CS201585B1 - Method of extracting the overfloor part of the utility mineral deposit by the surface drilling from the stope - Google Patents

Description

The invention solves the process of mining a very powerful coal or other mineral deposit by means of a long boring of the ceiling pillar from the working space of the face by a set of overhead boreholes.

Complex meohanization of deep mining, in particular of very strong coal seams, has been a difficult and unresolved problem on the global scale. Previously known overhead ceiling wall mining systems and overhead ceiling wall mining systems have been used to apply the pillar opening mechanism to the height of the mechanized reinforcement, but the seam above the reinforcement has so far been opened by a tear bar. The methods used make it impossible to achieve sufficient excavation, making mining dangerous due to the fall of rocks at blasting and loaders in the open area of the overhead beam. Blasting creates unfavorable microclimatic conditions for the prairies and the whole mining system does not allow to increase the labor productivity of the mostly manual and laborious operations of the technological process of mining. Another method of extracting a mighty deposit, as it is currently being extracted, is by shading by means of lavage in a single or associated lavage on a controlled cave, or with a foundation with the laying of artificial ceilings, or leaving the protective angles of the interlayers.

However, the above-mentioned lavioovanla powerful seam systems require multiple preparation of the block according to the seam power and the extraction of the heights of the individual benches and with a repeated turn

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201 of the S8S mining block, in addition to the high punching rate per mine unit, the cost of a fire-fighting conversion, in particular on deposits of coal susceptible to auto-ignition, increases. Other disadvantages associated with lavioovanla theoheology include the high cost of laying artificial ceilings, low bearing capacity, especially when leaving the coal protective layers between the lavios, the non-utilization of the moonstone quenching capacity, the multiple cost of dismantling and assembly work Mineral water, constant danger of formation of mists and bends. Despite the use of a complex meohanization, there is also the disadvantage of high pronoid, cost, and unfavorable productive to labor ratio.

Another method used so far to extract a very lunar deposit is the mining of small faces. In the use of quarrying and meohanism loading, either the height of the reinforcement used or the ventricular system is one of the most risky quarrying practices with regard to safety. The excavation on the small face is the lowest of all used mining processes and reaches only up to $ 50.

The aforementioned drawbacks and disadvantages of the known and used teohnologiocyte mining procedures of the ultra-lunar bearing will be eliminated by the principle and process of extracting the overhead portion of the ultra-lunar bearing by long-bore drilling according to the invention.

The principle and principle is based on the fact that the previously known and used principles of quarrying, mining of meohanisms and common types of lining reinforcements are used for the created face, while the ceiling part is mechanically disconnected and conquers by drilling large diameter drill holes in radooh. with selectable axial spacing of individual boreholes equal to the borehole diameter and the thickness of the borehole wall, up to the overburden or projected height according to the working range of the drilling equipment.

By applying the overhead ceiling method of the invention according to the invention with wide-diameter upper boreholes, it is possible to comprehensively mechanize the extraction of the oil's long bearing capability.

This will eliminate the need for multiple preparation of the mining block. The length of the throws compared to the previous methods of block preparation will be halved in the case of the original preparation for two benches, to one third in the case of the original preparation of the block for the mining of three lavioes, etc. An increase in the excavation is also achieved, thereby improving bearing utilization.

The intensity of the punching of the preparations for the extraction unit will be reduced, the unmanaging of the re-assembly of the face-to-face meohanisms and the extraction equipment will be reduced compared to the current state.

Increased cleanliness of mined coal or flax mineral, higher calorific value of mined coal and softening of treatment plants will be achieved. · During drilling, it is possible to actively control the drilling of excavated areas, which increases operational safety * of mining.

It will increase security by removing entry to open ceilings, or coindr.

This eliminates the need for the market, which also improves the hygiene and climatic conditions of the roasting area. The possibility of small blocks of bearing bounded by tectonics can also be realized. It will reduce the need for a fleet of mechanized reinforcements, combine harvesters and from 2012 S8 mining equipment.

A large number of mechanized reinforcements can be used and produced simultaneously.

The downturn and cost per unit will be reduced.

The ratio of productive and labor-intensive mining will be improved.

Increased operational safety will be achieved from the point of view of creating conditions for the formation of mists and fires.

The accompanying drawings show an example of a procedure for extracting a bearing of, for example, a very powerful coal seam according to the invention, wherein in FIG. 1 is a sectional view of a coal bed bearing in a plan view of a drilled borehole.

Fig. 2 shows a cross-section through the image 1 in the line A-A and FIG. 3 shows a cross-section through the image 1 in the plane B-B. In FIG. 1 shows a plan view of a part of a bearing extracted by a set of boreholes 2 and drilled in rows along a pillar, where the boreholes are offset in each row by half the axial distance of the boreholes, from the face 2; formed by the cutting drum organ of the combine harness, mechanized, e.g. The disrupted utility mineral is transported from the face space by a conveying device, eg a scraper conveyor 6. Behind the reinforcement 2) which progresses in a single shot by progressively removing the bearing pillar 7, a caving is formed or the space is established by a foundation. In FIG. 2 is a cross-sectional view of FIG. 1 in the plane A-A at the drilling location of one of the boreholes 2 by the harvester at the exposed ceiling of the face 2, by tilting the ceiling reinforcement 2; FIG. 3 shows a cross-sectional view of FIG. 1 in the plane B-B, in the portion of the face 2 before the bearing end of the bearing has been gained and the overhead portion of the bearing has been drilled from the face 2;

This example illustrates the use of the invention in the extraction of a very lunar coal seam of 12 m steel thickness with a excavation of 77.2 in the wall face. The invention can also be used in other faces of very powerful bearings, such as the chamber face, the corridor and the short face front.

Claims (2)

OBJECT OF THE INVENTION 1 / The process of extracting the overhead part of a mineral-bearing deposit by long-boring from the face by a system of wide-diameter long-well boreholes, characterized in that it mechanically disconnects and extracts the bearing to full moonness. (2) The extraction process according to claim 1, characterized in that the bearing molarity exceeds the working range of the drilling device by being divided into layers of suitable thickness. to reach.