FIELD: mining.
SUBSTANCE: method to increase stability of a ceiling in downward slicing development of a deposit with backfilling includes serial tunnelling and backfilling of parallel mines - stope entries, leaving ore pillars with width equal to one, two or three spans of mines, backfilling of mines with a concrete mix, and after backfilling hardens, ore pillars left between concrete strips are mined. At the same time the vault of stope entries is arranged as deep, besides, ore pillars are left in the roof between concrete backfilling of adjacent stope entries.
EFFECT: higher stability of a mine ceiling.
4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR STOWING CAVITIES IN ROOF OF MINING ENTRY WAYS AT DEVELOPMENT OF UPPER LAYER WITH LAYING | 2010 |
|
RU2435964C1 |
| COMPLETE STOWAGE OF BOTTOM LAYER BREAKAGE CUTS AT DECLINING EXCAVATION OF MINERALS | 2013 |
|
RU2522495C1 |
| METHOD OF MINING THICK STEEP DEPOSITS OF UNSTABLE ORES | 2009 |
|
RU2405108C1 |
| METHOD OF MINING OF JOINTLY OCCURRING STEEP THIN ORE BODIES IN STABLE AND MEDIUM-STABLE ROCKS | 2001 |
|
RU2209972C2 |
| LAYERED ROOM-AND-PILLAR SYSTEM WITH COMPLETE STOWING | 2011 |
|
RU2486340C2 |
| METHOD OF ROOF ADVANCED ATTACHMENT AT PILLAR EXTRACTION BETWEEN WORKINGS FILLED WITH CONCRETE | 2010 |
|
RU2451180C1 |
| METHOD OF DEVELOPING THICK STEEPLY DIPPING ORE BODIES | 2014 |
|
RU2558841C1 |
| METHOD TO MINE THICK STEEP DEPOSITS OF UNSTABLE ORES | 2010 |
|
RU2445461C1 |
| METHOD FOR EXTRACTION OF STEEP-FALLING DEPOSITS OF WEAK ORES | 2003 |
|
RU2248448C1 |
| METHOD TO MINE THICK STEEP DEPOSITS OF UNSTABLE ORE | 2016 |
|
RU2648371C1 |
