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隧道建设(中英文) ›› 2006, Vol. 26 ›› Issue (6): 52-55.DOI: B

• 施工技术 • 上一篇    下一篇

软弱地层浅埋暗挖隧道管棚法钻孔技术

李永宝   

  1. 中铁隧道勘测设计院有限公司
  • 收稿日期:2006-06-29 出版日期:2006-12-20 发布日期:2009-12-11
  • 作者简介:李永宝(1980-)|男|内蒙古赤峰人|2006年毕业于长安大学公路与城市道路工程专业|大专学历|助理工程师。

Borehole Drilling Technology for Piperoof Reinforcement of
Shallowburied Tunnels in Soft Ground

LI Yong-Bao   

  1. China Railway Tunnel Survey &|Design Institute Co., Ltd.
  • Received:2006-06-29 Online:2006-12-20 Published:2009-12-11

摘要:

 针对目前国内软弱地层隧道施工中广泛采用的管棚超前支护辅助工法,从软弱地层水平钻孔的难度出发,分析了影响钻孔弯曲的三个主要因素,综合阐述了软弱地层浅埋暗挖施工中管棚法的水平钻孔技术,提出了水平钻孔的测斜、防斜和纠斜方法。并以南京地铁珠鼓区间大管棚施工实例为基础,说明了套管螺旋钻进工艺的应用效果。

关键词:  , 隧道 软弱地层 水平钻孔 测斜  , 防斜  , 纠斜

Abstract:

At present piperoof advance reinforcement is widely used in the construction of tunnels in soft ground. On basis of the difficulties in the drilling of the horizontal boreholes in soft ground, the author analyzes on the three factors that may result in deflection of boreholes, expatiates on the borehole drilling technology for the piperoof reinforcement of shallowburied tunnels in soft ground and provides the methods for the measurement, prevention and correction of the inclinations of the horizontal boreholes. Taking the construction of the piperoof reinforcement of the ZhuGu running tunnel of Nanjing Metro as example, the author also presents the results of the cased auger boring of the horizontal boreholes.

Key words: tunnel  , soft ground  , horizontal drilling inclination measurement  , inclination prevention  , inclination correction

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