| 摘要 |
A method for destruction of rocks includes well drilling, placement of explosive substance there, with means for initiation of explosion, stemming and initiation. Besides that stemming is performed by means of retarded explosive substance with low sensitivity, and stem length is taken as such that it increases limiting length of suppression of explosion, with calculation by formula:, whereL – stem length, m;l– length of charge of explosive substance in well between primers, m;D– rate of detonation of charge of explosive substance in well, m/s;D– average rate of detonation of stem that is equal to 1100 m/s. |
