Page 7 - 捷運技術 第38期

捷運技術半年刊 第38期 97年2月 1

穿越淡水河潛盾隧道發進冷凍工法

龐聲瑀 林聿群 2
1
摘要

臺北捷運新莊線CK570C區段標之CK240子標潛盾隧道東西兩端工作井—O8大橋國小站
西端及道岔結構東端開挖深度分別約為34m及42m，該二處地下結構物分別鄰近淡水河東西
岸，由於高地下水壓所引發之工程災變時有所聞，細部設計顧問中興工程顧問股份有限公司
基於地質條件、工址環境及施工風險考量，於隧道發進及到達破鏡作業乃設計安全性較高之
冷凍工法做為地盤改良輔助工法。本文主要介紹已於O8大橋國小站上行線隧道順利發進所

採冷凍工法之規劃、施工之各項參數及施工成果，以供類似工程規劃設計及施工時之參考。

關鍵字：CK570C區段標、冷凍工法、地盤改良

The Application of Freezing Method on the Ground Treatment of Shield Tunnel
Section Beneath Danshui River

1
Seng-Yeu Pang Leu-Chiun Lin 2

Abstract
The excavation depths of the two work shafts on both ends of the shield tunnel section

(contract CK240 of section contract CK570C) are 34 m and 42 m respectively. The two work shafts,
located near the west side of Daqiao Elementary School Station and east of a turnout structure,
are close to the east and west banks of the Danshui River. Due to the construction risks caused by
high underground water pressure, and in consideration of geological conditions, site environment

and construction risks, DORTS’ detail design consultant Sinotech Engineering Consultants,
Ltd adopted the Freezing Method in tunnel excavation through mirror-face excavation as a
supplementary method of ground treatment. This article mainly introduces the planning, various
parameters during construction, and the construction results of the Freezing Method being applied

to the construction on Daqiao Elementary School Station's up-track tunnel, with a hope to serve as a
reference for the design and construction of similar projects

1. 臺北市政府捷運工程局北區工程處幫工程師 sypang@trts.dorts.gov.tw
2. 臺北市政府捷運工程局北區工程處工務所主任 linyc@trts.dorts.gov.tw