Stability analysis of underground mining openings with complex geometry

Open access


Stability of mining openings requires consideration of a number of factors, such as: geological structure, the geometry of the underground mining workings, mechanical properties of the rock mass, changes in stress caused by the influence of neighbouring workings. Long-term prediction and estimation of workings state can be analysed with the use of numerical methods. Application of 3D numerical modelling in stability estimation of workings with complex geometry was described with the example of Crystal Caves in Wieliczka Salt Mine. Preservation of the Crystal Caves reserve is particularly important in view of their unique character and the protection of adjacent galleries which are a part of tourist attraction included in UNESCO list. A detailed 3D model of Crystal Caves and neighbouring workings was built. Application of FLAC3D modelling techniques enabled indication of the areas which are in danger of stability loss. Moreover, the area in which protective actions should be taken as well as recommendations concerning the convergence monitoring were proposed.

[1] Mortazavi A., Hassani F.P., Shabani M.M., A numerical investigation of rock pillar failure mechanism in underground openings, Comput. Geot., 2009, 36, No. 5.

[2] Jing L., Hudson J.A., Numerical methods in rock mechanics, Int. J. Rock Mech. Mining Sci., 2002, 39, No. 4.

[3] Jing L., A review of techniques, advances and outstanding issues in numerical modelling for rock mechanics and rock engineering, Int. J. Rock Mech. Mining Sci., 2003, 40, No. 3.

[4] Chen L., Duveau G., Poutrel A., Jia Y., Shao J.F., Xie N., Numerical study of the interaction between adjacent galleries in a high-level radioactive waste repository, Int. J. Rock Mech. Mining Sci., 2014, 71.

[5] Wang L., Bérest P., Brouard B., Mechanical Behavior of Salt Caverns: Closed-Form Solutions vs Numerical Computations, Rock Mech. Rock Eng., 2015, 48, No. 1.

[6] Wang T., Yang C., Yan X., Li Y., Liu W., Liang C., Li J., Dynamic response of underground gas storage salt cavern under seismic loads. Tunnelling and Underground Space Technology, 2014, No. 43.

[7] Zhang G., Wu Y., Wang L., Zhang K., Daemen J.J.K., Liu W., Time-dependent subsidence prediction model and influence factor analysis for underground gas storages in bedded salt formations, Eng. Geol., 2015, No. 187.

[8] Swift G.M., Reddish D.J., Underground excavation in rock salt, Geot. Geol. Eng., 2005, No. 23.

[9] Chmura J., Bednarczyk J., Brzeźniak E., Charkot J., Chmura Ł., Lasoń A., Mikoś T., Pawlikowski M.M., Projekt planu ochrony podziemnego rezerwatu przyrody „Groty Kryształowe” w Kopalni Soli Wieliczka, [Conservation plan of underground natural reserve “Crystal Caves” in Wieliczka Salt Mine], Fundacja „Nauka i Tradycje Górnicze”, 2009, (in Polish).

[10] Aleksandrowicz Z., (ed.), Crystal Caves in the Wieliczka Salt Mine, Studia Naturae, 2000, No. 46 (2000)

[11] Gaweł A., Budowa geologiczna złoża solnego Wieliczka, [Geological structure of Wieliczka Salt Mine], Prace Instytutu Geologicznego 30, 1962, No 3, (in Polish).

[12] Kolasa K., Ślączka A., Sedimentary salt megabreccia exposed in the Wieliczka Mine, (Fore Carpathian Depression), Acta Geologorum Polonae, 1985, 35, No. 3/4.

[13] Ślączka A., Kolasa K., Resedimented salt in the Northern Carpathians Foredeep, (Wieliczka, Poland), Slovak Geological Magazine, 1997, 3, No. 2.

[14] Lamarche J., Structural geology in the Wieliczka salt mine, Internal Report, Wieliczka Salt Mine, 1997.

[15] Poborski J., Historyczny rozwój poglądów na budowę geologiczną złoża solnego Wieliczki, [Historical development of ideas about the geological structure of Wileiczka Salt Mine], Studia i Materiały do Dziejów Żup Solnych w Polsce, 1965, No. 1, (in Polish).

Studia Geotechnica et Mechanica

The Journal of Wrocław University of Science and Technology and AGH University of Science and Technology

Journal Information

CiteScore 2018: 1.03

SCImago Journal Rank (SJR) 2018: 0.213
Source Normalized Impact per Paper (SNIP) 2018: 1.106


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 304 138 6
PDF Downloads 180 113 4