Browsing by Subject "expressway"

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Access status: Open Access ,
Assessing the impact of expressway construction and operations on groundwater intake
(Wydawnictwa AGH, 2023) Łukańko, Łukasz; Macuda, Jan
Wydział Wiertnictwa, Nafty i Gazu
Expressways represent significant public investments contributing to the socio-economic development of a country. However, their construction and operations exert detrimental effects stemming from the road surface onto the adjacent groundwater environment. To mitigate these adverse environmental consequences, extant legal restrictions are factored in during the expressway design phase, accompanied by the implementation of modern technical and organizational solutions. As a pivotal legal instrument, the environmental impact assessment is mandated in the procedural framework for obtaining approval on environmental conditions during expressway construction. The precision in evaluating the negative impact of an expressway on distinct environmental elements hinges on the depth of the assessment, influencing the nature and extent of planned protective measures. In many instances, supplementary environmental risk assessments are conducted to bolster the investment process. This study aims at discerning the specific impact of expressway construction on nearby groundwater intake. To achieve this, an exhaustive assessment of contaminant migration times from the land surface to the aquifer and within the aquifer itself was executed. Subsequently, a proposal for aquifer monitoring was formulated based on the findings to enable the early detection of potential shifts in groundwater quality, facilitating timely preventive interventions.
Access status: Open Access ,
Expected geotechnical problems on expressway R4 in East Slovakia
(Wydawnictwa AGH, 2009) Kopecký, Miloslav
Today Slovakia has experienced an unprecedented boom in preparation and construction of road network, especially preparation and following construction of expressways and highways. Among the projects under design in the Eastern Slovakia an important task is also N-S interconnection by an expressway R4 from the border with Poland to the border with Hungary. The section proposed at the Slovak territory will attain a total length of 108 km. Engineering geological investigations for most of the R4 expressways sections is already done and the sections are prepared for constructions. The investigations were performed for selection of the best variant for construction and it proved that the expected geotechnical problems will be limiting for the construction. However, the greatest risk comes from the landslide occurrence, especially in the zone of the outer flysch zone, through which the northern part of the R4 leads. The article presents in detail one selected variant of R4 expressway, where the landslides played the most important role for the selection as well as the occurrence of mineral springs which could be threatened. Recently, from the whole R4 expressway only by-pass road around Svidnik is under construction, where in some places with landslide occurrences the expressway objects were threatened.