小型水库是水利工程体系的重要组成部分,承担着防洪、供水、灌溉等十分重要的功能。河南省小型水库大部分建成于上世纪50～70年代,由于先天不足、后天失修,经年累月积病成险,不仅严重威胁下游群众生命财产安全,而且严重影响水库效益的发挥。截止目前,河南省有1741座小Ⅱ型水库存在病险问题, Small reservoir is an important part of water conservancy project system, bear the flood control, water supply, irrigation and other very important functions. Most of the small reservoirs in Henan Province were built in the 1950s and 1970s. Due to inherent deficiencies and acquired disrepair, the risk of years of accumulated disease is not only a serious threat to the life and property safety of the downstream people, but also seriously affects the performance of reservoirs. Up to now, there are 1741 small type Ⅱ reservoirs in Henan Province, there are risks,