铁道标准设计2016，Vol.60Issue(11)：90-95,6.DOI:10.13238/j.issn.1004-2954.2016.11.020
复杂工程条件下浅埋矩形大断面顶管关键技术与应用研究
Key Construction Technical Measures and Effect Analysis of Large Section Rectangular Pipe Pushing under Complex Geologic Conditions
金华 1马西峰 1赵立锋 1孙广臣2
作者信息
- 1. 南京地铁建设有限责任公司，南京 210000
- 2. 中南大学土木工程学院，长沙 410075
- 折叠
摘要
Abstract
Xinzhuang Station No. 3 entrance/exit passageway of Nanjing Metro Line 3 is constructed by means of large cross section rectangular pipe jacking and the complicated geological and environmental conditions made it very difficult. The pipe jacking construction section is located in silty clay, silt and alluvial-diluvial accumulating sand stratum with rich groundwater and high groundwater pressure, which is likely to hinder dumping or cause sand consolidation during tunneling and lead to high risk during pipe jacking at the entrance/exit of the tunnel. All these call for immediate protection of surrounding buildings, structures and pipelines and make it difficult to maintain normal traffic and result in extended pipeline moving. Through careful and rigorous investigation and analysis, a series of scientific and effective key technical measures are employed in the selection of pipe jacking machine, jacking parameters and posture controlling, sediment improvement, and environmental monitoring and other aspects as well. Furthermore, various engineering problems are solved to ensure project progress schedule.关键词
地铁/浅埋/富水软土地层/大断面矩形顶管/工程难点/技术措施Key words
Metro/Shallow covering/Rich water soft soil layer/Large section rectangular pipe jacking/Engineering problems/Technical measures分类
交通工程引用本文复制引用
金华,马西峰,赵立锋,孙广臣..复杂工程条件下浅埋矩形大断面顶管关键技术与应用研究[J].铁道标准设计,2016,60(11):90-95,6.
