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1 Studia Geotechnica et Mechanica

1 2009

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The impacts of underground mining as a possible factor affecting the Doubrava Oplíží slope movement activity

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Marschalko M. , Třeslín L. , Fuka M.

Studia Geotechnica et Mechanica

2009

tom Vol. 31, nr 4

39-47

The locality of Doubrava Oplíží is one of the landslides within an extensive slope front situated between the municipalities of Doubrava and Dětmarovice in the Moravian-Silesian Region and at the same time, in the allotment of Karviná Mine, ČSA Plant. The slope deformation stability was assessed in terms of the impacts of underground mining making use of isocatabase maps, terrain deformation parameter values determining the group of building sites subject to ČSN 73 0039, movements measured by zone extensometry and rainfall totals. The assessment of rainfall totals as well as a generally significant factor influencing the mobility of landslides did not identify any reaction in the measured movements of the slope deformation. The maps of subsidence caused by underground mining revealed a concordant declination of the slope deformation with the subsidence basin slope inclination that shall further increase according to the prospective maps till 2010. Thus, it is the case of the least favourable impact of the subsidence basin on the slope deformation when its inclination is being enhanced. Similar conclusions may also be drawn from the development of terrain deformation parameter values. Whereas in 2005 the slope deformation was in the 4th group of building sites, in 2010 its upper part will have been in the 3rd and the lower part in the 2nd group of building sites. In all probability, this fact shall similarly reduce the degree of landslide stability, which will jeopardize a road and parallel underground services running along the lower side.