SU1010273A1 - Method of underground working of thin gently-sloping bed deposits of minerals by the chamber method - Google Patents

Abstract

METHOD. UNDERGROUND DEVELOPMENT OF THIN EXTREME PLASTIC DEPOSITS OF THE USEFUL DEPOSITABLE CAMERAS, including penetration of split workings in lateral rocks, inlet to the reservoir, excavation of the reservoir and control of the roof, leaving the surface, I’m working and I’m working at the same level; labor, reducing loss and dilution of the mineral, the split production is carried out on the width of the chamber, after which the chamber is dredged and partially laid, while For the spent chamber, waste material from waste making the subsequent developed chamber is used for the waste chamber, the width of the chamber and the chamber cavity pillars are the same (Lead and equal to half of the maximum stable span of the roof rocks, and the spent chambers are laid out in staggered order .

Description

yo

sc

The invention relates to the mining industry and can be used in the underground mining of thin flat seam mineral deposits, such as placer deposits, or coal.

There is a method of underground mining of thin gentle reservoir deposits of useful mineral chambers with partial laying of the worked-out space by erecting ice or ice-bearing pillars by layer-by-layer freezing tl

The disadvantage of this method is the high laboriousness and length of the laying process and the dilution of the mineral during the excavation of thin layers.

In addition, the method has insufficient efficiency.

There is also known a method of underground mining of thin flat layers of mineral deposits by chambers, including the excavation of split workings in lateral rocks to the reservoir, excavation of the reservoir and roof management with the base of chamber sections t2.

However, the known method is also characterized by a lack of mining efficiency.

The aim of the invention is to increase the efficiency of mining operations by reducing their labor intensity and reducing the loss and dilution of the mineral.

The goal is achieved by the fact that, according to the method of underground mining of thin flat reservoir mineral deposits, including the excavation of split openings in lateral rocks, the inflow to the reservoir, excavation of the stratum and roof management, leaving interdigit chamber pillars, split cutting develops on the width of the chamber, then production t the chamber notch and its partial bookmark, while using waste rock as a filling material for waste The chambered chamber, the width of the chamber and the inter-chamber pillar are equal and equal to half of the extremely stable roof overburden, and the cells to be worked out are staggered in staggered order.

The method is carried out as follows.

After revealing the seam of useful

a fossil, for example, a permafrost placer deposit, from the preparatory excavation above the mineral reservoir into the incisal mine there is a split excavation, and the width of the excavated excavation is set equal to the estimated chamber. Waste rock from this production is transported to the pre-spent waste chamber for use in

. quality bookmarks. After the production of the split in the usual ways, the mineral in the volume adjacent to the lower

Q the border of the split production, forming a chamber that coincides in plan with the split production. The cutting openings are made with the pillars left between them, the excavation of which is carried out from the mine floor boundaries in the same way as the excavation of the chambers with an empty rock bedding.

In order to increase the efficiency of maintaining the roof, the width of CC1 and the inner pillars are equal and equal to half of the maximum stable span of the roofs of this resistance class, and laying out the spent chambers, taking into account the insufficient amount of waste rock from the split openings, is carried out in sections. In the development of between the pillar pillars, the placement areas of the bookmark shift

in relation to previously laid plots of the chambers so that they are arranged in a checkerboard pattern to ensure uniform maintenance of the roof. In this case, the length of the plots laid by the rock and the intervals between them are assumed to be the same and equal to the width of the chamber.

The proposed method of excavation allows the use of high-performance self-propelled drilling and loading-transport equipment for mining thin flat seams, which, in terms of dimensions, exceeds the height of the mineral reservoir, which will ensure in these conditions

high technical and economic indicators and high mining efficiency.

Claims (1)

METHOD FOR UNDERGROUND DEVELOPMENT OF THIN SLIDING FLATED DEPOSITS OF USEFUL FOSSILES WITH CAMERAS, including sinking of openings in lateral rocks in cross-section to the formation, excavation of the formation and management of the roof with leaving inter-chamber pillars, which differs by the fact that it is difficult to reduce the amount of work by losses and dilution of the mineral, the cut-through development extend to the width of the chamber, · after which the chamber is cut out and its partial laying, while adochnogo waste material for camera use gangue from subsequent generation of split fulfills chamber shir'inu interchamber pillar camera and take the same and equal to one half of the limit sustainable flight roof rock and waste chambers carried tab portions that are disposed in a staggered manner. > 1