摘要
采用地区经验公式法、推理公式法及"洪水图集"法分别对绰勒灌区19条山洪沟设计洪峰流量进行了计算,结果显示:上述3种方法的设计成果值相差不大,偏差不超过30%。但计算显示流域面积越小,地区经验公式法计算结果越偏保守,随着流域面积增加,其计算结果也愈偏小。针对当地实际情况、资料系列的延长及公式修正等问题提出了设计建议。
Calculation of designed peak flow is conducted for 19 mountain flood washouts of Chuole Irrigation by means of regional experimental formula, reasoning formula method and ＂floodwater atlas＂ respectively. The results show that the values obtained from these three methods have a deviation of no more than 30%. However, the calculation result of regional experimental formula tends to be more conservative if the area of river basin is relatively smaller, and the value tends to be smaller along with the increase of river basin area. Recommendation is made for the design regarding to the factors of local status, extension of data series and formula revision.
出处
《中国水利》
2014年第8期26-28,共3页
China Water Resources
关键词
山洪沟
设计洪峰流量
绰勒灌区
计算
mountain flood washout
designed peak flow of flood
Chuole Irrigation District
calculation
