管渠养护的主要目的是消除管道功能性缺陷，恢复管道通水能力，保证管道通畅，其主要工作包括：路面巡视、日常检查、检查并清捞、管道疏通清洗、应急抢险、防汛抗台、管道中小修等…

Sewers & Channels Maintenance aims to eliminatefunctional defects, restore flow capacity, keepflowing smoothly, lt contains looking down thepipeline on the ground, daily inspection, cleaningmanhole and removing waste, cleaning sewer pipe,emergency rescue,flood control, pipe repair, etc.