Rock Bolting Improvement for Coal Mines in Permafrost Regions
E. A. RAZUMOV1, V. I. KLISHIN2, G. YU. OPRUK2, P. V. GRECHISHKIN2
1RANK 2, Sovetskii pr. 7, Kemerovo, 650000 Russia
2Institute of Coal, Siberian Branch, Russian Academy of Sciences, Leningradskii pr. 10, Kemerovo, 650065 Russia
Keywords: анкерная крепь, горная выработка, зона многолетней мерзлоты, ореол оттаивания, теплопроводность массива, теплоизоляционный материал, rock bolt support, underground excavation, permafrost region, thawing envelope, rock mass heat consuctivity, thermal insulator
Abstract
The authors give basic design procedures for two-level rock bolt support in underground mining in permafrost regions. The use of rock bolting in combination with heat insulation on a test site in Dzhebariki-Khaya Coal Mine is studied.
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