Archives of Hydroengineering and Environmental Mechanics最新文献_第3页

Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift 快速抬升作用下砂土中裙边基础试验研究

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2020-12-01 DOI: 10.1515/heem-2020-0002

M. Kulczykowski

引用次数: 4

Compound Channel’s Cross-section Shape Effects on the Kinetic Energy and Momentum Correction Coefficients 复合通道截面形状对动能和动量修正系数的影响

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2020-12-01 DOI: 10.1515/heem-2020-0004

Elham Ghanbari-Adivi

引用次数: 1

Distinct Element Simulation of a Landslide Process 滑坡过程的离散元模拟

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2020-12-01 DOI: 10.1515/heem-2020-0001

L. Zabuski, J. Mierczyński

引用次数: 0

Flow-induced Vibrations of a Horizontal Elastic Band Plate Submerged in Fluid of Finite Depth 水平弹性带板在有限深度流体中的流激振动

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-12-01 DOI: 10.1515/heem-2019-0007

K. Szmidt, B. Hedzielski

{"title":"Flow-induced Vibrations of a Horizontal Elastic Band Plate Submerged in Fluid of Finite Depth","authors":"K. Szmidt, B. Hedzielski","doi":"10.1515/heem-2019-0007","DOIUrl":"https://doi.org/10.1515/heem-2019-0007","url":null,"abstract":"Abstract The paper deals with forced vibrations of a horizontal thin elastic plate submerged in a semi-infinite layer of fluid of constant depth. The pressure load on this plate is induced by water waves arriving at the plate. This load is accompanied by pressure resulting from the motion of the plate. The plate and fluid motions depend on boundary conditions, and, in particular, the pressure load depends on the width of the gap between the plate and the bottom. In theoretical description of the phenomenon, we deal with a coupled problem of hydrodynamics in which the plate and fluid motions are coupled through boundary conditions at the plate surfaces. The main attention is focused on transient solutions of the problem, which correspond to fluid (and plate) motion starting from rest. In formulation of this problem, a linear theory of small deflections of the plate is employed. In order to calculate the fluid pressure, a solution of Laplace’s equation is constructed in a doubly connected fluid domain. With respect to the initial value problem considered, we confine our attention to a finite fluid domain. For a finite elapse of time, measured from the starting point, the solution in the finite fluid area mimics a solution within an infinite domain, inherent for wave propagation problems. Because of the complicated structure of boundary conditions of the coupled problem considered, the fluid domain is divided into sub-domains of simple geometry, and the solutions of the problem equations are constructed separately in each of these domains. Numerical experiments have been conducted to illustrate the formulation developed in this paper.","PeriodicalId":53658,"journal":{"name":"Archives of Hydroengineering and Environmental Mechanics","volume":"66 1","pages":"101 - 130"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49116124","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: 0

Construction of Pressure Tunnels 压力隧道的施工

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-12-01 DOI: 10.1515/heem-2019-0006

L. Zabuski

引用次数: 0

Modeling the Impact of Riparian Vegetation on Flow Structure and Bed Sediment Distribution in Rivers 河岸植被对河流水流结构和床沙分布影响的建模

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-12-01 DOI: 10.1515/heem-2019-0005

M. Morri, A. Soualmia

{"title":"Modeling the Impact of Riparian Vegetation on Flow Structure and Bed Sediment Distribution in Rivers","authors":"M. Morri, A. Soualmia","doi":"10.1515/heem-2019-0005","DOIUrl":"https://doi.org/10.1515/heem-2019-0005","url":null,"abstract":"Abstract The effect of instream vegetation growth has largely been ignored by hydrological and geomorphological research in river environments, which focused instead on the function of riparian vegetation as a regulator of bank stability or as a buffer for dissolved and particulate matter entering the channel from the hillside. However, in many lowland streams, instream vegetation can be very intensive, resulting in high biomass levels during the growing season. Instream plants have a significant influence on the dynamics of flow, sediment, and nutrients. Plant growth can cause increased frictional resistance to flow and can have a short-to medium-term effects on the geomorphology of the channel. Additionally, plant development influences the velocity of river flow, affects sedimentation dynamics and increases flood risk. To achieve a balance between flooding and ecological management of rivers in the presence of vegetation, a reliable method is required to predict the resistance of channels. In the current study, a two-dimensional hydrodynamic and morphodynamic model is developed and applied using a new scaling expression of shear stress based on vegetation characteristics. These first attempts at field simulations showed qualitatively acceptable results and demonstrated the effectiveness of the model in predicting hydraulic parameters in the presence of vegetation. This model is useful in predicting the effect of vegetation on stream flow and river morphology, as well as in managing flood hazards and stream ecology.","PeriodicalId":53658,"journal":{"name":"Archives of Hydroengineering and Environmental Mechanics","volume":"66 1","pages":"59 - 75"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48523086","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: 0

Experimental Study of the Effectiveness of a Combined Closure of the End Gate Pipeline Valve 端闸阀组合关闭效果的实验研究

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-06-01 DOI: 10.1515/heem-2019-0001

Henrikh H. Herasymov, Ievgenii Gerasimov, S. Ivanov, Oleg Pinchuk

引用次数: 1

Identification of the Causes of a Landslide in Koronowo (Polish Lowlands) 科罗诺沃(波兰低地)山体滑坡原因查明

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-06-01 DOI: 10.1515/heem-2019-0004

L. Zabuski, M. Kulczykowski, W. Świdziński

{"title":"Identification of the Causes of a Landslide in Koronowo (Polish Lowlands)","authors":"L. Zabuski, M. Kulczykowski, W. Świdziński","doi":"10.1515/heem-2019-0004","DOIUrl":"https://doi.org/10.1515/heem-2019-0004","url":null,"abstract":"Abstract The paper discusses difficulties of identifying the causes of a landslide. These difficulties are illustrated in the example of a catastrophic landslide on the embankment of the western bank of the Brda River, which affected a bridge abutment of a disused narrow-gauge railway line from Bydgoszcz to Koronowo (Polish Lowlands). The railway was closed in 1992, and after the removal of the track, the bridge served as a pedestrian overpass. The landslide occurred in February 2011. Investigations revealed that the first signs of the landslide were cracks and subsidence that appeared at the embankment crest. Then, an initially slow movement accelerated suddenly, resulting in an over 45 m total displacement of the soil mass. The primary passive cause of the landslide movement resulted from the geology of the mass (loose soils underlain by cohesive soils) and from the steep inclination of the embankment surface. Active causes, however, are often ambiguous. In this case, no significant apparent phenomena which could trigger the movement occurred in the days preceding its initiation. Therefore, a detailed analysis of atmospheric conditions was carried out to identify and explain the causes. It was proved that the fundamental triggering cause of the landslide was a combination of rainfall, snowfall, snow-melting and air temperature. Moreover, an important cause was a faulty construction of a ditch with a sewage pipe on the crest of the embankment.","PeriodicalId":53658,"journal":{"name":"Archives of Hydroengineering and Environmental Mechanics","volume":"66 1","pages":"47 - 56"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41662621","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: 0

Three-Dimensional Analysis of a Landslide Process on a Slope in Carpathian Flysch 喀尔巴阡复理石坡面滑坡过程的三维分析

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-06-01 DOI: 10.1515/heem-2019-0003

L. Zabuski

{"title":"Three-Dimensional Analysis of a Landslide Process on a Slope in Carpathian Flysch","authors":"L. Zabuski","doi":"10.1515/heem-2019-0003","DOIUrl":"https://doi.org/10.1515/heem-2019-0003","url":null,"abstract":"Abstract The paper presents a 3D (spatial) analysis of deformation processes in the landslide slope Bystrzyca in Szymbark near Gorlice (Low Beskid – Carpathians; N 49°37′ 09″, E 21°05′ 49″) carried out by the computer code FLAC3D based on the finite difference method. The numerical analysis was performed to determine the influence of the orientation of layers and discontinuities and of hydrogeological conditions on slope deformations and the failure mechanism during sliding processes. The massif is modeled as an elasto-plastic medium obeying the Coulomb-Mohr criterion. Two variants of hydrogeological conditions are analyzed, namely the “dry slope” (without water) and the “wet slope” (entirely saturated). The influence of the orientation of discontinuities (modeled as “ubiquitous”) on the landslide mechanism is investigated as well. Few orientations of discontinuities with respect to the dip direction of the slope surface are considered, namely consequent, insequent, and subsequent (two variants in each case). The results show a clear impact of the pattern of discontinuities and hydrogeological conditions on the deformational behavior of the landslide and the shape of the slip surface. The 3D approach and results of the numerical simulation of the landslide movement prove the necessity of 3D modeling in some cases.","PeriodicalId":53658,"journal":{"name":"Archives of Hydroengineering and Environmental Mechanics","volume":"66 1","pages":"27 - 45"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43842899","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: 5

Impact of Natural Disasters on Water Resources in Georgia Caused by Global Warming 全球变暖导致的自然灾害对格鲁吉亚水资源的影响

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2019-06-01 DOI: 10.1515/heem-2019-0002

N. Kandelaki, I. Iordanishvili, A. Ujma, I. Iremashvili, Konstantin Iordanishvili, Shorena Kupreishvili, V. Shurghaia, Giorgi Natroshvili

引用次数: 1