水泥基渗透结晶型防水涂料在跌水建筑物中的应用

Application of Cement-Based Permeable Crystalline Waterproof Coating in Water Drops

由于人工开挖渠道与周边天然河道存在不同落差及夹角,导致汇渠水流的跌落势必对航道造成冲刷或横向流速等不利影响,因此,设计上多采用跌水建筑物用以控制天然河道的汇渠流速、流态等以实现渠道的稳定运行及通航安全。流经跌水建筑物的水流呈自由抛射状自上游向下跌落至消力池内,因此而对跌水建筑物过流断面的施工质量要求较高,通常采用钢筋混凝土结构+水泥基防水涂料的方式应对上游来水条件复杂、泥沙块石夹杂较多的情况。以尹河跌水建筑物为研究对象,对水泥基渗透结晶型防水涂料的施工工艺进行了研究并付诸实施,取得了较好的效果。

Due to the head difference and angle between the artificial channel and the natural river reach,the drop of the water flow in the confluence will inevitably cause adverse effects on the channel such as scouring or lateral flow velocity,etc.To achieve the stable operation of the channel and the safety of navigation,water drops are commonly used to control the velocity and flow regime.Since the flow passing the drops is in a free projectile shape before entering the downstream stilling basin,the construction quality of the flowing surface is relatively high,and reinforced concrete+cement-based waterproof coating are usually adopted when the flow regime is complicated with mixed sand and rocks.This paper takes the Yinhe water drop as the research object,and summarizes the experience by studying the construction technology of cement-based permeable crystalline waterproof coatings,aiming to provide reference for similar projects.