黄河内蒙河段泥沙来源分析

发布时间：2018-03-30 22:15

本文选题：黄河内蒙河段　切入点：乌海　出处：《兰州大学》2015年硕士论文

【摘要】：黄河是我们的母亲河,但近年来由于其携带了大量的泥沙,导致在中下游地区常常出现地上悬河的现象,给沿岸的居民带来很大的灾害。对于黄河泥沙来源的分析,对进一步采取措施以减少灾害发生是非常必要的。黄河内蒙河段属于沙漠宽谷河段,在此区域有大量泥沙入黄,因此,本文选取黄河乌海-托克托的河段为研究对象,对黄河该河段的泥沙来源进行较为深入的分析。黄河的乌海-托克托段流经河东沙地、乌兰布和沙漠、库布齐沙漠等沙物质较为丰富的地区,同时这些地区又是我国最重要的风沙活动区,其风沙活动很可能导致风沙入黄,从而使这些地区成为该河段泥沙的可能主要来源。为了对这些可能源区进行定量的分析,本文采用指纹识别法,通过对源区的选择(乌海上游源区、沙漠源区及十大孔兑源区)、河段的划分(根据潜在泥沙来源地不同划分为三个河段：乌海-磴口河段、磴口-中河西河段和中河西-托克托河段)及计算,发现在乌海-磴口河段,乌海上游河段源区、河东沙地、乌兰布和沙漠和库布齐沙漠对其泥沙的贡献率分别为43.66%、34.91%、17.71%和3.72%；在磴口-中河西河段,四个源区对其的贡献率分别为41.74%、6.39%、7.68%和44.19%；在中河西-托克托河段,乌海上游河段源区、河东沙地、乌兰布和沙漠、库布齐沙漠和十大孔兑对其的贡献率分别为31.38%、3.78%、3.52、16.69%和44.63%。根据本文定量分析的初步结果,我们认为在研究河段内,黄河确实从其流经的几大沙漠中带入了大量的泥沙,该研究结果对黄河内蒙河段泥沙的治理提供了一定的定量性参考数据。
[Abstract]:The Yellow River is our mother river, but in recent years due to its carrying large amounts of sediment, resulting in hangingriver phenomenon often happens in the downstream areas, coastal residents brought great disaster. Analysis of the the Yellow River sediment source, to take further measures to reduce the occurrence of disasters is very necessary. The the Yellow River Inner Mongolia section is the desert straight reach, this area has a lot of sediment into the yellow, therefore, this paper selects the Yellow River Wuhai - Togtoh River as the research object, analyzes the sources of the river sediment in the Yellow River. The Yellow River, Wuhai - Togtoh section through the Hedong sandy land, Ulan Buh Desert, Kubuqi Desert sand material relatively rich areas, at the same time, these areas are the most important wind area in our country, the aeolian activity is likely to lead to the sand into the yellow, so that these areas become the main sediment in river The source of these. In order to analysis energy zone quantitatively, this paper adopts fingerprint identification method, based on the source region selection (Ukraine sea tour source area, desert source area and the ten big hole Duiyuan river area), division (according to different sources of potential sediment is divided into three sections: Wuhai - Dengkou section. In the Dengkou River in Hexi Hexi and Togtoh section) and its calculation, found in Wuhai - Dengkou River, Wuhai river source area of Hedong sandy, Ulam, cloth and desert and Kubuqi Desert on the sediment contribution rates were 43.66%, 34.91%, 17.71% and 3.72%; in Dengkou - West River, four source area for its contribution rate were 41.74%, 6.39%, 7.68% and 44.19%; in the Hexi Togtoh River, Wuhai river source area of Hedong sandy, Ulam, cloth and desert, Kubuqi Desert and ten of the contribution rate of the respectively 31.38%, 3.78%, and 3.52,16.69% 44.63%. according to the preliminary results of quantitative analysis in this paper, we believe that in the study area, the Yellow River did bring a lot of sediment from several deserts that it flows through. The research results provide quantitative reference data for sediment control in Inner Mongolia section of the Yellow River.

【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TV141

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