- CSCD核心中文核心科技核心
- RCCSE(A+)公路运输高质量期刊T1
- Ei CompendexScopusWJCI
- EBSCOPж(AJ)JST
码头变电站电缆隧道下穿秦淮河关键技术
收稿日期: 2012-08-16
修回日期: 2012-09-18
网络出版日期: 2013-02-19
Discussions on the Key Construction Technologies for Cable Tunnel Underneath Qinhuai River
Received date: 2012-08-16
Revised date: 2012-09-18
Online published: 2013-02-19
码头变电站送电工程电缆隧道穿越整治后的秦淮河，场地地下水位高，河道下卧软弱地层，河堤设置有较长的抗滑桩，施工工法的选择受到很大限制，施工过程中河堤的保护十分困难，隧道内防排水系统要求高。通过对各种水下隧道施工工法的综合比较，分析河床冲刷等因素对隧道埋深的影响，推荐采用盾构法作为施工工法。通过对河堤稳定性、安全性的计算分析，提出采用桩基托换和注浆加固相结合的方法加固提岸后盾构掘进的方案；通过施工操作性和工程安全性的综合对比，提出隧道单面坡排水、盾构井内设置提升泵房的排水方案。实践表明隧道工法的选择和堤防处理措施是安全、可靠的，隧道排水方案是有效、可行的，可为类似工程提供参考。
王怀东 , 彭红霞 , 覃伟 . 码头变电站电缆隧道下穿秦淮河关键技术[J]. 隧道建设, 2012 , 32(增刊2) : 66 -71 . DOI: 10.3973/j.issn.1672-741X.2012.z2.013
The construction of the cable tunnel underneath Qinhuai River of a transformer substation at dock is a great challenge,as a result of high water table,soft ground under riverbed,deep friction piles in embankment,restricted construction methods,embankment protection during tunneling and high requirement of tunnel drainage.Finally,shield machine was selected for the cable tunnel construction after an overall comparison of underwater tunnel construction methods and analysis of the influences of riverbed erosion and other factors on tunnel cover.In addition,pile foundation underpinning and grouting are proposed for embankment reinforcement before tunneling after analysis of embankment stability and safety;and a tunnel drainage scheme is draw up through comparison of practicability and safety,including single slope drainage and pumping station in launching shaft.The smooth construction of the cable tunnel shows that the selected construction method and embankment reinforcement measures are safe and reliable,and the tunnel drainage scheme is effective and practical.
/
| 〈 |
|
〉 |