In recent years construction work has been performed on the River Toplica with the aim of buildin... more In recent years construction work has been performed on the River Toplica with the aim of building a dam that will form the water supply for reservoir Selova. The basic purpose is water supply, but flood protection, sediment retention; production of hydro-electricity, breeding of fish, irrigation and tourism are important secondary benefits. This paper describes the headwaters of the River Toplica drainage basin and the nature and extent of its erosion and sediment transport processes. There are no measured data regarding sediment transport in the drainage basin, so the evaluation of sediment transport and potential reservoir siltation was based on empirical methods developed using research and direct measurements in experimental drainage basins elsewhere in Serbia.
During the construction of the regulation of a watercourse, a large number of unexpected events c... more During the construction of the regulation of a watercourse, a large number of unexpected events can occur and increase the risk associated with the project hindering its successful realization. Risk events can result in breaking deadlines, increasing costs, reducing quality, etc. This paper analyzes the risk in the implementation of the Medalj stream regulation project, using the appropriate method that gives the best results for each phase of the risk analysis. Thus, the HAZOP method was used to identify risk events, the risk matrix to define the level of risk, the FMEA method to propose actions to reduce the possibility of risk event occurrence, the Fault tree method to determine the cause of risk event occurrence and the Event tree method to determine possible outcomes of risk events. The obtained results showed that the key risk event was ?Only a part of the planned soil excavated?, so the paper will present the results related to earthworks, although the analysis referred to th...
Извод: Код реализације пројеката за уређење бујичних сливова могу да се појаве различити непредви... more Извод: Код реализације пројеката за уређење бујичних сливова могу да се појаве различити непредвиђени неповољни догађаји који за последицу имају прекорачење времена, повећање трошкова, смањење квалитета и др. У раду су приказане основне караткеристике противерозионих радова и ризици који се најчешће појављују код њиховог извођења. Такође, даје се кратак приказ управљања ризицима кроз основне фазе, од идентификације ризика, анализе ризика до реакције на ризик, као и приказ метода које се користе у анализи ризика. У оквиру квантитативних метода приказане су математичке симулације. Monte Carlo метод је стохастичка симулациона метода која захтева следеће кораке у примени: идентификација критеријумске и релевантних променљивих, додела расподеле вероватноће за релевантне променљиве, одређивање коефицијента корелације међу релевантним променљивим, извођење симулације и анализа резултата. Овом методом извршена је анализа укупних трошкова реализације пројекта регулације реке Думача у циљу изналажења количине финансијких средстава која би се користила као резерва у случају непредвиђених неповољних догађаја. Пројектом регулације реке Думача предвиђено је уређење корита у форми сложеног протицајног профила са облагањем зона где је то неопходно са аспекта стабилности. Укупни трошкови су представљени као збир трошкова свих група радова (припремни, земљани, зидарски, бетонски и завршни). Monte Carlo симулација за анализу трошкова извршена је помоћу програма Oracle Crystal Ball чији основни кораци за примену су описани у раду. На основу симулираних укупних трошкова реализације пројекта добијена је сума финансијских средстава потребна као резерва у случају непредвиђених догађаја.
The aim of this research was to analyse the changes in the soil erosion intensity caused by erosi... more The aim of this research was to analyse the changes in the soil erosion intensity caused by erosion control works (ECW) in Grdelica Gorge (The South Morava River) in the period between 1953 and 2016. For the purpose of quantifying the erosion intensity changes, the erosion potential model (EPM) was used to calculate the annual gross erosion (W), sediment transport (G), and erosion coefficient (Z) in the study area. As a result of the performed technical and biotechnical erosion control works, there was a general decreasing trend in the intensity of soil erosion processes in the last 63 years. The specific annual gross erosion in Grdelica Gorge was 1920.34 m3/km−2/year−1 in 1953, while in 2016 it was 492.42 m3/km−2/year−1. The specific sediment transport was 1421.05 m3/km−2/year−1 in 1953 and 364.39 m3/km−2/year−1 in 2016. Due to the changes in the intensity of erosion processes, the specific annual gross erosion in the study area decreased by 1427.92 m3/km−2/year−1 and the specific ...
International Soil and Water Conservation Research
Abstract Soil and water resources are important elements of the environment that is managed to re... more Abstract Soil and water resources are important elements of the environment that is managed to reduce the erosion rate and the destructive effects of torrential flooding. Implementation of the measures to reach this goal requires the ranking of sub-watersheds and areas within the sub-watersheds, from most to least vulnerable, which can be achieved using Multi-criteria decision analysis methods. In this paper, using the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE) II method ranking of nine sub-watersheds delineated in the Topciderska river watershed, Serbia, was performed by using ArcGIS software. The criteria used for determining the order of the most vulnerable sub-watersheds are land cover, rainfall, soil erodibility as well as topography. The importance of criteria was determined by using the Analytic Hierarchy Process (AHP) method, and the influence of the criteria weights on ranking results was tested. This research identified that the most vulnerable sub-watershed is located in the upper part of the study area, where 15% of the territory is at high risk of erosion. Thus, this sub-watershed should have priority for protection through the implementation of appropriate measures and works. The results of the PROMETHEE II method and the ArcGIS application represent the valuable information for watershed management planning and implementation of soil erosion and torrent control measures.
This article was downloaded by: [66.249.68.105] On: 13 July 2011, At: 09:58 Publisher: Taylor & F... more This article was downloaded by: [66.249.68.105] On: 13 July 2011, At: 09:58 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK
Soil erosion is a global problem, with severe consequences for the environment, human society and... more Soil erosion is a global problem, with severe consequences for the environment, human society and economy. In most cases, this process is caused by natural forces, but some human activities also contribute to soil erosion. The USLE is an erosion model which estimates average soil loss that would generally result from splash, sheet and rill erosion. Use of USLE has been extended as a useful tool for predicting soil losses and planning control practices by the effective integration of GIS-based procedures for estimation of factor values on a grid cell basis. In this paper, as a result of GIS layers-overlapping is a map of soil erosion for the study area of Republic of Srpska, and estimation soil erosion rate. The results will be taken into consideration during analysis of choosing the simple and efficient erosion prediction model for agricultural resources management and land planning which would be used in Republic of Srpska. We obtained an average of 5.13 t/ha/year of potential erosion in the study area, and 52.46 % of the territory had an erosion rate of <2 t/ha/year. The estimations of soil loss of >15 t/ha/year are inherent in 7.28 % of the study area. The basic objective of this paper was to provide a regionalisation of the territory of Republic of Srpska according to the level of the soil erosion risk. This is the first version of the soil erosion risk map with the USLE methodology in Republic of Srpska.
IOP Conference Series: Earth and Environmental Science, 2008
Reka Toplica (Južna Srbija) je najve a leva pritoka Južne Morave, kako po protoku vode, tako i po... more Reka Toplica (Južna Srbija) je najve a leva pritoka Južne Morave, kako po protoku vode, tako i po površini sliva koja ukupno iznosi 2.217 km 2 . U skladu sa Vodoprivrednom osnovom Republike Srbije, privodi se kraju izgradnja akumulacije ''Selova'' na reci Toplici, (brana je izgra ena ostali su još završni radovi, posle kojih treba da po ne punjenje akumulacije). Slivno podru je akumulacije obuhvata gornji deo slive reke Toplice na isto nim padinama planine Kopaonik. Akumulacija ''Selova'', predstavlja e izvorište za potrebe vodosnabdevanja stanovništva naselja Niškog i Topli kog okruga. Ukupna površina njenog sliva do pregradnog mesta je 346,05 km 2 , a zapremina akumulacije 70x10 6 m 3 . * Ovaj lanak rezultat je rada na projektu 410023 -Kontrola vodne erozije i ure enje bujica u funkciji zaštite vodoprivrednih objekata i kvaliteta voda
In recent years construction work has been performed on the River Toplica with the aim of buildin... more In recent years construction work has been performed on the River Toplica with the aim of building a dam that will form the water supply for reservoir Selova. The basic purpose is water supply, but flood protection, sediment retention; production of hydro-electricity, breeding of fish, irrigation and tourism are important secondary benefits. This paper describes the headwaters of the River Toplica drainage basin and the nature and extent of its erosion and sediment transport processes. There are no measured data regarding sediment transport in the drainage basin, so the evaluation of sediment transport and potential reservoir siltation was based on empirical methods developed using research and direct measurements in experimental drainage basins elsewhere in Serbia.
During the construction of the regulation of a watercourse, a large number of unexpected events c... more During the construction of the regulation of a watercourse, a large number of unexpected events can occur and increase the risk associated with the project hindering its successful realization. Risk events can result in breaking deadlines, increasing costs, reducing quality, etc. This paper analyzes the risk in the implementation of the Medalj stream regulation project, using the appropriate method that gives the best results for each phase of the risk analysis. Thus, the HAZOP method was used to identify risk events, the risk matrix to define the level of risk, the FMEA method to propose actions to reduce the possibility of risk event occurrence, the Fault tree method to determine the cause of risk event occurrence and the Event tree method to determine possible outcomes of risk events. The obtained results showed that the key risk event was ?Only a part of the planned soil excavated?, so the paper will present the results related to earthworks, although the analysis referred to th...
Извод: Код реализације пројеката за уређење бујичних сливова могу да се појаве различити непредви... more Извод: Код реализације пројеката за уређење бујичних сливова могу да се појаве различити непредвиђени неповољни догађаји који за последицу имају прекорачење времена, повећање трошкова, смањење квалитета и др. У раду су приказане основне караткеристике противерозионих радова и ризици који се најчешће појављују код њиховог извођења. Такође, даје се кратак приказ управљања ризицима кроз основне фазе, од идентификације ризика, анализе ризика до реакције на ризик, као и приказ метода које се користе у анализи ризика. У оквиру квантитативних метода приказане су математичке симулације. Monte Carlo метод је стохастичка симулациона метода која захтева следеће кораке у примени: идентификација критеријумске и релевантних променљивих, додела расподеле вероватноће за релевантне променљиве, одређивање коефицијента корелације међу релевантним променљивим, извођење симулације и анализа резултата. Овом методом извршена је анализа укупних трошкова реализације пројекта регулације реке Думача у циљу изналажења количине финансијких средстава која би се користила као резерва у случају непредвиђених неповољних догађаја. Пројектом регулације реке Думача предвиђено је уређење корита у форми сложеног протицајног профила са облагањем зона где је то неопходно са аспекта стабилности. Укупни трошкови су представљени као збир трошкова свих група радова (припремни, земљани, зидарски, бетонски и завршни). Monte Carlo симулација за анализу трошкова извршена је помоћу програма Oracle Crystal Ball чији основни кораци за примену су описани у раду. На основу симулираних укупних трошкова реализације пројекта добијена је сума финансијских средстава потребна као резерва у случају непредвиђених догађаја.
The aim of this research was to analyse the changes in the soil erosion intensity caused by erosi... more The aim of this research was to analyse the changes in the soil erosion intensity caused by erosion control works (ECW) in Grdelica Gorge (The South Morava River) in the period between 1953 and 2016. For the purpose of quantifying the erosion intensity changes, the erosion potential model (EPM) was used to calculate the annual gross erosion (W), sediment transport (G), and erosion coefficient (Z) in the study area. As a result of the performed technical and biotechnical erosion control works, there was a general decreasing trend in the intensity of soil erosion processes in the last 63 years. The specific annual gross erosion in Grdelica Gorge was 1920.34 m3/km−2/year−1 in 1953, while in 2016 it was 492.42 m3/km−2/year−1. The specific sediment transport was 1421.05 m3/km−2/year−1 in 1953 and 364.39 m3/km−2/year−1 in 2016. Due to the changes in the intensity of erosion processes, the specific annual gross erosion in the study area decreased by 1427.92 m3/km−2/year−1 and the specific ...
International Soil and Water Conservation Research
Abstract Soil and water resources are important elements of the environment that is managed to re... more Abstract Soil and water resources are important elements of the environment that is managed to reduce the erosion rate and the destructive effects of torrential flooding. Implementation of the measures to reach this goal requires the ranking of sub-watersheds and areas within the sub-watersheds, from most to least vulnerable, which can be achieved using Multi-criteria decision analysis methods. In this paper, using the Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE) II method ranking of nine sub-watersheds delineated in the Topciderska river watershed, Serbia, was performed by using ArcGIS software. The criteria used for determining the order of the most vulnerable sub-watersheds are land cover, rainfall, soil erodibility as well as topography. The importance of criteria was determined by using the Analytic Hierarchy Process (AHP) method, and the influence of the criteria weights on ranking results was tested. This research identified that the most vulnerable sub-watershed is located in the upper part of the study area, where 15% of the territory is at high risk of erosion. Thus, this sub-watershed should have priority for protection through the implementation of appropriate measures and works. The results of the PROMETHEE II method and the ArcGIS application represent the valuable information for watershed management planning and implementation of soil erosion and torrent control measures.
This article was downloaded by: [66.249.68.105] On: 13 July 2011, At: 09:58 Publisher: Taylor & F... more This article was downloaded by: [66.249.68.105] On: 13 July 2011, At: 09:58 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK
Soil erosion is a global problem, with severe consequences for the environment, human society and... more Soil erosion is a global problem, with severe consequences for the environment, human society and economy. In most cases, this process is caused by natural forces, but some human activities also contribute to soil erosion. The USLE is an erosion model which estimates average soil loss that would generally result from splash, sheet and rill erosion. Use of USLE has been extended as a useful tool for predicting soil losses and planning control practices by the effective integration of GIS-based procedures for estimation of factor values on a grid cell basis. In this paper, as a result of GIS layers-overlapping is a map of soil erosion for the study area of Republic of Srpska, and estimation soil erosion rate. The results will be taken into consideration during analysis of choosing the simple and efficient erosion prediction model for agricultural resources management and land planning which would be used in Republic of Srpska. We obtained an average of 5.13 t/ha/year of potential erosion in the study area, and 52.46 % of the territory had an erosion rate of <2 t/ha/year. The estimations of soil loss of >15 t/ha/year are inherent in 7.28 % of the study area. The basic objective of this paper was to provide a regionalisation of the territory of Republic of Srpska according to the level of the soil erosion risk. This is the first version of the soil erosion risk map with the USLE methodology in Republic of Srpska.
IOP Conference Series: Earth and Environmental Science, 2008
Reka Toplica (Južna Srbija) je najve a leva pritoka Južne Morave, kako po protoku vode, tako i po... more Reka Toplica (Južna Srbija) je najve a leva pritoka Južne Morave, kako po protoku vode, tako i po površini sliva koja ukupno iznosi 2.217 km 2 . U skladu sa Vodoprivrednom osnovom Republike Srbije, privodi se kraju izgradnja akumulacije ''Selova'' na reci Toplici, (brana je izgra ena ostali su još završni radovi, posle kojih treba da po ne punjenje akumulacije). Slivno podru je akumulacije obuhvata gornji deo slive reke Toplice na isto nim padinama planine Kopaonik. Akumulacija ''Selova'', predstavlja e izvorište za potrebe vodosnabdevanja stanovništva naselja Niškog i Topli kog okruga. Ukupna površina njenog sliva do pregradnog mesta je 346,05 km 2 , a zapremina akumulacije 70x10 6 m 3 . * Ovaj lanak rezultat je rada na projektu 410023 -Kontrola vodne erozije i ure enje bujica u funkciji zaštite vodoprivrednih objekata i kvaliteta voda
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