摘要
溢洪道挑距计算中,在单宽流量较小,水头落差较大时,可借鉴溢流坝流速系数经验计算公式,应用于溢洪道流速系数计算中,继而推求挑距。结合工程实例,运用经验公式计算和模型试验相结合的方法,对各种计算流速系数的公式进行了比较分析,最终结论表明长委公式和湖南省院公式是较适用的。
While calculating the horizontal length of jet flow in the case of small discharge per unit width and large head drop,this paper refers to experienced formulae for calculating efflux coefficient in the overflow dam and applies them to the spillway.Based on specific projects,a comparative analysis of several typical experienced formulae has been made through calculation and model tests in this paper.Finally,a conclusion is reached that the experienced formulae recommended by Design Research Institute of Water Conservancy and Hydroelectric Power of Hu＇nan are more applicable.
出处
《中国农村水利水电》
北大核心
2011年第4期141-143,共3页
China Rural Water and Hydropower
关键词
流速系数
挑距
溢洪道
模型试验
efflux coefficient
the horizontal length of jet flow
spillway
model test
