SUBSTANTIATION OF PROCESS SOLUTIONS ON MODERNIZATION OF MINING WITH AND WITHOUT BACKFILLING AT TASHTAGOL DEPOSIT

The geomechanical situation of mining in Vostochny and Severo-Zapadny ore bodies at Tashtagol deposit is analyzed. It is found that local seismic activity has increased as a consequence of the block structure of rock mass, faulting and nonuniform stress field. The stress–strain state of rock mass is assessed based on the data of mathematical modeling using the method of boundary singular integral equations.

The process solutions on mining modernization in the ore bodies are selected and substantiated. Scenarios of mining with backfilling at levels (-280; -210 m) are discussed. Towards the enhanced efficiency of Severo-Zapadny ore body mining, it is suggested to continue extraction under backfilled level -280 m by room-and-pillar method with the skewed rooms and pillars (without backfill) followed by transition to sublevel caving at deeper level -311÷-350 m. In Vostochny site, in crown pillar under the Kondoma River, extraction of the reserves should use mining system with backfill.

Keywords

Block structure, seismic activity, modeling, modernization, backfill, pillar.

Issue number: 2
Year: 2018
ISBN:
UDK: 622.2
DOI: 10.25018/0236-1493-2018-2-0-57-65
Authors: Filimonov V. V., Khristolyubov E. A., Eremenko A. A., etc.

About authors: Filimonov V.V., Head of Tashtagolsky mine, JSC «Evrazruda», 652970, Kemerovo region, Tashtagol, Russia, e-mail: Vladimir Filimonov2@evraz.com, Khristolyubov E.A., Deputy Head of Technical Department, Gornaya Shoria Division, JSC «Evrazruda», 652971, Kemerovo Region, Sheregesh, Russia, e-mail: Evgeny.Khristolyubov@evraz.com, Eremenko A.A. (1), Doctor of Technical Sciences, Professor, Deputy Director on Scientific Work, e-mail: yeryom@misd.nsc.ru, Gakhova L.N. (1), Senior Researcher, e-mail: gahoval@mail.ru, Koltyshev V.N.(1), Researcher, e-mail: Witalq@mail.ru, 1) Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences, 630091, Novosibirsk, Russia.

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