Focus on "what concentration sediment can be flowed away by different flow", "how many sediment can be scoured by different flow" these two question, the threshold of water and sediment in desert wide valley reaches upper the Yellow River are further studied in this paper. By the annual water and sediment process of each section, the scouring and silting law of each section in desert wide valley reaches are revealed to obtain threshold of water and sediment in different intervals under different concentrations. Based on principle of water and sediment balance, the relationship among flow, sediment discharge and sediment concentration are analyzed to establish sediment discharge model of flood. Then the transformation effects of water and sediment are quantized clearly. A case study shows that the sediment of Toudaoguai is 12.4 million tons and the sediment erosion is 5.27 million tons without considering optimization of water and sediment,while the sediment of Toudaoguai increased by nearly 4 times with considering optimization of water and sediment. The water and sediment regulation effect significantly improved the relationship between water and sediment, the desert valley river channel scour; verify the accuracy and reliability calculation of water and sediment and sediment discharge threshold. The research has important significance on efforts and scheme optimization of water and sediment in desert wide valley reaches upper the Yellow River.
Bai Tao
,
Ma Rong
,
Ma Xu
,
Ha Yanping
,
Huang Qiang
. Threshold of Water and Sediment in Desert wide Valley Reaches upper the Yellow River[J]. Journal of Desert Research, 2018
, 38(3)
: 645
-650
.
DOI: 10.7522/j.issn.1000-694X.2017.00077
[1] 柴娟,白涛,王义民,等.黄河上游沙漠宽谷河道水沙调控探讨[Z]//2012全国水资源合理配置与优化调度技术专刊.中国水利技术信息中心,2012:121-127.
[2] 姚文艺,郜国明.黄河下游洪水冲淤相对平衡的分组含沙量阈值探讨[J].水科学进展,2008,19(4):467-474.
[3] 胡春宏,郭庆超.黄河下游河道泥沙数学模型及动力平衡临界阈值探讨[J].中国科学E辑:技术科学,2004,34(增刊I):133-143.
[4] 倪晋仁,金玲,赵业安,等.黄河下游河流最小生态环境需水量初步研究[J].水利学报,2002,33(10):1-7.
[5] 周永强,李景保,张运林,等.三峡水库运行下洞庭湖盆冲淤过程响应与水沙调控阈值[J].地理学报,2014,69(3):409-421.
[6] 王卫红,李勇.黄河下游二级悬河控制阈值探讨[J].人民黄河,2008,30(10):33-34,108.
[7] 田世民,姚文艺,郭建英,等.乌兰布和沙漠风沙入黄影响因子变化特征[J].中国沙漠,36(6):1701-1707.
[8] Ran LS,Wang S J,Fan X L.Channel change at Toudaoguai Station and its responses to the operation of upstream reservoirs in the upper Yellow River[J].Journal of geographical sciences,2010,20(2):231-247.
[9] 吴保生,刘可晶,申红彬,等.黄河内蒙古河段输沙量与淤积量计算方法[J].水科学进展,2015,26(3):311-32.
[10] Shuai Wang,Bojie Fu,Wei Liang,et al.Driving forces of changes in the water and sediment relationship in the Yellow River[J].Science of the Total Environment,2017,576:453-461.
[11] 姚文艺,张晓华,高亚军,等.黄河沙漠宽谷段水沙变化特征及驱动因素[J].中国沙漠,2017,37(2):361-371.
[12] 白涛.黄河上游沙漠宽谷河段水沙调控研究[D].西安:西安理工大学,2013.
[13] 赵昌瑞,喇承芳,陈建宏.龙羊峡、刘家峡两库调水制造洪水冲刷黄河内蒙古河道的可能性及冲沙效率分析[M]//水文泥沙研究新进展——中国水力发电工程学会水文泥沙专业委员会第八届学术讨论会论文集.北京:中国水利水电出版社,2010.
[14] 胡兴林,畅俊杰,赵昌瑞.利用人造洪水冲刷黄河内蒙古淤积河道的可能性分析[J].中国沙漠,1997,27(6):1085-1089.
[15] 彭文昌,李永山.黄河内蒙谷段异源水沙输移特性[J].中国沙漠,2016,36(3):805-813.
[16] 吴华莉,张小峰,金中武.宽窄相间河道水沙运动特性研究进展[J].人民长江,2015,48(8):14-18.
[17] Morfett John C.Threshold of motion of coarse-grained sediment under waves in shallow water[J].Coastal Engineering,1992,18(3/4):283-295.
[18] 张晓华,郑艳爽,尚红霞.宁蒙河道冲淤规律及输沙特性研究[J].人民黄河,2008,30(11):42-44.
