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介绍了在引水式小水电站压力前池宽度不变的情况下，采用曲线形布置溢流堰的情况。由于加长溢流堰长度，可以有效地增大溢流堰的泄流能力。从而减小了因机组弃荷溢流而导致引水建筑物规模扩大的弊端；达到降低工程造价的目的。
This paper introduces the situation that curved weir is used to arrange overflow weir under the condition that the width of the forewarning pool is small. Due to the longer overflow weir length, it can effectively increase the overflow weir discharge capacity. Thus reducing the drawbacks of expanding the size of the diversion structure due to overflow of the unit and reducing the project cost.