中文摘要：

峡谷区地形条件复杂,汇水区多为山地地形,汇流速度快,因此峡谷区内尾矿库的选址与设计,首先要考虑其所在小流域洪峰流量的大小。探讨了目前普遍采用的流域洪峰流量计算方法后,选择了适合峡谷区小流域洪峰流量的计算公式,并以云南省某峡谷区尾矿库为例,进行了实地的计算。通过实际调查后,计算结果接近实际情况,计算方法值得在其他峡谷区推广应用。

英文摘要：

Due to the complex terrain in gulch area,and mostly mountainous terrain in the area of water collection with fast collecting flow speed,it is essential to consider the volume of small watershed＇s flood peak flow in choosing and designing of tailing pool in gulch area.After studying the flood peak flow calculation method adopted generally at present,the calculation formula of small watershed＇s flood peak flow suiting to the gulch area is selected.Meanwhile,taking the mine tailing pool in a certain gulch area of Yunnan province for example,the field calculation on the flood peak flow is carried out.With the actual survey,the calculation result approaches the actual situation.This calculation method is worthy of popularizing in other gulch area.