SU1710739A1 - Method of mining mineral deposits - Google Patents

Abstract

The invention relates to the development of steeply dipping mineral deposits. The goal is to reduce the loss of broken ore and reduce the consumption of live materials during the development of steeply dipping deposits. Passing loading and hauling and drilling operations. The latter pass along the sides of the chamber on the side of the ore massif. A continuous subsurface ore excavation is carried out from top to bottom with the chambers displaced one relative to the other on the substages. Ore beat off drilling and blasting wells. In the process of removing the chambers from the drilling chambers, blast-shaped inclined wells between the sublevel-slit subsurfaces in the upper corners of the adjacent chambers are formed. Offset cameras. when excavated, one relative to another is carried out on their width. The production of ore on the sub-floors is made from the ends of the loading and hauling workings and by passing it through the connections — to the lower sub-floor. After the ore has been discharged from all the chambers, a simultaneous hardening mixture of all the chambers on the sleep podhozhakh is laid: * Starting with a mixture of increased npQH- 's on slam-flicks, and then the remaining voids with low-strength mixtures. 6 Fig. S (L S

Description

The invention relates to mining and can be used in the underground mining of steeply dipping mineral deposits, mainly in the extraction of valuable medium stability and unstable ores and host rocks. The same stability.

There is a method of developing steeply dipping deposits, which includes a continuous sublevel chamber ore extraction with the laying of the developed /

the countries are hardening mixtures, penetration of loading and excavation workings, borehole blasting and ore production, on the sub-floors.

The disadvantage of the known method of development is the increased cost of backfilling due to alternate blasting and release of ore from the chambers and their consecutive bookmarking on the sub-floors with a homogeneous hardening mixture and the need to drill backfilling workings to each

chamber and pipelines to them stowing pipelines, increased ore losses at the bottom of the chambers, since temporarily left ore is repulsed on the bottom in the dead zones in each chamber on the sub-floors contacts with the tab, impregnates and fastens it, in the distance. The most significant part of this ore being transferred to the lower-processed chamber is significantly less.

The closest to the technical essence and the achieved effect to the proposed method is the development of deposits, including sinking of loading and hauling and drilling workings, continuous subsurface ore extraction chambers from the top to the bottom with displacement relative to each other on the subfloors, drilling ore drilling and drilling | 0tbit ore, ore output in subsoil | and laying of the developed space; hardening mixtures; I The disadvantage of the known development method is significant loss of ore in ertvyh zones at the bottom of each chamber substages by reason of filling impregnated and bonded with a mixture of broken ore and the inability to pre-feed a bookmark in its bypass chamber from the upper to the lower substages. The voids are filled with mixtures of uniform strength, which leads to an increase in the flow rate of the living materials;

The purpose of the invention is to reduce the loss of broken ore and reduce the consumption of live materials in the development of steeply dipping deposits.

The goal is achieved by the fact that in the method of developing the field, which includes sinking of loading and supplying and drilling workings, a continuous subsurface ore excavation from top to bottom with chambers displaced one relative to another on sublevels, blasting ore by drilling and blasting wells, storing ore logging, producing ore in supers and laying the worked-out area with hardening mixtures, drilling workings are passing along the sides of the kama from the side of the ore massif, in the process of extraction | and chambers from drilling workings are formed by the explosion of inclined wells between the sub-floors of the connecting-slit in the upper corners of adjacent chambers, during removal, one chamber relative to the other is carried out on their width, the ore on the sub-floors is produced from the ends of the loading and delivery heads. and by passing it through sbyki-slits to the underlying substation, after the release of all chambers, the tab is carried out simultaneously on all chambers on the supersitions, first by feeding a hardening mixture of increased strength through sloshing slits, and then filling the remaining empty t low strength blends.

The arrangement of drilling workings along the sides of the chambers on the side of the ore massif and the design of the process of a convoy from these workings by the explosion of inclined wells between the substates of the gaps-slots in the upper corners of adjacent chambers directly under the left broken ore on the bottom of the chambers in the dead zones allows cut the broken ore into the downstream chambers, exclude soaking and bonding with bookmark and reduce the loss of ore due to this.

Offset chambers on sublevels one relative to another. On their width and release of broken ore from fan chambers, it is possible to simultaneously lay down all chambers on the sub-floors, first by hardening a mixture of increased strength, then filling the remaining voids with low-strength mixtures, which reduces the consumption in stitching materials in a bookmark.

In addition, the implementation of simultaneous laying of chambers on all sub-floors by supplying hardening mixes through the upper chamber and shedding-slits in the vertically adjacent chambers allows arranging the route of stowing workings and pipelines: on one upper sub-site. 3.0 times the cost of drilling stowing workings, laying and dismantling of stowing pipelines, as well as reducing the operating costs of maintaining them.

Claims (1)

FIG. Figure 1 shows a vertical section along the strike of a portion of the ore deposit being mined at the stage of drilling the ore massif, breaking it down and partially releasing the ore during its storage in chambers in the sub-floors; in fig. 2 - vertical section along the strike of a part of the ore deposit being worked out at the stage of simultaneous production of laying works in chambers on the sub-floors; in fig. 3 part of the chamber in the stage of ore released from it, cross section; FIG. 4 is a section A-A in FIG. 3; in fig. 5 is a section BB in FIG. t; in fig. 6 is a sectional view BB in FIG. 5. In FIG. 1-6 show the transport sublevel workings 1, races 2, drilling wells 3, loading and haul workings 4, blast holes 5, hardening mixture 6 of increased strength, hardening mixture 7 of reduced strength, cleaning chamber 8, beat-up ore store 9 in the chamber, ore Chamber 10 array, ore 11 in the dead zone repulsed, forming output figures 12, connecting gap 13, temporarily leaving ore lA on the bottom, inclined bore holes 15 for shaping mounting gap, ore deposit 1b of ore deposit, insulating strips 17, filling pipelinesI8 and backfill Bbipa6otki 19. The design method is carried out as follows. From the inclined exit located on the flank of the ore deposit, transport openings 1 pass to each sub-floor, of which through openings 2 pass drilling openings 3 along the lateral sides of the chambers from the side of the ore massif and loading and delivery openings k, which are simultaneously backfilling and ventilation openings from which solid floor-to-chamber chamber excavation is carried out with borehole blasting of 5 ores and the laying of the developed space with hardening mixtures of increased 6 and reduced 7 / strength. Treatment chambers 8 on the floors one; relatively different in width and worked in the direction from top to bottom by successively storing and mass production of ORE 9 through the ends of loading and eternal workings 4. Ore array of chamber 10 is drilled and blown by wells 5. Rejected ore 9 is produced by IE loading and delivery workings A, and temporarily leaving the ore to the dead zones 11, the ogre on the bottom of the unobtrusive forming figure of release 12 is bypassed into the downstream chambers through the sheddings-slots 13. At the same time, an insignificant amount remains of the chamber bottom The ore 1, which is further impregnated and bonded with a bookmark, as a result, the losses of the broken out Fault-slot 13 in the upper corners of adjacent chambers are significantly reduced by blasting inclined wells $ 1 between the subsurface drilling holes 3 adjacent to the ore body of the deposit 16, well 15 they explode with the last turn sequentially at the moment of the next explosion of the section of wells 5 in the ore massif of chamber 10. After the release of the gassed ore 9, of all the chambers in the sublevels, they are simultaneously laid down first by feeding hardening high-strength mixtures 6. After slamming the chambers 13, and then filling the remaining voids with low-strength mixtures 7, having pre-installed 4 insulating bridges 17 in the loading and delivery workings. The hardening mixtures are fed through the upper chamber 8 through the filling pipe 18. workings 1U. The height of the sub-floor, the parameters of chambers and mine workings are determined depending on the stability of the ores and host rocks, as well as the strength of the filling mass. P r and m er. The developed development method is implemented when one of the sections of the Tishinsky deposit is developed, which is represented by a steeply dipping ore deposit with a capacity of 20, 30 m of valuable ores of medium stability with host rocks of medium stability and unstable. The ore deposit is opened by drop by storey field transport-haul and backfill-ion vents of 5 and 10.5 m, which are interconnected by ore releases and back-up riser meters, the floor height is 60 m. The section of the ore mine is solid subsurface - chambered excavation of ore with laying the worked-out space with hardening mixtures and the use of self-propelled equipment with i development, the front of the cleaning works at all at the same time (Fig. 1-6), the main parameters of the excavation: the height of the chambers is 15 m; The height of the floor, 8–10 m wide, 20–30 m long, is equal to the thickness of the ore deposit, the standard strength of the bookmark is A, 5–5 MPa (solid mixture of increased strength) and 1.0–1.5 MPa (hardening mixture strength) at three months of age. The preparation of the site consists in penetrating from the inclined exit S 12.5 m2 at each substage in the recumbent side of the traffic drift m and in the side of the backfill and ventilation drift, 5, connected through 50 m between each other ortah S 10.5 M. drift diepe3 races, 5 m pass trough excavation 3 along the sides of the chambers from the side of the ore field and loading-haul: drift 4 in the design boundaries of the chambers, after which start a clearing recess. The cleaning chambers 8 on the floors are located with one offset relative to the other by their width and are worked from the top downwards by sequential storage and mass production of ore 9 through the ends of the subsurface loading and haul drift 4m using the TORO-200 PDM. The ore massif of the chamber 10 is drilled and blown up by wells with a diameter of 105 mm and an LNS of 2.2-2.3 m using LPS-3 drilling rigs. To bypass from the upper chambers to the underlying hardening mixtures and left at the bottom of the chambers in the dead zones of broken ore in the process of dredging in the upper corners of adjacent chambers, make up the shedding-slits 13 by the explosion of inclined wells 15 from the drilling workings 3 adjacent to the ore massif of the 1b deposit. At the same time, wells 15 are blown up in the last turn sequentially at the moment of the next explosion of the drilling of wells 5 in the ore massif cam | 10. Bypassing the ore from the dead zones of the upper chambers to the downstream through the connections-slit 13 reduces the loss of ore in the whole area (block) to the nd (abs.). After the release of the gassed ore 9 of all the chambers on the sublevels, they were simultaneously laid out first by supplying a hardening mixture of increased strength of 6-, 5-5.0 MPa, forming a backfill array on the bottom and near the side of the chamber adjacent to the ore massif, and then filling the remaining voids with low strength mixtures 7 1.0-1.5 MPa. Before laying the chambers, pre-installed in the loading-and-drift drifts k are insulating concrete lintels 17. Hardening mixtures are fed through the upper chamber 8 through the stowing pipelines 18 drawn from the backfill drifters and IS workings located in the lying side. . The mixtures are prepared from the tailings of the concentration plant with cement consumption of 230 and 100-J50 kg / m of the mixture, respectively, of increased and decreased strength. After hardening of the backfill array (in 1 day), the cycle of cleaning works in the chambers on the floors is repeated. The use of the scheme of simultaneous bookmarking of cameras through sborki-slits and the use of multi-layered bookmarks can reduce the consumption of cement as a binder material by 1.5–2 times and reduce the cost of backfilling work in the unit by 2.5–3 times. By reducing the costs of penetration backfilling, laying and dismantling of backfilling pipelines. Claims of Invention The method of mining, including penetration of loading and hauling and drilling workings, continuous subsurface excavation from top to bottom with cameras displaced one relative to another on the subfloors, blasting ore by drilling and blasting a well, selling broken. ores, ore output on subfloors and laying of the worked-out space with hardening mixtures, from and 4 so that, in order to reduce the losses of broken ore and reduce the consumption of raw materials during the development of steep deposits, drilling along the sides of the chambers from the side of the ore massif, in the process of dredging chambers from drilling workings, an explosion of inclined wells is made between the substages of the shedding-slit in the upper corners of adjacent chambers, the displacement of chambers during excavation / one relative to the other Inu, ore production on sublevels is produced from the ends of the loading and hauling workings and by passing it through the connections to the lower floor after release of ore from all chambers, all of the kaMep in the sublevels are laid at the same time, first supplying a hardening mixture of increased strength according to shed-pecks, and then filling the remaining voids with low strength mixtures. 8 jfi / is: -FIG.1 18 1 li / J2  РXL 6 7 FIGS. 3 4 8 5 4 7 .-: -: U: 4 uL ..