SU1675557A1 - Method for opencast mining of minerals - Google Patents

Abstract

The invention relates to mining promet and is intended for opencast mining of mineral deposits. The goal is to increase the efficiency of mining with the use of railway, automobile or automobile conveyor. The invention relates to the mining industry and can be used in the open mining of mineral deposits. The purpose of the invention is to increase the efficiency of mining with the use of rail, road or road-conveyor transport by increasing the volume of rock mass extracted by one position of transport communications. FIG. 1-3 shows the positions of the working side of the pit in terms of and in terms of transport by increasing the volume of rock mass extracted by one position of transport communications (GC). The career field is divided into sections. Some areas on the working board (RB) of the quarry are treated with the transportation of mined rock mass, and in other areas they form a temporary non-working board (VNB). At the same time, TCs are formed at the VNB and the mined rock mass is transported through them. When the front of mining operations is moved by the magnitude of the shift pitch of the VC pillar, the RB is formed in the VNB with the transfer of the TC to it and the drawdown of the TC of this section during the re-preservation of the VNB. The value of Vc is determined by the formula Vz - 2VHHu (ctg -) (Vu - 2 Vn), where Vn is the average speed of the RB movement, determined by the velocity and direction of the pit pit, m / year, Nc is the total height of the ledges of the horizon block VNB, m, p is the angle of inclination of the RB, 1 / is the angle of inclination of the NVR, Uts is the average speed of the steps moving up when the VNB is separated, m / year. 3 il. S C at the beginning of the three time stages I, II and III when developing one of the sections of the block of horizons using rail transport. Positions 1-6 denote horizon numbers. The Provisional Congresses provide for the opening of a block of four horizons 2, 3, 4 and 5. Line 7 divides this block into two sections: No. 1 and N 2. At the beginning of stage I, the mentioned horizons are temporarily the inoperative position is in the pillar, and the system of temporary railway congresses is located on the section from the next

Description

No. 1. With the use of the system of time congresses, the horizons of plot No. 2 were worked out, carried out successive separation of the horizons of the rear pill from top to bottom with advancing them to the distance of the step of shifting Вц.

The position of the mining operations at the beginning of stage II (Fig. 2) is characterized by the beginning of the advancement of the ledge on the lower horizon of the rear sight - horizon 5. By this time, all the overlying horizons of the rear sight are separated, i.e. In horizons 2, 3 and 4, there are working platforms of an appropriate width, enabling the creation of conditions for advancing the ledges at high speed. FIG. 2 presents the case when, by the beginning of stage II, the ledge of horizon 2 was advanced to the distance of the step of shifting Вz, which marked the beginning of the formation of the rear sight pillar in the new position with simultaneous laying of the system of railway congresses at section 2.

By the beginning of Stage III (Fig. 3), the remaining horizons 3, 4 and 5 are also listed in the rear pillar in its new position and the system of temporary congresses in the second section was finally formed, using which the horizons of plot No. 1, freed from railway tracks. Then the cycle of movement of the ledges at both sites is repeated.

The development of each of the sections of the horizon block is carried out with advancing the steps by the advancing step defined by the formula

about - 2 Vn Hu (ctg u-ctgy) Vc Vu-2Vn

where Вц is the step of advancing the rear sight, m;

Vn is the average speed of movement of the working side, determined by the speed and direction of the dredging pit, m / year;

Нц - the total height of the ledges of the block of horizons of the temporarily non-working side, m; RC is the angle of inclination of the working side in the area of the separation of the pillar, hail;

Tr is the angle of inclination of the side pillar, hail Vu - speed of movement of the working side in the area of the pillar spacing, m / year.

Claims (1)

Formula and s o bat Method for open development of mineral deposits, including dividing the quarry floor into sections, working out some areas on the working board a quarry with the transportation of mined rock mass, the formation of a temporarily non-working board in other areas and the re-activation of temporarily non-working areas, characterized in that increasing the efficiency of mining with the use of rail, road or road-conveyor transport by increasing the volume of rock mass extracted by one position of transport communications, transport communications form on a temporary non-working board and transport the extracted rock mass through it, magnitude  2 Up NtsSsgd c-sgdt /;) Vu - 2 Vn where Вц is the step of shifting the rear sight, m; Vn is the average speed of movement of the working side, determined by the speed and direction of the dredging pit, m / year; Нц - the total height of the ledges of the block of horizons of the temporarily non-working side, m; 0Etz tilt angle of a working board, hail .; y - tilt angle temporarily non-working board, hail,; UC - average speed of the step elevation when the temporary non-working side is carried, m / year, the formation of a working board in the temporarily non-working board is carried out by transferring to it transport communications and operating when re-provisioning the temporary non-working board of transport communications this site. Bt N2 L 7f L L L HI r I. I I 2. / / 2. / v- / v;