在水利工程中，经常会用到渠水管、透水管等排水管道，如水问基础排水、土坝坝身排水以及挡土墙后排水等．以往，这些排水管道大多采用混凝土管或塑料管等，但比较脆且易变形，排水效果屯不十分理想、这里，我们介绍一种新型的，营型排水吞材，即第三代款式逐水管。这种管排案 In water conservancy projects, drainage pipes, permeable pipes and other drainage pipes are often used, such as water drainage, drainage of earth dam bodies and drainage after retaining walls. In the past, most of these drainage pipes were made of concrete pipes or plastic pipes, but they were relatively brittle and easily deformed. The drainage effect was not very satisfactory. Here, we introduce a new type of drainage drainage material, namely, . This tube row case