Key words: shield tunnel, superlargediameter slurry shield, fault fracture zone, rock breaking by cutterhead, slurry circulation system