LONG TERM EFFECTS OF REHABILITATION MEASURES ON BED LOAD TRANSPORT AT THE SALZACH RIVER

作     者：Sven HARTMANN Institute for Hydrosciences, German Armed Forces University Munich, 85577 Neubiberg, Germany. 

作者机构：Institute for Hydrosciences German Armed Forces Univ. Munich 85577 Neubiberg Germany 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2001年第16卷第2期

页      面：95-102页

核心收录：

学科分类：08[工学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 

主　　题：Bed load transport Numerical simulation Long term effects Sediment management River rehabilitation 

摘      要：The river Salzach and its tributary Saalach as part of the border line between Germany and Austria represents a permanent water management problem since centuries. While in former times threats for the people mainly arose from severe flood events the present situation is characterized by significant ecological deficits. These were caused by a rectification of the river resulting in a concentration of the flow followed by erosion of the river bed. The situation got worse in the late 60s after construction of hydropower plants started upstream holding back nearly all bed load material. The degradation of the river bed in the downstream section of the Salzach is stated critical by the authorities in respect of the lack of sufficient gravel remaining on top of fine material. As erosion processes of fine sand and silt cannot be predicted accurately but will be probably much faster than those of the gravel bed measures are necessary to stabilize the river bottom to avoid major damages of the embankments and further degradation of the groundwater table. Different alternatives were investigated in a framework of a wide range of studies over the past years. One of the major tasks was to estimate the long term effects on bed load transport.