SU912934A1 - Method of strip mining of mineral deposits - Google Patents

Description

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

There is a method of opencast mining of mineral deposits, which includes the development of ledges by recesses, leaving a bridge between the overburden and internal waste dumps located between the opposing split trenches perpendicular to the front of the work and used for installing vehicles, in particular, conveyor 1.

The disadvantage of this method is the presence of mineral loss in the subsoil under the whole-bridging and significant costs for moving the overburden into the internal dump.

There is a known method for developing mineral deposits, which includes the development of ledges by entry, the formation of a transport bridge between the overburden ledges and internal dumps, the transportation of overburden rocks along this jumper to the dump and its redemption after use 2.

The disadvantage of the method is. that the only one at the same time poured and redeemed transport linch ob) glorifies the use of only one set of excavation and transport equipment, because of the chugch) the possibility of concentration and intensification is excluded ::; Open work and dumping.

In addition, the rebuilding of the lintel, which moves along the front of the job over the entire length of the quarry floor, necessitates re-excavation of a significant amount of rock and forced downtime of the stripping equipment due to periodic permutation of the vehicles 15 located on the lintel and communications.

The purpose of the invention is to reduce transportation costs and intensify mining operations.

Delivered tsch. One achieves those m, which are divided into sections along the length, in each of which a transport jumper is arranged, and then a lower russia internal dump is poured from these jumpers.

The drawing shows s.ma implementation of the proposed method.

With the open development of horizontal mineral deposits, overburden strips along the length are divided by transport lintels 1 into sections 2, which are worked by excavators 3 or wheel loaders 4. Transport lintels are developed into a dump by expanding their adjacent parts. The dumping and redemption of jumpers is made independently of each other. The redemption of ocyn.ie is established by dragline 5 when working on the lower ledge 6, in case of rock formations using drilling and blasting operations. The overburden rocks are delivered from the faces to the internal dumps by 7 wheel loaders or dump trucks 8 along transport links that provide the shortest transportation distance. When working out the next step, the cycle is repeated.

The use of this method allows to increase the efficiency of the development of horizontal deposits due to the concentration and intensification of the production of mining operations, as well as reducing the cost of mixing, overburden rocks in the dump.

Claims (2)

1. USSR Author's Certificate No. 343042, cl. E 21 C 41/00, 1970. 2. USSR author's certificate for application No. 2634813/03, cl. E 21 C 41/00, 1978 (prototype).