| INFLUENCE OF SEDIMENT TRANSPORT ON ARMORED SURFACES |
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| 引用本文： | Katinka KOLL1and Andreas DITTRICH1 1 Institute of Resources Management,Hydraulic and Rural Engineering,University of Karlsruhe,Kaiserstr. 12,76128 Karlsruhe,Germany.. INFLUENCE OF SEDIMENT TRANSPORT ON ARMORED SURFACES[J]. 国际泥沙研究, 2001, 16(2) |
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| 作者姓名： | Katinka KOLL1and Andreas DITTRICH1 1 Institute of Resources Management Hydraulic and Rural Engineering University of Karlsruhe Kaiserstr. 12 76128 Karlsruhe Germany. |
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| 作者单位： | Katinka KOLL1and Andreas DITTRICH1 1 Institute of Resources Management，Hydraulic and Rural Engineering，University of Karlsruhe，Kaiserstr. 12，76128 Karlsruhe，Germany. |
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| 基金项目： | the European Commission ,DG XII,Environment and Climate Programme, Climatology and Natural Hazards Unit,in the framework of the |
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| 摘 要： | 1NFLU'ENCE OF SEDmeNT TRANSPORT ON ARMORED SURFACESKatinka KOLLl bo Antheas DrmCHlAbstract:LaboratOry exWnts have been cAned ou to stUdy the chateristics of stwen tZ'ansport inSteeP tw. The question is discussed wether an annM sMs is deStroyed due tD thebosport of material, because addihonal wises are tw on iL or the laye is shehe by thetranSN medal, beause a part of the stream poWer is used to move the material. Accordin tothe resultS of the PresN exH' in Wh the Me…
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INFLUENCE OF SEDIMENT TRANSPORT ON ARMORED SURFACES |
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| Katinka KOLL,Andreas DITTRICH. INFLUENCE OF SEDIMENT TRANSPORT ON ARMORED SURFACES[J]. International Journal of Sediment Research, 2001, 16(2) |
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| Authors: | Katinka KOLL Andreas DITTRICH |
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| Abstract: | Laboratory experiments have been carried out to study the characteristics of sediment transport in steep streams. The question is discussed wether an armoured surfaces is destroyed due to the transport of material, because additional impulses are acting on it, or the layer is sheltered by the transported material, because a part of the stream power is used to move the material. According to the results of the presented experiments, in which the influence of the feeding rate and the feeding duration have been investigated, transported material reaching an armoured river section from upstream always remobilzes bed material, which is immobile under clear water flow conditions. To decide if a static armour layer is either destroyed or not, two simple criteria were chosen: one considering the grain-size distribution of the eroded bed material, and another, which referes to the amount of eroded bed material. |
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| Keywords: | Sediment transport Bed stability Armored layer |
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