Summary
Conditions under which dynamic loads occur in mines are briefly described and the special vulnerability of roadways in coal mines to fail under dynamic load is considered. A method for assessment of shock load energy anticipated is proposed, based on the volume of rock and the velocity of rock particles induced by rapid rock failure and/or seismic tremors. Case examples from Upper Silesian coal mines are given and the safety factor of steel supports against the shock energy from rockbursts is discussed. The shock energy damping ability of various parts of steel supports and support systems is calculated as a basis for rational support design. Results of six mine experiments where various types of roadway support were installed and then loaded dynamically by blasting within surrounding rocks are discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Hładysz, Z. (1979) Rheologic criterion of bursting propensity of coal based on laboratory studies (in Polish),Prace GIG, Komunikat 709.
Kidybiński, A. (1981) Bursting liability indices of coal,International Journal of Rock Mechanics and Mining Science 18, 295–304.
Kidybiński, A. (1982)Fundamentals of Strata Control Engineering (in Polish),Śląsk Publ. House, Katowice.
Snodgrass, J. J. and Siskind, D. E. (1974) Vibrations from underground blasting, Report of Investigation 7937, US Bureau of Mines.
Kidybiński, A. and Biliński, A. (1982) The assessment of mine rockburst hazard using activated seismicity method (in Polish),Bezpieczeństwo Pracy w Górnictwie 4, 57.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kidybiński, A. Design criteria for roadway supports to resist dynamic loads. International Journal of Mining and Geological Engineering 4, 91–109 (1986). https://doi.org/10.1007/BF01560669
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01560669