Abstract
The article presents the results of field studies and laboratory tests of the subsoil of the section of the „Łagiewnicka” route located on the area of so-called “White Seas” [1] in Kraków-Łagiewniki. The analysed samples come from the layer of anthropogenic soils being the result of the operation of the Solvay Sodium Plant in the 20th century. The results of the geotechnical and land-surveying studies served as the basis for developing a numerical model to determine the pressure on the walls of the planned tunnel and the horizontal thrust in the planned excavation. Besides, the study and test results were used to perform an analysis of the excavation’s stability and to check the impact of the sheet pile on land deformations near the John Paul II Centre in Kraków.
Highlights
The construction of so-called “Łagiewnicka Route” means the construction of a road section totalling 3.5 km in length
With the application of appropriate support of the cavity wall, the analysis demonstrated the overall effectiveness of the alternative which was adopted, as a result of which the land in the neighbourhood of the CJPII will not be subject to excessive deformations
The paper presents the results of field studies and laboratory studies and tests of the parameters of soils from the production waste heap on the area of the defunct Solvay Sodium Plant in Kraków
Summary
The construction of so-called “Łagiewnicka Route” means the construction of a road section totalling 3.5 km in length. The Łagiewnicka Route is part of so-called “III Krakow Ringroad” and the construction of the whole section is planned for 2018-2020. Due to the planned construction of a road tunnel, located in part on the anthropogenic soils of the “White Seas”, a study and analysis were performed of the possibilities to make an excavation and the tunnel itself and of the impact of the works on the surroundings. Since the tunnel construction work was done using the cut-and-cover method, at the section of the Łagiewnicka Route concerned, an attempt was made to assess the impact of the earthworks on the behaviour of the anthropogenic soils and the negative impact of the excavation on the John Paul II Centre in Kraków. The analyses served the purpose of presenting the results of the land deformation parameters on the area of the “White Seas”
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