Method for installation of flexible covering

FIELD: mining.

SUBSTANCE: invention concerns mining and can be used in mining ore bodies under protection of flexible covering. The method involves creating niches in the ore body, making down holes at the level of ore occurrence up to the lowest mark of a block, placing guideways and lag ropes, fastening them in the upper part. The method further involves boring a fan in the top wall of the ore body, in a parallel plane to occurrence of an ore body. On one charged fan of holes located in the centre against other fans, two single fans After loading the holes with explosive and detonations release of muck pile is performed. Further on, winches are mounted in the top niches, attaching lag cables, then the directing cables in the conduit are pull and used together with lag cables for stretching flexible cover in an upward direction. After stretching the covering is fixed in the top part of the block performing workout of stocks of the block.

EFFECT: increased productivity of the block during second mining, decreased labour iousness of flexible covering installation and decreased impoverishment while mining chamber stocks.

5 dwg

 

The invention relates to mining and can be used at the ore bodies under the protection of the flexible beams.

The known method of mounting a flexible cover under the overhanging tab (RF patent No. 2019714, E21F 15/00, publ. 1994.09.15). Flexible overlay form of the even and odd lines are laid along the strike of the formation, and the transverse strips are laid on the dip, rolling mesh rolls. Thus, for example, first the even-numbered strip is rolled on the width of the transverse strips ahead from the odd bands, and placed on top of them cross the line. Then roll an odd band ahead of even strips the width of the transverse strips, placed on top of the transverse strip, etc. In the mesh strips are laid in trouble. The disadvantage of this method is to narrow the scope.

Known way to move the rock mass in the chamber during the development of ore adopted for the prototype (A.S. USSR №1786882, AS 41/22, publ. 1999.09.20). The method includes the sinking of slash-and-burn drift, breaking and magazynowania mineral between the rocks hanging and lying laterally, the collapse of PetroChina block and General release of minerals under the flexible separating overlapping with the guide elements. The method is characterized by the fact that the guiding elements crepe is in shifting the roadway and as layer blasting mineral hang on hanging and lying laterally across the working height of the block to the level of PetroChina, at this level guiding elements are passed through the flexible edge of the overlapping side of the rocks and fix, and with the release of mineral guiding elements hold the hanging and lying laterally tamakaimoana minerals and collapsing wall-rocks. The disadvantage of this method is the low performance of the block associated with the need to magazynowania ore in the block and reducing the complexity of installation of flexible beams.

The technical result of this method is the increased productivity of the unit and reducing the complexity of installation of flexible beams.

The technical result is achieved in that in the method of mounting flexible floors, including the sinking of the preparatory and development workings, the installation of flexible overlay in the hanging side of the ore body using the guide elements, the breakage and the release of broken ore from the block through production release under separating the flexible overlay according to the invention after working driving issue in the corners of the block creates a niche in the thickness of the ore body across his stretch, Buryats of them descending wells in the plane of the occurrence of the ore body to the lower level unit, place them in the guides and long cables with their fastening at the top, then Buryats fan of them sets of wells in the hanging wall the side of the ore body, parallel to the plane of the occurrence of the ore body, and on one charge hole fan, located in the center relative to the rest of the fans, Buryats two idle fan of wells, after loading wells explosive and blasting make the release of broken ore, then in the upper niches mount a winch to which attached long ropes, and then guides the cables in the development release pull, and using long cables begin to stretch the flexible overlay in the upward direction, and after pulling overlap it is fixed in the upper part of the block and make the mining of the reserves of the block.

The application of the proposed method in comparison with the prototype allows to increase the capacity and reduce the complexity of mounting the flexible beams.

The method of mounting flexible overlap is illustrated by drawings, figure 1 shows a vertical section along the line b-B, figure 2 shows a horizontal section along the line A-a in figure 3 shows a section along the line C-C, figure 4 shows a vertical section along the line b-B (the step of mounting the flexible overlap), figure 5 shows a vertical section along the line b-B (phase sewage extraction), where

1 - steep ore body;

2 - niches created at the corners of the unit capacity of the ore body 1 across its stretch;

3 - rechargeable fan of wells, is the s-center relative to the rest of the fans wells;

4 - idle fan of wells;

5 - trench extended from the trench drift;

6 is an inclined exit;

7 loading races;

8 - haul drift;

9 - vent drift;

10 - linkage of the inclined junction 6 with the drill drift 11;

11 - drill drift;

12 - guide cables;

13 - blastholes for blasting inventory block;

14 - long cables;

15 is a flexible overlay in the coil;

16 - hoist associated with lingering cables 14;

hnl- height of the block, m;

Lnl- block length, m;

m - power orebody 1;

α - the angle of incidence of the ore body, expected.

The method of mounting the flexible overlay is as follows. Steep ore body 1 prepare the necessary preparatory and rifled workings. Pass delivery passage 8, the loading race 7, which is a trench roadway, expanding into the trench 5. A delivery passage 8 are inclined at exit 6, knocks vent passage 9 of the overlying horizon. Of the inclined exit 6 are linkage 10 with the drill drift 11. Also a delivery passage 8 through the corners of the block power m ore body 1 across its stretch (up to the hanging side of the ore body 1), which is limited to Lnl- length of the block and the block height of hnl, 2 niches. Of NIS 2 Buryat descending wells in the plane for which ahania ore body to the lower level unit and place them in the guides 12 and broaching 14 cables by attaching them at the top, for example, using anchors. Also from NIS 2 Buryat ascending and descending fans wells, respectively rechargeable 3 and idle the fan 4. Fans of wells 3 and 4 are drilling parallel to the plane of the occurrence of the ore body in accordance with its angle of incidence α in the immediate vicinity of the hanging side of the ore body 1. One rechargeable fan of 3 wells located in the center relative to the rest of the fans wells, drilling two idle fan 4 wells. Idle fan 4 are intended to compensate for the increase of broken ore from loosening when the rotating drum and prevent it hangs at release. After drilling rechargeable 3 blank 4 fans wells parallel to the plane of the occurrence of the ore body 1 along strike in accordance with the passport blasting, built by one of the known methods, carry out the loading of the explosive (pellet or cartridge) and the blasting charge of the fan 3. Then make the release of broken ore through the trench 5. The issue are as follows. For example, load-haul-machine (in the drawing conventionally not shown) enters the trench 5 through loading in 7, scoops up the loosened ore and transporting it at the delivery passage 8 to the nearest ore passes (in the drawing conventionally not shown). After the release of broken ore formed in shell is placed a flexible overlay in the following sequence. In the upper niches of the 2 block is mounted winch 16, which is attached long ropes 14. After that guides the cables 12 in the development release pull, for example, by using secure their cargo. Then using long cables 14 start to mount and stretch the flexible overlay 15 in the roll in the upward direction. Feeding the flexible overlay in the upward direction along the guide wires 12 will virtually eliminate the possibility of flexible overlapping while drawing and installation. Through the use of pulling winches 16 significantly reduces the complexity of installation. After pulling overlap it is fixed in the upper part of the block and make the mining of the reserves of the block. For example, in the center of the block or from one of its edges are cut-rising, expanding in cutting the slot (on the drawing conventionally not shown). Then amerivault in accordance with the passport blasting blasting hole 13 for the conditions of the stock block, explode them, air unit and produce ore from the block through the trench 5 under the protection of the flexible beams. When unstable rocks of the hanging block possible partial magazynowania ore in the unit during the period of sewage extraction to prevent rupture of the flexible beams.

The application of the proposed method of mounting flexible slab provides the following the respective advantages:

- improving the performance of the unit during the period of sewage extraction;

- reducing the complexity of the operations for mounting the flexible overlay;

- reduction of dilution when developing chamber stocks.

The method of mounting flexible floors, including the sinking of the preparatory and development workings, the installation of flexible overlay in the hanging side of the ore body using the guide elements, the breakage and the release of broken ore from the block through production release under flexible separating overlapping, characterized in that after working driving issue in the corners of the block creates a niche in the thickness of the ore body across his stretch, Buryats of them descending wells in the plane of the occurrence of the ore body to the lower level unit, place them in the guides and long cables with their fastening at the top, then the Buryats of these fan kits wells in the hanging side of the ore body, parallel to the plane of the occurrence of the ore body, and on one charge hole fan, located in the center relative to the rest of the fans, Buryats two idle fan of wells, after loading wells explosive and blasting make the release of broken ore, then in the upper niches mount a winch to which attached long ropes, and then guides the cables in the development release and pull on them is by using long ropes begin to stretch the flexible overlay in the upward direction, and after pulling overlap it is fixed in the upper part of the block and make the mining of the reserves of the block.



 

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