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Modeling of land subsidence caused by salt cavern convergence applying Knothe’s theory

Hejmanowski R., Malinowska A. A., Kwinta A., Ulmaniec P.

Prace Instytutu Mechaniki Górotworu PAN

2018

T. 20, nr 2

87--94

It has been years since Knothe’s theory was used for modeling deformations and strains generated in the rock mass and on the surface for various types of raw minerals, salt including. The qualitative congruence of the Knothe’s model with the observed form of subsidence in the salt mine areas can be proved in all places where such observations were made. In Poland, subsidence troughs accompanying salt domes are monitored in Wieliczka, Bochnia, Kłodawa and Sieroszowice. Based on many years’ surveys in the Wieliczka mine proper mathematical model, calculation algorithm and parametrization method could be selected. The usability of theoretical formulas originally written for coal beds was verifi ed on the example of a historical salt mine. The present functionality of modifi ed Knothe’s model was shown for salt rock on the example of predictions of vertical deformations and strains in the „Wieliczka” Salt Mine.