Autor: Hämmerling, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Use of AHP Method for the Determination of the Most Environmentally Beneficial Variants of Barrages
Autorzy:: Kubicz, J.
Hämmerling, M.
Walczak, N.
Powiązania:: https://bibliotekanauki.pl/articles/123314.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: AHP method
environmental impact evaluation
hydraulic structure
Opis:: This study presents an attempt to apply the AHP (Analytic Hierarchy Process) method for the determination of the most beneficial concept of development of a barrage. The main focus of the analysis was the influence of the civil engineering structure on various elements of the environment. The AHP method was applied to analyse the influence of specific scenarios on environmental elements and on the overall objective. Basing on the analysis, local and global priorities were determined for individual elements of the created decision tree, which allowed us to select the most beneficial scenario. The scenarios referred to the existing hydraulic structures located on the rivers Głomia, Gwda and Prosna. In order to verify the obtained results, calculations of the consistency of the importance evaluations for specific criteria were performed.
Źródło:: Journal of Ecological Engineering; 2015, 16, 4; 36-43
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Effect of the Geometric Structure of Flood Plain Vegetation on the Probability of Passing for Plant Debris
Autorzy:: Walczak, N.
Walczak, Z.
Hämmerling, M.
Powiązania:: https://bibliotekanauki.pl/articles/124524.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: geometric structure
flood plain
vegetation
debris
Opis:: Flood plains are a specific sedimentary environment. They are a natural clarifier and filter for rivers carrying large amounts of heavy metals, biogenic elements and other contaminants transported during high water and floods. Plenty of it is accumulated in the riverbank zone of channels i.e. a buffer strip. This is a relatively narrow strip of land situated along watercourses, often covered with riparian plants. It is functionally associated with river flooding and it forms a transition zone to ecosystems of mixed (oak-lime-hornbeam) forest plants. These plants unquestionably grow into a natural protective system of surface waters against contamination flowing down from areas used for agricultural purposes. Buffer zones provide the opportunity for self-cleaning, and according researchers they are among the most efficient natural tools to protect a catchment area. They can reduce the amount of sediments and nutrients carried by surface water flowing down from agricultural areas. Besides positive effects, the zones are accompanied by the phenomenon of flow blockage, which is particularly hazardous in case of directing great water away from its main channel. Shrubby vegetation retains small elements of plant origin and thus the free flow of water stopped. The article analyses the effect of vegetation structure density on flow conditions for small plant debris on a laboratory scale.
Źródło:: Journal of Ecological Engineering; 2016, 17, 4; 304-310
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Influence of the Selected Turbulence Model and Grid Density Degree on the Results of Velocity Distribution Obtained with the Use of the Simulation Program SSIIM
Autorzy:: Hammerling, M.
Walczak, N.
Nieć, J.
Powiązania:: https://bibliotekanauki.pl/articles/124009.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: velocity distribution
turbulence model
mathematical modelling
sill
Opis:: This paper analyzed the water flow parameters in the local scour created after building stones sills No 3 km 480 + 902 and 4 km 479 + 225 below the Jeziorsko reservoir on the river Warta. The analysis was carried out using the result of field measurements (velocity distributions) and SSIIM (freeware) software. The study of the geometry of the local scour, were used to create a numerical model and implementing it to the SSIIM software. In the research, the impact of grid density on the obtained results was estimated. The results included the qualitative and quantitative assessment. The conducted analysis can be used to determine the movement of sediment in local scour, and can predict the development in time, and also specify the sill stability under different conditions of the water flow.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 106-114
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Influence of the Presence of Vegetations in Floodplains on Flood Risks
Autorzy:: Walczak, N.
Hammerling, M.
Spychała, M.
Nieć, J.
Powiązania:: https://bibliotekanauki.pl/articles/123654.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: flood area
flow velocity
resistance coefficient
roughness coefficient
vegetation
Opis:: The movement of water on flood areas depends mainly on the geometric parameters of vegetation, which as a dynamic factor causes a high changeability of flow conditions during the year. The actual ecological trend, whereby there is a tendency to leave the plants in the floodplain, imposes the necessity on engineers to develop accurate methods of determining the effect of vegetation on what used to be once a commonly occurring flood risk. According to the report on national security risk, elaborated by the Government Security Centre, flooding is the most common such risk. This is most likely to occur among all the risks included in the National Crisis Management Plan and brings the greatest number of negative effects. In order to mitigate the negative phenomena related to floodplains, the methodology and calculation of the average flows, using the Maninng and Darcy-Weisbach models is presented.
Źródło:: Journal of Ecological Engineering; 2015, 16, 5; 160-167
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Possibilities of Using Hec-Ras Software For Modelling Hydraulic Conditions of Water Flow in the Fish Pass Exampled by the Pomiłowo Barrage on The Wieprza River
Autorzy:: Hammerling, M.
Walczak, N.
Walczak, Z.
Zawadzki, P.
Powiązania:: https://bibliotekanauki.pl/articles/952477.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: field measurements
fish pass
water table topology
HEC-RAS
Opis:: The aim of the article is to analyse hydraulic conditions of water flow in a fish pass. The test facility is part of the Pomiłowo barrage in the commune of Sławno, Poland. The authors applied HEC-RAS software for modelling hydraulic parameters of the water flow in the fish pass. The data from field measurements was implemented in the software and calculations of changes in the water table in the fish pass were made. The results confirmed the usefulness of HEC-RAS software for estimating hydraulic parameters of water flow in a fish pass. HEC-RAS software enables to take into account the parameters responsible for the phenomena accompanying the flow through a fish pass. Selecting mathematical model parameters (coefficients) should be preceded by a multidimensional analysis of the facility. More precise information on hydraulics, hydrology and biology of the test fish pass are also required.
Źródło:: Journal of Ecological Engineering; 2016, 17, 2; 81-89
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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