Page 45 - 捷運技術 第51期

捷運技術 第51期 41

臺北捷運地下車站結構防水工程

1
黃怡超 趙志堅 2

摘要
臺北都會區多屬河川沖積地層，土質不均勻，地下水位高，換言之，捷運地下車站結構
體幾乎都泡在水裡面，雖然澆置良好的混凝土結構本身就具有良好阻絕地下水進入的效果，
惟地下結構混凝土相較於地上結構有更高的施工難度，如何讓地下車站結構體具有良好的防
水功能，避免水滲入車站影響營運與站內設施，一直是本局關注之議題。
本局地下結構物防水技術經過多年防水材料的演進以及施工經驗累積，大面積的結構滲
漏水的情形相較於初期已通車路網已有明顯改善，本持續改進之精神，本報告蒐集本局各工
程處、工管處、品保處及本處等單位查驗新莊線、蘆洲線、信義線及松山線之滲漏水之記
錄，將其投入防水膜成本、滲漏位置與修繕工法作一分類與統計，並以特性要因圖，分析地
下結構體滲水成因與探討改善方案。

關鍵詞：地下車站、雙牆結構、背水壓面防水、預鋪型自黏式防水膜、特性要因圖

Structural Water-Resistance Measures Adopted at
Taipei MRT Underground Stations

1
Yi-Chou Huang Chih-Chien Chao 2
Abstract

Most of the Taipei Metropolitan Area is covered with alluviation stratum, resulting in
inconsistent soil quality and high underground water levels. In other words, Taipei MRT
underground station structures are almost immersed in underground water. Although concrete
provides good water resistance, pouring concrete is more difficult for underground structures than
aboveground structures. Stopping water from penetrating station structures and causing operational
failure and damage to facilities is a critical issue for DORTS.
After many years of experience and the evolution of new waterproof materials, significant
improvements have been made to water seepage and leakage along the latest MRT routes under
construction. In the spirit of continued improvement, the authors of this article collected inspection
records made by the DORTS Construction Management Division, Quality Assurance Division, and
Civil Engineering and Architectural Division for the Xinzhuang, Luzhou, Xinyi and Songshan lines.
Based on these records, classification and statistics of water-resistant membrane costs, water leakage
positions and repairs, cause-and-effect diagrams and analyses, and improvements to underground
structural leakages are all included.

Keywords: underground station, double-wall structure, negative-side water-resistance,
pre-applied water-resistant membrane, cause-and-effect diagram

1 臺北市政府捷運工程局土木建築設計處課長 ychuang@trts.dorts.gov.tw
2 臺北市政府捷運工程局路權室副工程司 chaocc@trts.dorts.gov.tw