METHOD FOR DETERMINING THE LIMIT OF LONG-TERM STRENGTH OF ROCKS

摘要

method u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 limit long-term strength of rocks with increasing u043du0430u0433u0440u0443u0436u0435u043du0438u0435 model of rock with the registration of u0443u0440u043eu0432u043du00a0 u0440u0430u0437u0432u0438u0442u0438u00a0 tre u0449u0438u043d and definition on the long-term strength of rock u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 limit, so that the sample of rock are exposed to ultrasound.u0437u0430u043cu0435u0440u00a0u044eu0442 at each stage for each cluster u043du0430u0433u0440u0443u0436u0435u043du0438u00a0 and duration of ultrasonic pulse u043au043eu0442u043eu0440u0430u00a0 corresponds to a u0440u0430u0437u0432u0438u0442u0438u00a0 cracks, u0441u0442u0440u043eu00a0u0442 graphics u043fu0440u043eu0437u0432u0443u0447u0438u0432u0430u043du0438u00a0 and at the point of u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 curves u043fu0440u043eu0437u0432u0443u0447u0438u0432u0430u043du0438u00a0 with the axis of u043du0430u0433u0440u0443u0436u0435u043du0438u00a0 u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 limit long-term strength of rock, the first u0440u0430u0437u0440u0443u0448u0435u043du0438u00a0 model and u0443u0432u0435u043bu0438u0447u0435u043du0438u00a0 volume.