Development of recommendations for choosing excavation support types and junctions for uranium mines of state-owned enterprise SkhidHZK

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Authors:

N.I. Stupnik, Dr. Sci. (Tech.), Professor, Kryvyi Rih National University, Professor of the Department of Underground Mining, Kryvyi Rih, Ukraine

M.B. Fedko, Cand. Sci. (Tech.), Associate Professor, Kryvyi Rih National University, Senior Lecturer of the Department of Underground Mining Kryvyi Rih, Ukraine

S.V. Pismennyi, Cand. Sci. (Tech.), Associate Professor, Kryvyi Rih National University, Senior Lecturer of the Department of Underground Mining Kryvyi Rih, Ukraine

V.A. Kolosov, Dr. Sci. (Tech.), Ukrrudprom, Chairman of the Board, Kryvyi Rih, Ukraine

Abstract:

PurposeDevelopment of recommendations on the choice of rational type of excavation support and its junctions.

MethodologyTo develop the recommendations we used the following special and general scientific research methods: analysis of literature, method of critical analysis and synthesis of theoretical studies, system approach; method of economic and mathematical modeling.

Findings. We have developed the recommendationson the choice of rational type of excavation support and its junctions for uranium mines of State-Owned Enterprise SKhIDHZK. It takes into account,not only the stability class of rocks and their level of stress state, but also the width of excavation and its operating life. We gave recommendations for the characterization of the roof bolting, sprayed concrete lining and combined support, and presented the examples of calculations of the parameters for different kinds of support in given conditions.

Originality. We have determined the dependence of the stability of rocks on their stress statelevel corresponding to the stability class, affecting the size of mine tunnels and their operating life.

Practical valueWe have determined the values of the coefficient of structural weakening of the massif. We have suggested the methods for calculating the required length of the anchor;anchor depth of setting into the massif; length the anchor should stand proud fromthe tunnel wall. We have determined the optimal distance between anchors depending on the section of the anchor, tensile strength of the material of the anchor, and load factor. The method for determining the required thickness of the sprayed concrete lining depending on its tensile strength in uniaxial compression in the case the sprayed concrete lining is separate type of support. When using the combined support (anchor with sprayed concrete, anchor with additional tightening of the metal mesh and the subsequent application of sprayed concrete, anchor with additional welded lattice tightening or metal frame supports) the parameters of each of these types of lining are calculated by the improved method.

References:

1. Каспарьян Э.В. Устойчивость горных выработок в скальных породах / Каспарьян Э.В. – Л.: Наука, 1995. – 184 с.

Kasparyan, E.V. (1995), Ustoychivost gornykh vyrabotok v skalnykh porodakh [Stability of Excavations in Hard-Rock], Nauka, St. Petersburg, Russia.

2. Еременко А.А. Проведение и крепление горных выработок в удароопасных зонах железорудных месторождений / Еременко А.А., Федоренко А.И., Копытов А.И. – Новосибирск: Доктрина, 2008. – 190 с.

Yeremenko, A.A., Fedorenko, A.I. and Kopytov, A.I. (2008), Provedeniye i krepleniye gornykh vyrabotok v udaroopasnykh zonakh zhelezorudnykh mestorozhdeniy [Driving and Fastening of Excavations in Bump Hazardous Zones of Iron-Ore Deposits], Doktrina, Novosibirsk, Russia.

3. Проведение и крепление выработок на железорудных месторождениях, опасных по горным ударам: матер. IV науч.-практ. конф. ИГД СО РАН / А.А. Еременко, В.Н. Филиппов, В.В. Дорогунцов [и др.] // Наукоемкие технологии добычи и переработки полезных ископаемых – Новосибирск, 2005. – С. 77–81.

Yeremenko, A.A., Filippov, V.N. and Doroguntsov, V.V. (2005), “Driving and fastening of excavations in bump hazardous iron-ore deposits”, Proc. of the 4th Academic and Research Conf. “Naukoyemkiye tekhnologii dobychi i pererabotki poleznykh iskopayemykh”, Novosibirsk, pp. 77–81.

4. Калиниченко В.А. Исследование влияния параметров анкерной крепи на высоту выемочных штреков / В.А. Калиниченко, И.А. Горбатенко // Гірничий вісник: Науково-технічний збірник. – 2012. – Вип. 95 (1). – С. 183–186.

Kalinichenko, V.A. and Gorbatenko, I.A. (2012), “Study of influence of anchor bolting parameters on the height of extraction drifts”, Hirnyghii Visnyk, issue 95(1), pp. 183–186.

5. Районирование выработок по способам крепления в условиях Шерегешевского месторождения / А.А. Еременко, В.Н. Филиппов, Е.А. Белоусов [и др.] // Горный информационно-аналитический бюллетень –2005. – № 9. – С. 46–57. 

Yeremenko, A.A., Filippov, V.N. and Belousov, Ye.A. (2005), “Zoning of excavations by support types in Shegereyevskoye deposit”, Gornyi Informatsyonno-Analiticheskiy Byulleten, no.9, pp. 46–57.

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

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