一、特大洪水概况安康水电站位于汉江上游安康以上18公里处的火石岩,集水面积35,600公里~2。上游180公里处建有石泉水电站,控制面积23,800公里~2。该区地处陕南,北有秦岭,南以大巴山、米仓山为界。夏秋季节,东移的西风带低值系统受副高阻塞停滞于此,加上充足的西南暖湿 I. Overview of Extraordinary Floods Ankang Hydropower Station is located in the upper reaches of the Han River at an altitude of 18 kilometers above the rock, with a catchment area of ​​35,600 km ~ 2. The upper reaches of 180 kilometers built Shiquan hydropower station, control area of ​​23,800 km ~ 2. The area is located in southern Shaanxi, Qinling Mountains in the north, south of Daba Hill, Michang Hill for the community. In the summer and autumn seasons, the westerly low-value system of the eastward movement is stopped by the obstruction of the subtropical high, adding enough warm and humid southwest