SU1643717A1 - Method for working out contiguous seams of minerals - Google Patents

Description

one

(21) 4676978/03

(22) 04/11/89

(46) 04/23/91. Bul Number 15

(71) Institute of Mining, Academy of Sciences of the Kazakh SSR

(72) M.G.Abuov, T.N.Ermakov, S.S.Iskakov, M.A.Kayupov I.V.Tikhanin and K.K.Tulebayev

(53) 622.274 (088.8)

(56) Instructions on the rational development of suites of the contiguous steep layers of Kuzbass. -L .; VNIMI, 1975, p. 21-32.

Khomkov V.I. Foreign experience of laying in mines. - M .: Nedra, 1984, p. 56-57.

(54) METHOD FOR DEVELOPING CLOSE LAYERS OF MINERAL RESOURCES

(57) The invention relates to the development of deposits under conditions of elevated horizontal stresses. The purpose is to increase the intensity of mining due to the continuity of the process of excavation and laying in different layers of the mineral (PI) and safety. The invention relates to the mining industry and can be used in the development of closely spaced mineral layers under elevated horizontal stresses.

The purpose of the invention is to increase the intensity of mining due to the continuity of the process of excavation and laying in different layers of mineral and safety of work due to the maintenance of the clearing notch outside the reference pressure zone in the development of near inclined layers in layers.

operation by maintaining a clearing recess outside the reference pressure zone when developing contiguous inclined formations (P) in layers. The preparatory and rifled workings pass through. The mining starts from the lower border of the PI and makes the excavation of each П separately upwards in layers for all its thickness. Working off. The PIs begin with the most deeply located Po. Then, when the cleaning grounds reach the single horizontal level, the PI layer of the lowest P is worked out. The PI layer is dug out of each subsequent upper P with simultaneous laying of the developed space (VP) of the corresponding lower P. are hardening mixtures. When excavating the PI layer of the lowest P, the EPs of the uppermost developed P. 5 are molded. 5 Il.

FIG. 1 shows a transverse-to-clone layer, worked out primarily vertical: cut; in fig. 2 is a section along A-A in FIG. one; in fig. 3 - transversely sloping layer of the next layer being worked out, vertical section; FIG. 4 is a section along BB in FIG. 3; in fig. 5 - mineral deposit 5 vertical section.

The method is carried out as follows. Preparatory workings are carried out: ventilation workings 1 along the reservoir 2 under development (Fig. 1),

for which, in addition, a backfill mixture is supplied, and mines 3 for waste rock 4 (Fig. 2), intended for rolling back the mineral. The excavation of the mineral begins with the lower limit of its occurrence. First of all, the mineral from the transversely inclined layer 5 is extracted at the full capacity of formation 2, the deepest one. The extraction of the mineral from each layer and the laying of the developed space with hardening mixtures in each layer are carried out as follows. Out of excavation 3, a drilling drift 6 is conducted along the lower part of layer 5. Such an arrangement of drift 6 allows it to be used for drainage of groundwater from the treatment space 7 of the working layer 5. Drilling of mineral layer 5 is carried out by fans of wells 8. Charging of explosives is charged and blow up. The fossil recovered in layer 5 along drift 6 is transported to production 3 and then delivered to the recess of the mine. After complete extraction of the mineral from layer 5, the developed space 7 is separated from production 3 by a jumper

9e, through the workings 1, the filling mixture 10 is fed into the developed space 7 of layer 5 (FIGS. 3 and 4). After a complete laying of the developed space 7 in layer 5, the filling of the filling mixture 10 is stopped. After the time required to harden the filling mixture

10 in the excavated space of layer 5, proceed to the excavation of the mineral from layer 11.

After a full development of the transversely inclined layer 11, the mining face 12 of the transversely inclined layer 13 of the formation 2 reaches one horizontal level 14 with the cleaning face 15 of the transversely inclined layer 16 of the formation 17 (Fig. 5). When the refining reaches 12 and 15 of the worked out layers 2 and 17 of the same horizontal level 14, firstly remove the layer 16 of the minerals of the lower working layer 17, and excavate the layer 16 of the useful minerals 17 with the simultaneous laying of the worked space of the layer 11 vereg

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after mining the mineral layer 16 and laying the mined-out space of the layer 11, excavating the mineral layer 13 of the subsequent overlying layer 2 is carried out with simultaneous laying of the mined-out space of the layer 16 of the underlying mineral formation 17. After dredging the mineral layer 13 and laying the mined-out space of the layer 16, the excavation of the layer 18 of the minerals of the lower working layer 17 is carried out with the simultaneous laying of the developed space of the layer 13 of the uppermost of the reservoir being worked out 2. The indicated order of excavation of the layers of the mineral ensures the distribution of horizontal stresses to the roof of the working faces of the reservoirs being worked out, carrying out the cleaning works outside the reference pressure zone and removing the cleaning faces when working the layers of the underlying layers occurring during the mining overlying formations, which leads to an increase in the stability of the roof of the cleaning space during the excavation of each layer and, consequently, to an increase in the safety and efficiency of zrabotki. After the layer 18 is removed and the layer 13 is laid out, the layer 19 is worked out simultaneously and the layer 18 is laid out. Then layer 20 is worked out and layer 19 is worked out. Layer 21 is simultaneously worked out and layer 20 is laid out. Layer 22 is worked out simultaneously developed space of layer 21. Simultaneously work out layer 23 and lay developed space of layer .22. At the same time, layer 24 is worked out and layer 23 is laid out. Layer 25 is worked out simultaneously and layer 24 is laid out. Layer 26 is worked out simultaneously and layer 25 is laid out. Layer 27 is also worked out simultaneously and layer 28 is laid out and layer is laid developed space of layer 27. At the same time work

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Claims (2)

Claim The method of developing close seams of minerals, including conducting preparatory and rifting workings, separate mining of the layers from the lower boundary of the occurrence of minerals, excavation of minerals from the layers from bottom to top to the entire thickness of the layer and laying of the worked out space with hardening mixtures, characterized in that, in order to increase mining intensity due to the continuity of the process of excavation and laying on different layers of the mineral and 'safety of work due to the maintenance of the mineral subsequent overlying layer 2 are simultaneous stowing layer 30 executed by the underlying layer 17, the layer 31 after the recess of minerals and stowing recess layer 30 is a layer 34 of mineral subsequent overlying layer 35 are simultaneous stowing layer 31 executed by the reservoir 2. After excavation of the mineral layer 34 and laying of the mined-out space of the layer 31, the excavation of the mineral layer 36 of the lowest mineral extraction miner outside the reference pressure eon during the development of adjacent inclined formations in layers, mining of the mineral begins with the most 3 × Q deeper layer, then upon reaching the working faces of the worked out formations of a single horizontal level work out a layer of minerals of the lowest layer, and the extraction of a layer of minerals of each last blowing overlying formation is carried out with simultaneous stowing respective underlying layer 40, the layer with the recess of the mineral itself · forward reservoir 17 are simultaneous with stowing of the uppermost layer 34 of the lower reservoir otrabatyvae- carried stowing the uppermost executed by pla · If I 5 I 1 3 Figz FIG