Impacts of riverbed aggradation on groundwater regime in a lowland area

IF 2.3 4区环境科学与生态学 Q3 WATER RESOURCES

Journal Of Hydrology And Hydromechanics Pub Date : 2024-05-09 DOI:10.2478/johh-2024-0002

Márta Koczka Bara, Renáta Dulovičová, Yvetta Velísková, Csilla Farkas

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Abstract

In this study, the influence of riverbed silting on the groundwater regime in a lowland area was investigated. The study area is situated at the Rye Island (Žitný Ostrov) in Slovakia, along the Gabčíkovo – Topoľníky canal, which is part of the drainage-irrigation canal system constructed in this locality. The Rye Island is an area with very low slope (0.25 10–4) and good climatic conditions for aquatic vegetation, therefore the canals are influenced by intensive silting processes. The spatial and temporal patterns of surface water – groundwater exchange are significantly influenced by the thickness of riverbed sediments and their permeability. The aim of this study was to evaluate the thickness and hydraulic conductivity of bed sediments in the Gabčíkovo – Topoľníky canal and to examine their influence on the groundwater – surface water interaction in the area. The hydraulic conductivity of the sediments was assessed from undisturbed samples by the falling head method. The obtained data were used for numerical simulations of groundwater heads by the TRIWACO model for different drainage and infiltration resistance conditions in the area of interest. The results of this study can support the planning of canal maintenance.

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河床侵蚀对低洼地区地下水系统的影响

本研究调查了河床淤积对低洼地区地下水系统的影响。研究区域位于斯洛伐克的黑麦岛（Žitný Ostrov），Gabčíkovo - Topoľníky运河沿岸。黑麦岛坡度很低（0.25 10-4），气候条件有利于水生植被生长，因此运河受到密集淤积过程的影响。地表水与地下水交换的时空模式受到河床沉积厚度及其渗透性的显著影响。本研究旨在评估加布奇科沃-托波ľníky 运河河床沉积物的厚度和水力传导性，并研究它们对该地区地下水-地表水相互作用的影响。沉积物的水力传导性是通过水头下降法对未受扰动的样本进行评估的。获得的数据用于 TRIWACO 模型对该地区不同排水和渗透阻力条件下的地下水水头进行数值模拟。这项研究的结果可为运河维护规划提供支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal Of Hydrology And Hydromechanics 环境科学-水资源

CiteScore

4.20

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： JOURNAL OF HYDROLOGY AND HYDROMECHANICS is an international open access journal for the basic disciplines of water sciences. The scope of hydrology is limited to biohydrology, catchment hydrology and vadose zone hydrology, primarily of temperate zone. The hydromechanics covers theoretical, experimental and computational hydraulics and fluid mechanics in various fields, two- and multiphase flows, including non-Newtonian flow, and new frontiers in hydraulics. The journal is published quarterly in English. The types of contribution include: research and review articles, short communications and technical notes. The articles have been thoroughly peer reviewed by international specialists and promoted to researchers working in the same field.