| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to mining and can be used in coal and ore pits in excavation at drilling-and-blasting. Proposed method comprises drilling wells, close in pairs, in spacings between three larger-diameter compensation wells. Note here that triangular lengthwise compensation cut-outs - strain compensators are made in said wells, close in pairs directed towards compensation wells.EFFECT: higher efficiency of blasting jobs and making of relief openings.4 dwg |
