Accession Number : AD0715042

Title :   Study of the Physico-Mechanical Properties of Frozen Bedrock,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Burshtein,L. S. ; Kurochkin,A. N.

Report Date : 1970

Pagination or Media Count : 12

Abstract : In the overall complex of problems connected with the extraction of useful minerals in regions where semi-permanently frozen rocks are located the investigation of the physical and mechanical properties of stone has great significance. Negative temperature in rock gives it increased strength due to which safety is improved and sometimes it becomes possible to manage without reinforcement of subterranean diggings. The intensity and character of manifestations of rock pressure in semi-permanently frozen rocks depend on the temperature conditions of the diggings. Temperature fluctuations lead to changes in the physical and mechanical properties of rocks, and consequently also the conditions for maintaining the diggings, the carrying capacity of pillars and the strength of the exposed overhead. Depending on the actual conditions, problems of rock technology may be solved by methods of mechanically solid media or structural mechanics, for which the knowledge of physical and mechanical properties of rocks is a necessary condition. (Author)

Descriptors :   (*ROCK, MECHANICAL PROPERTIES), (*MINING ENGINEERING, MINERALS), TEMPERATURE, TEST METHODS, TEST EQUIPMENT, LOADS(FORCES), TENSILE PROPERTIES, USSR

Subject Categories : Geology, Geochemistry and Mineralogy
      Mining Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE