盾构到达米埔竖井出洞方案20150725Plan of TBM breaking through

广深港高铁深港连接隧道盾构出洞方案

广深港高铁香港826标

GSG Express Railway Hong Kong Contract 826

盾构米埔竖井出洞方案

Scheme of TBM breaking through at Mai

Po shaft

中铁十五局集团有限公司广深港高铁香港826标 CRCC 15 GSG Express Railway Hong Kong Contract 826

2015年7月25日 July 25th 2015

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广深港高铁深港连接隧道盾构出洞方案

目 录 CONTENTS

1 工程概况 GENERAL ................................................................................................................................. 1 1.1工程简介 PROJECT INTRODUCTION .............................................................................................................. 1 1.2接收井概况 RRECEIVING SHAFT .................................................................................................................. 2 1.3工程地质及水文条件 ENGINEERING GEOLOGICAL AND HYDROLOGICAL CONDITIONS ................................ 3 2 总体达到施工方案 THE OVERALL ARRIVAL CONSTRUCTION PLAN ............................................ 4 3 盾构出洞施工技术CONSTRUCTION TECHNOLOGY OF TBM BREAK THROUGH ........................ 5 3.1盾构出洞工艺流程PROCESS OF TBM BREAK THROUGH ............................................................................. 5 3.2盾构到达的准备工作PREPARE WORK BEFROE TBM ARRIVE ........................................................... 7

3.2.1 盾构机定位及接收洞门位置复核测量 TBM location and measurement check of receiving portal ............... 7 3.2.2 出洞地层加固 Ground reinforcement of breaking through............................................................................... 8 3.2.3 洞门渗漏检测 Portal leakage test ................................................................................................................... 10 3.2.4 出洞前竖井内准备工作 Preparation work in shaft before breaking through ................................................. 13 3.2.5 平移装置的定位安装 The location and installation of transition device ........................................................ 17 3.2.6 接收托架的安装 .............................................................................................................................................. 18

3.3 盾构机出洞掘进EXCAVATION OF TBM BREAKING THROUGH ................................................................... 20

3.3.1 到达前掘进控制 Excavation control before arrive ......................................................................................... 20 3.3.2 掘进参数控制 Excavation parameters control ................................................................................................ 21 3.3.3 管片支撑防护 Support protection of segment ................................................................................................ 21 3.3.4 盾构机出洞 TBM breaking through ............................................................................................................... 22 3.3.5 盾尾管片脱出盾体 Shield tail segment separate from TBM body ................................................................. 24 3.3.6 最后一环管片处理 The segment handling of last ring ................................................................................... 25 3.3.7 盾体平移 .......................................................................................................................................................... 28 3.3.8 米埔竖井排水 Water discharge in Maipo shaft ............................................................................................... 30

3.4盾构出洞施工注意事项NOTS OF CONSTRUCTION WHEN TBM BREAK THROUGH ..................................... 31 4 施工风险及应对措施 CONSTRUCTION RISK AND SOLUTIONS ...................................................... 32

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广深港高铁深港连接隧道盾构出洞方案

4.1风险的等级标准 RISK GRADINGS .............................................................................................................. 32 4.2盾构机出洞安全风险评估及措施RISK ASSESSMENT AND SOLUTIONS FOR TBM BREAKING THROUGH ... 33 4.3 INSPECTION AND TEST PLAN检查及测试计划 ........................................................................................... 46

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广深港高铁深港连接隧道盾构出洞方案

广深港高铁香港826标

GSG Express Railway Hong Kong Contract 826

盾构米埔竖井出洞方案

Scheme of TBM Breaking Through in Mai Po shaft

1 工程概况 General

1.1工程简介 Project introduction

广深港高铁深港连接隧道为?9.6m双洞单线盾构隧道，隧道起点为皇岗公园竖井，穿越深圳市中心城区，过深圳河进入香港米埔湿地，最后到达香港米埔竖井，全长3346m，其中深圳段1856m、香港段1490m，香港段迄止里程为

DKaa115+924.881～DKaa117+403.029。深港连接隧道采用2台海瑞克公司直径9.96m的气垫式复合模式泥水加压式平衡盾构机从皇岗公园工作井始发，两台盾构错开一定距离，左右线平行推进，自香港米埔竖井吊出。

GSG express railway tunnel connecting Shenzhen and Hong Kong is 9.6m shield tunnel with double tunnel and single line, starting point is Huanggang park shaft, crossing Shenzhen downtown area and Shenzhen river to Mai Po wetland in Hong Kong, finally reaching Mai po shaft in Hong Kong, total length is 3346m, Shenzhen section is 1856m, Hong Kong section is 1490m, the present mileage in Hong Kong section is

DKaa115+924.881～DKaa117+403.029. We use two Herrenknecht slurry TBMs with diameter of 9.96m and start from Huanggang park shaft, keep a certain distance between two TBMs, parallel advance with both machines, and at last the two machines will be lifted out from Mai Po shaft.

隧道内线路隧道顶面最大埋深约42m，最小埋深约26m；最大曲线半径12000m，最小曲线半径2000m；最大坡度 12‰，最小坡度3‰。盾构机由香港米埔竖井吊出，到达端里程为DKaa117+403.029，地表为香港825标段施工场地。出洞段隧道坡度为3‰的上坡，覆土厚度23.32m，隧道外径9.6m，内径8.7m，两条线间距17.2m，左右线外

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广深港高铁深港连接隧道盾构出洞方案

壁净距为7.6m。

The maximum and minimum depth of tunnel invert is about 42m and 26m; the maximum and minimum curve radius is 12000m and 2000m; the maximum and minimum gradient is 12‰ and 3‰. TBM will be lifted out from Mai Po shaft, which mileage is DKaa117+403.029, the surface belong to Hong Kong contract 825 construction site. The section for TBM out from tunnel is a upgrade with 3‰ gradient, thick of ground is 23.32m, outside and inner diameter of tunnel is 9.6m and 8.7m, the distance between two lines is 17.2m, the outer wall spacing is 7.6m.

图1 广深港客运专线深港隧道平面示意图深港连接隧道(3346m)DK113+643DK114+017矿山法段36m皇岗竖井盾构隧道(深圳段)1856mDK115+873盾构隧道(香港段)1490m23m米埔竖井374mDK117+363 图1 广深港高铁深港连接隧道平面示意图

Figure 1 GSG express railway Shenzhen-Hong Kong tunnel link plan sketch

1.2接收井概况 Rreceiving shaft

接收井为米埔竖井，由825合同段施工完成。米埔竖井深34.13m，尺寸18×29m，竖井成“凸”字型结构，左、右线出洞处正上方有混凝土隔墙，无法直接吊出，需平移至位于竖井中央的吊出口方能吊出，吊出井尺寸18×9m。竖井连续墙为1.0m厚的玻璃纤维筋混凝土墙，洞门处内衬墙暂未施工，内衬墙厚为2.0m，竖井目前底板标高-29.63，距盾构机底部1.354m，靠中间吊装井处有两道混凝土台阶及预留的钢筋笼。见下图。

Mai Po shaft is receiving shaft, which is finished by contract 825. The depth of Mai Po shaft is 34.13m with a dimension 18*29m; it is a “凸” shape structure. There is concrete wall

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