DIAGNOSTICS OF THE GEOMECHANICAL CONDITION OF THE ROCK MASSIVES UNDER DEVELOPMENT SYSTEMS WITH MASS COLLAPSING OF ORE AND LAYING OF THE WORKED SPACE
V. A. Shtirts1, E. A. Khristolyubov2, A. A. Eremenko3
1Mine Tashtagol, JSC “Evraz ZSMK”, Tashtagol, Russia
2Mine Sheregesh, JSC “Evraz ZSMK”, Sheregesh, Russia
3Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Rock massif, laying, mined-out space, stresses, tremors, development system, ore
Abstract
The geological, mining and technical characteristics of Tashtagol deposit are given. The location of the pressure zone during the development of the Eastern section is determined. Cases of rockburst and disturbances in the workings are considered. The estimation of the stress state of the rock mass using different methods for predicting geodynamic phenomena was performed; shock hazard category defined. Anomalous sections were revealed within the mine field in the area of workings no. 03 - 10, no. 22 - 25, etc. It was established that the combined factors for the preparation and collapse of blocks are the main factors affecting the stress state of rocks.
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