沿江地区的排灌站出水箱涵及低间多为混凝土结构，且在大堤身内，称为穿堤箱涵。60年代初至70年代，穿堤箱涵伸缩缝的止水多用沥青铜片。实践表明，这种止水材料容易老化、脱落，出现渗水、漏水现象，严重导致堤防翻砂、滑坡，影响排灌站正常运行，甚至在汛期发生险情，威胁大? Drainage and irrigation stations along the Yangtze River’s water tank culvert and more for the low-cost concrete structures, and in the dike body, called the dike dike. From the early 1960s to the 1970s, the water stop multi-purpose asphalt copper sheeting for the expansion of the tank culverts culverts. Practice shows that the water-stop materials are easy to age and fall off, water seepage and water leakage occur, seriously causing embankments turning over sand and landslides and affecting the normal operation of irrigation and drainage stations. Even dangerous situations occur in the flood season and the threat is large?