Engineering-geological investigation of the river bottom near a dam's stabilization threshold based on two different evaluation methodologies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F22%3A10248875" target="_blank" >RIV/61989100:27350/22:10248875 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:000646533100325" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:000646533100325</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12665-021-10164-0" target="_blank" >10.1007/s12665-021-10164-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Engineering-geological investigation of the river bottom near a dam's stabilization threshold based on two different evaluation methodologies

Popis výsledku v původním jazyce

The article concerns engineering and geological studies of the river bed near the threshold stabilizing the water flow of the Wloclawek hydroelectric power plant in Poland. We paid attention to the differences in river erosion behind the dam, as one section of the study area was dominated by erosion of potholes and the other by sedimentation of river material. A protective threshold (partly concrete, partly gabion) was built to stabilize the water flow and optimize the hydrological regime near the dam. As a result of the erosion process (behind part of the hydroelectric power plant) and sedimentation (behind part of the weir), this threshold is constantly being destroyed. This threatens uncontrolled changes in water level, instability of water masses and, consequently, constitutes a threat to the stability of the hydrotechnical structure. The principal aim of the study is to propose a new methodology to perform a risk assessment and to indicate how to protect the threshold structure. Initially, geodetic and bathymetric measurements were performed of the river bed, potholes and the threshold. Then the results were analysed, the risks were estimated and two independent risk assessment procedures were proposed. One suggestion concerning the area of potholes was to backfill them to protect the threshold made of concrete slabs. In the second section, there is a sedimentation of the river material around the gabion threshold, which is damaged, especially during flooding. To protect this gabion threshold, a different approach has been taken of modelling the water flow based on digital bottom models (DBMs). An engineering-geological investigation of one river bottom benefited from two types of protection features (a concrete threshold and gabion threshold) using two different methodologies to evaluate hazard and design subsequent protection of the thresholds. The results of our study support the structure&apos;s managers in maintaining its safety.

Název v anglickém jazyce

Engineering-geological investigation of the river bottom near a dam's stabilization threshold based on two different evaluation methodologies

Popis výsledku anglicky

The article concerns engineering and geological studies of the river bed near the threshold stabilizing the water flow of the Wloclawek hydroelectric power plant in Poland. We paid attention to the differences in river erosion behind the dam, as one section of the study area was dominated by erosion of potholes and the other by sedimentation of river material. A protective threshold (partly concrete, partly gabion) was built to stabilize the water flow and optimize the hydrological regime near the dam. As a result of the erosion process (behind part of the hydroelectric power plant) and sedimentation (behind part of the weir), this threshold is constantly being destroyed. This threatens uncontrolled changes in water level, instability of water masses and, consequently, constitutes a threat to the stability of the hydrotechnical structure. The principal aim of the study is to propose a new methodology to perform a risk assessment and to indicate how to protect the threshold structure. Initially, geodetic and bathymetric measurements were performed of the river bed, potholes and the threshold. Then the results were analysed, the risks were estimated and two independent risk assessment procedures were proposed. One suggestion concerning the area of potholes was to backfill them to protect the threshold made of concrete slabs. In the second section, there is a sedimentation of the river material around the gabion threshold, which is damaged, especially during flooding. To protect this gabion threshold, a different approach has been taken of modelling the water flow based on digital bottom models (DBMs). An engineering-geological investigation of one river bottom benefited from two types of protection features (a concrete threshold and gabion threshold) using two different methodologies to evaluate hazard and design subsequent protection of the thresholds. The results of our study support the structure&apos;s managers in maintaining its safety.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Earth Sciences

ISSN

1866-6280

e-ISSN

1866-6299

Svazek periodika

81

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

nestrankovano

Kód UT WoS článku

000740250700001

EID výsledku v databázi Scopus

2-s2.0-85122396755