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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Study on the impounding situation of the key dams in the middle reaches of the yellow river
Study on the impounding situation of the key dams in the middle reaches of the yellow river
Author : ZHANG LI
ABSTRACT
The Yellow River is the second longest river in China, as well as the important water source for the northwest and north
China. But in recent years, the amount of sediment and runoff of Yellow River basin has showed a sharp reduction,
which may be caused by following factors: various water conservation projects, water-and-soil conservation project,
surface water consumption, over-exploitation of groundwater, utilization of rainwater, vegetation construction, coal
mining exploitation, climate change and so on. The Yellow River flows through the Loess Plateau with serious soil
erosion, and the warping dam is an important water-and-soil conservation measure. In the middle reaches of the Yellow
River a large number of warping dams were bulit, among which 5800 odd key dams (main and bigger warping dam) are
included. Moreover, these key dams have the function of storing water before they’re full of silt. Therefore, the number,
location and impounding characteristics of the key dams undoubtedly have an influence on the runoff of the Yellow
River. By means of design data query, site investigation and measurement, as well as remote sensing inquiry on Google
Earth platform, this paper discusses the conception and operating mode of the key dams, and researches the
impounding characteristics of all the 4798 key dams located above Tongguan station, a hydrological station located in
the middle reaches of the Yellow River. The research indicates that there are 875 impounding key dams in this area,
which accounts for 18.65% of all the key dams. The ratio varies in different tributaries because of the different regional
situation and local social development. A few key dams beyond their design deposition life still store water all year
round. These data will provide a basis for further research on the water evaporation of Yellow River and its influence on
the runoff decrease of the river.
File Size : 1,239,990 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 18/08/2015
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