FIELD: mining.
SUBSTANCE: invention is referred to mining in particular, to underground mining of steep mineral deposits. The method includes penetrating of development workings and temporary workings, working off in limits of mine section of a mineral stocks from primordial chambers and chamberlets using drilling-and-blasting technique, infilling of the fulfilled room of primordial chambers and chamberlets with lagging. Breakage of stocks of 4 primordial and 3 secondary chambers is performed using general series of hole fans. Breakage of stocks of 4 primordial chambers is performed using a method of holes undercharge with water soluble gel tamping. Then partial discharge of ore from 4 primordial chambers in the conduit is performed followed by lagging of 4 primordial chambers with a hardening mixture. After reaching standard hardness by lagging, washover of the remained holes and/or their parts with water is performed followed by discharge of the remained ore from the conduit of discharge 5, and chambers 3 of the second sequential queue are worked off. Width b of primary 4 chambers is defined from the formula: b = hva 2×ρd ×sinα/1800×σt, where hbl - vertical altitude of the block, m; ρd - density of the filling material of primordial chamber, kg/m3; σt - tension strength of the filling material of the primordial chamber, MPa; a - degree of dip of an ore body, grades.
EFFECT: increased range of application on steep and high-dipping fields, in ores of mean and small stability, higher performance of working off of the operational block during clearing excavation of chambers of the second sequential queue.
6 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD OF UNDERGROUND MINING OF MASSIVE STEEP ORE DEPOSITS | 2009 |
|
RU2411360C1 |
DEVELOPMENT METHOD OF ORE DEPOSITS WITH BLOCK CAVING SYSTEM WITH ACTIVE FLEXIBLE SEPARATING COVERING | 2009 |
|
RU2426881C1 |
MINING METHOD FOR STEEP ORE BODIES | 2007 |
|
RU2325529C1 |
UNDERGROUND DEVELOPMENT METHOD OF SERIES OF THIN STEEP DEPOSITS | 2009 |
|
RU2425218C1 |
METHOD FOR UNDERGROUND DEVELOPMENT OF STEEPING ORE BODIES IN DESCENTING ORDER WITH CHAMBER SYSTEM | 2022 |
|
RU2790648C1 |
METHOD FOR ORE BODY CONTINUOUS WORKING | 0 |
|
SU1739032A1 |
METHOD FOR ORE BODY CONTINUOUS WORKING | 0 |
|
SU1739033A1 |
METHOD FOR WORKING STEEP ORE BODIES | 0 |
|
SU1739031A1 |
METHOD OF UNDERGROUND SOLID MINERAL DEPOSIT MINING | 2004 |
|
RU2277171C1 |
METHOD OF DEVELOPING THICK ORE DEPOSITS BY UNDERGROUND MINING WITH INTERCHAMBER PILLARS SUPPORT | 2009 |
|
RU2405109C1 |
Authors
Dates
2008-09-27—Published
2007-03-21—Filed