Browsing by Author "Marschalko, Marian"

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Access status: Open Access ,
Evaluation of terrain subsidence in relation to the engineering-geological zones in a territory of the Ostrava-Karviná District affected by mining
(Wydawnictwa AGH, 2010) Marschalko, Marian; Peňáz, Tomáš; Duraj, Miloš
The study deals with the evaluation of terrain subsidence (isocatabases) as one of the most important manifestations of mining exploitation. Development of human activities in various spheres of interest occurs also in such affected landscapes. In terms of the engineering geology there is a need for subsidence development assessment in time in relation to the engineering-geological zones representing the geological environment with similar characteristics. It's very essential for the foundation engineering. Overlay analyses in the Geographic Information Systems of the stated factors bring the necessary information for land-use decision-making and planning. The case study in the selected part of the Karviná section of the Ostrava-Karviná District (map sheet 15-44-02) was implemented in the cadastral district of the town of Orlova in the north-east of the Czech Republic.
Access status: Open Access ,
Former mining area in terms of subsidence caused by undermining and slope movements in the localities of Slezská Ostrava, Vítkovice and Radvanice
(Wydawnictwa AGH, 2008) Marschalko, Marian; Juriš, Peter
The paper deals with some selected engineering-geological conditions for the needs of landscape planning. The geofactors to be studied are numerous (engineering-geological zones, workability of rocks, type of preQuarternary bedrock, floodlands, surface subsidence (caused by undermining), slope movements and radon hazard), while the paper deals with two of them. The first one is undermining, which is evaluated on the basis of terrain subsidence caused by underground mining. It is a significant criterion for the utilization of former mining landscape that is as an interest area the subject of the study. The area is determined by a map sheet No. 15-43-10 in 1:10 000 scale, covering the city districts of Slezská Ostrava, Moravska Ostrava, Vítkovice and Radvanice. The second monitored geofactor is slope deformation. There is an important limiting factor for land use and it must not be ignored during landscape planning. The study is motivated by an insufficient consideration of such information during landscape planning, issuing building permits, etc.
Access status: Open Access ,
Possible impact of current and former mining activities on a research locality in the Ostrava - Karvina District
(Wydawnictwa AGH, 2009) Marschalko, Marian; Třeslín, Lubomír; Fuka, Matej
The paper deals with a study of black coal underground mining activity impact (working district of Poruba and Lazy) on the locality on which current activity of ground morphology change is manifested, which was earlier attributed to the manifestations of older slope deformation. However, the method of geotechnical monitoring using the method of precise inclinometry combined with isocatabase maps in chronological order, ground deformation parameters and geophysical measuring proved the connection of this activity with the existence of discontinuous deformations formed due to undermining in the Ostrava - Karvina District, a significant mining region in the north-east of the Czech Republic. Localization of inclinometric measuring on holes in the active part as well as in near vicinity was important, which in case of inclination of both holes is evidence of undermining impact. During the monitored period dilatation of the ground surface occurred, which shows on a discontinuous deformation in the convex part of the subsidence trough slope. This fact probably causes changes in the state of stress from undermining, which may influence the formation of those phenomena. The application of such a methodology proved as optimal and can be recommended for other purposes in relation to undermining impacts.