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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (12): 1148-1152.DOI: 10.3973/j.issn.1672-741X.2014.12.006

• 研究与探索 • 上一篇    下一篇

废弃黏土在泥水盾构泥浆配制中的再利用研究

姜腾1, 姚占虎2, 闵凡路3   

  1. (1. 河海大学岩土工程研究所, 江苏 南京 210098; 2. 中交隧道工程局有限公司, 北京 100088; 3. 河海大学力学与材料学院, 江苏 南京 210098)
  • 收稿日期:2014-06-09 修回日期:2014-07-09 出版日期:2014-12-20 发布日期:2014-12-17
  • 作者简介:姜腾(1990—),男,湖北麻城人,河海大学岩土工程在读硕士,主要研究方向为盾构隧道设计与施工。
  • 基金资助:

    国家自然科学基金项目(51408191/51108156); 中国博士后科学基金资助项目(2014M560388); 江苏省博士后科研资助计划项目(1301031B)

Study on Cyclic Use of Waste Clay in Preparing Slurry for Slurry Shield Boring

JIANG Teng1, YAO Zhanhu2, MIN Fanlu3   

  1. ( 1. Geotechnical Research Institute of Hohai University, Nanjing 210098, Jiangsu, China; 2. CCCC Tunnel Engineering Company Limited, Beijing 100088, China; 3. College of Mechanics and Materials, Hohai University, Nanjing 210098, Jiangsu, China)
  • Received:2014-06-09 Revised:2014-07-09 Online:2014-12-20 Published:2014-12-17

摘要:

南京纬三路过江通道在竖井施工和盾构始发段掘进过程中产生了大量废弃的黏土,如何经济环保地处理废弃土成为工程面临的一大难题。工程盾构段约40%的地层是粉细砂地层,该地层对泥浆指标要求较低,考虑利用废弃黏土来配制掘进泥浆。采用填土、淤泥质粉质黏土、膨润土分别与泥浆增黏剂混合配浆,使用自制的泥浆渗透仪测定泥浆的滤失量和成膜质量,最后结合现场施工监测数据验证泥浆配比的可行性。结果表明,采用始发段废弃淤泥质粉质黏土配制的泥浆稳定性较好,形成的泥膜致密、泥浆失水量小,能够满足粉细砂地层的盾构掘进。

关键词: 南京纬三路过江通道, 废弃黏土, 粉细砂地层, 泥浆, 泥膜

Abstract:

The construction of the vertical shafts and the shield launching sections of Nanjing Weisanlu Yangtze River Crossing Tunnel produced a huge amount of waste clay. On the other hand, 40% of the shieldbored section of the mentioned tunnel is located in fine silty sand strata, which requires that the slurries to be used need not have high performance. As a result, the waste clay produced is reused to prepare slurries for slurry shield boring. The waste clay is mixed with fill, muddysilty clay and bentonite to prepare slurry. The filter loss and filter membrane quality of the slurry prepared are tested by means of selfmade slurry infiltration testing device. The mixing proportion of the slurry is verified by the site monitoring data. The study shows that the mentioned slurry with waste clay mixed has such advantages as good stability, compact filter membrane and low slurry loss, and it can meet the requirements of shield boring in fine silty sand strata.

Key words: Nanjing Weisanlu Yangtze River Crossing Tunnel, waste clay, fine silty sand strata, slurry, filter membrane

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