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１９９８年夏，我国长江、松花江遭特大洪水袭击，许多大堤出现管涌及冒砂险情。其主要原因是没有解决堤岸的截水防渗问题。而截水防渗最有效的方法之一是在大堤内构筑地下硅防渗连续墙。常规的６００～８００ｍｍ厚的防渗砼墙工程投资太大，而国外生产的最薄抓斗也有３５０ｍ
In the summer of 1998, the floods in the Yangtze River and Songhua River in our country were hit by floods and many embankments were exposed. The main reason is that there is no solution to the problem of seepage of the embankment. One of the most effective ways to prevent seepage is to construct a subsurface impermeable continuous wall in the dike. Conventional 600 ~ 800mm thick anti-seepage concrete wall project investment is too large, while the thinnest grip of foreign production also 350m