@article { author = {Yazdani, S. and Yazdani, M. and Ahmadi, M.T.}, title = {Evaluation of Geometrical Characteristics of Rock Joints on Hydraulic Behavior and Seepage through the Abutments of Concrete Arch Dams}, journal = {Journal of Hydraulics}, volume = {3}, number = {1}, pages = {33-44}, year = {2008}, publisher = {Iranian Hydraulic Association}, issn = {2345-4237}, eissn = {2645-8063}, doi = {10.30482/jhyd.2008.85447}, abstract = {Limitation of water flow and seepage from upstream to downstream through the abutments is a majorfactor in design of concrete arch dams. In practice, due to the intensive loading imposed on abutments,the concrete arch dams are usually constructed on the rocky abutments with high degrees of strengthand stiffness. However, the hard rocks have always contained some discontinuities because of theirintrinsic brittle manner. Since these discontinuities are the main ways through which most of seepageis occurred and thus tend to instability of foundation, their hydraulic and mechanical effects must befully considered. In this paper the effects of geometrical parameters such as joints orientation andinitial aperture are studied on hydraulic behavior and seepage through abutments. In addition, theeffect of hydraulic initial aperture which is a hydraulic parameter is treated on the safety of abutments.The results show that the geometrical parameters have dominant influence on the seepage throughabutments and can also endanger the stability of foundation.}, keywords = {}, title_fa = {تاثیر مشخصات هندسی ناپیوستگی ها بر رفتار هیدرولیکی و نشت آب از تکیه گاه های سنگی سدهای بتنی قوسی}, abstract_fa = {}, keywords_fa = {}, url = {https://jhyd.iha.ir/article_85447.html}, eprint = {https://jhyd.iha.ir/article_85447_ec6a125515b326e24510b4ba8bd2bcfe.pdf} }