EPB Shield Tunneling for Twin Tunnels with Shallow Overburden under Railway in Operation

来源 :第五届中国国际隧道工程研讨会 | 被引量 : 0次 | 上传用户:mulang608
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Keio Line is an important part of the main railway in Tokyo Metropolitan rail transportation network.To mitigate traffic congestion as well as to avoid potential traffic accidents railway crossing with roads on the ground, a project for underground doubletrack railway and underground stations was planed and has been under construction near Chofu Station.Two parallel tunnels were constructed in the project, in which existing railways on ground level will be shifted into the underground parallel tunnels.One EPB TBM (6.85m outer diameter) was used for both first and second tunnel construction.The TBM was turned around in a vertical shaft after the first tunnel driving, and then launched from the shaft for the second tunnel.The TBM driving was executed under the following special conditions; 1) TBM driving beneath existing railway with shallow earth cover (the minimum earth cover is 4.7m that is less than the outer diameter of tunnel lining), 2) the ground bored by TBM which is mainly composed of the Tachikawa gravel formation containing boulders which is over 300mm, 3) small clearance between the parallel tunnels (the minimum clearance was 400mm), and 4) rotation and lift-up of the TBM in the narrow shaft beneath existing railway after the first tunnel driving (a weight of TBM was approximately 300ton).Fuda station is constructed by cut and cover tunnel method.The ground soil up to the tunnels was excavated in the station area first, and then, the tunnel linings were partially cut and removed to construct platform at the track level of the station.This paper summarizes the overall project and reports regarding the countermeasures against above mentioned conditions and the method of the platform level construction with cut and removal of the tunnel linings in Fuda station.
其他文献
本文介绍了深基坑自适应支撑系统研究的技术背景、总体工艺技术路线、系统总体设计、施工工艺、主要系统设备及工程应用情况等.系统设计采用了“树状即插分布式模块结构、多
  The TBM market has exploded in the last 20 years in terms of number of TBM produced/utilized and TBM size/diameter.However in the same lapse of time not man
会议
张魁,男,1956年出生。陕西省书法家协会会员、中国艺术家协会理事、陕西各界书画院常务副院长、陕西省文史馆研究员,兼任西安于右任书法学会常务副会长、西安于右任故居纪念
本文通过对警戒值的定义、分类及设定原则、设定方法等的探讨,建议了确定地下工程施工警戒值的方法.以上海地区基坑测斜监测数据为例,详细介绍了确定基坑测斜警戒值的过程,并
双11预售第一天直到次日凌晨2点,1.5亿网友蹲守在李佳琦的直播间里,随着“人间唢呐”标志性的“3-2-1”口号落音,上架的商品1秒被抢购空.据估计,李佳琦双11单日成交额达34亿
我今年69岁了。离休后一直没闲着,经常外出跑业务,搞材料,身体很好。可是,1991年突然血压高了起来,头晕脑胀,胃痛酸胀,食欲不振,四肢无力,连续几次晕倒。到医院检查,诊断为:
本文阐述探讨了通过在地下埋入传感器来接收土体(或结构)地震反应的信息(三维振动加速度).采集的信息通过计算机同步显示、分析和存储并可实时进行测点三维振动位移的计算,同
上海市轨道交通10号线一期工程(龙柏新村站-龙溪路站)中间井位于延安西路、程家桥路交叉口的西南角,因区间隧道避让延安路高架桩基础,所以上、下行线的区间隧道呈上下平面重叠
小小的流感,常会给驾车带来意想不到的后果。 据调查报告显示,感冒,特别是流行性感冒,对人的一些行动能力会产生重大影响,其作用几乎等同于喝了8升啤酒之后的效果。另外,流感
清晨,不少家长惟恐上班迟到或耽误孩子上学,往往冲着熟睡中的孩子大声喊叫或用力摇动,甚至强行掀被子生拉硬扯孩子起床。其实,这样做是有害于孩子身心健康 In the early mo