近年我国在山区广泛地进行水利电力建设。山区河流坡降陡,形成了理想的天然高水头,同时由于河岸岩层陡竣又排除了兴建水库的其它附加的工程费用。但是在山区建设也存在具体的困难条件,如复杂的地形、远距离和难于到达的施工场地,缺乏动力运输的交通线,因而要求提供经济的工程布置方案和最少的工程量,以 In recent years, our country has extensively carried out water conservancy and power construction in mountainous areas. The steep slope of the mountainous rivers creates an ideal natural high head, while the addition of other additional construction costs to the reservoir was ruled out by the steep bank. However, there are also specific difficulties in mountainous areas such as complex topography, long distance and inaccessible construction sites, and lack of transportation routes for power transmission. Therefore, it is required to provide an economical arrangement of works and a minimum amount of work to