SU1011861A1 - Method of working rich deposits of minerals - Google Patents

Abstract

LAYOUT OF DEVELOPING THE EFFICIENT DEPOSITS OF COPY-DOORS, including the formation of an inclined cell across the entire width of the chamber, working the chambers downward with the excavation of the mineral in the layer with overlapping strokes, which, in order to improve the productivity of mining and reduce loss of mineral, overlapping strokes, in order to improve the performance of mining and reduce loss of mineral, overlapping strokes, in order to improve the performance of mining and reduce loss of minerals, overlapping strokes, in order to improve mining performance and reduce the loss of useful mineral, in order to improve mining performance and reduce the loss of useful mineral, in order to improve mining performance and reduce loss of useful mineral, in order to improve mining performance and reduce loss of mineral, an inclined cone is formed by reducing the alina roll-in as the layers are dredged, then the remaining part of the chamber stocks is refined from the formed inclined congress, while Biii The eMKy of the first roll on each layer is produced at the bead of the chambers to form along its entire length within the layer. dead-end races by holding in them (the rebels, the second and the subsequent excavations in the layer are alternately forward and backward, and the bottomhole zone at the intersections of the faces of adjacent landings in width and height is covered with shields.

Description

The image of ognosigs to the mining industry can be used in the development of the underground method of powerful mineral deposits, mainly Kamennaya sobi, with the help of combines. The known method of developing powerful flat seams of rock salt with large cross-section chambers using shearers or prokopchesky combines, the essence of KOTOJDoro consists in removing chambers with descending layers. However, this method is characterized by a low utilization rate of mining combines due to their downtime during transport and loss. chamber salt reserves in the pillars left above the inclined working. The closest to the proposed technical essence and the achieved result is the method of developing large flat layers of potash chambers of a large cross-section using tunneling machines. The essence of the method consists in forming an inclined exit for the entire width of the chamber, working out the chambers in descending layers with a notch of the mineral in the layer by stoppers with overlapping of the strokes. Two or three layers along chamber height are repaired from one excavation drift. However, the method is characterized by insufficiently high productivity of the combine when developing the first, and in a number of cases, the second initial visits on each layer, since only one self-propelled vehicle can work behind the combine. transport and combine often idle in waiting; additional losses of minerals in the pillar, left for the protection of excavation drifts, as for mining more power it is required to carry out a greater number of excavation drifts, knock them together with each other and with horizons, and, moreover, dustiness of the air and the danger of working in the bottomhole zone , since when applying moves, the executive body of the combine does not have a complete section and part of it on the side and on top of the entry is in an open cleaning space. The purpose of the invention is to increase the efficiency of the clearing recess by increasing the labor productivity at the clearing recess, reducing the loss of useful minerals and reducing the dustiness of the air in the bottom zone. The goal is achieved by the fact that, according to the method of developing powerful mineral deposits, an inclined cone is formed by reducing the length of the inlets as the layers are excavated, then c. the educated downhill exit is refining the rest. chamber stocks, with the first excavation on each layer being made at the side of the chamber with the formation of dead-end races along its entire length within the layer and holding the rebels in them, the second and subsequent visits in the layer are alternately forward and reverse running, and the bottom hole the zone at the intersection of the bottom of the adjacent approaches in width and height is covered with shields. FIG. 1 depicts: a diagram, explaining the method of development, a plan view; in fig. 2 shows a section A in FIG. one; in fig. 3- section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a schematic of the grooves. Preparing the chamber for the clearing recess consists of carrying the transport tunnel D to the full length of the chamber, cutting the neck of the chamber 2, holding the riser 3, laying the doorway 4. Driving 1 is carried out by a driving combine, for example, Ural-2OX or 4PP-2, the delivery of minerals self-propelled wagon 5ВС-15, carrying out the rising 3 by drilling a well with a drilling machine of the BGA-4 type. The cleaning work in the chamber is conducted in layers downward. The chamber is operated in two stages: first, the layers are worked up from top to bottom in one part of the chamber with the formation of a temporary inclined ramp 5 (Fig. 2) throughout the width of the chamber, then the second part of the chamber is worked out using a sloping cone in layers (Fig. 3) . Inclined exit when working out the first part of the chamber is necessary for communication with the ventilation horizon (delivery of equipment, materials, etc. to the excavation layer) and allows the chamber to be worked in layers to the full height without additional digging drifts in the pillar or carrying out inclined preparatory development . After testing the first part of the chamber, the equipment, materials, etc. are delivered over the haulage horizon. The ramp is formed due to the fact that each underlying layer is worked out shorter than the upper one by a length so that they form a safe corner of the ramp for transporting traffic. The development of the first layer consists of a postoovagular top and bottom across the width of the chamber with an overlap of holes of a drill-type combine and a late removal of the resulting tailings in the roof and on the sides, the chamber until a flat surface is obtained using a combine with a swept body. The working out of the second and subsequent layers also consists in the successive dredging of the widths of the stoppers, but with the imposition of moves. The drilling rig is not only wide, but also the height of the chamber. After the grooves, the stopovers remove the formed ledges along the sides of the chamber ... Each layer begins to be dredged from the first stowage 6, adjacent to the chamber’s side, with the formation of dead-end hauls 7 along the length of the chamber, letting clearance and unloading of self-propelled vehicles. The length of arrival is determined from the conditions of the availability of the means of transport in it, its width and the average width of the approaches. During the excavation, all the minerals from the combines 8 are delivered by self-propelled transport 9 to the insurgents 3 and, under the action of gravitational forces, they are bypassed on the raft 1, where the conveyor 4 is transported to the trunkline. The distance between dead-end races (rebels) is chosen from the water supply and to ensure the continuous operation of the harvester 8 of the drilling type with the bunker 10 when the minerals are delivered by two means of self-propelled transport. Delivery is as follows. When the combine is loaded with one vehicle, the second is unloaded at this time into the riser. The first vehicle loaded at the beginning of transportation enters the dead end, the second pass to the combine, unloads at the rising stage and awaits the arrival of the second. Repeat loop: p. For the period of the absence of the means of transport, the mineral forage harvester is loaded into a bunker bunker. At the end, the first-notch excavation 6 forms a wide dead-end ride P, allowing the combine to turn 18 °, and proceed to the excavation by reversing the second adjacent approach. Mineral from the combine is transported by means of self-propelled transport to the closest residents. At the end of the second excavation, the combine is again turned on and proceed to the third excavation adjacent to the second entry, etc. After working one layer of the combine, moving obliquely downward, it is poured onto the second layer, and then proceed to the excavation of the first approach of the second layer. Then, the remaining entries of this layer are worked out, after which, using the formed part of the temporarily inclined 5, a & "water is buried on the third layer and so continues to work until the soil of the chamber. The remaining part of the chamber reserves is processed similarly using a temporary inclined exit five.. . To reduce the dust content of air ti, ensuring safe working conditions when the combine is operated with an incomplete section of the executive body — its exit to the adjacent spent stopovers is covered by shits 12. The power supply of the combine and the self-propelled cars, as well as the ventilation of the chamber in descending order, are carried out by revolving 3 and open them as needed. The use of the proposed method of developing powerful fields, as compared with the known method, provides an increase in labor productivity for clearing the excavation by increasing the operational productivity of combines by 2–25%; reduction of mineral losses by 2–5% due to the absence of neo & no more than carrying out excavation drifts of large sections (6O70 m) or inclined workings of chambers; reduction of air dustiness and increase of labor safety in the area of operation of the combine due to shelter of the exit zone of the Executive Body of the combine into the waste zones.

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Claims (1)

METHOD FOR DEVELOPING 'POWERFUL DEPOSITS OF USEFUL IS-' Excavated including the formation of an inclined ramp along the entire width of the chamber, mining of the chambers in descending layers with the extraction of minerals in the layer by cuts with blocked strokes, characterized by gem, which, in order to increase productivity of work and reduce mineral losses in the pillars, form an inclined ramp by reducing the length approaches as the layers are excavated, then the remaining part of the chamber reserves is finalized from the formed inclined congress, while the first zhotska is excavated on each layer at the side chambers with the formation along its entire length within the layer, dead-end arrivals and carrying out rebellion in them, the second and subsequent entrances in the layer are excavated alternately by forward and reverse, and the bottom-hole zone at the intersections of the faces of adjacent approaches in width and height covered with shields.