第四對澳供水管道-澳門段-鋪設工程 / The fourth Macao water supply pipeline laying works - Macao section

基坑開挖 , 支撐維護 , 臨時排水 , 回填 , 管道安裝連接駁 ; 工作中總長達3公里涉及與其他管網交錯路段及大面積的施工交通安排增加工作難度。 Pit excavation, support, temporary drainage, backfill, piping installation connection barge; The total length of work up to 3 km involved with other pipe and network staggered sections and large-scale construction with transportation arrangements,that cause the work will be more difficulty.