SU1638302A1 - Method of mining ore bodies - Google Patents

Abstract

The invention relates to the mining industry and m. used in underground mining of minerals with oakladkoy developed space. The purpose of the invention is to expand the scope by increasing the safety of the development. A group of floors is prepared for simultaneous mining, and the stocks of the floor are taken out in sections in three stages. At the first stage, the flank chambers (FCs) in the sections of the advanced floor (OE) are first worked and laid out, and the central chambers in the MA sections are worked out and laid down in the second place. After that, in the second stage, the reserves of the sections of the subsequent floor (PE) are worked out. The stocks of the vertical sections of the OE and PE are worked in the opposite direction, and the FC of the vertical section of the PE is worked out on contact with the spent and laid down FC of the horizontal OE section after the reserves of the central chamber of the OE section are completed. Stocks of chambers of the third line of the whole group of floors are worked out at the third stage from top to bottom. The developed space of the upper floor of the group is completely laid with hardening material, and the developed space of the chambers of the third stage is laid with a cementless foundation, for example, empty rock or tailings. 2 hp f-ly, 10 ill. CO G

Description

The invention relates to the mining industry and can be used in the underground mining of minerals with the laying of the goaf.

The purpose of the invention is to expand the scope by increasing the safety of the development.

Figures 1 to 5 show the development sequence in the top-down version of the excavation of floors with three-chamber sections; Figures 6-10 are the same, four-chamber sections.

In the drawing indicated: 1 - haulage; 2 - delivery development; 3 - loading stars; 4 - trench excavation.

The development of ore deposits involves the excavation of a group of floors in any order; bottom to top, top to bottom, and simultaneously up and down. Stocks of each floor are taken out in sections of three lines. The number of chambers in a section can be any, but it should be borne in mind that in the first place and the third they beat off the ore only in one flank chamber, and in the second place in the central part of the section,

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where any number of cameras can be located.

Preparation for simultaneous development of a group of floors is carried out by sinking delivery 2, drilling and discharge 4 workings in sections.

At the first stage in the group of floors, the cameras of the first and second stages of the section of the advanced floor are successively taken out and laid.

The preparation of the bottom of the chambers is carried out by sinking from haulage-1, delivery-2, loading-3 and trench-4 workings. In this case, in the variant of three-chamber sections, the excavation workings 2 pass in the contour of the chambers of the third turn of adjacent sections, and in the variant of four-chamber sections, the additional workings pass on the border of the chamber of the first and adjacent chambers of the second turn.

First of all, the first level chambers are worked and laid out. L Secondly, chambers of delivery 2, connecting 3, trench 4 openings are prepared by chambers 2 of the second turn of leading floor sections I, drilling wells, repulsing chamber reserves, displaced rock mass, To the image of the developed space, which is then filled with a hardening tab 3.

The excavation of the reserves of the next floor II (second stage) begins with the penetration of delivery, drilling and exhaust workings. Chamber 1 of section C2 of the subsequent floor H is worked out on contact with the spent and pledged chamber 1 of the first stage of section Ci, adjacent to section Ci of the advanced floor I, i.e. The testing of the chamber 1 adjacent to the height of the section of the subsequent floor Cr starts from the opposite flank of the section Ci and leads in the opposite direction.

Similarly, the remaining chambers 1 of the first stage of the next floor II are being tested, i.e. each chamber 1 of the next floor is processed on contact with the chamber 1 of the first stage of the advanced floor, and on contact with the camera 1 of the horizontally adjacent section of the advanced floor. As a result of such working off of the chambers of adjacent floors, the bottom of the chamber of the overlying floor is simultaneously the arch of the chamber or chambers of the lower floor of the non-adjacent section, i.e. The common contact of the cameras of the first stage are the sections located diagonally.

After the ore has been crushed and the chambers 1 of the first stage of the next floor II have been laid down, the chambers 2 of the second

the queues in the sections, as a result of which the nerted stocks of the sections of the advanced floor are contoured from the top of the host rocks

2 of the second line of the same section and camera 1 of the first line of the adjacent section, below - the cameras of the first 1 and second 2 regular (adjacent vertically) sections of the next floor.

0 The development of stocks of chambers of the third line of the whole group of floors is carried out in the third stage from top to bottom for any order of mining group. Such an order is necessary to ensure the sustainability of the delivery

5 workings 2. In another order of working out chambers 3 of the third stage, the delivery working is in contact with the developed space of the camera of the third stage of the lower floor.

0After working out the first 1 and second 2

next chambers of the next floor II proceed to the development of stocks of the next floor III. At the same time, the second floor II becomes advanced in relation to

5 to the third floor III in the group, and the third floor III, respectively, becomes subsequent to floor II.

With unstable host rocks or, if necessary, reliable storage of the array above the mining horizons, the upper floor in the group is completely laid with a hardening tab, and the chambers of the third line of the group are filled with empty rock or tailings.

Claims (3)

1. A method for developing ore deposits, including drilling of drilling, sufficient and final workings, phased joint ore extraction in a group of floors, ore excavation within the floor in sections, breaking ore in each section, first of all in the flank chamber, laying the spent space of the first chambers , breaking the ore in each section secondarily in the central chamber, laying the mined-out space of the central chambers, breaking the ore and laying the depleted space in the remaining chambers of the section in the third turn, In order to expand the field of application by increasing the safety of the development, in the first stage, the ore is beaten and the developed space is laid in the chambers of the first and second queues of the advanced floor, then in the opposite direction, the ore is beaten and the the space developed by the chambers of the first and second phase of the vertical sections of the subsequent floor, while the ore in chambers of the first stage are fought off on contact with the laid out developed space of the chamber of the first stage adjacent horizontally to the section of the advanced floor, and at the third stage, successively with the direction from top to bottom in the group, they beat off the ore and lay the developed space in the chambers of the third stage. 2. The method according to claim 1, about tl and h and y and with the fact that the developed space of the upper floor in the group completely lay hardening material. 3. A method according to claim 1, characterized in that the space generated by the chambers of the third stage is laid with a cementless bookmark, FIG. / FIG. 2 Fig.8 FIG. 9 FIG. ten