一、工程概况和试验目的石壁水库位于南安县大盈溪上游,东距福厦公路约六公里,坝址以上集雨面积79.6平方公里,主河道长21.8公里,河道平均比降13.7‰,上游凤巢山是闽南的暴雨中心。该水库于1957年建成,以灌溉为主,结合防洪发电。由于原规划库容偏小,在1965年进行扩建,1967年3月竣工;1978年冬增 First, the project overview and experimental purposes Shebi reservoir is located in Nan’an County Daying Creek upstream, east of Fuzhou Highway about six kilometers above the dam site rainwater catchment area of ​​79.6 square kilometers, the main river 21.8 kilometers long, the average drop of 13.7 ‰, the upstream Feng Chao Shan is the rainstorm center of Minnan. The reservoir was built in 1957, mainly to irrigation, combined flood control power generation. As the original planning of the reservoir capacity is too small, in 1965 for expansion, completed in March 1967; Winter 1978 increased