複層地盤夾巨石對潛盾施工影響與因應對策之探討

The Influence of Complex Strata and Large Boulders to the Shield Tunneling and Its Counter Measures

廖銘洋(Ming-Yung Liao)

《地工技術》 58期 (1996/12) Pp. 55-64

https://doi.org/10.30140/SG.199612.0005

摘要

本文就潛盾工法在大台北地區運用之施工實務，探討潛盾施工除於軟弱地質與都市內施工之優點外，在具充滿地工技術之挑戰下，運用於公共工程而遭遇突變特異複層地盤，其中更因間夾巨石導致密閉型潛盾機受損，而於現地改造為手挖式，並輔以地盤改良及壓氣工法予以克服。其所產生之影響與因應對策過程，具屬經驗與實務之累積。本文以實例說明，提供地工界實務參考，由於時空環境關係影響因應對策之評估與抉擇，惟在階段性仍具攻錯石之用，期使潛盾施工在隧道工程施工技術上更臻善境。

關鍵字

複層地盤 ； 潛盾工法 ； 巨石

並列摘要

This paper discusses the application of shield tunneling technique in the soft ground condition of Taipei Metropolitan Area, especially focusing on the solution of a shield machine which was entrapped and damaged due to the unforeseen complex strata and embedded large boulders. This was solved by manually excavation with the application of combined soil improvement and compressed air.

並列關鍵字

complex strata ； shield tunneling method ； large boulder