drainage trench

基本解释

Preventive measures are presented aiming at strengthening the subgrade and pavement drainage and the trench treatment.
从加强路基和路面排水及路槽处理等方面着手，提出防治的对策。
The drainage system consists of four water composition: street drainage→drainage veins→trench→sea (river), to ensure the city against the tide, flood hazards.
这个水系统由四级水体组成：街渠→六脉渠→濠→海（江），保证了城市免受海潮和洪水的危害。
Therefore the general construction process scheme is worked out as follows:open trench drainage, work site dried in the sun, conventional butt welding, and pipe laid down into trench.
经过调研和反复现场勘察，确定的总体施工方案为：挖明沟排水，作业带晾晒，正常组对焊接，沉管下沟。