基于无防洪任务的混凝土坝泄洪规模研究  

Study on Flood Discharge Scale of Concrete Dam Without Flood Control Task

作　　者：王民侠[1] Wang Minxia(Shaanxi Province Institute of Water Resources and Electric Power Investigation and Design,Xi'an 710001,Shaanxi)

机构地区：[1]陕西省水利电力勘测设计研究院,陕西西安710001

出　　处：《陕西水利》2022年第3期69-72,共4页Shaanxi Water Resources

摘　　要：混凝土坝应优先采用经济的坝身泄洪型式,以普化水库为例进行研究,对泄洪排沙表底孔孔数、尺寸及不同组合型式进行比较,得出无防洪任务的混凝土坝,随坝高增加而增加的投资远大于闸门尺寸变化所增加的投资,选用较大泄洪规模是降低工程投资的有效途径。当坝高由校核洪水位确定时,泄洪规模越大枢纽投资越省,当坝高由设计洪水位或正常蓄水位控制时则无需继续加大泄洪规模。The concrete dam should give priority to the economical flood discharge type of the dam body. Taking the Puhua Reservoir as an example, the number, size and different combination types of bottom holes on the surface of the flood discharge and sand discharge surface are compared. It is concluded that for concrete dams without flood control tasks, the increase of investment with the increase of dam height is much greater than that of the change of gate size. Selecting a larger flood discharge scale is an effective way to reduce project investment. When the dam height is determined by the check flood level, the larger the flood discharge scale, the more economical the pivotal investment is. When the dam height is controlled by the design flood level or the normal water storage level, there is no need to continue to increase the flood discharge scale.

关 键 词：混凝土坝 泄洪规模 比选研究 

分 类 号：TV621[水利工程—水利水电工程] TV642.2