Annals of Warsaw University of Life Sciences, Land Reclamation最新文献_第3页

Concept of hybrid embankment 混合路堤概念

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0016

M. Fukue, Z. Lechowicz, R. Takahashi, Kouji Uehara

引用次数: 1

Plastic flow rule for sands with friction, dilation, density and stress state coupling 摩擦、膨胀、密度和应力状态耦合的砂土塑性流动规律

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0023

M. Wojciechowski

引用次数: 0

Vertical and horizontal permeability measurements in organic soils 有机土壤垂直和水平渗透率测量

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-06-01 DOI: 10.1515/sggw-2015-0021

E. Malinowska, A. Szymański

{"title":"Vertical and horizontal permeability measurements in organic soils","authors":"E. Malinowska, A. Szymański","doi":"10.1515/sggw-2015-0021","DOIUrl":"https://doi.org/10.1515/sggw-2015-0021","url":null,"abstract":"Abstract The paper is referring to vertical and horizontal laboratory permeability measurements in soft organic soils. The estimation of anisotropic permeability in soft organic soils, as peats, requires to use a special apparatus and the knowledge of proper analysis of the test results. During loading the void ratio decreases substantially that causes the changeability of the permeability. The change of permeability during the compression is very important because of the influence of the consolidation co-efficient. Initial strain in soft organic soils appears very quickly, just after loading, and brings immediately the decrease of permeability. In most of the estimations, it is assumed that during the consolidation process the water flows just in the vertical direction. In soft organic soils, like peats, the consolidation theory should consider the changes of mechanical and physical properties in consolidation period, in both directions. The direct measurement of vertical and horizontal permeability of organic soil and the non-Darcian flow theory may be of considerable importance in estimating pore water pressure dissipation, and settlement rates in the consolidation model. In the paper, the method of investigation and the test results of the vertical and horizontal permeability are presented. The Modified Rowe Cell Set for obtaining consolidation and flow characteristics in different directions is used.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122130480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Variability of morphological conditions of the Vistula river channel in the section Czerwińsk-Kępa Polska Czerwińsk-Kępa波兰段维斯瓦河河道形态条件的变化

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-03-01 DOI: 10.1515/sggw-2015-0011

Z. Popek, M. Wasilewicz

引用次数: 1

Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic* 用活性炭从间歇系统的道路径流中去除溶解的金属-平衡和动力学*

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-03-01 DOI: 10.1515/sggw-2015-0012

K. Pawluk, J. Fronczyk

引用次数: 5

Investigations of hydraulic operating conditions of air lift pump with three types of air-water mixers 三种空气-水混合器气举泵液压工况研究

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-03-01 DOI: 10.1515/sggw-2015-0015

Marek Kalenik

{"title":"Investigations of hydraulic operating conditions of air lift pump with three types of air-water mixers","authors":"Marek Kalenik","doi":"10.1515/sggw-2015-0015","DOIUrl":"https://doi.org/10.1515/sggw-2015-0015","url":null,"abstract":"Abstract: Investigations of hydraulic operating conditions of air lift pump with three types of air-water mixers. The paper presents the analysis of results of the investigations concerning the influence of various constructive solutions of the air-water mixers on hydraulic operating conditions of the air lift pump. The scope of the investigations encompassed the determination of characteristics of delivery head and delivery rate for three types of air-water mixers applied in the constructed air lift pump. Using the obtained results, the efficiency of the three types of air-water mixers applied in this air lift pump was determined. The analysis was carried out and there was checked whether the improved analytical Stenning-Martin model can be used to design air lift pumps with the air-water mixers of these types. The highest capacity in the water transport was reached by the air lift pump with the 1st type air-water mixer, the lowest one – with the 3rd type air-water mixer. The water flow in the air lift pump increases along with the rise in the air flow. The lower are the hydraulic losses generated during flow of the air flux by the air-water mixer, the higher is the air lift pump capacity. Along with the rise in the water delivery head, the capacity of the air lift pump decreases. The highest efficiency is reached by the air lift pump with the 1st type air-water mixer, the lowest – with the 3st type air-water mixer. The efficiency of the air lift pump for the three investigated types of air-water mixers decreases along with the rise in air flow rate and water delivery head. The values of submergence ratio (h/L) of the delivery pipe, calculated with the use of the improved analytical Stenning-Martin model, coincide quite well with the values of h/L determined from the measurements.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126117548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Comparison of the predicted insulation of clothing in Toruń and Koniczynka in the years 1998–2012* 1998-2012年托鲁奇和科尼琴卡地区服装保温预测比较*

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-03-01 DOI: 10.1515/sggw-2015-0014

A. Araźny, J. Uscka-Kowalkowska, M. Kejna

{"title":"Comparison of the predicted insulation of clothing in Toruń and Koniczynka in the years 1998–2012*","authors":"A. Araźny, J. Uscka-Kowalkowska, M. Kejna","doi":"10.1515/sggw-2015-0014","DOIUrl":"https://doi.org/10.1515/sggw-2015-0014","url":null,"abstract":"Abstract: Comparison of the predicted insulation of clothing in Toruń and Koniczynka in the years 1998–2012. This paper compares the predicted insulation of clothing (Iclp) in Toruń and Koniczynka, presented using a scale of evaluation of thermal environment proposed by B. Krawczyk (2000). The annual mean value of predicted insulation of clothing in urban areas of Toruń was equal to 1.0 clo, which was 0.1 less than in the agricultural area of Koniczynka. The influence of atmospheric circulation on the Iclp index was also analysed. The study used the circulation types as classified by Niedźwiedź (1981) in the Catalogue of atmospheric circulation for the Bydgoszcz-Toruń region (Przybylak and Maszewski 2009, 2013). The frequency of occurrence of individual circulation types was examined along with their influence on the predicted insulation of clothing in different seasons of the year and in an annual course. During the year, the highest mean value of Iclp (1.4 clo in Koniczynka) corresponded to cyclonic situations with northerly advection, whereas the lowest value (0.8 clo in Toruń and Koniczynka) was observed for the anticyclonic wedge.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125517531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nutrients availability and hydrological conditions of selected wetland ecosystems in the Biebrza river valley 别布尔扎河流域湿地生态系统养分有效性及水文条件

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2015-03-01 DOI: 10.1515/sggw-2015-0010

M. Stelmaszczyk, T. Okruszko, P. Meire

{"title":"Nutrients availability and hydrological conditions of selected wetland ecosystems in the Biebrza river valley","authors":"M. Stelmaszczyk, T. Okruszko, P. Meire","doi":"10.1515/sggw-2015-0010","DOIUrl":"https://doi.org/10.1515/sggw-2015-0010","url":null,"abstract":"Abstract: Nutrients availability and hydrological conditions of selected wetland ecosystems in the Biebrza river valley. Paper presents results of investigation of hydrological conditions and nutrients limitation and availability for wetland vegetation in selected sites within Biebrza river valley. Analysed sites were overgrown by tall sedge Magnocaricion vegetation (Caricetum gracilis and Caricetum elatae), wet meadow Molinio-Arrhenatheretea vegetation (Molinietum caeruleae), and sedge-moss Scheuchzerio-Caricetea nigrae vegetation (Caricetum lasiocarpae). There were noted a close relationship between vegetation types, hydrological regimes and kind of nutrient limitation. Low productive Molinio-Arrhenatheretea and Scheuchzerio-Caricetea nigrae vegetations fed mainly by groundwater were limited by phosphorus, while highly productive Magnocaricion vegetation, fed by river water, was subjected to nitrogen limitation. We have found big diversification of groundwater and surface water levels within habitats of different vegetation types along the Biebrza river valley. Magnocaricion vegetation present on flooded areas is characterized by significant water level fluctuations and long-lasting inundations. On areas covered by Molinio-Arrhenatheretea vegetation we noted majority of water levels not exceeding the level of the ground surface. Whereas Scheuchzerio-Caricetea nigrae vegetation, fed by groundwater, is characterized by low variation of groundwater levels.","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131955930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Assessment of slope stability influenced by vegetation cover and additional loads applied 植被覆盖和附加荷载对边坡稳定性影响的评价

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2014-12-01 DOI: 10.2478/sggw-2014-0007

P. Osiński, Richmal J. Rickson, M. Hann, E. Koda

{"title":"Assessment of slope stability influenced by vegetation cover and additional loads applied","authors":"P. Osiński, Richmal J. Rickson, M. Hann, E. Koda","doi":"10.2478/sggw-2014-0007","DOIUrl":"https://doi.org/10.2478/sggw-2014-0007","url":null,"abstract":"Abstract Assessment of slope stability influenced by vegetation cover and additional loads applied. The article presents the results of research conducted in order to create nomographs allowing assessment of slope stability. The proposed recommendations involve graphs and charts, where factor of safety (FOS) is computed in according to six different characteristics: slope height and angle, slope surface vegetation cover, applied surcharge, position of water table, soil mechanical conditions. For the purpose of the research several geotechnical models and approaches were used and became a basis for developing simplified method of predicting the failure of natural and engineered slopes. The advantage of the solutions presented is their simplicity of use; as further FOS calculations are not required during the complex assessment of slope stability Streszczenie Ocena stateczności skarp przy uwzględnieniu wpływu okrywy roślinnej oraz przyłożonego obciążenia. W artykule przedstawiono wyniki prac podjętych w celu stworzenia nomogramów służących ocenie stanu bezpieczeństwa skarp. W wyniku podjętych prac badawczych i obliczeniowych opracowano zestawy tabel i grafów przedstawiających zależność współczynnika stateczności od wybranych sześciu parametrów skarpy: wysokość i nachylenie, wpływ okrywy roślinnej, przyłożone dodatkowego obciążenia, warunki geotechniczne i wpływ wody. Zaletą nomogramów jest prostota ich użytkowania, gdyż ocena stateczności nie wymaga dodatkowych obliczeń","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116693218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Using the River Habitat Survey method in forecasting effects of river restoration 用河流生境调查方法预测河流恢复效果

Annals of Warsaw University of Life Sciences, Land Reclamation Pub Date : 2014-12-01 DOI: 10.2478/sggw-2014-0011

M. Kiraga, Z. Popek

{"title":"Using the River Habitat Survey method in forecasting effects of river restoration","authors":"M. Kiraga, Z. Popek","doi":"10.2478/sggw-2014-0011","DOIUrl":"https://doi.org/10.2478/sggw-2014-0011","url":null,"abstract":"Abstract Using the River Habitat Survey method in forecasting effects of river restoration. Research presents usability of the River Habitat Survey (RHS) evaluation method in forecasting effects of the Zielawa River restoration, performed in selected section between 18 + 960 km and 19 + 460 km. The EU so-called Water Framework Directive signalizes necessity of achieving a good ecological status of European rivers in the immediate future. Accordingly, river restoration is the main tool for already technically regulated rivers’ quality upgrading. Present research contains a collation of four proposed restoration works variants and the ecological evaluation of chosen river reach before and after initiating restoration works in accordance to various variants, using the RHS method. The conclusion is fact, that in dependence of established variant it is possible to receive improvement of ecological class from present Class V to Class IV (variants 1 and 2) or Class III (variants 3 and 4) Streszczenie Prognozowanie efektów renaturyzacji rzeki z wykorzystaniem metody River Habitat Survey. W pracy przestawiono możliwość wykorzystania metody River Habitat Survey (RHS) do oceny przewidywanych efektów renaturyzacji rzeki Zielawy na odcinku między km 18 + 960 a km 19 + 460. Tak zwana Ramowa Dyrektywa Wodna nakłada konieczność osiągnięcia w najbliższym czasie przez rzeki europejskie dobrego stanu ekologicznego. Renaturyzacja rzek jest głównym narzędziem poprawy jakości rzek, uregulowanych według wymagań technicznych. W artykule przedstawiono propozycję renaturyzacji odcinka rzeki Zielawy według czterech wariantów robót oraz dokonano oceny, wykorzystując metodę RHS, wpływu tych prac na poprawę obecnego stanu hydromorfologicznego rzeki. Stwierdzono, że w zależności od przyjętego wariantu robót poprawa stanu odcinka rzeki jest możliwa z obecnej V klasy do IV klasy (warianty 1 i 2) lub III klasy (warianty 3 i 4).","PeriodicalId":169511,"journal":{"name":"Annals of Warsaw University of Life Sciences, Land Reclamation","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125143602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4