ANALYSIS OF EARTHQUAKES AVAILABLE INFLUENCE ON „ESTONIA” MINE UNDERGROUND CONSTRUCTION STABILITY
DOI:
https://doi.org/10.17770/etr2007vol1.1734Keywords:
earthquake, mining block, pillar, roof, stability, risk estimationAbstract
The processes of immediate roof exfoliation and pillars collapse accompanies by significant subsidence of the ground surface. Ground surface subsidence causes soil erosion and flooding, swamp formation, agricultural damage, deforestation, changes in landscape, ground water level decreasing and the formation unstable cavities. During experimental measurement of immediate roof absolute deformation on "Estonia" mine three earthquakes were registered. The main reason of investigation has served jumping characteristic of absolute deformation near a pillar after earthquake. Method of final elements for analysis of deformation modelling is used. Seismic risk assessment for underground constructions stability is presented in this study.
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