在中小型水库以往的设计中,往往由于水文资料不全或采用计算方法不当,计算出洪水流量与实际情况有较大的差别,而水库的防洪标准又定得比较低,遇到超过设计洪水或小面积集中暴雨时,可能造成洪水漫顶,应立即抢护。抢护的原则一般是“上截下泄”,一般有如下几方面措施(在确定抢护措施时要特别注意采用当地材料): In the past design of small and medium-sized reservoirs, due to the incomplete hydrological data or improper calculation method, flood discharge was calculated to be greatly different from the actual situation. However, the flood control standard of reservoirs was relatively low, and when it exceeded the design flood or When a small area is heavily stormy, it may cause flooding and it should be razed immediately. The principle of beheading is generally “punctured”. Generally, the following measures are taken (special attention should be paid to the use of local materials in determining the measures for curtailment):