SU1467181A1 - Method of working benches - Google Patents

Abstract

This invention relates to the mining industry. The purpose of the invention is to provide safe working conditions when working out rock breaks that exceed the maximum permissible for excavation equipment. The recessing of the ledge is carried out with the division of the collapse of the rock into the steps. The collapse of rocks, exceeding the maximum permissible height according to the condition of safety, is removed from the lower sub-approach. After working out the upper sub-step, the rock is transferred from the next block to the lower sub-stem. Combine the collapse of the rock from the scarp soil to a height that does not exceed the maximum allowable condition for working out the combined collapse of rocks in the specified block, and then work out the remaining part of the c collapse with a height exceeding the maximum allowable, divided into sub-steps.

Description

The invention relates to the mining industry and can be used in open pit mining.

 The purpose of the invention is to provide safe working conditions in the development of rock breaks that exceed the maximum permissible for excavation equipment.

The method is carried out as follows.

The development of the ledge is carried out in blocks. Drilling and blasting operations are carried out with the formation of rock camber, then the rock that has been blasted in the block with permissible camber height, according to the condition of safe operation of the excavation equipment, is slaughtered to the full camber height.

When moving the bottom in zones with a camber height exceeding the maximum permissible according to the condition of safety. The camber is divided into upper and lower access points. The development of rock collapse was carried out from the lower sub-step. After the upper sub-stage has been worked out, the drilling and blasting operations are carried out on the next, after the finished block. The rock of the block is moved by the explosion to the lower level and forms the combined camber of the rock. The collapse rock combined in such a way is worked off from the ledge soil to the collapse height, not exceeding 3

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; The maximum permissible safety of working excavation equipment, and the rock of the collapse of the working block in areas with a height exceeding the maximum permissible, is worked out by dividing the memory into equal parts in a similar order.

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Claims (1)

Invention Formula I Method of development of ledges, including 1 hakhshchk consecutive sledging of blocks of rocks, working out of the section of rocks with excavation equipment with division of the collapse into upper and lower: sub pods, vvratnoe movement of the subsequent block to the lower stratum of the previous block and forming -: Unification of the joint collapse of rocks, which is characterized by the fact that, for the purpose of safe working conditions in the development of rock breaks, which exceed the maximum permissible lengths of the excavation equipment, mining of rocks in the block is carried out from the ground Stupas to the height of the collapse, not exceeding the maximum allowable, then from the lower subpath, reproducing the rocks of the upper subpath in the specified block, while forming a unified camber of the rocks in the reprocessing block to a height not exceeding the maximum permissible by the condition of working out a unified rocks in the specified block from the soil scarp, after which operations are repeated, starting with working out the collapse of the rocks in the block from the scarp soil.