Virtual Analysis of the Mining Support under Loads of the Roof

Abstract:

The paper presents the results of virtual analysis of the stability of mining roof supports loaded by the roof rocks. The hydraulic roof support generally accounts for over 50% of the total value of a coal mining and excavating system. Many reports show that in some conditions roof supports behave differently than foreseen. To explain this phenomena the investigations basing on the virtual model were done [1,2]. This phenomena is very dangerous for miners because this behaviour of a mining roof support may cause dangerous accidents in coal mines. In the investigation process some questions have been asked. Firstly what type of a mining support is more liable to this behaviour. Secondly what work conditions are the most dangerous. To analyse this phenomena it was used models of two types of a mining support. One with two props and one with four ones. Results show that that the problem of plunged of roof parts of a support in the coal bed is consider with the construction of the support. The most dangerous is the roof support with two props. The consequences of this results are the recommendations to use rather supports with four props then two.

• Periodical: Advanced Materials Research (Volume 837)
• Pages: 393-398
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.837.393
• Online since: November 2013
• Authors: Aleksander Gwiazda
• Keywords: Hydraulic Roof Support, Stability, Virtual Analysis

References

[1] A. Dymarek, T. Dzitkowski, K. Herbuś, G. Kost, P. Ociepka, The simulator for teaching how to drive a car for people with disabilities. Solid State Phenomena, 198 (2013), pp.59-64.

DOI: 10.4028/www.scientific.net/ssp.198.59

[2] M.P. Hetmanczyk, P. Michalski, J. Świder, Utilization of advanced self-diagnostic functions implemented in frequency inverters for the purpose of the computer-aided identification of operating conditions, Journal of Vibroengineering 14 (2012).

[3] Chudek M., Pach A.: The support of long walls in hard coal mines ,: Silesian University Publishing, Gliwice 2002 (in Polish).

[4] A. Dymarek, T. Dzitkowski, Method of active synthesis of discrete fixed mechanical systems, Journal of Vibroengineering. 14/2 (2012), pp.458-463.

[5] M. P. Hetmańczyk, The Reliability Model of a AC-Asynchronous Drive Based on the Multilevel Prognosis System Based on Matrices and Digraphs Methods, Solid State Phenomena Mechatronic Systems and Materials 199 (2013), pp.85-90.

DOI: 10.4028/www.scientific.net/ssp.199.85

[6] J. Świder, M. Hetmańczyk, Hardware and software integration of mechatronic systems for an example measurement path for temperature sensors, [in: ] Gosiewski Z., Kulesza Z. (eds. ): Solid State Phenomena Mechatronic Systems and Materials. Trans Tech Publications, Vol-147-149, Stafa-Zurich 2009, pp.676-681.

DOI: 10.4028/www.scientific.net/ssp.147-149.676

[7] I. Chuchnowska,  A. Sękala: The concept of an interactive device for children's lower limbs rehabilitation. Solid State Phenomena, 198 (2013), pp.594-599.

DOI: 10.4028/www.scientific.net/ssp.198.594

[8] A. Gwiazda, Technical project management using quality methods, Journal of Achievements in Materials and Manufacturing Engineering, 31/2 (2008), pp.739-746.

[9] Gwiazda A., Multi-criterion Analysis Technique in a Process of Quality Management, Journal of AMME 25/1 (2007), pp.75-78.

[10] Gwiazda A., Knosala R., Group Technology Using Neural Nets, Journal of Materials Processing Technology 64 (1997), pp.181-188.

DOI: 10.1016/s0924-0136(96)02566-6

[11] J. Ćwiek, J. Łabanowski, S. Topolska, M. Sozańska, Determination of failure causes of a steam turbine casting, Solid State Phenomena, 183 (2012), pp.37-42.

DOI: 10.4028/www.scientific.net/ssp.183.37