Page - 820 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- BEHAVIOUR OF THE BACKFILLED RIGHT BANK OF THE MAVČIČE DAM Pavel ŽVANUT Head of the Project Team for Dams, SLOVENIAN NATIONAL BUILDING AND CIVIL ENGINEERING INSTITUTE Rudi BRINŠEK Supervising Engineer, SEL - HYDROELECTRIC POWER GENERATION COMPANY LTD SLOVENIA 1. INTRODUCTION The Mavčiče concrete gravity dam, part of the corresponding hydro-power plant, was built on the Sava River, in central Slovenia (see Fig. 1), in 1986. It has a maximum structural height of 38.5 m, and the dam crest has a length of 149 m. The concrete dam structure consists of an erection bay, a machine hall, and two spillways, followed by an embankment dam (see Fig. 2). The total capacity of both spillways, which are closed by radial gates with flaps, is 3,200 m3/s. The reservoir, which contains 10.7 hm3 of water, has a length of 7.0 km and the surface area of 1.0 km2, whereas the catchment area of the reservoir is 1,480 km2 [1, 2]. 820