RU2000012C1 - Method of opencast mining of horizontal and gently sloping mineral deposits - Google Patents

Abstract

SUMMARY OF THE INVENTION: A transverse trench runs along the bottom of the quarry across the front of the mining operations, the bulk part of the transport-dump bridge (TOP) is constructed in it, and as the front of the work progresses, the entire rear axle is constructed. At the same time, the side of the transverse trench is widened parallel to the first trench, after which the bulk of the second TOP is also built in it and the whole is also left. As the front of the work progresses, the first trench is covered with dump rocks, and the whole part is worked out. At the same time, they begin to build the bulk of the TOP in the newly prepared first trench and repeat the entire cycle of work. 3 ill.

Description

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

The purpose of the invention is to remedy these drawbacks.

The proposed method is illustrated in the drawings, where in FIG. 1-3, shows all stages of mining quarry.

In FIG. Figure 1 shows a diagram of the state of mining operations in a quarry. Figure 1a shows a quarry mined by one pair of centrally located parallel-stepping transport-dump jumpers (TOP) of a combined whole-bulk structure. Fig. 1b shows a quarry with a long front of mining, worked out by two pairs of parallel-stepping TOP combined combined-bulk construction.

In Fig.2 shows a cross-section aa in Fig.1 of the mined space of the quarry with the built in it TOP combined integral bulk design.

On Fig. 3 shows a sequence diagram of the operation in the construction of paired parallel-stepping TOP combined integer-bulk construction.

The construction and development of TOP are carried out in the following sequence: sinking of the transverse trench along the bottom of the quarry with excavation of minerals and overburden rocks of the overburden benches (FIG. 3): construction of the bulk part of the overburden of TOP No. 1 at the bottom in the prepared transverse trench (FIG. Zb) ; the construction of the entire part of the TOP No. 1 coaxially in the bulk part by the method of leaving the entire mining and overhanging ledges in a stronger development of overburden and excavation and mineral deposits; simultaneously r goo73 C

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by loading the entire part of the TOP 1 at the bottom of the quarry, the side of the transverse trench N is carried; 2 in parallel with TOP No. 1, from the overburden rocks the bulk part of the TOP Ns 2 is built in it, and it is built at once from two sides simultaneously: from the side of the trench in the overburden and mining ledges and from the front of the internal dump, the overburden is moved to the dump TOP Mg 1 (Fig. Sv); the construction of the bulk part of the Ns 2 top is being completed, along which overburden rocks are now moving to the internal dump, the bulk part of the Nb 1 top is disassembled, and the whole part is prepared for disassembly by overburden and mining excavators; over the second TOP, overburden rocks move to internal dumps, in the extended (spaced) to the left of TOP Kb 2 a transverse trench on the bottom of the quarry, from the overburden rocks in parallel to TOP Ns 2, the bulk part of TOP N: 1 is constructed (Fig. Zd).

Further, all operations are repeated.

The advantages of the proposed method compared to the prototype can be shown in the following example.

If, for example, front movement

mining operations with a length of 3.5 km is 300 m / year, the length of the top according to the prototype will be 100 m, and by the proposed method it will be at least 180 m.

The prototype method will require

build 3 pairs of TOP in a year, i.e. every 4 months, and in the proposed method - 1.66 pairs of jumpers, i.e. they will need to be built only after 7 months.

Thus, the proposed technical solution has the following advantages: the volume of over-excavation of the head parts of the bridges adjacent to the working ledges is reduced by 1.8 times; almost doubles the life of one

combined TOP: qualitative and quantitative losses of minerals are significantly reduced, since the number of joints of the heads of the bulk parts of the TOP with the end parts is halved

mining ledges in the transverse trench.

Claims (1)

SUMMARY OF THE INVENTION A method for open-pit mining of horizontal and dipping mineral deposits, including mining overburden and mining ledges, dumping internal dumps into a quarry mined space with the construction of transport and dump lintels from overburden rocks, characterized in that, for the purpose of reduction of overexcavation volumes, reduction of losses and dilution, a transverse trench with a mining of minerals runs along the bottom of the quarry across the front of mining of the mining ledge and overburden rocks of the overhanging ledges, the bulk part of the transport and dumping lintel is constructed in the trench, and then, as the front of the work progresses, the pillars, which serves as its continuation, are constructed along the axis of the transport and dump lintel, while simultaneously extending the side of the transverse trench parallel to the first trench after which the bulk part of the second transport and dump bulkhead is constructed and, as the front of the work progresses, the bulk part of the bulkhead in the first trench is filled up with the dump rocks, the whole part of the mine they’ll be built, and by this time, as the front of work progresses along the axis of the second bridge, a pillar is built that serves as a continuation of its bulk part, which, as the front of the work is further advanced, is covered with dump rocks and at the same time they begin to build the bulk part of the bridge in the first trench prepared again by this time and the whole cycle is repeated. f Tselikoba part of the jumper  ///// U / A yyupups / BABY && ZЈ3EЈZ & gЈZ: d h N LJ H NJ ledge - a layer of mineral Fie. 1 Editor Tehred M. Morgenthal Order 3039 Circulation NGO Search for Rospatent 113035. Moscow, Zh-35, Rauska nab., 4/5 Aa Bulk of the jumper I J / V.V f dnutrenmy - oglbal d h N scr ptrt / tffilM ,1 : TT I1 jI Us ai uih Corrector P. Gereshi