EA014034B1 - Excavation method of minerals seam - Google Patents

Abstract

The invention relates to the mining industry and can be used in development of minerals seams using chamber mining, for example, at Starobinsky and Gremyachinsky potash salt deposits. The object of this invention is to reduce expenditures connected with panel preparation and to increase mining complex productivity. Mineral seam excavation method includes panel preparation by development workings, minerals excavation by shrink stopings that leaves interchamber pillars using mining-and-roadheading machine, reloader hopper and self propelled vehicles. Moreover in one direction from the extraction drift two chambers with the length sufficient for reloader hopper placement are driven. The reloader hopper is placed in the first chamber after that in the opposite direction the chamber with the length sufficient for placement of mining-and-roadheading machine and reloader hopper in it is driven. The reloader hopper is taken out from the first chamber using the mining-and-roadheading machine and the chamber is driven till the specified length. Then the stoping equipment is taken out from the chamber. The reloader hopper is placed in the second chamber, after which this cycle is repeated. When driving the chambers till the specified length in the opposite part of the panel the reloader hopper after termination of excavation cycle is placed at the beginning of the previously driven chamber of worked-out part of the panel. Ventilator with air channel, disposed along the length of the frame is fixed on the reloader hoper.

Description

The invention relates to the mining industry and can be used in the development of a chamber system of mineral strata, for example, at the Starobinsky and Gremyachinsky deposits of potassium salts.

Chamber systems for the development of minerals (potassium salts, coal, etc.) are widely used in mining enterprises in the USA, Canada, Russia and other countries.

In many cases, in order to reduce overhead, the roadheader works in conjunction with a hopper-reloader. However, to perform maneuvers with a loading hopper when loading it into the chamber or removing it, one has to go through an additional launch drift [1] or expand one of the drifts to perform the necessary maneuvers with a loading hopper.

Closest to the technical nature of the claimed invention is selected as a prototype method of chamber development of salt formations [2].

The disadvantage of the analogue and prototype is an increase in the volume of mining and preparatory work and a decrease in productivity due to the complex maneuvers of the hopper-reloader when loading it into the chamber and subsequent extraction.

The objective of the invention is to reduce the cost of preparing the panel and increase the productivity of the mining complex.

To solve the problem in the claimed method of excavating a mineral layer, including preparing the panel with preparatory workings, extracting the mineral with treatment chambers with the inter-chamber pillars left, they are carried out using a tunneling combine, a hopper-loader and self-propelled vehicles, one way from the excavating drift pass two chambers with a length sufficient to be placed in the chamber of the hopper, in the first chamber the hopper is reloaded, after which in the opposite direction, a chamber with a length sufficient to accommodate a tunneling and mining combine with a hopper reloader is removed from the first chamber with a tunneling and mining combine and the hopper is passed through the chamber to a predetermined length, then the cleaning equipment is removed from the chamber, while the hopper is placed in the second chamber, after which the cycle repeats; when driving the cameras to a predetermined length in the opposite part of the panel, the hopper-loader after the end of the extraction cycle is located at the beginning of the previously passed chamber of the worked out part of the panel; a fan with an air duct located along the length of the casing is installed on the hopper-reloader.

In FIG. 1 schematically shows a chamber development system.

In FIG. 2-9 show the sequence of technological operations, including in FIG. 2 - the first prepared short well;

in FIG. 3 - placement in the first well of the hopper-loader and preparation of the second short well;

in FIG. 4 - camera penetration to a length sufficient for the location of a tunneling harvester with a hopper-reloader in it;

in FIG. 5 - tunneling a tunneling-mining combine with a hopper-loader for a given length;

in FIG. 6 - camera walked to a given length and the location of the hopper-loader in a short chamber and preparation of the next short chamber;

in FIG. 7 - sinking of the second chamber to a length sufficient for the location of a tunneling combine with a hopper-reloader in it;

in FIG. 8 - the location of the hopper-reloader in the next short chamber and the penetration of the chamber to a length sufficient to accommodate a tunneling and production combine with a hopper-reloader in it, FIG. 9 - sinking of the second chamber by a tunneling-mining combine and a hopper-loader for a given length.

The preparation of the panel (Fig. 1) is carried out by panel drifts: ventilation 1, excavation 2 and transport 3. The panels are worked off by treatment chambers 4 with the inter-chamber pillars 5. The panel can be worked out according to a one-sided scheme (Fig. 1) or two-sided, in which panel drifts pass in the middle part of the panel (not shown in the figures).

The excavation is carried out by a tunneling-mining combine 6 with a hopper-loader 7 and a vehicle 8, for example, self-propelled wagons. The hopper-reloader is used to accumulate ore in it, followed by reloading into a self-propelled wagon. Thus, it is possible productive work of the tunneling and mining machine 6 during the delivery of minerals to the telescopic conveyor 9. A fan with an air duct 10 is installed on the body of the hopper-reloader 7. The mining and harvesting machine 6 is equipped with a fan with an air duct 11, which is part of the dust extraction installation. When the camera is driven to a predetermined length, a ventilation system 12 of the camera is installed, the air duct of which is periodically extended when the camera is drilled, and is dismantled after the end of the tunnel.

- 1 014034

The extraction of minerals is carried out by sequentially performed technological operations, schematically depicted in FIG. 2-9.

At the beginning of the panel mining, the tunneling and mining machine 6 passes the first (starting) short chamber 13a long enough to accommodate the loading hopper 7. The cleaning chambers 4 and short chambers 13 are additionally indicated by the letters a, b, c, d, d the extent of their penetration. Then pass the adjacent short chamber 13 b, leaving between them an interchamber pillar 5.

In the first short chamber 13a (start), a hopper-loader 7 is placed. When planted in the chamber of the hopper-loader, a fan with an air duct 10 is turned on to ventilate the chamber. Then, a tunneling and mining combine 6 passes in the opposite part of the panel a chamber 4c to a length sufficient to accommodate a tunneling and mining combine with a loading hopper. The tunneling mining machine 6 removes the hopper-loader from the first 13a (starting) chamber and continues driving the chamber 4c to the specified (design) length by the tunneling mining combine 6 together with the hopper-loader 7. At the same time, a stackable ventilation system 12 is mounted in the chamber 4v. Transport means 8 deliver the destructible mineral to the receiving device of the telescopic conveyor 9. After driving the chamber 4c to a predetermined length, the equipment in the chamber is dismantled. In this case, the hopper-loader is placed in the adjacent short chamber 13 b, and the tunneling and mining combine pass a short well 13 g. After that, the technological cycle is repeated.

The set of essential features characterizing the essence of the proposed invention can be repeatedly used in the development, for example, of the Starobinsky and Gremyachinsky potash deposits to obtain a technical result consisting in reducing the cost of preparing the panel by reducing the amount of tunneling work on preparing the panel and increasing the productivity of mining mining complex due to the reduction of time for shunting operations when loading into the treatment chambers of the bunker-reloader I and its subsequent extraction. Information sources

1. Smychnik A.D., Morev A.B. Technology and mechanization of mining in potash mines of Belarus. Minsk, UE Technoprint, 2002, p. 11-13.

2. Permyakov R.S. and other technology of salt production. - M .: Nedra, 1981, p. 121, 125, prototype.

Claims (3)

CLAIM 1. A method of excavating a mineral layer, including preparing the panel with preparatory workings, extracting the mineral with treatment chambers with the inter-chamber pillars left using a tunneling-mining combine, a hopper-reloader and a self-propelled vehicle, characterized in that two pass in one direction from the excavating drift the chamber is long enough for the hopper-loader placed in the chamber, the hopper-loader is placed in the first chamber, after which it passes in the opposite direction t the chamber is long enough to accommodate a tunneling-mining combine with a hopper-loader in it, the hopper-loading crane is removed from the first chamber by a tunneling-mining combine and pass the chamber to a predetermined length, then the cleaning equipment is removed from the chamber, while the hopper-loader is placed in the second chamber, after which the cycle repeats. 2. The method of extraction of mineral according to claim 1, characterized in that when driving the cameras to a predetermined length in the opposite part of the panel, the hopper-loader after the end of the extraction cycle is located at the beginning of the chamber of the spent part of the panel that was previously passed. 3. The method of excavating the mineral layer according to claim 1, characterized in that a fan with an air duct located along the length of the casing is installed on the hopper.