FIELD: blasting.
SUBSTANCE: wells are drilled in the form of convex arch rotation surface in section along well length with radius (in m) 
and length of arch chord (in m) 
where d - well diametre; m; ls is stemming length, m; b is distance between wells, m; and number of shock waves impositions within well borders is identified from expression 
where 
EFFECT: invention makes it possible to provide for even breaking of rocks in blast unit and to improve efficiency of extraction-loading equipment and transport.
1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR BLAST BREAKING OF ROCKS | 1989 |
|
SU1840796A1 |
| METHOD FOR DIRECTED BREAKING OF ROCKS | 1988 |
|
SU1840795A1 |
| METHOD FOR CHARGE INITIATION | 1989 |
|
SU1840798A1 |
| CARTRIDGE FOR DIRECTED BREAKING OF ROCKS | 1988 |
|
SU1840799A1 |
| METHOD FOR EXPLOSIVE DESTRUCTION OF VARIOUS COHERENCE ROCK MASSIF WITH DISTRIBUTED AND SHORTENED BLASTHOLE CHARGES WITH CUMULATIVE EFFECT | 2015 |
|
RU2594236C1 |
| CHARGE ES | 1989 |
|
SU1840801A1 |
| OPEN DEVELOPMENT METHOD OF COAL BEDS GROUP WITH GROSS EXPLOSIVE LOOSENING OF OVERBURDEN ROCKS | 2015 |
|
RU2593285C1 |
| METHOD FOR ROCK-BLASTING AT OPEN-PIT MINING | 2003 |
|
RU2244252C1 |
| METHOD OF DETONATION IN OPEN-CAST MININGS OF ROCK MASSES WITH DIFFERENT STRENGTH VALUES | 2014 |
|
RU2563893C1 |
| METHOD FOR MULTIPOINT INITIATION OF EXPLOSIVE CHARGES | 1989 |
|
SU1840797A1 |
