CN112360465B - Continuous mining method for strip mine by using drum shearer - Google Patents
Continuous mining method for strip mine by using drum shearer Download PDFInfo
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- CN112360465B CN112360465B CN202011244226.8A CN202011244226A CN112360465B CN 112360465 B CN112360465 B CN 112360465B CN 202011244226 A CN202011244226 A CN 202011244226A CN 112360465 B CN112360465 B CN 112360465B
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- belt conveyor
- crawler
- transverse moving
- drum
- mining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
- E21C41/28—Methods of surface mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention provides a continuous mining mode of an open pit mine by using a drum shearer, which comprises the following steps: (1) The drum continuous miner arranged on the working face carries out continuous mining operation on the lower layer first mining face and/or the upper layer propelling face; (2) The materials excavated by the drum continuous miner are transferred to a traversing belt conveyor of a traversing conveying platform through a transferring belt conveyor, and the traversing conveying platform integrally moves and follows along with the pushing of a working surface; (3) The material is conveyed to the movable belt conveyor through the movable belt conveyor, and the movable belt conveyor can move along with the movable belt conveyor; (4) And conveying the materials to an outer bin of a stope through a movable belt conveyor, and finally realizing continuous mining operation of the strip mine. The continuous mining mode of the strip mine solves a plurality of problems existing in the traditional truck transportation of the mining of the strip mine, realizes the self-moving of conveying equipment along with the pushing of the working face, realizes the continuous mining of the strip mine, and greatly improves the yield and benefit.
Description
Technical Field
The invention belongs to the field of open-pit mining, and particularly relates to a continuous open-pit mining method using a drum shearer.
Background
The traditional mining mode of the strip mine adopts a single bucket excavator to excavate on site, and the strip mine is transported to a crushing station for crushing by a truck and then is transported to a stope outer bin by a belt conveyor. The truck transportation occupation area is big, and concentrated crushing station removes the degree of difficulty greatly, and is consuming time long, and inefficiency, the security is poor, and is serious to environmental pollution, causes the exploitation cost to promote by a wide margin, has still caused the abandonment of residual mineral seam moreover, causes mineral resources to waste.
It has long been desired that the surface mining work surface be capable of eliminating truck transportation as well as the well work surface to achieve continuous mining operation. However, the strip mine face is unlike the borehole face, and there is no fulcrum like the roadway side wall that can move a transport device such as a chain scraper conveyor laterally. In addition, the length of the working surface of the strip mine is longer, and the shortest working surface length also greatly exceeds the transportation distance of the chain type scraper conveyor, so that the adoption of the chain type scraper conveyor is not feasible, and more tail displacement type belt conveyors are used in the strip mine at present.
However, along with the continuous pushing of the mining working face in the mining process of the strip mine, the working face conveying equipment also needs to follow the pushing movement, the movement of the belt conveyor is mostly realized in a skid mode, the transverse movement is realized through the assistance of a bulldozer or other equipment, the belt conveyor cannot be normally moved and arranged under the condition that soft ground or the ground is muddy due to rain and snow, a great amount of manpower, material resources and time are consumed for moving and arranging once, and the moving and arranging efficiency is low.
Disclosure of Invention
In view of the above, the invention provides a mining method suitable for continuous operation of strip mines.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a continuous mining method of an open pit mine by using a drum shearer, wherein the working surface of the open pit mine is a step-type working surface, and the working surface comprises a lower layer first mining surface and an upper layer propelling surface; the mining equipment comprises a drum continuous miner, a transfer belt conveyor, a traversing conveying platform and a moving belt conveyor; wherein, the drum continuous miner is provided with a crawler-type traveling chassis, a bucket, a star wheel self-loading mechanism and a scraper conveying device in a matched manner; the angle of the transfer belt conveyor is adjustable and is carried at the tail end of the crawler-type travelling chassis of the drum-type continuous miner, the feeding end of the transfer belt conveyor is positioned below the discharging end of the scraper conveyor, and the discharging end of the transfer belt conveyor extends above the transverse moving type conveying platform; the transverse moving type conveying platform consists of a transverse moving belt conveyor, a self-adjusting balance mechanism, a crawler traveling mechanism and a positioning control system, wherein the transverse moving belt conveyor is arranged above the crawler traveling mechanism through the self-adjusting balance mechanism, the transverse moving belt conveyor adopts a modularized multi-section splicing structure design, and the positioning control system is used for controlling the coordination consistency of the whole movement of the transverse moving belt conveyor; the movable belt conveyor is a crawler-type movable belt conveyor, the feeding end of the movable belt conveyor is connected with the discharging end of the transverse moving belt conveyor, and the discharging end of the movable belt conveyor extends to the stope outer bin;
the continuous mining method of the strip mine comprises the following steps:
(1) The drum continuous miner arranged on the working face carries out continuous mining operation on the lower layer first mining face and/or the upper layer propelling face;
(2) The materials excavated by the drum continuous miner are transferred to a traversing belt conveyor of a traversing conveying platform through a transferring belt conveyor, and the traversing conveying platform integrally moves and follows along with the pushing of a working surface;
(3) The material is conveyed to the movable belt conveyor through the movable belt conveyor, and the movable belt conveyor can move along with the movable belt conveyor;
(4) And conveying the materials to an outer bin of a stope through a movable belt conveyor, and finally realizing continuous mining operation of the strip mine.
Further, the crawler travelling mechanism adopts a single crawler structure or a double crawler structure, each travelling unit is independently driven, a truss of the transverse moving belt conveyor adopts a modularized design, the crawler travelling mechanism is connected with the truss through a hinge shaft, and the upper carrier roller group and the lower carrier roller group of the transverse moving belt conveyor are both in hanging structures.
Further, a connecting platform for lap joint of the feeding end of the transfer belt conveyor is welded at the tail part of the crawler-type traveling chassis of the drum-type continuous miner, a slewing bearing is fixedly connected above the connecting platform, and the feeding end of the transfer belt conveyor is rotatably connected with the slewing bearing.
Further, the crawler travelling mechanism of the head and the crawler travelling mechanism of the tail of the transverse moving belt conveyor are respectively provided with a GPS differential station and a GPS receiver, the GPS differential station and the GPS receiver form a GPS control center together, each section of middle crawler travelling mechanism is matched with an inertial navigator for measuring the real-time position of the travelling mechanism, and the inertial navigator is in real-time data communication with the GPS control center so as to realize the coordinated control of the overall moving speed and the direction of the transverse moving belt conveyor.
The invention also comprises other components which can be used normally, which are conventional technical means in the field, and in addition, the invention is not limited by the devices or components, such as: self-adjusting balance mechanism, crawler running mechanism, inertial navigator, GPS differential station and GPS receiver, crawler running chassis, bucket and star wheel self-loading mechanism, scraper conveyor, etc. of drum continuous miner all adopt the prior art in this field.
The beneficial effects of the invention are as follows:
the continuous mining method for the strip mine solves the problems of large truck transportation occupied area, large moving difficulty of conveying equipment, long time consumption, low efficiency, poor safety, serious environmental pollution and higher mining cost in the traditional mining process mode. The continuous mining device has the advantages that in the mining process of the strip mine, along with continuous propulsion of a mining working face, the working face conveying equipment synchronously follows the propulsion and the transverse movement, and the conditions of complex hydrogeologic conditions, soft ground or ground muddy ground caused by rain and snow can be dealt with, manpower, material resources and time are saved, the self-movement efficiency is high, the continuous mining operation of the strip mine is realized, and the mining yield and benefit are improved.
Drawings
Fig. 1 is a schematic view of a construction and an arrangement of equipment of a strip mine working face in an embodiment.
Fig. 2 is an enlarged schematic plan view of the portion a in fig. 1.
Fig. 3 is a schematic front view of fig. 2.
Fig. 4 is a schematic view of the drum shearer of fig. 3.
Fig. 5 is a schematic structural diagram of the traversing conveying platform in fig. 3.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Examples
As shown in fig. 1-5, a continuous mining method for a strip mine using a drum shearer, wherein a working surface of the strip mine is a step-type working surface, and the working surface comprises a lower layer first mining surface 1 and an upper layer propelling surface 2; the mining equipment used comprises a drum continuous miner 3, a transfer belt conveyor 4, a traversing conveying platform 5 and a moving belt conveyor 6; wherein, the drum continuous miner is provided with a crawler-type walking chassis 8, a bucket and star wheel self-loading mechanism 9 and a scraper conveying device 10 in a matched manner; the angle of the transfer belt conveyor is adjustable and is carried at the tail end of the crawler-type travelling chassis of the drum-type continuous miner, the feeding end of the transfer belt conveyor is positioned below the discharging end of the scraper conveyor, and the discharging end of the transfer belt conveyor extends above the transverse moving type conveying platform; the transverse moving type conveying platform consists of a transverse moving belt conveyor 11, a self-adjusting balance mechanism 12, a crawler traveling mechanism 13 and a positioning control system 14, wherein the transverse moving belt conveyor is arranged above the crawler traveling mechanism through the self-adjusting balance mechanism, the transverse moving belt conveyor adopts a modularized multi-section splicing structure design, and the positioning control system is used for controlling the coordination consistency of the whole movement of the transverse moving belt conveyor and is arranged on a first mining surface of the lower layer; the movable belt conveyor is a crawler-type movable belt conveyor, the feeding end of the movable belt conveyor is connected with the discharging end of the transverse moving belt conveyor, and the discharging end of the movable belt conveyor extends to the stope outer bin 7;
the continuous mining method of the strip mine comprises the following steps:
(1) The drum continuous miner arranged on the working face carries out continuous mining operation on the lower layer first mining face and/or the upper layer propelling face;
(2) The materials excavated by the drum continuous miner are transferred to a traversing belt conveyor of a traversing conveying platform through a transferring belt conveyor, and the traversing conveying platform integrally moves and follows along with the pushing of a working surface;
(3) The material is conveyed to the movable belt conveyor through the movable belt conveyor, and the movable belt conveyor can move along with the movable belt conveyor;
(4) And conveying the materials to an outer bin of a stope through a movable belt conveyor, and finally realizing continuous mining operation of the strip mine.
The crawler belt travelling mechanism adopts a double-crawler belt structure, each travelling unit is independently driven, the truss of the transverse moving belt conveyor adopts a modularized design, the crawler belt travelling mechanism is connected with the truss through a hinge shaft, and the upper carrier roller group and the lower carrier roller group of the transverse moving belt conveyor are both in hanging structures, so that the transverse moving belt conveyor can adapt to the technological requirements of uneven ground.
The tail part of a crawler-type traveling chassis of the drum-type continuous miner is welded with a connecting platform 15 for overlapping the feeding end of the transfer belt conveyor, a slewing bearing 16 is fixedly connected above the connecting platform, the feeding end of the transfer belt conveyor is rotatably connected with the slewing bearing, and the discharging end of the transfer belt conveyor can be adjusted to be above the traversing belt conveyor in a swinging mode according to the relative position change of the drum-type continuous miner and the traversing conveying platform.
The crawler travelling mechanism of the head and the crawler travelling mechanism of the tail of the transverse moving belt conveyor are respectively provided with a GPS differential station and a GPS receiver, the GPS differential station and the GPS receiver form a GPS control center together, each section of middle crawler travelling mechanism is matched with an inertial navigator for measuring the real-time position of the travelling mechanism, and the inertial navigator is in real-time data communication with the GPS control center so as to realize the coordinated control of the overall moving speed and the direction of the transverse moving belt conveyor.
Because the transverse moving belt conveyor adopts a multi-section splicing structure design, in order to realize the coordination consistency of the integral transverse moving of each section of conveyor module, the crawler running mechanism of the machine head and the crawler running mechanism of the machine tail synchronously and linearly run according to GPS instructions, the running direction of the middle running mechanism is controlled by the direction signal of the GPS control center, the running speed of the middle running mechanism is controlled by the speed signal of the GPS control center, the movement track can be recorded in the whole course by the inertial navigator, and when the machine head and the machine tail reach the designed movement position, the positioning control system starts a one-key deviation correcting function, so that each middle running mechanism automatically returns to the head and tail center connecting line.
The technical solution of the present invention is not limited to the above-described specific embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments, and any technical modifications made within the spirit and principles of the present invention fall within the scope of the present invention.
Claims (1)
1. A continuous mining method of an open pit mine by using a drum shearer, which is characterized in that: the working surface of the strip mine is a step-type working surface, and comprises a lower layer first mining surface and an upper layer propelling surface; the mining equipment comprises a drum continuous miner, a transfer belt conveyor, a traversing conveying platform and a moving belt conveyor; wherein, the drum continuous miner is provided with a crawler-type traveling chassis, a bucket, a star wheel self-loading mechanism and a scraper conveying device in a matched manner; the angle of the transfer belt conveyor is adjustable and is carried at the tail end of the crawler-type travelling chassis of the drum-type continuous miner, the feeding end of the transfer belt conveyor is positioned below the discharging end of the scraper conveyor, and the discharging end of the transfer belt conveyor extends above the transverse moving type conveying platform; the transverse moving type conveying platform consists of a transverse moving belt conveyor, a self-adjusting balance mechanism, a crawler traveling mechanism and a positioning control system, wherein the transverse moving belt conveyor is arranged above the crawler traveling mechanism through the self-adjusting balance mechanism, the transverse moving belt conveyor adopts a modularized multi-section splicing structure design, and the positioning control system is used for controlling the coordination consistency of the whole movement of the transverse moving belt conveyor; the movable belt conveyor is a crawler-type movable belt conveyor, the feeding end of the movable belt conveyor is connected with the discharging end of the transverse moving belt conveyor, and the discharging end of the movable belt conveyor extends to the stope outer bin; the crawler travelling mechanism adopts a single crawler structure or a double crawler structure, each travelling unit is independently driven, a truss of the transverse moving belt conveyor adopts a modularized design, the crawler travelling mechanism is connected with the truss through a hinge shaft, and upper and lower carrier roller groups of the transverse moving belt conveyor adopt hanging structures; a connecting platform for lap joint of the feeding end of the transfer belt conveyor is welded at the tail part of the crawler-type traveling chassis of the drum-type continuous miner, a slewing bearing is fixedly connected above the connecting platform, and the feeding end of the transfer belt conveyor is rotatably connected with the slewing bearing; the crawler travelling mechanism of the head and the crawler travelling mechanism of the tail of the transverse moving belt conveyor are respectively provided with a GPS differential station and a GPS receiver, the GPS differential station and the GPS receiver form a GPS control center together, each section of middle crawler travelling mechanism is provided with an inertial navigator for measuring the real-time position of the travelling mechanism in a matching way, and the inertial navigator is in real-time data communication with the GPS control center so as to realize the coordinated control of the whole moving speed and the direction of the transverse moving belt conveyor;
the continuous mining method of the strip mine comprises the following steps:
(1) The drum continuous miner arranged on the working face carries out continuous mining operation on the lower layer first mining face and/or the upper layer propelling face;
(2) The materials excavated by the drum continuous miner are transferred to a traversing belt conveyor of a traversing conveying platform through a transferring belt conveyor, and the traversing conveying platform integrally moves and follows along with the pushing of a working surface;
(3) The material is conveyed to the movable belt conveyor through the movable belt conveyor, and the movable belt conveyor can move along with the movable belt conveyor;
(4) And conveying the materials to an outer bin of a stope through a movable belt conveyor, and finally realizing continuous mining operation of the strip mine.
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| CN202011244226.8A CN112360465B (en) | 2020-11-09 | 2020-11-09 | Continuous mining method for strip mine by using drum shearer |
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| CN202011244226.8A CN112360465B (en) | 2020-11-09 | 2020-11-09 | Continuous mining method for strip mine by using drum shearer |
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| CN112360465B true CN112360465B (en) | 2023-08-18 |
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| CN113818884B (en) * | 2021-09-25 | 2023-09-22 | 中煤科工集团沈阳设计研究院有限公司 | Strip mine working surface belt type conveying system and sector steering and transferring method |
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