What were the reasons for the rapid landslide occurrence in “Piaseczno” open pit? – analysis of the landslide process

• Autorzy: Jakóbczyk J. , Cała M. , Stopkowicz A.

Identyfikatory

DOI

10.1515/sgem-2015-0004

• Języki publikacji: EN

Abstrakty

EN

Landslides are major natural hazards occurring in opencast mining. The problem of slope stability failure in the existing open pit mines as well as in those which are at a stage of technical closure is current issue in Poland and all over the world. This problem requires conducting in-depth and meaningful analysis which will identify the causes of processes characterized by a very rapid course and large extent. The paper presents the analysis of the landslide causes, which took place on May 11, 2011 on the western slope of the internal dump in “Piaseczno” sulphur mine (at a stage of technical closure). It was the first native sulphur open pit mine in Poland in which the exploitation was carried out from 1958 untill 1971. Reclamation works have been ongoing since 2005. The aim of these works is to create water body which will be used for recreational purposes. During the reclamation works on the western slope of “Piaseczno” reservoir the landslide processes were activated. A detailed description of geology and preliminary analyses of landslide processes are given in [1]. The development of landslide took place in a very violent manner. Moreover, the occurrence of the landslide caused the movement of the reservoir shoreline by about 350 meters and created a bay with the area of approximately 6 hectares. Displacement of 600 000 m3 of soil masses under the water resulted in its level rising by 56 cm. The total volume of ground masses was over 1 million m3. The analysis of the landslide process activation was carried out for two representative cross-sections of the internal dump. Numerical calculations were performed using the Limit Equilibrium Method (SLOPE/W GeoStudio) and the Finite Difference Method using the Shear Strength Reduction Method (FLAC Slope). They were aimed at determining the shape and extent of potential slip surface, which would correspond to the observed landslide. The purpose of the analysis, the results of which are presented in the article, was to define how the process proceeded and what factors contributed to its activation.

Słowa kluczowe

EN

landslide; open pit mine; slope stability analysis; numerical modelling; limit equilibrium method; LEM; shear strength; Reduction Method; SSRM

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2015
• Tom: Vol. 37, nr 1
• Strony: 25--35
• Opis fizyczny: Bibliogr. 7 poz., tab., rys.

Twórcy

autor

Jakóbczyk J.

• AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Cała M.

• AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Stopkowicz A.

• AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

• [1] FLISIAK J., FRANKOWSKI Z., HAŁADUS A., MAJER E., KOWALSKI M., PIETRZYKOWSKI P., RYBICKI S., Development and causes of the landslide in a water reservoir escarpment, the former “Piaseczno” sulphur open-cast mine (Rozwój i określenie przyczyn osuwiska na skarpie zbiornika wodnego po odkrywkowej kopalni siarki „Piaseczno”), Przegląd Geologiczny, 2014, 62(4), 190–197. ISSN 0033-2151.
• [2] Polish Geological Institute, National Research Institute, Documentation of Geology-Engineering to determine the causes of landslides on the western slope of the Piaseczno tank formed in the internal dump soils of the Piaseczno sulphur mine (Dokumentacja Geologiczno-Inżynierska w celu ustalenia przyczyn powstania osuwiska na zachodniej skarpie zbiornika „Piaseczno” uformowanej w gruntach zwałowiska wewnętrznego byłej kopalni siarki „Piaseczno”), Warsaw 2011, (in Polish).
• [3] STEIAKAKIS E., KAVOURIDIS K., MONOPOLIS D., Large scale failure of the external waste dump at the “South Field” lignite mine, Northern Greece, Engineering Geology, 2008, 104 (3–4), 269–279. DOI: 10.1016/j.enggeo.2008.11.008.
• [4] WICHTER L., Stabilisation of old lignite pit dumps in Eastern Germany, Bulletin of Engineering Geology and the Environment, 2006, 66, 45–5. DOI: 10.1007/s10064-006-0051-4.
• [5] Sulphur Mine Machów, (2006), History. Retrieved January, 2012, from http://www.ksmachow.pl/pl/historia,5.html
• [6] JAKÓBCZYK J., Analysis of the causes of the landslide occurrence in the excavation of the “Piaseczno” sulphur mine (in a stage of technical closure) (Analiza przyczyn powstania osuwiska w wyrobisku likwidowanej kopalni siarki „Piaseczno”), M.Sc. thesis, AGH University of Science and Technology, Faculty of Mining and Geoengineering, 2012, (in Polish).
• [7] CAŁA M., VON BISMARCK F., ILLING M., Geotechnical and environmental aspects of reclamation and revitalisation of post-mining areas in Poland and Germany (Geotechnische und Umweltaspekte bei der Rekultivierung und Revitalisierung von Bergbaufolgelandschaften in Polen und in Deutschland – Geotechniczne i środowiskowe aspekty rekultywacji i rewitalizacji obszarów pogórniczych w Polsce i w Niemczech), Wydawnictwa AGH, Kraków 2014, ISBN: 978-83-7464-721-2.