ROCKBURST HAZARD AT THE MOROSHKA DEPOSIT UNDER MINING WITH BACKFILL

The article presents the results of the additional analysis of experimental deformation curves (air-dry rock specimens), as well as rockburst hazard and structural damage of rock mass at the Moroshka deposit. The mathematical modeling of change in stress state of rocks mass subjected to horizontal slicing with backfill is carried out. Based on the modeling results, the maximum horizontal and vertical stresses in rock mass adjacent to an extraction block are plotted as function of mining depth. The analysis of geology, physical and mechanical properties and structural damage of rock mass, as well as the change in the stress state of rock mass under horizontal slicing with backfill at the Moroshka deposit shows the absence of rockburst hazard at the project mine depth (down to 310 m), and the dynamic rock pressure events are not expected under such conditions. The Moroshka deposit down to the depth of 310 m below ground surface, subject to adherence to the accepted technology of horizontal slicing with backfill can be placed in the category of rockburst-nonhazardous rock mass.

Keywords

Rock bursts, rockburst hazard, rock mass stress state, enclosing rock and ore tendency toward rock bursts, physical and mechanical properties of rocks, horizontal slicing with backfill.

Issue number: 8
Year: 2018
ISBN:
UDK: 622.272: 622.274
DOI: 10.25018/0236-1493-2018-8-0-5-15
Authors: Aynbinder I. I., Ovcharenko O. V., Patskevich P. G.

About authors: Aynbinder I.I., Doctor of Technical Sciences, Professor, Head of Department, e-mail: geoexpert@ yandex.ru, Ovcharenko O.V., Candidate of Technical Sciences, Senior Researcher, e-mail: geoexpert@ yandex.ru, Patskevich P.G., Candidate of Technical Sciences, Head of Laboratory, e-mail: ppg1975@ hotmail.ru, Institute of Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia.

REFERENCES:

1. Federal'nye normy i pravila v oblasti promyshlennoy bezopasnosti «Polozhenie po bezopasnomu vedeniyu gornykh rabot na mestorozhdeniyakh, sklonnykh i opasnykh po gornym udaram». Prikaz Rostekhnadzora ot 02.12.2013 № 576. Zaregistrirovano v Minyuste Rossii 04.04.2014 № 31822 [Federal Industry Safety Code: Regulations on safe mining at rockburst-hazardous mineral deposits. Rostekhnadzor Order No. 576 as of Dec 12, 2013. Registered in Ministry of Justice of Russia 04.04.2014 No. 31822].

2. Petukhov I. M. Teoreticheskie kontseptsii vozniknoveniya gornykh udarov [Theoretical conceptions on origination of rock bursts]. Simpozium po gornym udaram i vnezapnym vybrosam v podzemnykh shakhtakh: teoreticheskoe obosnovanie, prognozirovanie, preduprezhdenie i obespechenie zashchity shakhterov. Evropeyskaya ekonomicheskaya komissiya OON. Saint-Petersburg, 5—9 June 1994.

3. Petukhov I. M., Lin'kov A. M. Mekhanika gornykh udarov i vybrosov [Mechanics of rock bursts and outbursts], Moscow, Nedra, 1983.

4. Petukhov I. M. Klassifikatsiya dinamicheskikh yavleniy v shakhtakh [Classification of dynamic events in mines]. Sbornik nauchnykh trudov VNIMI, Leningrad, 1991, pp. 42—51. [In Russ].

5. Bronnikov D. M., Kuznetsov S. V. Osnovy prognoza napryazhennogo sostoyaniya i povedeniya massivov gornykh porod v svyazi s razrabotkoy mestorozhdeniy poleznykh iskopaemykh [Principle of prediction

of rock mass stress state and behavior under mining], Gornye nauki v SSSR, Moscow, Nedra, 1985. 6. Zamesov N. F., Aynbinder I. I. Gornye udary i strategiya razrabotki rudnykh mestorozhdeniy na bol'shikh glubinakh [Rock bursts and deep-level ore mining strategy], Moscow, IPKON AN SSSR, 1984.

7. Stavrogin A. N., Protosenya A. G. Prochnost' gornykh porod i ustoychivost' vyrabotok na bol'shikh glubinakh [Strength of rocks and stability of excavations at great depths], Moscow, Nedra, 1985.

8. Eremenko V. A., Ryl'nikova M. V., Esina E. N., Lushnikov V. N. Obosnovanie sposoba otsenki zon rasprostraneniya i velichiny kontsentratsii napryazheniy v usloviyakh podzemnoy razrabotki rudnykh mestorozhdeniy [Substantiation of estimation method for propagation zones and concentration of stresses during underground ore mining]. Gornyy informatsionno-analiticheskiy byulleten’. 2014, no 5, pp. 5—12. [In Russ].

9. Kuz'min E. V., Uzbekova A. R. Reytingovye klassifikatsii massivov gornykh porod: predposylki sozdaniya, razvitie i oblast' primeneniya [Rock mass quality ratings: Background, development and application field]. Gornyy informatsionno-analiticheskiy byulleten’. 2004, no 4, pp. 201—203. [In Russ].

10. Kuz'min E. V., Uzbekova A. R. Reytingovye klassifikatsii massivov gornykh porod i ikh prakticheskoe primenenie [Rock mass quality ratings and applications].Gornyy informatsionno-analiticheskiy byulleten’. 2005, no 5, pp. 181—185. [In Russ].

11. Bronnikov D. M., Zamesov N. F., Bogdanov G. I. Razrabotka rud na bol'shikh glubinakh [Deep-level ore mining], Moscow, Nedra, 1982.

12. Zamesov N. F., Aynbinder I. I., Burtsev L. I., Rodionov YU. I., Ovcharenko O. V., Arshavskiy V. V. Razvitie intensivnykh metodov dobychi rud na bol'shikh glubinakh [Intensive methods for deep-level ore mining], Moscow, IPKON AN SSSR, 1990.

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