Determination of normative strength of embedment in diamond-shaped chambers
Abstract
The methodology of calculating the normative strength of backfill in the system of mining with sub-stage ore stripping in diamond-shaped chambers is considered. It is proposed to take as normative the largest design value of strength determined from the conditions of stability of the diamond-shaped chamber vault and stability of the complex in shape and structure inter-chamber pillar formed between the chambers.
Область исследования:
Mining
References
- A.s. 1640457 MKI E21F15/00. Method of formation of a laying massif / G.G. Milekhin, A.A. Ivanov, Y.S. Obruchev, S.N. Abashin (USSR), Published 07.04.91. Bulletin No.13.
- Temporary rules for the protection of structures to natural objects from the harmful effects of underground mining of non-ferrous metal ore deposits with unstudied process of rock shear / VNIMI. L., 1986.
- Methodical guidelines for the management of mining pressure in continuous mining systems with hardening backfill at the mines of Norilsk MMC / VNIMI. L., 1987.
- Milekhin G.G., Bodnya I.V., Obruchev Y.S. Development system with sub-stage ore stripping and incomplete backfilling of the excavated space// Mining Journal. 1990. № 7.
- Milekhin G.G., Grokholskiy A.A., Abashin S.P. Stability of pillars during the development of deposits by diamond-shaped chambers// Abstracts of reports of VIII Ural scientific-technical conference on systems of underground development of non-ferrous metal ores/Unipromed. Sverdlovsk, 1989.
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