FIELD: driving of workings by blasting in gas-hazardous mines. SUBSTANCE: to form an additional free surface, the bore-hole is inertized by a blast of inertizing substance with tamping of an inhibitor, after that the charges of cut, main and mapping holes are blasted. EFFECT: facilitated procedure. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF BLASTINGS BY BURN CUT | 1996 |
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| METHOD FOR DAMPING AIR SHOCK WAVES | 1992 |
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| METHOD OF DRILLING AND BLASTING OPERATIONS IN ROCK WORKINGS | 1997 |
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| METHOD OF BLASTING OPERATIONS IN GASSY MINES | 1996 |
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| BULKHEAD | 1999 |
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| CHARGE OF IMPACT INITIATION | 1992 |
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| METHOD OF SUPPRESSING AIR SHOCK WAVE | 1995 |
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| EXPLOSIVE CHARGE OF IMPACT INITIATION | 1992 |
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| METHOD OF DRIVING PREPARATORY WORKING IN BEDS PREZENTING COAL AND GAS OUTBURST HAZARD | 0 |
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SU791975A1 |
