ANALYSIS OF THE TECHNICAL STATE OF DAMS IN TRAKAI DISTRICT

Abstract

The article analyses the technical state of concrete and reinforced concrete structures of hydraulic structures in Trakai district. The relevance of this work is to identify the dangerous changes occurring during the use of hydraulic structures, and to propose solutions for the elimination of the detected defects. The aim of the work is to assess the technical state of the dams located in Trakai district hydroschemes, to identify the deteriorations of the hydraulic structures and to provide recommendations for their elimination. The work used various methods: researches based on various literature sources and their analysis; visual researches of defects and damages of the dams' elements, according to the damages identified during the researches, the technical state was evaluated by scores, following the criteria specified in the technical regulation for construction STR.1.07.03:2017. The instrumental method used was the non-destructive determination of the concrete strength using a mechanical calibrated device - a Schmidt hammer. The technical state of the hydroschemes examined is as follows: the hydroscheme of the Tiltai dam and the hydroscheme of the Spengla and Greiželis lakes dammed in the Rūdiškės municipality are in a satisfactory condition, while the hydroscheme of the Totoriškės dam is in a poor condition. In view of the observed substantial damage, solutions for repair or reconstruction of the Tiltai dam hydroscheme on the River Gelužis, the Totoriškės dam hydroscheme on the River Strūzda, and repair or reconstruction of the Spenglos and Greiželis lakes hydroscheme on the River Spengla, dammed by the Rūdiškės municipality, were proposed.