SU1472673A1 - Method of mining a thick steep mineral bed with goaf-filling - Google Patents

Abstract

The invention relates to the mining industry and reduces labor intensity and increases the safety of mining operations. The reservoir mining is conducted in a downward order by substages along strike. The first substage is prepared by conducting the lower and upper paired excavation drifts (W) at one side of the host rocks and the middle excavation W at the other side between the pair W and fixing the excavation W. Each adjacent substage is prepared with additional excavation W from the unpaired excavation W distance from it, equal to the height of the substage. Extraction W in each chamber (K) is connected by inclined tusks. The sub-floor is worked with three-sided K across the strike of the reservoir from excavation Sh. Mineral degradation is carried out by hydrotreatment from the middle excavation Sh with repayment of oblique connections. At the same time, after digging K, before feeding the bookmarks into it, the inclined coupling of the soil K is restored, then a flexible ceiling is laid on the mounting bracket and the lower excavation W and on the soil K. 1 hp ff, 10 ill.

Description

The invention relates to mountain homogeneity and can be used in the development of steep and inclined seams of minerals with laying out of the developed space.

The aim of the invention is to reduce the labor intensity and improve the safety of mining operations.

FIG. 1 shows the scheme of preparation and working out the excavation floor with the placement of chambers and preparatory workings in it; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 - section BB in f | one; in fig. 5 is a section E-E in FIG. 2; in fig. 6 is a section of GG pa FIG. one; in fig. 7 is a section d-d in fig. one; in fig. 8 — node 1 in FIG. one; in fig. 9 is a diagram of the preparation and mining of the excavation floor with the placement of chambers, a bunker for the breed, and development workings in it; in fig. 10 is a diagram of the preparation and testing of a particularly powerful steep seam.

FIG. 1 to 10 are shown: installation layer 1, on which a flexible overlap was laid; the horizontal layer 2, on the soil of which a flexible overlap 3 was also laid and in which the wind tunnel 4 was previously left; excavation workings 5-11 as the floors 12 are being used are used to excavate coal in chambers 13, 14, transport it, ventilate and feed the bookmark; jetters 15 for coal extraction, flexible overlap 16 and pipes 17 (or a well) for ventilation are placed on the bottom, the young soil of the chambers and fixed with anchors 18; the hooks 19 on the uprights 20 and the legs x 21 are mounted above the cameras and

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WITH

serve for the safety of cleaning and backfilling; pipes 22 with openings for supplying an anchoring, for example, cement slurry; wells 23 for the impregnation of the coal mass in pillars with fastening resins; excavation 24 is used to excavate coal and feed c akladki into the chambers when cutting particularly thick steep seams; bunker 25 and tipper 26; a conveyor 27 for transporting the rock from the excavation of the mine workings to the chamber 28; a well 29 for ventilating and transporting coal from the chamber; backfill pipe 30.

The method is carried out in the following manner.

Prior to the start of cleaning works (with an unstable roof), the installation layer 1 is worked out, on the basis of which a flexible overlap is laid. Installation of the ceiling is possible through the slots. Then, a horizontal layer 2 is worked out, on which a flexible overlap is also laid and production 4 is left for laying the underlying substage 12. The subsidence of a width of 10-20 m is worked up by hydromonitors in two stages. First, odd chambers 13 are worked out, and after they have been filled with a bookmark and the array is sufficiently strengthened, even chambers 14 are taken out of them. Together with the even chambers, pods 19 are removed to the lower workings and the ventilation backfill is driven.

To develop chambers in the substage along the extent of the formation from the lower excavation production 9 to the average production 8 choices, they are drilled by the wells 29, which, in addition to airing the bottom, provide coal grazing and favorably break it. After the coal has been dredged in the chamber, the ventilation pipes 17 are placed on its inclined soil (if necessary, the pony can be restored). Above the pipes from the excavation 8, the elastic flexible overlap 16 is rolled. Before starting to start, the laying of the excavation 8, 9 is sealed. Bookmark into chambers is supplied via pipelines 30 from mine 7. It is possible, instead of hydraulics; 1 or pneumatic bookmarks are used as aggregate from the excavation of development workings. For this, a tipper 26 wagons are installed above the bunker 25. The breed from the bunker is gravity discharged onto the conveyor and further transported along the roadway to the laying chamber 28.

After the coal is excavated, the chambers 13 are dredged in the pillars 14. The broken coal is transported by gravity through the inclined part of the chamber and further along the grooves laid out to the slope (coal conveyor or pipe transportation is possible). Similarly, coal is excavated in the lower floors. When digging a corner, preparing the camera

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to bookmark and bookmark people do not need to go into the evolved space. At the end of the coal extraction, auxiliary operations are performed in the chamber — shortening the conduit, carrying the jetting machine and installing it in a new location. Pickups are installed with the camera at the site of future mating.

In order to prevent erosion of the backfill array with water jet when digging coal in the pillars, pipes 22 with openings for supplying the cementitious cement mortar are laid on the contact of the chamber with the columns, and before starting the extraction of coal in the chamber 13, the well 23 is drilled at its boundary and pressure is applied under pressure resins. Thus, when the coal is excavated in the chambers of the bead, it is not destroyed. For the safety of work on the soil of the zadacha drift gate, 21 beds are placed in which racks with pickups 19 are installed. When airing, a fresh stream of air is supplied through openings 8, 9 and further through wells 29 and 17, exhaust air goes into production 7 and further along the slope to the surface.

The proposed method of testing can

 to be used when excavating coal on particularly thick steep seams. Unlike the described preparation, here one strand 24 is drawn in the middle part of the formation. The testing of chambers is also carried out by hydraulic monitors, and during the excavation of the middle lane, simultaneously by two hydraulic monitors installed in the workings covered in lateral rocks.

Claims (2)

Invention Formula . A method for developing a powerful steep seam of a mineral with laying a developed space, which includes working the formation in sub-levels along a strike, preparing the first sub-stage by conducting the lower and upper paired excavation drifts from one side of the host rocks and the middle excavation drift from the other side between the specified drifts, fixing excavation slots, preparing each adjacent substage by conducting an additional excavation drift from the side of an unpaired excavation drift at a distance from it equal to the height substage, dredging each substage triangular chamber. ram across the seam from the excavation drift, transporting the recovered mineral to the lower excavation drift on the soil of the chamber and the bookmark 0 waste chambers, characterized in that, in order to reduce labor intensity and increase mining safety, the reservoir mining is carried out in a descending order, and the chambers in the sub-floor are dredged one through and then the pillars are removed, and the excavation chambers in each chamber are removed they are connected by oblique tusks, and the destruction of the mineral is produced by hydrotreatment from the middle 40 45 With the removal of the chamber, before feeding the bookmarks into it, the slope of the chamber is restored to the ground, then a flexible overlap is laid on the support of the indicated link and the lower excavation shaft and on the ground of the chamber. 2. A method according to claim 1, characterized in that after the laying of the tab, the fastening solution is injected at the point of its contact with pillars along perforated pipes, which are fastened fan-like on the walls of the chamber, while the pillars are impregnated with fastening resins. 7 7 1 66 A ..X..A.-.- t-Jr.  / at : 1: 11G: W Shy // /// //////////// //// ///////// srig.z gzp Eb sixteen dd 73 Srig. Eb sixteen ig.5 LL 7 7J 29 /// /// //// y / y - Y /. Do // // Do. ////// /// //BUT f CPU d. 6 ./// yy mz.l   I. I I-. ix .. -.--. - r- J .-. . iXli --- .T r -.- R -1 -. -j - :. f.-. v.; j.: ±: h- ij r / t, .- b;.,  ; fi-: L -: L; | U-V j- -  -:. T-; -. .V t .. Dzig.9 G6 thirty five Th a SrigU Compiled by B. Mashkovtsev Tehred I. VeresKorrektor M. Vasilyeva Circulation 449Subscribe 25 26 n