小浪底工程修建对黄河河口淤积影响  

Impact of Xiaolangdi Water Conservation Project on Deposition Reduction of the Huanghe River Estuary

作　　者：尤联元[1] 

机构地区：[1]中国科学院地理研究所北京,100101

出　　处：《地理科学进展》2000年第2期142-149,共8页Progress in Geography

基　　金：国家自然科学基金资助项目!( 4 9871 0 1 4)

摘　　要：本文在整理、分析黄河小浪底工程建成后 ,坝下游来水来沙条件变化的基础上 ,利用若干经验关系式 ,就小浪底工程修建后对黄河河口区清水沟流路的淤积特征和变化趋势进行了研究 ,得到了 :在小浪底水库初期蓄水拦沙运用阶段 ,淤积减少、河口砂嘴发展速度变缓 ;在后期正常调水调沙运用阶段 ,淤积又有所恢复 ,河口砂嘴发展加快的认识。Xiaolangdi Water conservation project is the largest one in the Huanghe River. It changes the oncoming water and sediment process of the Lower Huanghe River and consequently, the deposition of the Huanghe River Estuary. Using obtained experimental formulas, this paper gets the following results:\;1. Comparing with the situation without Xiaolangdi project, deposition volume decreases at the first utilization stage, and then deposition volume is restored at the second utilization stage. Besides, the deposition volume is also depended on different discharge level of the Xiaolangdi reservoir.\;2. Global warming and human activities impact on deposition volume of the Huanghe River Estuary. If the water and soil conservation works are continuously increased with the normal speed, in addition to Xiaolangdi project, it is possible to make a good deposition volume reduction, which is better than that under only Xiaolangdi project.\;3. The river mouth spit is also related to oncoming water and sediment, consequently, to Xiaolangdi project. The Changing amplitude of the river mouth spit at the second utilization stage of Xiaolangdi project is faster than that of the first utilization stage.

关 键 词：黄河河口 小浪底工程 淤积 河口砂嘴 泥纱 

分 类 号：TV152[水利工程—水力学及河流动力学]