SU1162978A1 - Method of subterranean mining of minerals - Google Patents

Abstract

A METHOD FOR UNDERGROUND EXTRACTION OF MINERAL RESOURCES, including the excavation of preparatory and rifled workings, the extraction of ore reserves with layers from top to bottom, mining of layers by stopping, conducting drifts in adjacent layers with offset one relative to another and laying the hardening mixtures, different from that with reducing the cost of production by reducing the consumption of the hardening mixture, first of all carry out the breaking down and shipment of the stocks of the lower part of the inlet, then beat off and ship the reserves of the upper part of the inlet, and the upper part of the entry is worked out with a width of less than the width of the lower part, then the tab of the lower part of the entry is formed and the backing rising is formed in it, and in the upper part of the entry the technological space is formed, through which the filling mixture is fed to Q backfill, and the lower parts of the entry are processed for (The value of standing one from the other, equal to the width of the upper part of the approaches.

Description

ABOUT)

1s

with

00

The invention relates to the mining industry and can be used in the underground mining of mineral deposits.

There is a known method of developing ores by a chamber-like system with an incomplete filling with hardening mixtures of the open space 1.

The disadvantages of this method are the relatively high consumption of the hardening mixture, since only cavities after excavation of columnar pillars remain unencumbered, and the increased danger of work when they are excavated as a result of exposing a significant passage of the backfill array.

The closest to the proposed method is the underground mining of minerals, which includes excavation of preparatory and rifled workings, excavation of ore reserves with layers from top to bottom, mining of layers by stopping, carrying out stoppages in adjacent layers with displacement of one relative to the other, and bookmarking visits with hardening mixtures 2.

The disadvantages of this method are the high consumption of the filling mixture, the high consumption of explosives and the increased risk of work in connection with the possibility of dumping of the bookmark from the contact zone of the in-arcs of the overlying layer.

The purpose of the invention is to reduce production costs by reducing the consumption of the hardening mixture.

This goal is achieved by the fact that according to the method of underground mining of minerals, including sinking of preparatory and rifled workings, excavation of ore reserves with layers from top to bottom, mining of layers by penetrations, carrying out of visits in adjacent layers with offset one relative to another and laying tabs with hardening mixtures, first of all carry out the breaking down and shipment of the stocks of the lower part of the inlet, then beat off and dispatch the reserves of the upper part of the inlet, and the upper part of the inlet is worked with a width less than In the lower part, then the lower part of the entry is laid out and the backfill riser is formed in it, and in the upper part of the entry the technological space is formed, through which the filling mixture is fed to the uppering rising, and the lower part of the entry is worked at a distance of one from the other equal to the width top of the stopover.

FIG. 1 shows the scheme of the working area along the strike, section A-A

and section BB; in fig. 2 shows a section B-B in FIG. one.

The method is carried out as follows.

To ensure the transportation of mineral resources, haul-off pin 1 is passed, and to ensure ventilation, a ventilation drift 2 can be used. A haul-off arrow can be used as a ventilation shchetr of the overlying horizon. Transport and ventilation shchreki are interconnected by transport slope 3 and the ore lag 4. From the transport slope passes the connections 5, from which cut off drifts 6 pass. After

penetrations of cutting drifts begin cleaning works by penetrating horizontal clearing workings (stopping) 7.. The cutting of ore in mines 9 is carried out as follows.

First, fill the lower part of the development of horizontal holes. Blow up and clean the broken ore. After that, the vertical bore holes drill out the upper part. The vertical holes are positioned in such a way that, after the breaking, the upper part of the cross section of the excavation 7 is less than the lower one by a predetermined value. The step of breaking the top of the excavation is equal to the step of breaking the bottom. After the excavation of production 7 begin her bookmark. As far as filling the bottom of production

0 hardening mixture form a ventilating wedge of the rising 8 by installing a formwork that grows as the filling mixture fills the lower part of the excavation 9. To save cut off drift 6, it is isolated from the laid space by jumpers 10. Only the lower part of the clearing excavation is laid, and their upper non-embedded technological part 11 is used to deliver the bookmarks to the downstream treatment pits and to air them. The cleaning outlets, located in one layer, pass one from another at a distance equal to the width of their upper part. This achieves the displacement of the underlying workings with respect to overlying them by half.

The use of the invention will reduce the consumption of the filling mixture, reduce the consumption of explosives as a result of breaking the upper half of the bores into two exposed surfaces and increase the safety of work due to the higher stability of the laying in the monolithic ceiling of the bores. /// /// /// /// /// /// ///

  W

  t-a-. «j-f., f -.vfi r Q U 1.ShSh. ffl: l; (. | W

 l: ofgj y (r

: V o.:l b -.- with

--o., 1 I, o, -, II; - o.:l l4i-V -TirTiKS ;; :

..l r .. IГ .; ° xV П .о.ai. PI l igljft- aF °; - li-.

/. /../

..o.;.: o.

 Jf oV-;

S: te

v- “o

Vvb-v ;;.:. v; r.o: ;;

Yu; xv

Shu,

.. b:

.: 4V °;

... L

M

P

.h /

6-5

XX / / X / X / X XXX UHH About XY / p /: p.:. . : .- ..: -.- УfPuz .Z

Claims (1)

METHOD FOR UNDERGROUND MINING OF MINERAL MINING, including sinking of preparatory and rifling workings, mining of ore reserves in layers from top to bottom, mining of layers with fillings, making openings in adjacent layers with displacement from one relative to the other and laying openings with hardening mixtures, characterized in that, in order to reduce costs production by reducing the flow rate of the hardening mixture, first of all, they carry out the breakdown and Shipment of the reserves of the lower part of the entry, then the reserves of the upper part of the input are beaten and loaded second part stope fulfill width less than the width of the lower part, and then produce a bookmark bottom of the stope and forming therein stowing revolted while the upper part stope formed technological space through which serves stowing the mixture to _s stowing reconstitution, wherein ® lower parts zahodok fulfill distance one from the other, equal to the width of the upper part of the tabs.