桃园机场航厦下方捷运扩挖隧道施工案例

隧道建设（中英文） ›› 2011, Vol. 31 ›› Issue (S1): 311-316.

桃园机场航厦下方捷运扩挖隧道施工案例

张文城¹，王庆麟²，陈景功²

(1. 高速铁路局捷运工程处，台北； 2. 台湾世曦工程顾问股份有限公司，台北)

收稿日期:2011-04-15 出版日期:2011-08-05 发布日期:2011-11-04
作者简介:陈景功（1960—），台湾，1987年毕业于国立交通大学土木工程研究所，硕士，正工程师，现从事大地工程设计。

Construction Cases of MRT Enlarged Excavation Tunnel  under Taoyuan Airport Terminal

Chang WenCherng¹, Wang ChillyLin², Chen ChingKung²

(1. Bureau of High Speed Rail, MOTC, Taipei; 2. China Engineering Constructions, Inc., Taipei)

Received:2011-04-15 Online:2011-08-05 Published:2011-11-04

摘要/Abstract

摘要： 在桃园国际机场第二航厦下方，预留了捷运机场线的隧道，由于新规划的路线改变，需要扩大该隧道断面；这项扩挖隧道工作位于卵砾石地层，有11m高的水头；结构的宽度由4 m扩大至18.4 m，总开挖量约有7 927 m3。为了确保第二航厦结构及营运安全，新设了避雷接地网、重型托基支撑架及安全监测系统等；并藉由袪水、双环塞固结灌浆及防洪安全门等工程措施，辅助钻石链锯进行镜面破除切割。开挖过程中对于开挖壁面保护，则采用喷凝土、自钻式岩栓及垂直钢支撑，构成了临时开挖主要支撑系统。介绍隧道扩挖施工，细部工作内容及经由施工得到的许多宝贵经验。

关键词: 桃园机场捷运, 卵砾石层, 扩挖隧道, 水平袪水, 新奥工法

Abstract: An existing tunnel beneath Terminal 2 building reserved for the Taoyuan International Airport Link Metro Project was enlarged to accommodate the new alignment of Metro rail. The enlargement works were located in boulder formation with ground water head greater than 11.0 meter. The width of enlargement structure varies from 4 m to 18.4 m, and the total excavation volume is 7 927 m3. New thundering earthing system, reinforced strut frames for existing structures and monitoring system were installed to insure the safety and operation of Terminal 2 building. Ground water draw down, double parker grouting and flooding gate erection were performed prior the diamond wire saw demolishment of existing structures. Shotcreting, selfdrilled rockbolt and struts were the main components of the temporary support for excavation faces. This paper describes the details of construction works and the experience gained from this project.

Key words: Taoyuan MRT Airport Line, gravel layer, enlarged excavation tunnel, horizontal dewatering, NATM

张文城, 王庆麟, 陈景功. 桃园机场航厦下方捷运扩挖隧道施工案例[J]. 隧道建设, 2011, 31(S1): 311-316.

ZHANG Wen-Cheng, WANG Qiang-Lin, CHEN Jing-Gong. Construction Cases of MRT Enlarged Excavation Tunnel  under Taoyuan Airport Terminal[J]. Tunnel Construction, 2011, 31(S1): 311-316.

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桃园机场航厦下方捷运扩挖隧道施工案例

Construction Cases of MRT Enlarged Excavation Tunnel  under Taoyuan Airport Terminal

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