METHOD FOR BUILDING INACTIVE SIDE OF A QUARREL UNDER PERMAFROST

摘要

FIELD: mining. SUBSTANCE: forming inactive side of a quarrel is carried out without preventive berms with high inclined suppression steps. Preventive trench is built on haulage berm. Protective bank is erected on the ledge of the haulage berm. Thermal insulating screen is erected on slopes of high steps. The screen consists of synthetic cloth with pulverized coating of frothed plastic. EFFECT: decreased labour consumption. 1 cl, 8 dwg