SU1071025A1 - Method of preparing for developing steep ore bodies - Google Patents

Abstract

METHOD OF PREPARATION AND DEVELOPMENT OF LARGE-FALLING ORE BODIES, including the carrying out of preparatory and drilling workings, cutting of reserves, separation of the block-shield from the array along the block boundaries and the roof to a height of not less than the block height by blasting deep explosive wells, bore-hole blasting and machining. - protection under the action of its own weight by putting into operation a deposited ore on the haul horizon and landing the block-shield on the bottom of the underlying spent block, characterized in that, in order to reduce the volume Preparatory-rifling works and increasing the productivity and concentration of drilling operations, drilling riots in the body of the block are passed in front of the pro segment and self-propelled drilling complexes are mounted in them, drilling riders are connected to each other by sabotage along the axis of the workings of the ventilation horizon, and in the lower part, at the mark of the upper limit of the cutting of the adjacent block, drilling and breaking of the adjacent block is carried out from the self-propelled drilling complex through conductors, which are installed They are drilled in horizontal wells of a shield block, with the blasting being performed from bottom to top.

Description

The invention relates to the mining industry and can be used in the development of ore bodies with stable host rocks or ores and the release of broken ore under natural (ore or rock) separating floors.

There is a method of developing ore bodies, including the breaking of ore under the protection of the console in the roof, the collapse of the console monolithic block after release drilled and exploded wells from drilling.

The disadvantage of this method is the relatively large amount of preparatory-rifled work.

The closest to the proposed technical essence and the achieved result is a method of preparing and developing steeply dipping ore bodies, including carrying out preparatory and drilling workings, cutting down reserves, separating the block-shield from the massif along the block boundaries and the roof to a height not less than the block height by blasting deep blastholes, borehole blasting and ore storage, block-block movement under its own weight by releasing maged ore on the haul horizon and landing block-block and on the bottom of the underlying waste unit.

The disadvantage of this method is a significant amount of preparatory-rifled work, a low level of concentration and low productivity of drilling operations.

The purpose of the invention is to reduce the amount of preparatory-rifling work and increase productivity and concentration of drilling operations.

The goal is achieved by the fact that in the method of preparing and developing steeply dipping ore bodies, including carrying out preparatory and drilling workings, cutting reserves, separating the shield block from the massif along the block boundaries and the roof to a height of not less than the block height by blasting deep wells, bore holes and storage of ore, movement of the block shield under the action of its own weight by discharging the mated ore to the hauling horizon and planting of the lock shield on the bottom of the underlying spent block, passing The drilling rigs in the body block are in front of its segment and self-propelled drilling complexes are mounted in them, the drilling rigs are interconnected with taps, which in the upper part of the block shield pass along the axis. the ventilation horizon current, and the bottom 6 - at the mark of the upper limit of the hooking of the adjacent block, drilling and breaking of the adjacent block

It is produced from a self-propelled drilling complex through conductors, which are installed in horizontal wells of the block-shield, with the breaking taken from the bottom up.

5 Figure 1 shows a section of the ore body being worked across the strike and the position of the ore block-shield before it is separated from the massif; in fig. 2 the same, along the strike of the ore body and the position of the ore block shield during the drilling of reserves of the adjacent block; on fig.Z - section aa in figure 2; figure 4 - section bb in figure 2; figure 5 - part of the ore

5 shields during drilling the reserves of the adjacent block.

The method is as follows.

in a way. The block shield 1, depending on the strength and stability of the ores and host rocks, is formed with ore or rock, and if necessary, its army. They are reinforced with reinforced concrete lining, for example, in wells drilled in the body of block-board 1, steel ropes or rods are made and then concrete is cast (the reinforcement of the block-board is not shown in the drawing).

At the same time as the ore is being mined by the underlying block 2, revolving drilling rigs 3 are held in the body of the block shield 1, which are interconnected with drawbacks 4 and 5. The number of drilling ascending mines 3 depends on the size of the block shield 1 across the strike of the ore body. The excavations (sovki) 4 and 5 pass along the axes of the workings that were previously supplied to the main body. The production (build-up) 4 passes in the upper part of the shield 1 along the axis of the workings 6 and 7 of the ventilation horizon. Development (sboki) 5 passes in the lower part of the block-shield 1 at the mark of the upper boundary of the sub-hook 8 of the adjacent block 91

After the ore 5 of the underlying block 2 has been fully stocked and the mines 3, 4, and 5 have been excavated, the block shield 1 is separated in the body of the shield 1 and removed from the array and transferred to the magnetized ore of the lower block 2. in order not to: collapses sbyki 4 and 5 when separating the block-shield 1 from the array and bypassing it by two-three and more floors, but not less than the height of the block 2 being worked. After landing the block-shield 1 on the substitute, the gas ore of block 2 is produced evenly -sequential release of a gas ore p planograms and landing shield block 1 at the bottom of the unit 2, vscherzhivani For a given direction of movement of laziness shield block 1 in its lower portion make chamfers at an angle equal to the angle of repose of the ore or close to it. When the shield block 1 gets stuck during its movement on the bottom of block 2 (when the cleaning space narrows in the lower part), explosive explosions are performed to eliminate the distortions of the block shield 1 after the first shield block moves to the bottom of the underlying block 2 spaces loose bookmark 10, such as rock from tunneling or overburden. . Bulk bookmark 10 is fed into the space at the same time as lowering of the shield 1 from a fixed loading point, for example, through the stowing hole 11 or in the working of the uppermost ventilation-stowing horizon (the design of the ventilation-stowing horizon is not shown). After landing block 1 on the bottom of block 2, connectors 4 and 5 are connected to the windings previously supplied to the ore body, and the outlets (crashes) 4 are to the windings 6 and 7 of the ventilation horizon, and the windings 5) The workings 12 carried out at the mark of the upper limit of the notch 8. At the connection points of the earlier connections with the sleds 4 and 5, the lining 13 is installed. Control of the combination of the previously brought operations with the sluggers 4 and 5 is accomplished by drilling test wells from the previously supplied plants 6 and 12 Simultaneously with the installation itself the downstream drilling equipment 14 performs an intersection of an adjacent block 9, after which its reserves are drilled by horizontal fans 15 to the lower boundary of the shield 16. The reserves of the adjacent block 9 are drilled through ore 17 through the jig I installed in the wells of block 1 1. After the complete ore is mined by blasting the explosive wells 15 from the bottom up, the next block of the block 16 is separated from the bottom up to the podchechnoe space (cutting down 8), and further technological operations for block block reserves, separation and transfer The e-block 16 is repeated in this way. In the case of multi-storey mining of ore bodies, the shield-shield 1 is bypassed by the indicated Method by two-three and more floors. The advancement of the cleaning works of the overlying floor relative to the lower floor should be at least 100-150 m. The filling of the developed space is carried out with a dry bookmark 10 through the overlying chambers from a permanent loading point. Using the proposed method will expand the scope of development systems with a floor-forced collapse and bring them closer in terms of losses and ore depletion to chamber development systems.

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Claims (1)

METHOD FOR PREPARATION AND DEVELOPMENT OF SHELL-MINING ORE BODIES, including · conducting preparatory and drilling workings, cutting stocks, separating the block shield from the array along the block boundaries and the roof to a height not less than the height of the block by breaking deep explosive boreholes, bumping and ore mining moving the block shield under its own weight by releasing stained ore to the return horizon and landing the block shield on the bottom of the underlying spent block, characterized in that, in order to reduce the volume of preparation and rifling operations and increasing productivity and concentration of drilling operations, drilling rigs are held in the body of the block shield before its cutting and they are mounted in self-propelled drilling complexes, drilling risers are interconnected by failures, which in the upper part of the block shield pass along the axis of the ventilation horizon, and in the lower part - at the mark of the upper boundary of the cutoff of the adjacent block, drilling and breaking of the adjacent block is carried out from a self-propelled drilling complex through conductors that are installed in the mountains zontally wells shield block, wherein the breaking is performed from the bottom up. 1 1l