室外排水管道属基础工程,受自然因素和施工环境影响较大,要在有限的工期内保证质量,工序的安排和施工措施的正确与否十分重要。现将一般的施工工序和施工过程中应注意的一些问题介绍如下。一、正常的施工工序安排开挖管沟→清理基槽→浇筑条形基础混凝土→安置管道→浇筑管座混凝土→抹带、养护→人工回填土至管顶以下50cm→机械全面回填至设计标高。二、施工过程中应注意的问题1.管沟在开挖以前,应做好地表排水工作。开挖区内的水沟和管道应改道,以防 The outdoor drainage pipeline is a basic project, which is greatly affected by natural factors and the construction environment. It is important to ensure the quality within a limited period of time. The arrangement of procedures and the correctness of construction measures are very important. Some problems that should be noted in the general construction process and construction process are described below. I. Normal construction process Arrange trenches for excavation →Clean up the base trough →Pipe concrete foundation →Placement pipelines →Pipe place concrete →Wiper zone, Maintenance →Manual backfill to 50 cm below the top of the pipe →Machine fully backfills to design elevation . Second, the construction process should pay attention to the problem 1. Pipe trench before the excavation, surface drainage should be done. Ditches and pipelines in the excavation area should be diverted to prevent