我县在淮南山丘地区,群众在小河上建有许多拦河土坝,以形成蓄水区或抬高水位灌溉稻田,群众称之为“堰”或“坝”。在土坝上或坝端一般均修建有溢流水闸,平时关闸将水位抬到灌田高程,在洪水时开闸使全部洪水从其上溢流。历年以来,这种拦河坝均为群众自建,没有技术设计,单以经验作为依据,往往将闸孔修得偏小,对洪水又没有处理措施,因而常有洪水漫坝冲毁的现象。为此,在整修新建这类闸、坝时,水利机关曾派技术干部 In the Huainan area, the masses built many river embankments on the small river to form a water storage area or raise the water level to irrigate the rice fields. The masses called it “weir” or “dam.” In the earth dam or dam end are generally built overflow sluice, usually at the gate will lift the water level elevation to the irrigation field, in the flood when the gate to flood all the flood. Over the years, this type of barrage has been built by the masses without any technical design. Based on experience alone, it is often the case that the gate has been repaired to a small size and there is no treatment for the flood, so flood diversion dams are often destroyed. To this end, renovation of new such gates, dam, the water authorities have sent technical cadres