缝隙式排水就是在铺装面上仅留下一条15-20mm的缝隙，效果比较隐蔽美观，多为设计师在做步行街设计时作为地面排水的形式。国内很多地方都采用的缝隙式排水设计，例如：上海的南京路、成都的步行街、天津的和平路商业街等。
Gap type drainage is to leave only a 15-20mm gap on the pavement surface, the effect is relatively hidden and beautiful, and it is mostly used as the ground drainage form when the designer designs the pedestrian street. Many places in China adopt slit drainage design, such as Nanjing Road in Shanghai, pedestrian street in Chengdu and Heping Road Commercial Street in Tianjin.
缝隙排水沟是一个系统，简单说就是水泥预制厂预制好不同系列的产品，包括不同尺寸的排水沟，类似于集水井的“跌水箱”，已经各种配件，现场施工的时候像积木一样可以直接组合、密封完成的一种排水沟模具。
The gap drainage ditch is a system. In short, it is a kind of drainage ditch mold that the cement prefabrication factory has prefabricated different series of products, including drainage ditches of different sizes, similar to the "drop water tank" of the water collecting well, which has various accessories, and can be directly combined and sealed like building blocks during the field construction.