Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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SYSTEMATIC APPROACH TO THE STUDY OF STRENGTH OF FROZEN OVERBURDEN ROCKS ON SHIFT

Alcova E.L. 1 Panishev S.V. 1
1 Mining Institute of the North
The article describes the methodological approach to laboratory tests of strength of frozen overburden rock wherein the rock shear tests carried out on artificial samples are structurally comparable with exploded in their array of different humidity, temperature, density, packing, freezing time and particle size distribution. To test these samples, a sufficiently large size, the Institute of Mining of the North SB RAS designed stand. The design of the shear device provides horizontal shear force on the sample up to 56 ton. The developed method for testing the shear strength allows us to estimate of frozen overburden, various grain sizes, from the humidity, temperature and time of freezing and packing density that can be used for estimating the difficulty of excavation in a secondary freezing. This approach represents a contribution to the development of the theory of studying the physical and mechanical properties of rocks.