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ANALYSIS OF CAUSES OF UPLIFT ANOMALOUS DEVELOPMENT IN THE SUBSOIL OF THE PALCMANSKa MASA DAM

Emília Bednárová

First published: 2018-06-20https://doi.org/10.5593/sgem2018/1.2/s02.002View metrics

Abstract

Hydraulic structure Palcmansk? Ma?a is located in the eastern part of Slovakia, on the Hnilec River. Its main function is to produce electricity and flood control. It is in operation more than 60 years. The reservoir was created by damming up the river valley by concrete gravity dam. The bedrock of the dam is formed by phyllite rocks. The results of the water pressure tests confirmed the need to build a grout curtain in its subsoil. The safety of these structures is significantly determined by the uplift development in their subsoil. During reservoir operation, local anomalies were observed in the uplift development in the three control sections. The uplift low values of the grout curtain on the upstream face indicated either low permeability of the rock environment in front of grout curtain or its weakened function. The causes of observed anomalies were analysed by numerical modelling. Conditions that could cause such anomalous uplift development were investigated by parametric study (inverse method). By numerical modelling were investigated various combinations of permeability coefficients of the rock environment accepting findings from water pressure tests. In the presented paper we illustrate the solution results in one control profile, where the anomalous uplift development was observed.

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Publication details

Title
ANALYSIS OF CAUSES OF UPLIFT ANOMALOUS DEVELOPMENT IN THE SUBSOIL OF THE PALCMANSKa MASA DAM
Authors
Emília Bednárová
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining
Publisher
STEF92 Technology
Year
2018
Pages
11-18
SWS Citekey
Bednarova201821118
ISSN
1314-2704
ISBN
978-619-7408-36-2
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
uplift developmentdam`s subsoilinverse methodreservoir operation
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