The influence of rock mass disturbance on surface subsidence in urban areas

Tadeusz Majcherczyk; Katarzyna Kryzia; Zbigniew Niedbalski

Titles

Abstract

This paper presents an analysis of the parameters of surface deformation prediction theory carried out for a hard coal mine in the Upper Silesian Coal Basin. Two areas of the coal mine were used as the subject of this analysis – in these areas, underground mining with roof caving was carried out in similar geological conditions for various numbers of seams, and consequently, for various rock mass disturbance rates. In order to estimate the parameters of the surface deformation prediction theory, i.e. the exploitation coefficient and the angle of the main range of influences, geodesic measurements of subsidence along the observation lines were used. The study shows that rock mass disturbance affects the values of the Knothe theory parameters and the values of the surface deformation indicators. In the case of a larger number of selected seams, the determined value of the exploitation coefficient was larger than the determined value in the case of a less disturbed rock mass. Assuming inappropriate parameters for surface subsidence prediction may cause unexpected damage to surface objects.

Keywords

mining, intensity of exploitation, surface deformation, subsidence prediction

Information

Information: Technical Transactions, 2018, Volume 5 Year 2018 (115), pp. 83-93

DOI: https://doi.org/10.4467/2353737XCT.18.075.8557

Article type: Original article

Titles:

Polish:

The influence of rock mass disturbance on surface subsidence in urban areas

English:

The influence of rock mass disturbance on surface subsidence in urban areas

Authors

Tadeusz Majcherczyk

Department of Geomechanics, Civil Engineering and Geotechnics, Faculty of Mining and Geoengineering, AGH University of Science and Technology

Katarzyna Kryzia

https://orcid.org/0000-0001-7693-107X

AGH University of Science and Technology, Adama Mickiewicza 30, 30-059 Cracow, Poland

Zbigniew Niedbalski

Department of Geomechanics, Civil Engineering and Geotechnics, Faculty of Mining and Geoengineering, AGH University of Science and Technology

Published at: 25.05.2018

Article status: Open

Licence: None

Percentage share of authors:

Tadeusz Majcherczyk (Author) - 33%

Katarzyna Kryzia (Author) - 33%

Zbigniew Niedbalski (Author) - 34%

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Publication languages:

English

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