FIELD: methods for charging of flooded holes with explosive at opencast mining. SUBSTANCE: after dewatering the hole surface is damp-proofed by a shell obtained from a tape of waterproof paper simultaneously unreeled from two spools installed on both sides of the hole, passing the tape through a funnel. The end of the charging hose is placed on the tape sagging, and the tape is lowered under pressure to the hose face. The tape is placed on the two sides of the hole in the form of semi-cylinders overlapping its surface with superposition of the tape edges due to the fact that the tape width exceeds half the circle length of the hole being charged. After formation of the waterproof shell the hole is charged with explosive. EFFECT: enhanced reliability and safety of hole charging. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CHARGING OF FLOODED VERTICAL AND INCLINED HOLES (MODIFICATIONS) | 2001 |
|
RU2184344C1 |
| PROCESS OF CHARGING OF BOREHOLES | 1998 |
|
RU2130583C1 |
| PROCESS OF DRYING-UP AND LOADING OF BOREHOLES | 1998 |
|
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| METHOD OF CHARGING OF FLOODED WELLS | 1997 |
|
RU2126132C1 |
| METHOD FOR LOADING OF FLOODED HOLES | 1998 |
|
RU2148246C1 |
| METHOD OF CHARGING INCLINED AND HORIZONTAL WELLS (VERSIONS) | 1999 |
|
RU2162201C1 |
| METHOD FOR CHARGING OF BOREHOLES WITH RUNNING WATER (MODIFICATIONS) | 2000 |
|
RU2163343C1 |
| PROCESS OF DOING BLAST OPERATIONS BY POWDER CHARGES | 1997 |
|
RU2131108C1 |
| EXPLOSIVE CHARGE AND METHOD OF UTILIZATION THEREOF (VERSIONS) | 1998 |
|
RU2135439C1 |
| PROCESS OF LOADING OF HOLES WITH AMMUNITION | 1998 |
|
RU2141101C1 |
