黃河中游多沙粗沙區(qū)治理對黃河下游減淤影響研究

1、黃河中游多沙粗沙區(qū)治理對黃河下游減淤影響研究黃河中游多沙粗沙區(qū)治理對黃河下游減淤影響研究The Impact Research of Controlling to Sediment-laden The Impact Research of Controlling to Sediment-laden and Coarse Sand Area in the Middle on Sedimentation and Coarse Sand Area in the Middle on Sedimentation Reduction of the Lower Yellow RiverReduction o

2、f the Lower Yellow River 黃委會水文局黃委會水文局Hydrology Bureau ，YRCC 高亞軍高亞軍 GaoGao YajunYajun 2007.61、多沙粗沙區(qū)和粗泥沙集中來源區(qū)簡介、多沙粗沙區(qū)和粗泥沙集中來源區(qū)簡介 Introduction of sediment-laden and coarse sand area and coarse sand concentrated source region of the middle Yellow River 3、多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估、多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算算

3、 Outline the area of the sediment overloaded and coarse sediment region to estimates the erosion and sedimentation of rivers lower reaches2、多沙粗沙區(qū)治理分區(qū)的確定、多沙粗沙區(qū)治理分區(qū)的確定 The define of sub-area in sediment-laden and coarse sand area controlling1 1 多沙粗沙區(qū)和粗泥沙集中來源區(qū)簡況多沙粗沙區(qū)和粗泥沙集中來源區(qū)簡況 Introduction of sediment

4、-laden and coarse sand area and coarse sand concentrated source region of the middle yellow river 多沙粗沙區(qū)和粗泥沙集中來源區(qū)的位置多沙粗沙區(qū)和粗泥沙集中來源區(qū)的位置 The location of the sediment - laden and coarse sand area and the coarse sand concentrated source region 多沙粗沙區(qū)在黃河中游的產(chǎn)沙貢獻多沙粗沙區(qū)在黃河中游的產(chǎn)沙貢獻 Contribution of sediment produc

5、tion in Sediment-laden and coarse sand area of the middle yellow river 結(jié)論：多沙粗沙區(qū)是攔截入黃泥沙的重點區(qū)結(jié)論：多沙粗沙區(qū)是攔截入黃泥沙的重點區(qū)Conclusion: The sediment-laden and coarse sand area is the most important area to head off the sediment into Yellow River. 粗泥沙集中來源區(qū)在多沙粗沙區(qū)中的產(chǎn)沙貢獻粗泥沙集中來源區(qū)在多沙粗沙區(qū)中的產(chǎn)沙貢獻Contribution of sediment pro

6、duction in coarse sand concentrated source region of the middle Yellow River結(jié)論：結(jié)論：粗泥沙集中來源區(qū)粗泥沙集中來源區(qū)是攔截入黃粗泥沙的重中之重地區(qū)是攔截入黃粗泥沙的重中之重地區(qū)Conclusion: coarse sand concentrated source region is the most important area to head off coarse sediment into Yellow River. 2 多沙粗沙區(qū)治理分區(qū)的劃分多沙粗沙區(qū)治理分區(qū)的劃分The define of sub-are

7、a in sediment-laden and coarse sand area controlling 2.1 劃分原則劃分原則Dividing Principles 1.快速減少下游河槽粗泥沙淤積；快速減少下游河槽粗泥沙淤積； The rapid degradation of the coarse sand of Channels sedimentation deposition in lower .2.治理面積相對較小，攔減粗泥沙量相對較多；治理面積相對較小，攔減粗泥沙量相對較多； A relatively small area and the relatively large amou

8、nt of coarse sediment reduction interceptions .3. 3. 對入黃水資源影響較??；對入黃水資源影響較小；Little Impact of the Yellow River Entered water Resources .4.4.當?shù)厣鷳B(tài)環(huán)境改善與下游河道減淤同步。當?shù)厣鷳B(tài)環(huán)境改善與下游河道減淤同步。Principle to improve the ecological environment and in the lower reaches Minimizing deposition of synchronicity .2.2 2.2 分區(qū)指標分

9、區(qū)指標Dividing index Dividing index 經(jīng)過論證，以粒徑經(jīng)過論證，以粒徑0.1mm0.1mm為粗泥沙界限，以粒徑為粗泥沙界限，以粒徑0.1mm0.1mm的粗泥沙輸沙模數(shù)的粗泥沙輸沙模數(shù)1400 t/(km1400 t/(km2 2a)a)和和700 t/(km700 t/(km2 2a)a)為指標，對多沙粗沙區(qū)進行進一步劃分。為指標，對多沙粗沙區(qū)進行進一步劃分。 After verification, we take the After verification, we take the diameterdiameter larger larger than 0.1m

10、m in diameter as limits of coarse sediment, than 0.1mm in diameter as limits of coarse sediment, and take 1,400 tons sediment modulus (kmand take 1,400 tons sediment modulus (km2 2a) and 700 a) and 700 tons(kmtons(km2 2a) which have larger thana) which have larger than 0.1mm diameter 0.1mm diameter

11、sediment as an indicator to further divide the sediment as an indicator to further divide the sediment-laden and coarse sand sediment-laden and coarse sand areas.areas.2.3 2.3 劃分結(jié)果劃分結(jié)果Dividing ResultDividing Result1 1區(qū)：區(qū)：F=1.88F=1.88萬萬kmkm2 22 2區(qū)：區(qū)：F=2.06F=2.06萬萬kmkm2 23 3區(qū)：區(qū)：F=3.92F=3.92萬萬kmkm2 2Wa

12、y1Way1：Index selectionIndex selection According to the above results and the research According to the above results and the research results of results of zhangrenzhangren, for estimating the effect of , for estimating the effect of deposition and erosion in the lower reaches of the deposition and

13、erosion in the lower reaches of the river, If the first, second and third districts were river, If the first, second and third districts were intercepted 100 million t of sediment, the reduction intercepted 100 million t of sediment, the reduction of the lower reaches of the river estimated at of th

14、e lower reaches of the river estimated at 0.70.7 million million tons,0.5 milliontons,0.5 million tons and 0.3 tons and 0.3 millionmillion tons by tons by lower volume.lower volume.3 3多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算 Outline the area of the sediment overloaded and coarse sediment reg

15、ion to estimates the erosion and sedimentation of lower reaches of a river 3 多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算Outline the area of the sediment overloaded and coarse sediment region to estimates the erosion and sedimentation of lower reaches of a river ProjectUnitSediment reductiontarg

16、etsZone1Zone2Zone3the sediment overloadedand coarse sediment regionAreakm21.882.063.927.86Surface water quantity*108m310.197.9913.0031.18Sediment transportingquantity*108 t2.771.903.348.01Sedimentreductionquantity*108 t10%0.280.190.330.8020%0.550.380.671.6030%0.830.571.002.4050%1.390.951.674.0170%1.

17、941.332.345.6190%2.491.713.017.21Sedimentationreduction quantity*108 t10%0.190.100.100.3920%0.390.190.200.7830%0.580.290.301.1750%0.970.480.501.9570%1.360.670.702.7290%1.750.860.903.503.2 多沙粗沙區(qū)不同程度治理后對黃河下游減淤量的估算多沙粗沙區(qū)不同程度治理后對黃河下游減淤量的估算Outline the area of the sediment overloaded and coarse sediment re

18、gion to estimates the erosion and sedimentation of lower reaches of a river. 時段period項目Project來沙(億t）Come silt下游河道淤積(億t）deposition in the lower reaches單位來沙淤積比Come silt deposition ratio來沙貢獻(億t）Come silt contribution1950-2000六站Six station13.513.38 7.868.01 25%2.001.882.880 33%0.95 way 2way 2 According

19、to the six station and lower reaches silt deposition ratio to calculate silt deposition per unit. We had the ratios are 25% and 33%, the depositions are 2 and 0.95 hundred million tons. 3 多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算多沙粗沙區(qū)各治理分區(qū)來沙對下游河道沖淤影響的估算Outline the area of the sediment overloaded and coarse sediment region to estimates the erosion and sedimentation of lower reaches of a river 主要結(jié)論主要結(jié)論 ConclusionsConclusions多沙粗沙區(qū)得到不同程