Numerical modelling of a void behind shaft lining using FDM with a concrete spalling algorithm

• Autorzy: Bock S.

Identyfikatory

DOI

10.7424/jsm140203

• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the research presented in this paper was to determine the impact of voids behind the lining on shaft stability. Methods: This paper presents an example of extending the FLAC3D with the possibility of the simulation of concrete detachment and separation under specific conditions by means of a developed FISH routine. Results: The appearance of voids and cavities behind the lining has been repeatedly observed in active shafts in Polish coal mines and can lead to the emergence of tensile forces in the lining. The study included 366 models of shafts using the rock mass properties of typical shale stone, coal, and sandstone found in the Upper Silesian Coal. Practical implications: The presented concrete spalling algorithm may be used, especially, for the stability evaluation of locally damaged shaft lining or when there is a suspicion of void behind the lining. Originality/ value: An important limitation of all continuous methods is the inability (except when using some additional tools) to simulate the rotations of predefined elements (blocks) and their separation from the rest of the object. The concrete spalling algo-rithm presented extends the capabilities of FLAC3D with the possibility of simulating the detachment and separation of destroyed lining fragments.

Słowa kluczowe

EN

mine shaft; shaft lining; numerical modelling; material modelling; FDM

PL

zbrojenie szybowe; obudowa szybu; modelowanie numeryczne; modelowanie materiałów; FDM

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2014
• Tom: Vol. 13, iss. 2
• Strony: 14--21
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Bock S.

• Department of Extraction Technologies and Mining Support, Central Mining Institute (Katowice, Poland)

Bibliografia

• 1. Bock, S., Prusek, S., Rotkegel, M. (2009). Design and Control of Working Support in Polish Coal Mines Based on Three-Dimensional Numerical Modeling. In 28th International Conference on Ground Control in Mining (pp. 113–120). Morgantown, W. VA: Dept. of Mining Engineering.
• 2. Fakhimi, A., Salehi, D., Mojtabai, N. (2004). Numerical back analysis for estimation of soil parameters in the Resalat Tunnel project. Tunnelling and Underground Space Technology, 19(1), 57–67.
• 3. FLAC3D v3.1: User Manual. Itasca Consulting Group, Minneapolis, MN, USA.
• 4. Genis, M., Gercek, H. (2003). A numerical study of seismic damage to deep underground openings. In International Society for Rock Mechanics, 10th Congress “Technology roadmap for Rock Mechanics” (pp. 351–356). Marshalltown: The Southern African Institute of Mining and Metallurgy.
• 5. Jing, L. (2003). A review of techniques, advances and outstanding issues in numerical modelling for rock mechanics and rock engineering. International Journal of Rock Mechanics & Mining Sciences, 40(3), 283–353.
• 6. Karacan, C.Ö., Esterhuizen, G.S., Schatzel, S.J., Diamond, W.P. (2007). Reservoir simulation-based modeling for characterizing longwall methane emissions and gob gas venthole production. International Journal of Coal Geology, 71(2-3), 225–245.
• 7. Lecomte, A., Salmon, R., Yang, W., Marshall, A., Purvis, M., Prusek, S., Bock, S., Gajda, L., Dziura, J., Niharra Munoz, A. (2012): Case studies anad analysis of mine shafts incidents in Europe. In 3rd International Conference on Shaft Design and Construction, London 2012. Tunnels and Tunnelling International, (1 May), 60–65.
• 8. Prusek, S., Rotkegel, M., Bock, S., Szymała, J. (2011). Evaluation of technical state of mining shafts lining. Schriftenreihe des Institutes für Geodäsie und der Technischen Universität Bergakademie Freiberg, (2011-1), 201–209.
• 9. Prusek S., Bock S., Uszko M., Dziura J. (2013). Selected methods for shaft lining repairs in Polish coal mines. In: Conference Proceedings of 32rd World Mining Congress, Montreal, Canada.
• 10. Wisser, C., Augarde, C.E., Burd, H.J. (2005). Numerical modelling of compensation grouting above shallow tunnels. International Journal for Numerical and Analytical Methods in Geomechanics, 29(5), 443–471. Wisser, C., Augarde, C.E., Burd, H.J. (2005). Numerical modelling of compensation grouting above shallow tunnels. International Journal for Numerical and Analytical Methods in Geomechanics, 29(5), 443–471.