RU1838615C - Method for separate extraction of mineral gently dipping beds with rock interlayers - Google Patents

Abstract

Use: in the mining industry, in the development of shallow formations with a rock layer, mainly potash formations, for increasing productivity, treatment face, reducing dilution and loss of minerals when developing formations with unstable layer thicknesses. The essence of the invention: when working out potash seams with a rocky bed with unstable thicknesses of the layers, the excavation begins with the formation of the leading cut in the upper (B) layer of the mineral (PI) and at the same time in the rocky layer (PP) by at least a working width of the combine of the combine with stripping of exposed PP loading plate. As the cut is formed in the In layer, the longitudinal continuous slit is cut by the cutting mechanism for the entire power of the PP and the blocks are formed alternately with a transverse slot, which are removed from the lower (H) layer by introducing a special stripper-ekaliver under the block on the contact with the PI and moving them to the block stacker platform for the construction of pillars under the roof of the lava. The puller-clipper can be kinematically connected to the combine or mounted on the platform block. When the first leading cut is formed, the executive body is not involved, and the ore mined in the B layer is shipped to the face conveyor by the executive body using the loading plate, after the first cut is made, the combine performs idling in the opposite direction and each subsequent mining cycle is performed in one turn of the combine with driving it in the opposite direction at shunting speed. 1 3; P. 5-yrs. at E 00 with OE, I ate with

Description

The invention relates to the mining industry and can be used in the development of shallow formations with a rock layer, mainly potash layers with a rock layer.

The aim of the proposed method is to increase the productivity of the stope, to reduce dilution and loss of minerals during the development of formations with unstable layer powers.

In FIG. Figure 1 shows a diagram of the formation of a cut in the upper layer of mineral and rock interlayer before the start of treatment in the lava; figure 2 is a section aa in figure 1; in Fig. 3 is a section of a section of lava along the face with the mining of all layers in one stroke of the combine; in Fig.4 is a section bB in Fig.Z: in Fig.5 is a section bb in Fig.Z.

The method is carried out as follows.

When working out potash seams with a rocky bed with unstable layer thicknesses, the recess of the bed begins with the formation in the continuous face of the mounting chamber of the leading cut in the upper layer of the mineral and at the same time in the rocky bed by at least the width of the executive body 1 of the combine with stripping of the exposed rock the gap with the loading plate 2. As the cut is formed in the upper layer by the cutting mechanism 3, a longitudinal continuous slot 4 is cut into the entire thickness of the pedigree gap and is alternately transverse Blocks 6 are formed with a slot 5, which are removed from the bottom layer by introducing a special stripper-cleaver 7 under the block at the contact with the minerals and move them to the block-laying platform 8 to erect pillars 9 under the lava roof. In this case, a special cleaver 7 can be kinematically connected to the combine or mounted on the platform of the block scraper 8. When the first leading cut is formed before the start of cleaning work, the executive body to is not involved, and the bit is removed in the upper layer of ore by the executive body 11c using loading plate 12. After the first cut is made in the upper layer with the pillars laying out from the rock blocks, the combine harvester idles in the opposite direction and each subsequent add ary cycle is performed for one course combine to overtake it in the opposite direction to shunting, increased speed.

In this case, in each mining cycle, the bottom layer of minerals is beaten off by the executive body 10 with a lag along the front of moving the face of the lava from the upper layer by an amount not less than the width of the executive body, and the lower layer is removed freed from the rock layer in the previous mining cycle,

To reduce the dynamic loads from the side of the lava roof on the erected pillars from rock blocks, rock pillows are formed above or below them from the bayonet from cutting cracks in the rock interlayer with

fastening additives, which provide the necessary support to the roof of the lava bottom space.

The proposed method can be implemented in the development of shallow formations with a rock layer in coal, shale and other deposits.

Using the proposed method provides:

10

increasing the productivity of the stope;

reduction of dilution and loss of mineral due to removal of blocks from the rock gap through contact with the mineral of the lower layer with simultaneous excavation of the latter.

Claims (2)

1. The method of separate excavation of gentle mineral strata with a rock layer, including the excavation of the upper and lower layers of mineral by the executive body of the combine, cutting blocks from the rock layer by a mechanism cutting longitudinal and transverse gaps, the accumulation and laying of blocks by the paver in the pillars on the lava soil, and distinguished by the fact that, in order to increase the productivity of the face, reduce dilution and loss of minerals when developing formations with unstable layer thicknesses , excavation of the formation begins with the formation of the leading cut in the upper layer of the mineral and at the same time in the rocky interlayer by an amount not less than the width of the working body of the combine, while from the rock exposed above Blocks are cut out and removed from the lower layer by introducing under the block in contact with minerals a stripper-stripper installed on a combine or block layer, and each subsequent mining cycle is performed in one turn a harvester in which the upper and lower layers are simultaneously removed while cutting the blocks and stacking them in pillars under the roof of the lava, the lower layer of the mineral being removed free from the rock layer in the previous mining cycle. 2. The method according to claim 1, characterized in that, in order to reduce the dynamic loads on the erected pillars from the side of the worked-out roof, they form rock pillows from the bayonet from cutting in the rock gap with fastening additives above or below the pillars from rock blocks. 101 2 3 II 5 12 b ./ уу / АЧ ч У / Ду / ЛУУ / Д ЧУ / ЛУУ / АЧУ / ХчД at. at at V /. v v N Vl -I-- -1 / / y / yy |   / Y v v Y Y Y v L xx / // / Ill hvVA VX / XHVVXV xx v x v v / y vxv / h v- g / x FIG. I D - D and s / y OvVУXч // y. 10 FIG. 2    -.T v X - + - .L Al-gp  i. . ::, .. at M-Nsix: ... ::; - .: -. -: -. ..: .. " 4V // NN /// y // S /// VV V4 T // 4 V / yV V // V4 / X / 4xy / Vr / X FIG. 3 in 1 B - B FIG. 4 Compiled by V. Cherkasheninov Editor L. Volkova Tehred M. Morgenthal Corrector P. Gereshm ----- | - ------ ---- ------ --------------------------- ---- c., .1 GT. ШП, ГТ П ---- ,. 1..ir -, .. Order 2915 Mintage Subscription VNIIIPI of the State Committee for Inventions and Discover at the USSR State Committee for Science and Technology 113035, Moscow, Zh-35, Rauska nab., 4/5 Production and Publishing Plant Patent, Uzhhorod, 101 Gagarin St. 12 II 5 j Q - "- | / - Y / Wy / WT / AH 1 h y y h v y V / yV V // V4 / in 1 B - B FIG. 5