METHOD OF DETERMINING THE LIMIT OF LONG-TIME STRENGTH OF ROCKS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to test technology, to u0438u0441u043fu044bu0442u0430u043du0438u00a0u043c endurance. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - improve productivity by u0443u043cu0435u043du044cu0448u0435u043du0438u00a0 total time tests and simultaneous u0438u0441u043fu044bu0442u0430u043du0438u00a0 several samples. samples of rock placed consistently in a cold cell, u0434u043eu0432u043eu0434u00a0 to u0437u0430u043cu0435u0440u0437u0430u043du0438u00a0 water temperature, the thermostat to the temperature 15 - 20u0441.it is proved that after 20 cycles u0437u0430u043cu043eu0440u0430u0436u0438u0432u0430u043du0438u00a0 - u043eu0442u0442u0430u0438u0432u0430u043du0438u00a0 samples reached the limit of long-term strength. then the models respond corroding both short-term load, which was judged on the amount of time a long durability.