| 浅覆土大粒径无水砂卵石地层盾构施工技术 |
| |
| 引用本文： | 孙立建.浅覆土大粒径无水砂卵石地层盾构施工技术[J].铁道建筑技术,2014(9):69-76. |
| |
| 作者姓名： | 孙立建 |
| |
| 作者单位： | 中铁十四局集团有限公司,济南250014 |
| |
| 摘 要： | 直径6 m的盾构隧道已开始应用于北京电缆隧道。为确保盾构在浅覆土大粒径无水砂卵石地层中顺利掘进,采取了以下措施:渣土改良、加大同步和二次注浆量、优化掘进参数、优化刀盘布局和刀具等。通过试验结合现场的方法,保证盾构通过后地面沉降控制在规范要求之内。
|
| 关 键 词： | 盾构 浅覆土 大粒径 砂卵石 掘进 改良 沉降 |
Shield Construction Technology in the Shallow Burial Large Size Waterless Sandy Cobble Stratum |
| |
| Sun Lijian.Shield Construction Technology in the Shallow Burial Large Size Waterless Sandy Cobble Stratum[J].Railway Construction Technology,2014(9):69-76. |
| |
| Authors: | Sun Lijian |
| |
| Institution: | Sun Lijian (China Railway 14^th Bureau Group Co. Ltd. , Ji＇ nan 250014, China) |
| |
| Abstract: | Shield tunnel with a diameter of 6 m has been applied in Beijing cable tunnel.To make the shield drive smooth-ly in the stratum of shallow overburden large size waterless sandy cobble,the following measures should be taken：impro-ving the muck,increasing the synchronous and two grouting amount,optimizing the boring parameter,optimizing the layout of cutter head and cutter tools etc.Combined with the site practice,experiment is done to find ways to ensure ground sub-sidence after the shield within the specification. |
| |
| Keywords: | shield shallow burial large diameter sandy cobble driving improvement settlement |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
