盾构法隧道掘进中盾尾密封涌水涌砂防治技术
Prevention and Control of Water and Sand Gushing at Shield Tail Seal during Shield Tunneling
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- DOI:
- 作者:
- 李胜新, 刘广仁, 张平
LI Sheng-xin, LIU Guang-ren, ZHANG Ping
- 作者单位:
- 中国石油天然气管道局第四工程公司,河北廊坊 065000
No.4 Construction Subsidiary Company of China Petroleum Pipeline Bureau, Langfang 065000, China
- 关键词:
- 盾构机;盾尾密封;密封刷;涌水涌砂;防治措施
sludge-water balanced shield tunneling machine;shield tail seal;seal brush;water and sand gushing;prevention and control measures
- 摘要:
- 在盾构法隧道穿越工程中,盾尾密封是保证盾构掘进隧道与掘进面完全隔离的关键性控制部位,一旦密封损坏,将会造成盾尾涌水涌砂,给掘进施工造成困难,甚至直接影响到人员、设备的安全。文章分析了以往盾构掘进中盾尾密封涌水涌砂的原因,针对地层松散、流动性强、强透水、高水压等情况,成功地摸索出一套行之有效的盾尾密封安装与施工技术。该技术在黄石长江盾构掘进中应用,有效地解决了盾尾密封涌水涌砂问题。
In the project of tunnel crossing Yangtze River at Huangshi by shield tunneling method, shield tail seal is an essential control part that guarantees the isolation between the tunnel and the heading face. Once the seal is damaged, water and sand gushing will occur and make tunneling construction very difficult, even affect safety of personnel and equipment. This paper analyzes in detail the reasons of water and sand gushing in shield tail based on the previous shield tunneling experience, brings forward a set of effective in- stallation and construction techniques of shield tail seal to solve tunnel crossing problems under the unfavor- able conditions such as ravel formation as well as high fluidity, permeability and water pressure. By taking a series of improving measures, the problem of water and sand gushing was successfully solved.2009,2(2): 79-80 收稿日期：2008-5-12分类号：U455.43作者简介：李胜新(1957-),男,上海人,高级工程师,1987年毕业于河北工学院,从事施工技术管理工作.