英文篇名
DESIGN AND CONSTRUCTION OF REHABILITATION OF THE RAW WATER TRANSPORT MAIN OF CHIN-TAN WEIR
作者
劉弘祥、陳順得、張吉佐、顧 峻、廖于恒
關鍵字
原水管、目視檢視、裂縫修復工法
摘要
青潭堰原水管自青潭堰取水口至長興場分水井全長達8,811m,可利用的進出工作人孔僅有5個。為利用景美溪遷降工程而停水之黃金時間,檢修工程限於兩個月內完成。為爭取時效,檢視方式以最迅速便捷的目視法為主;在施工方面則需考慮備料容易、安全材料、輕簡機具及快速施工。在進行修復工作之前先根據經驗研判,將混凝土的裂縫進行分類分級,所採用修復工法分為五類:(a)襯砌表面矽酸質系防水膜修補;(b)襯砌施工縫灌注止水;(c)襯砌裂縫灌注止水;(d)襯砌破洞修補止水;(e)襯砌蜂窩及破損修補。在人力與機具密集投入之下,最後終能如期如質完成本工程。
英文摘要
The total length of the existing water Transport main, from Chin-Tan weir to the junction box in the Chang-Hsin plant, is about 8,811m. There are only 5 manholes available along the route. The allowable time for rehabilitation is only two months in accordance with the water stoppage for the Chin-Mei Chi pipeline downward re-profiled project. Considering the available time is tight, the simple megascopic inspection method was adapted. The rehabilitation method should comply with the following requirements, such as easy to mobilization, use of non-toxic material, handy equipment, and fast installation, etc. Prior to repairing, the defects and cracks were categorized into five types accordance to with the repairing methods: (a) surface repairing with silicate based chemicals, (b) water sealing injection along the construction joint, (c) water sealing injection along the crack, (d) refilling the holes on the lining, surface finishing and water sealing injection, (e) repairing honeycomb and defects. By means of intensive mobilization of manpower and equipment, this project was completed successfully not only on schedule but also with good quality.