鲇鱼山灌区渠首除险加固输水能力研究  

Study on Water Transport Capacity of Canal Head Rehabilitation in Nianyushan Irrigated Area

作　　者：张文峰 李西平 黄绍磊 李璐 ZHANG Wenfeng;LI Xiping;HUANG Shaolei;LI Lu(Henan Water&Power Engineering Consulting Co.,Ltd.,Zhengzhou 450016,China;Henan Water Conservancy Survey and Design Association,Zhengzhou 450016,China)

机构地区：[1]河南省水利勘测设计研究有限公司,河南郑州450016 [2]河南省水利勘测设计协会,河南郑州450016

出　　处：《人民黄河》2019年第11期89-92,共4页Yellow River

摘　　要：鲇鱼山灌区取水枢纽原设计闸墩、底板配筋不能满足现行规范要求,当发生小频率洪水时,易发生回水倒灌,因此研究了除险加固方案,并采用常规水力计算、非均匀流计算、水动力数值模拟计算相互印证对鲇鱼山灌区渠首枢纽除险加固后的输水能力进行了研究,得出以下结论:包括溢流坝在内的各个建筑物因原设计过流能力的富裕度较大,故虽然建桥后输水能力有不同程度的衰减,但衰减率均小于3%,因此仍能满足原设计过流能力要求;在溢流坝前12 m位置建检修桥对大型灌区枢纽溢流坝的过流能力影响最小。The original design of piers and floor reinforcements in the Nianyushan irrigation area cannot meet the requirements of the current regulations.When small frequency floods occur,backwater recharge is easy to occur.Therefore,the reinforcement scheme was studied and conventional hydraulic calculation and non uniform flow were adopted.The calculation and hydrodynamic numerical simulations had verified the water transport capacity of the headwaters of the Nianyushan irrigation area.The following conclusions are drawn:the buildings including the surplus capacity of overflow dam of the original design is large,so although the water delivery capacity after the bridge construction has different degrees of attenuation,the attenuation rate is less than 3%,so it can still meet the original planned over current capacity require ments;in case that the bridge is built in 12 m in front of the overflow dam,the overflow capacity of the overflow dam of a large irrigation area has the least impact.

关 键 词：除险加固 恒定非均匀明流 水动力数值模型 输水能力 鲇鱼山灌区 

分 类 号：TV135.1[水利工程—水力学及河流动力学]