摘要
依据2010—2016年黄河下游小开河灌区引黄闸附近河段的水沙资料,总结小开河引黄闸的引水引沙特性,在此基础上提出近期小开河引黄闸引黄能力变化的原因,并对影响小开河引黄闸引水引沙效果的因素进行了简要分析。结果表明:小开河引黄闸主要存在大河流量较小时引水条件差、流量较大时引水含沙量大两方面的问题;河道下切导致的同流量下闸前水位降低、渠道淤积严重、闸前局部河势的变化是造成小开河引黄闸上述引水引沙问题的主要原因。
Based on the water and sediment data of the river near the Xiaokai River diversion gate from 2010 to 2016 , this paper summarized the characteristics of water and sediment diversion of the diversion gate. Then , it put forward the cause of the recent changea of the diversion gate capacity and analyzed the factors influencing the effect of water and sediment diversion. The results show that there are two problems such as poor water diversion condition when the flow rate is small and significance level of the sediment diversion when the sediment concen-tration is high.The main factors affecting water and sediment diversion are the lowering of the water level before the gate , the sediment deposi-tion of the channel and the change of river regime in front of the gate.
作者
刘彦晖
李军华
张向萍
张杨
江恩慧
LIU Yanhui;LI Junhua;ZHANG Xiangping;ZHANG Yang;JIANG Enhui(College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China)
出处
《人民黄河》
CAS
北大核心
2019年第2期153-156,160,共5页
Yellow River
基金
国家自然科学基金资助项目(51539004
41501014
51479080)
水利部公益性行业科研专项(201501003)
中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2016-13
HKY-JBYW-2016-22)
关键词
水沙资料
引水引沙
影响因素
小开河引黄闸
data of water and sediment
water and sediment diversion
influencing factor
Xiaokai River diversion gate