CN114109485A - Ore chute and crushing system of underground adjacent unloading station - Google Patents
Ore chute and crushing system of underground adjacent unloading station Download PDFInfo
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- CN114109485A CN114109485A CN202111448976.1A CN202111448976A CN114109485A CN 114109485 A CN114109485 A CN 114109485A CN 202111448976 A CN202111448976 A CN 202111448976A CN 114109485 A CN114109485 A CN 114109485A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/002—Crushing devices specifically for conveying in mines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
- E21F13/045—Bunkers specially adapted for mining purposes
Abstract
The invention relates to the technical field of mining of metal and nonmetal ores, in particular to an ore sliding and crushing system close to an unloading station underground. According to the invention, a bottom-dump type mine car is used for unloading, an innovative arrangement form is adopted, the crushing chamber is arranged laterally for crushing, the limited height difference from the unloading elevation to the loading elevation is fully utilized, and the positions of the unloading station, the raw ore bin and the powder ore bin are reasonably arranged in a limited space, so that the unloading and lifting capacities of a blind shaft system are matched with the crushing and lifting capacities of a main shaft, the maximization of the capacity of the ore bin and the ore processing capacity is realized, and the problems of ore crushing, natural accumulation of ores in the ore bin, vehicle sticking and the like caused by the height difference from the unloading position to the loading position being less than 30 m are effectively solved.
Description
Technical Field
The invention relates to the technical field of mining of metal and nonmetal ores, in particular to an ore sliding and crushing system close to an unloading station underground, which is suitable for mining ore bodies with small height difference from an unloading middle section to an ore loading middle section and poor ore mobility.
Background
The arrangement of an underground ore crushing system in the prior art mainly solves the mutual relation among projects such as a main well, a crusher chamber, an upper ore bin, a lower ore bin (a chute), an ore unloading chamber, a belt channel, a metering chamber and the like; this correlation is determined by two directions: one is the mutual position relation of each single project in the underground crushing system in the horizontal direction; the other is the mutual position relation of the single projects in the vertical direction.
Traditional ore is swift current put and crushing process arranges the vibration ore drawing machine in ore deposit storehouse lower part, adopt the side dump formula mine car side direction to unload the ore into the ore deposit storehouse that is located breaker upper portion, put into the breaker the ore through the ore drawing machine, the ore after the breakage gets into lower part ore deposit storehouse, then pack into the skip through the ore loading belt and promote (see fig. 5 ~ 6), the ore deposit storehouse major axis of this arrangement and the central line of breaker are in same vertical plane (both horizontal projection coincidence promptly), and be parallel to each other with the major axis of unloading, it is less to the well promotion ore loading position difference of unloading position in the middle section of transportation, ore mobility is poor, ore nature angle of repose is less than the ore body, the lower defect of extraction efficiency exists in this kind of structure setting, concrete reason is as follows:
(1) because the unloading height of the middle transportation section is fixed with the loading height of the skip bucket and cannot be adjusted, the length of an unloading ore bin is short, the bottom angle of the ore bin is slow, the bottom angle of the ore bin is only about 35 degrees generally, and because the ore has high water viscosity, the ore less than 60 degrees in the ore bin hardly flows and is naturally accumulated on one side of the ore bin, the effective volume and the effective opening in the ore bin are greatly reduced, so that the production efficiency is reduced, and the unloading and crushing capacity is only 45 ten thousand t/a;
(2) the long axis of the ore bin and the central line of the crusher are in the same vertical plane (the horizontal projection of the long axis of the ore bin and the central line of the crusher are superposed), and the inclination angle of one side of the ore bin, which is close to the crushing chamber, is about 80 degrees, so that the volume of the ore bin is limited;
in addition, because the ore has high water-containing viscosity, the ore is adhered to the bottom of the car during lateral ore unloading and is difficult to completely unload, and the ore occupying about one third of the volume of the mine car in actual work is adhered to the bottom of the car for a long time, so that the transportation efficiency is greatly reduced.
Based on the reason, often need handle the ore of piling up in ore bin one side and pasting at the vehicle bottom through the manual work, not only increased the cost of labor, moreover indirect influence mining efficiency.
Disclosure of Invention
Aiming at the problems, the invention provides a mine mining method which is suitable for mining the stable rock mass, small height difference from the middle section transportation unloading position to the vertical shaft hoisting ore loading position, poor ore fluidity and ore natural repose angle not more than 60 degrees.
The purpose of the invention is realized by the following technical scheme:
an ore chute and crushing system proximate a down-hole unloading station: the method is suitable for mining metal and nonmetal mines with stable rock mass, height difference of less than 30 meters from a middle section transportation unloading position to a vertical shaft hoisting ore loading position, poor ore flowability and ore natural repose angle of less than 60 degrees;
the technical scheme comprises a crushing chamber, a raw ore bin, an unloading station, a powder ore bin, a metering chamber and a bottom dump type mine car for carrying various middle-section ores;
vertically arranging a crushing chamber, a powder ore bin and a metering chamber below the lowest-layer mining middle section, and arranging an unloading station at the side part of the crushing chamber, wherein the crushing chamber is positioned at one side of an ore discharge port of the unloading station and is close to the unloading station; the elevation of the bottom plate of the crushing chamber is lower than that of the bottom plate of the unloading station, and the long axis direction of the crushing chamber is parallel to that of the unloading station;
the unloading station is a bottom-dump type unloading station, is communicated with the transportation middle section of the lowest-layer mining middle section and is matched with a bottom-dump type mine car to carry ores; the upper mining middle section is communicated with the side part of the unloading station through an upper middle section drop shaft;
arranging raw ore bins on the side part of the crushing chamber, wherein bin bodies of the raw ore bins are obliquely arranged, the axis of the bin bodies is vertical to the long axis direction of the unloading station, the top parts of the raw ore bins are communicated with the bottom part of the unloading station through ore discharge ports, and the bottom parts of the raw ore bins are communicated with the side part of the crushing chamber; a crusher is arranged in the crushing chamber, and the central line of the crusher is vertical to the long axis direction of the unloading station;
the bin bodies of the powder bin are obliquely arranged, the top of the powder bin is communicated with the bottom of the crushing chamber, and the bottom of the powder bin is communicated with the side part or the top of the metering chamber;
the metering chamber is connected with a blind shaft for lifting ore, and a metering hopper is arranged in the metering chamber;
the crushing chamber serves the lowest layer and the mining middle sections above the lowest layer, and ores in the mining middle sections at the lowest layer are carried by a bottom-dump mine car and directly unloaded into a raw ore bin from an ore discharge port of an unloading station; the ores of the upper mining middle section (namely, each middle section above the lowest middle section) are unloaded to an upper middle section drop shaft from the upper mining middle section to the lowest mining middle section through a bottom dump type mine car, enter an unloading station and are converged into a raw ore bin 4 through an ore discharge port;
the ore entering the raw ore bin enters the crushing chamber downwards, the ore crushed by the crusher falls into the powder ore bin, and enters the metering chamber downwards along the powder ore bin, and is weighed by the metering hopper, then is loaded into the skip and is lifted to the earth surface along the blind vertical shaft.
Further, the height difference between the unloading station bottom plate and the crushing chamber bottom plate is 11-12 meters, and the height difference between the crushing chamber bottom plate and the measuring chamber bottom plate or the ore loading position is 12-13 meters.
Furthermore, the horizontal distance between the crushing chamber and the unloading station is 4-6 meters, the wall body of the crushing chamber positioned on one side of the raw ore bin is reinforced, and the thickness of the wall body is not less than 0.8 meter.
Further, the bin body inclination angle of the raw ore bin is 60 degrees.
Further, the cross section of the bin body of the raw ore bin is circular, the minimum distance between the wall of the raw ore bin and the wall of the crushing chamber is more than or equal to 1m, and the lining of the raw ore bin is reinforced by a manganese steel plate with the thickness of not less than 20 mm; the volume of the raw ore bin is 100-109 cubic meters, and the wall body is poured by reinforced concrete.
Further, the bin body inclination angle of the powder ore bin is 60 degrees.
Further, the cross section of the powder ore bin body is circular, and the volume of the powder ore bin is 75-77 cubic meters.
Furthermore, the specification of the crushing chamber is 10-15 meters long, 8-10 meters wide and 12-15 meters high, and the top plate is arched.
Furthermore, the crushing chamber is provided with an equipment large piece channel and a pedestrian passageway, the equipment large piece channel is connected with a middle section gallery by adopting inclined shaft arrangement, and is connected with a sublevel through the middle section gallery; the pedestrian passageway adopts a ladder passageway, leads to a middle-section gallery from the top of the crushing chamber and is used for emergency pedestrians and ventilation.
Furthermore, a dust removal hole is formed in the top of the crushing chamber, and the dust removal hole is connected with a water sump of the middle-section gallery and used for dust removal of crushing equipment in the chamber.
The invention has the beneficial effects that:
the ore slipping and crushing system provided by the invention covers a whole set of technology of process technology and safety guarantee, is suitable for mines with stable rock mass, small height difference from an unloading middle section to an loading middle section, poor ore fluidity, stuck bottom of an unloading car and no more than 60 degrees of natural repose angle of ore, uses a bottom-dump mine car to unload ore, adopts an innovative arrangement form, arranges crushing chambers laterally to crush, fully utilizes the limited height difference from an unloading elevation to an loading elevation, and reasonably arranges the positions of an unloading station, a raw ore bin and a powder ore bin in a limited space, so that the unloading and lifting capacities of a blind well system are matched with the crushing and lifting capacities of a main well, the maximization of the capacity of the ore bin and the ore processing capacity is realized, and the problems of ore crushing with the height difference from the unloading position to the loading position being less than 30 meters, natural ore stacking and sticking in the ore bin and the like are effectively solved; according to the technical scheme, the problem that the blind shaft skip bucket is damaged by large ores is solved while the ore crushing efficiency and the lifting capacity are improved, and great economic benefits and social benefits are obtained.
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic view of the ore discharge and crushing process of the present invention (mainly reflecting the mutual relationship of the projects of the unloading station, the upper bin, the crushing chamber, the lower bin, the loading chamber, etc. on the vertical elevation);
fig. 2 is a diagram showing the relationship between the crushing chamber and the major channel (which mainly reflects the vertical-face interrelation between the major channel, the safety exit and the dust removal channel of the crushing chamber);
FIG. 3 is a plan view of the crushing chamber, the unloading station, the safety vent and the dust removal holes of the present invention;
figure 4 is a schematic plan view of the crushing chamber of the present invention;
FIG. 5 is a schematic view of a conventional ore pass and break system;
figure 6 is a top view of a conventional ore pass and break system.
Detailed Description
In the figure: 1-upper midspan, 2-upper-pan ore-drawing machine, 3-unloading station, 4-raw ore bin, 5-feeding ore-drawing machine, 6-crushing chamber, 7-crushing machine, 8-powder ore bin, 9-metering ore-drawing machine, 10-metering chamber, 11-metering hopper, 12-skip, 13-blind shaft, 14-equipment large-scale road, 15-midspan, 16-manway, 17-dust-removing hole, 18-side-dump car, 19-unloading ore bin, 20-stacked ore.
Examples
The scheme of ore slipping and crushing is suitable for mining metal and nonmetal mines with stable rock mass, height difference from the middle section transportation unloading position to the vertical shaft hoisting ore loading position smaller than 30 meters, poor ore flowability and ore natural repose angle smaller than 60 degrees.
The ore sliding and crushing system comprises a crushing chamber 6, a raw ore bin 4, an unloading station 3, a powder ore bin 8, a metering chamber 10 and a bottom dump type mine car for carrying various middle-section ores;
the method comprises the steps that a crushing chamber 6, a powder ore bin 8 and a metering chamber 10 are vertically arranged below the lowest-layer mining middle section, an unloading station 3 is arranged on the side portion of the crushing chamber 6, the crushing chamber 6 is located on one side of an ore discharge port of the unloading station 3 and is close to the unloading station 3, the long axis direction of the crushing chamber 6 is parallel to the long axis direction of the unloading station 3, and the elevation of a bottom plate of the crushing chamber 6 is lower than that of the bottom plate of the unloading station 3.
The unloading station 3 is a bottom-unloading type unloading station, and a curved rail unloading mechanism is arranged in the unloading station; this bottom discharge unloading station communicates with the transportation level of the lowest layer exploitation middle section, and the upper portion exploitation middle section passes through upper portion middle section drop shaft 1 and the lateral part intercommunication of bottom discharge unloading station to lay upper portion drop shaft ore drawing machine 2 at upper portion middle section drop shaft 1 end (be upper portion middle section drop shaft and unloading station intercommunication department).
The specification of the crushing chamber is 10-15 meters long, 8-10 meters wide and 12-15 meters high, and a top plate of the crushing chamber is arched; the height difference between the unloading station bottom plate and the crushing chamber bottom plate is 11-12 meters, and the horizontal distance between the crushing chamber 6 and the unloading station 3 is 4-6 meters.
The lateral part of the crushing chamber 6 is provided with a raw ore bin 4, the bin body of the raw ore bin 4 is obliquely arranged at an inclination angle of 60 degrees with the horizontal plane, the axis of the bin body is perpendicular to the long axis direction of the unloading station 3, the top of the raw ore bin 4 is communicated with the bottom of the unloading station 3 through an ore discharge port, the bottom of the raw ore bin 4 is communicated with the lateral part of the crushing chamber 6, and a feeding ore drawing machine 5 is arranged at the joint of the raw ore bin and the crushing chamber.
The wall body of the crushing chamber close to one side of the raw ore bin is reinforced, and the thickness of the wall body is not less than 0.8 m; a crusher 7 is arranged in the crushing chamber 6, and the central line of the crusher 7 is vertical to the long axis direction of the unloading station 3.
The bin bodies of the powder bin 8 are obliquely arranged, and the included angle between the bin bodies and the horizontal plane is 60 degrees; the top of the powder bin 8 is communicated with the bottom of the crushing chamber 6, the bottom of the powder bin is communicated with the side or the top of the metering chamber 10, and a metering ore drawing machine 9 is arranged at the connection part (the inlet of the metering chamber) of the lower end of the powder bin and the metering chamber; the height difference between the crushing chamber bottom plate and the metering chamber bottom plate or the ore loading position is 12-13 m.
The metering chamber 10 is connected with a blind shaft 13 for ore lifting, and a metering hopper 11 is arranged in the metering chamber 10.
In the embodiment, the crushing chamber is 10 meters long, 8.5 meters wide and 12 meters high; the horizontal distance between the crushing chamber and the wall of the unloading station is 4 meters (the nearest distance is not less than 4 meters), the wall of the crushing chamber positioned on one side of the raw ore bin is reinforced, and the thickness of the wall is more than or equal to 0.8 meter; the height difference between the unloading station bottom plate and the crushing chamber bottom plate is 12 meters, and the height difference between the crushing chamber bottom plate and the metering chamber bottom plate or the ore loading position is 13 meters.
The crushing chamber is provided with two safety outlets: an equipment large passage 14 and a man-way passage 16;
the equipment major tunnel 14 is arranged by adopting an inclined shaft with an inclination angle of 25 degrees, is connected to the crushing chamber from the auxiliary wellhead through a middle-section gallery and is used for downwards amplifying equipment, materials and normal pedestrians, and a rail lifting stable vehicle is arranged in the equipment major tunnel (the inclined shaft);
the pedestrian passageway adopts a ladder passageway, is arranged at the top of the crushing chamber 6 and serves as an emergency safety outlet, and is communicated to a middle section gallery from the top of the crushing chamber 6 and serves as emergency pedestrians and ventilation.
In addition, a dust removal hole 17 is reserved on the other side of the top plate of the crushing chamber, the crusher is connected with the dust removal hole 17, and the dust removal hole is communicated with a water sump of the middle-section gallery and used for dust removal of crushing equipment in the chamber.
The cross section of the raw ore bin 4 in this embodiment is circular, the horizontal projection of the axis is perpendicular to the long axis of the unloading station, so as to maximize the sufficient unloading length and the capacity of the raw ore bin, the capacity of the raw ore bin is 100-109 cubic meters, and the ore storage capacity is about 218 tons (about the ore drawing amount of 5 trains); the wall body of the raw ore bin is poured by reinforced concrete, in order to prevent the side wall of the crushing chamber from being damaged by ore impact and friction when the unloading station unloads ores, the minimum distance between the raw ore bin and the crushing chamber is more than or equal to 1m, and a wear-resistant manganese steel plate with the thickness not less than 20mm is lined in the raw ore bin for reinforcement, so that the safety and the reliability between the ore bin and the crushing chamber are ensured.
The cross section of the bin body of the fine ore bin 8 is also designed to be circular, the volume of the fine ore bin is 75-77 cubic meters, the ore storage capacity is about 154 tons, and the requirement of lifting a blind shaft skip for 30 times can be met.
The crushing system of the ore slipping and crushing process serves the mining middle section at the lowest layer and above, and the ore at the mining middle section at the lowest layer is carried by a bottom-dump mine car and directly unloaded into a raw ore bin 4 from an ore discharge port of an unloading station 3; each mining middle section of the upper layer is communicated to the lowest mining middle section through an upper middle section chute 1, ores of the upper mining middle section are unloaded to the upper middle section chute 1 through a bottom dump car, descend along the chute and are unloaded into an unloading station 3 through an upper chute ore-drawing machine 2 at the tail end of the chute in a controlled manner, and are collected into a raw ore bin 4 through an ore discharge port; in the embodiment, each middle section adopts the bottom-dump mine car to unload, so that the adhesion of ores to the bottom of the car is effectively avoided, and the unloading efficiency is greatly improved.
Ore entering a raw ore bin 4 descends along the bin body, is controllably put into a crushing chamber 6 located in the middle section of the lowest layer through a feeding ore drawing machine 5 located at the lower end of the raw ore bin for crushing, and the ore crushed by a crusher 7 falls into a powder ore bin 8, is descended along the powder ore bin 8, is drawn through a metering ore drawing machine 9, enters a metering chamber 10, is weighed by a metering hopper 11, is put into a skip 12, and is lifted to the earth surface along a blind shaft 13.
Compared with the traditional ore sliding and crushing process, the technical scheme of the invention constructs the crushing chamber close to the unloading station side, reasonably distributes the spatial position relation of each single project in the underground crushing system, effectively increases the bin body inclination angle of the ore bin, solves the problems that the production efficiency is influenced by the natural accumulation of ores caused by the short length and the slow angle of the bin bottom of the unloading ore bin, and the like, improves the ore unloading and crushing capacity from 45 ten thousand t/a to 120 ten thousand t/a in the prior art, and realizes the optimal matching of the ore unloading and lifting capacity of the blind well system and the crushing and lifting capacity of the main well.
All the operations of the process of the invention are performed under the support body, thus ensuring the construction safety:
firstly, determining the length, the width and the height of a crushing chamber according to the specification of a crusher, the specification of a crown block and the like, then carrying out numerical simulation calculation through rock mechanical properties, verifying the maximum span and the maximum allowable exposed area of the crushing chamber, determining the angle of an ore bin according to the natural repose angle of ore of 60 degrees after the specification of the chamber is determined, determining the arrangement position and the elevation of the chamber, and uniformly distributing the volumes of a raw ore bin and a powder ore bin, thereby determining the process arrangement form.
Secondly, a rock mass reinforcing technology is adopted, a supporting process that a large-span arch is formed by excavating the unloading station foundation pit and the crushing chamber is adopted, a cement slurry long anchor cable is adopted to pre-reinforce the top plate rock mass before excavation, the unloading station foundation pit and the top of the crushing chamber are excavated after pre-reinforcement, and the crushing chamber and the unloading station are separated by adopting a measure of constructing a separation beam in the middle after excavation so as to reduce the excavated span. Parallel resin long anchor cables are constructed on one side of the unloading station to reinforce the top plate; one side of the crushing chamber is reinforced by a 4-meter long mortar anchor rod according to the mesh of 1m multiplied by 1m, so that the construction safety is ensured.
And thirdly, carrying out sectional excavation and sectional pouring process on the large-span chamber. The crushing chamber is 10 meters long, the vault is poured for three times, firstly, excavation and support are carried out from the side of the sliding shaft, then, the middle part is constructed, and finally, one side of the original rock is constructed, and construction is carried out for 3.0-3.5 meters each time.
Fourthly, constructing the crushing chamber from top to bottom, excavating and supporting the vault firstly, and then excavating and supporting downwards. And the vault reinforcement is connected with an anchor rod constructed on the top plate to suspend the concrete of the vault part. And under the protection of the top plate, sequentially excavating the chamber wall parts downwards.
And fifthly, constructing a crushing chamber at the side close to the unloading station, thereby effectively solving the crushing problem that the unloading level and the loading level have a height difference of only 20 meters.
And sixthly, the digital electronic detonator and the blasting vibration tester are applied, the high-precision digital electronic detonator is adopted to excavate the chamber by adopting a controlled blasting technology, the blasting vibration tester is adopted to test blasting vibration periodically, the single-shot dosage is effectively controlled, the influence of chamber excavation on a surrounding main chute and a blind shaft is avoided, and safe construction is guaranteed.
And seventhly, scanning the excavation profile by using a goaf scanner and adopting a VS150-MK3 three-dimensional laser scanner, accurately calculating the excavation volume, and the thickness of the surrounding engineering rock mass, and adjusting the support thickness.
Finally, it should be noted that: the above embodiments are intended to illustrate rather than limit the technical solution of the present invention, and those skilled in the art should modify the embodiments or substitute part of the technical features without departing from the spirit of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims.
Claims (10)
1. The scheme is suitable for mining metal and nonmetal mines with stable rock masses, height difference from a middle section transportation unloading position to a vertical shaft hoisting ore loading position smaller than 30 meters, poor ore flowability and ore natural repose angle smaller than 60 degrees;
the method is characterized in that: comprises a crushing chamber (6), a raw ore bin (4), an unloading station (3), a powder ore bin (8), a metering chamber (10) and a bottom dump car for carrying middle-section ores;
a crushing chamber (6), a powder ore bin (8) and a metering chamber (10) are vertically arranged below the lowest mining middle section, and an unloading station (3) is arranged on the side part of the crushing chamber (6), so that the crushing chamber (6) is positioned on one side of an ore discharge port of the unloading station (3) and is close to the unloading station (3); the elevation of the bottom plate of the crushing chamber (6) is lower than that of the bottom plate of the unloading station (3), and the long axis direction of the crushing chamber (6) is parallel to the long axis direction of the unloading station (3);
the unloading station (3) is a bottom-dump type unloading station, is communicated with the transportation middle section of the lowest mining middle section and is matched with a bottom-dump type mine car to carry ores; the upper mining middle section is communicated with the side part of the unloading station (3) through an upper middle section drop shaft (1);
arranging a raw ore bin (4) on the side part of the crushing chamber (6), wherein the bin body of the raw ore bin (4) is obliquely arranged, the axis of the bin body is vertical to the long axis direction of the unloading station (3), the top of the raw ore bin (4) is communicated with the bottom of the unloading station (3) through an ore discharge port, and the bottom of the raw ore bin (4) is communicated with the side part of the crushing chamber (6); a crusher (7) is arranged in the crushing chamber (6), and the central line of the crusher (7) is vertical to the long axis direction of the unloading station (3);
the bin bodies of the powder bin (8) are obliquely arranged, the top of the powder bin (8) is communicated with the bottom of the crushing chamber (6), and the bottom of the powder bin is communicated with the side part or the top of the metering chamber (10);
the metering chamber (10) is connected with a blind shaft (13) for lifting ore, and a metering hopper (11) is arranged in the metering chamber (10);
the crushing chamber (6) serves the lowest layer and the mining middle sections above, and ores in the lowest layer mining middle sections are carried by a bottom-dump mine car and directly unloaded into the raw ore bin (4) from an ore discharge port of the unloading station (3); the ores in the upper mining middle section are unloaded to an upper middle section drop shaft (1) from the upper mining middle section to the lowest mining middle section through a bottom dump type mine car, enter a unloading station (3) and are converged into a raw ore bin (4) through an ore discharge port;
the ore entering the raw ore bin (4) flows downwards into the crushing chamber (6), the crushed ore falls into the powder ore bin (8), flows downwards into the metering chamber (10) along the powder ore bin (8), is weighed by the metering hopper (11), then is loaded into the skip (12), and is lifted to the earth surface along the blind vertical shaft (13).
2. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the height difference between the unloading station bottom plate and the crushing chamber bottom plate is 11-12 meters, and the height difference between the crushing chamber bottom plate and the measuring chamber bottom plate or the ore loading position is 12-13 meters.
3. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the horizontal distance between the crushing chamber and the unloading station is 4-6 m, the wall body of the crushing chamber located on one side of the raw ore bin is reinforced, and the thickness of the wall body is not less than 0.8 m.
4. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the bin body inclination angle of the raw ore bin is 60 degrees.
5. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the cross section of the raw ore bin is circular, the minimum distance between the raw ore bin and the crushing chamber is more than or equal to 1m, and the lining of the raw ore bin is reinforced by a manganese steel plate with the thickness of not less than 20 mm; the volume of the raw ore bin is 100-109 cubic meters, and the wall body is poured by reinforced concrete.
6. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the bin body inclination angle of the fine ore bin is 60 degrees.
7. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the cross section of the powder ore bin is circular, and the volume of the powder ore bin is 75-77 cubic meters.
8. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the crushing chamber is 10-15 meters long, 8-10 meters wide, 12-15 meters high, and the top plate is arched.
9. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: the crushing chamber is provided with an equipment large piece channel (14) and a pedestrian passageway (16), the equipment large piece channel (14) is connected with a middle section gallery by adopting inclined shaft arrangement, and is connected with a sublevel through the middle section gallery; the pedestrian passageway adopts a ladder passageway, leads to a middle-section gallery from the top of the crushing chamber (6) and is used for emergency pedestrians and ventilation.
10. A system for ore pass-through and comminution in close proximity to a down-hole unloading station as in claim 1 wherein: and the top of the crushing chamber is provided with a dust removal hole (17), and the dust removal hole (17) is connected with a water sump of the middle-section drift and used for removing dust of crushing equipment in the chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111448976.1A CN114109485A (en) | 2021-12-01 | 2021-12-01 | Ore chute and crushing system of underground adjacent unloading station |
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| CN202111448976.1A CN114109485A (en) | 2021-12-01 | 2021-12-01 | Ore chute and crushing system of underground adjacent unloading station |
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| CN114109485A true CN114109485A (en) | 2022-03-01 |
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| CN202111448976.1A Pending CN114109485A (en) | 2021-12-01 | 2021-12-01 | Ore chute and crushing system of underground adjacent unloading station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306471A (en) * | 2022-06-22 | 2022-11-08 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306471A (en) * | 2022-06-22 | 2022-11-08 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
| CN115306471B (en) * | 2022-06-22 | 2023-03-10 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Optimized construction method of blind mixed well sliding-breaking system |
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