| 摘要 |
FIELD: mining industry, applicable at blasting of rocks on the ground surface, at blasting of ores in the underground conditions and driving of underground open pit minings. ^ SUBSTANCE: the method for drilling blasting of rocks includes drilling of boreholes with subsequent their loading with explosive charges, short-delay blasting and registration of seismic oscillations on one block. Then, the zone with the maximum quantity of simultaneously blasted deep-hole charges on this block is determined according to the amplitude of speed exceeding the preset level on the seismograph. After that the intervals of operation between the adjacent charges on the next block are increased with due account made for the obtained results of measurements on the previous block. ^ EFFECT: provided the necessary degree of rock crushing at an allowable level of seismic action on the environment. ^ 4 dwg, 1 ex |
