渠道衬砌防渗是一项重要的节水措施，衬砌渠道防渗效果的好坏，与伸缩缝的止水效果关系很大。过去衬砌渠道伸缩缝一般采用平缝，缝间填以沥青砂浆、焦油塑料胶泥等材料。由于止水材料与混凝土平接，粘接强度往往不足，在发生温度变形，止水材料与混凝土的结合面容易分离，... Seepage control of channel lining is an important water-saving measure. The effect of seepage prevention of lining channel is good or not, which has a great relation with the sealing effect of expansion joints. In the past lining channels expansion joints generally used flat seam filled with asphalt mortar, tar plastic clay and other materials. As the water-stop material is connected with the concrete, the bonding strength is often insufficient, and when the temperature deformation occurs, the combination of the water-stop material and the concrete can be easily separated ...