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| 砂卵石地层浅埋暗挖法快速施工技术 | |
| 引用本文： | 刘魁刚,王文正,裴书锋. 砂卵石地层浅埋暗挖法快速施工技术[J]. 现代隧道技术, 2011, 48(5): 115-120 |
| 作者姓名： | 刘魁刚 王文正 裴书锋 |
| 作者单位： | 1. 北京市轨道交通建设管理有限公司,北京,100037 2. 北京市政建设集团有限责任公司,北京,100045 3. 北京交通大学土木建筑工程学院,北京,100044 |
| 摘 要： | 北京地铁四号线三期区间隧道穿越砂卵石地层,存在围岩易塌落、隧道底部起鼓和涌砂、顶板上方土体沉降,影响道路和桥梁安全等施工风险,并且不易钻孔注浆,工效较低。针对以上问题,改进了小导管设计参数和注浆参数,提出了砂卵石地层浅埋暗挖法"早封面、管细短、少扰动、快凝固、固拱脚、中拉槽"施工原则,施工效果较好,月进度达60~70 m。文章介绍了砂卵石地层台阶法施工工艺,提出了下台阶反核心土开挖,以及小导管注浆和锁脚锚管施工要点。 |
| 关 键 词： | 地铁隧道 砂卵石 浅埋暗挖法 施工技术 |
Rapid Construction Technology for a Shallow-buried Bored Tunnel in Sandy Pebble Stratum |
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| Liu Kuigang,Wang Wenzheng,Pei Shufeng. Rapid Construction Technology for a Shallow-buried Bored Tunnel in Sandy Pebble Stratum[J]. Modern Tunnelling Technology, 2011, 48(5): 115-120 | |
| Authors: | Liu Kuigang Wang Wenzheng Pei Shufeng |
| Affiliation: | Liu Kuigang1 Wang Wenzheng2 Pei Shufeng3(1 Beijing Rail Transit Construction Management Co.,Ltd,Beijing 100037,2 Beijing Municipal Construction Group Co.,Ltd.,Beijing 100045,3 Civil and Architectural Engineering Institute of Beijing Jiaotong University,Beijing 100044) |
| Abstract: | The running tunnel of phase three of the Beijing Subway Line 4 passes through a sandy pebble stratum,which creates construction risks of surrounding rock collapse,tunnel bottom swell,sand outflow and soil settlement above the roof.It also affects the road and bridge safety and results in difficult drilling and grouting.This paper addresses the optimization of the design and grouting parameters of small conduits and discusses the construction principles of early covering,fine short tube,less disturbance,quic... |
| Keywords: | Sandy pebble stratum Bored tunnel with shallow overburden Construction technology |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |