Akademik Veri Yönetim Sistemi
3rd World Multidisciplinary Civil Engineering, Architecture, Urban Planning Symposium (WMCAUS), Prague, Çek Cumhuriyeti, 18 - 22 Haziran 2018, cilt.471
In this century, world population is gradually increasing. As a result of this increase, the energy and water need also has increased significantly. Although it is known Turkey as a country with abundant water resources it is actually located in semi-arid region in the world. Nowadays, that water resources are increasingly important for humankind and the biggest role in using these resources more efficiently is dams. The dams can deposit water in their reservoirs as well as allow water to be used in areas such as drinking water, irrigation and electricity generation when necessary. On the other hand, it protects the surrounding habitats from natural disaster like floods. Dam life is estimated to be approximately 30 to 50 years. The most important factor in the end of the dam life is the filling of the dam dead storage by the sediment carried by the stream. In this study, the Comm Dam built on the comar Stream of Yesihrmak Basin was considered. In order to provide the irrigation and drinking water needs of Comm, the dam construction started in 1973 and the dam was coming on stream in 1977. The dam has an earth fill body and the height of the thalweg is 49 meters. The lake field is approximately 0.6 km(2). Bathymetric maps of Comm Dam belonging to planning stage and 2014 is available. On these maps, cross sections were drawn at intervals of 50 meters from the dam reservoir using NetCad 7.6 program. Floor elevations obtained from the cross sections were examined. The floor profiles obtained from two different maps were compared and the floor profile variation of the dam reservoir was examined over the years. It has been observed that there is an increase of 2 to 9 meters at the floor elevation up to a distance of 400 meters from the dam body. Significant change hasn't been detected at the distance from 400 meters to headwater. Besides, the elevation-volume curves were plotted using the elevation-volume belonging to data of the dam's 1977 and 2014, and comparisons were made between the curves. As a result of these comparisons, approximately, 79.6% decrease in the dead volume, 11.76% decrease in the active volume and 14.58% loss has been found in total volume of the dam. It is expected that the dead volume of the dam will expire within 10 years if the necessary measures are not taken. Finally, current situation of Comm Dam under sediment effect was investigated, the amount of sediment in dam reservoir was determined and the distribution of this sediment in dam reservoir was examined.