１桩膜围堰的提出桩膜围堰是在１９９７年京密引水渠技术改造工程施工中出现的。在改造施工中,为保证沿线在施工期不停水,拟定了先右岸后左岸的施工顺序,采用了传统的中导草袋围堰进行导流,以满足最大过水流量６ｍ３／ｓ的要求。按围堰顶高程在水面以上３０ｃｍ设计围堰断面,但 1 pile membrane cofferdam proposed pile membrane cofferdam in 1997 Jingmi diversion canal technological renovation project occurred. In the reconstruction construction, in order to ensure non-stop water supply along the line during the construction period, the construction sequence of the left bank after the first right bank was drafted and the traditional guide straw bag cofferdam was used to guide the flow in order to meet the requirements of the maximum water flow of 6 m3 / s . According to cofferdam elevation 30cm above the water surface design cofferdam section, but