CN115419408B - Pre-buried open-air ore coal layering conveying system - Google Patents

Pre-buried open-air ore coal layering conveying system Download PDF

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Publication number
CN115419408B
CN115419408B CN202211194448.2A CN202211194448A CN115419408B CN 115419408 B CN115419408 B CN 115419408B CN 202211194448 A CN202211194448 A CN 202211194448A CN 115419408 B CN115419408 B CN 115419408B
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lifting
transportation section
layered
section
transportation
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CN115419408A (en
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时旭阳
陈树召
才庆祥
刘福明
武懋
黄建栋
杨猛
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C47/00Machines for obtaining or the removal of materials in open-pit mines
    • E21C47/02Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention relates to a pre-buried open-air mine coal layered conveying system which comprises a lifting conveying section, a layered conveying section and a variable conveying section, wherein the lifting conveying section is communicated with the surface and the pit bottom of an open-air mine, one end of the layered conveying section is communicated with the lifting conveying section, the other end of the layered conveying section is positioned at any position on a layer of conveying road, and the variable conveying section is an extension section of the layered conveying section and is arranged on a conveying road of a corresponding layered. The invention realizes continuous transportation of coal or stripped objects from the pit bottom to the outside of the pit, and reduces the transportation cost; the rubber belt conveyor is arranged in the box-type pipeline to isolate the external environment, so that the influence of severe environmental factors such as winter, rainy season and the like on rubber belt transportation is eliminated; most equipment and facilities do not need to be moved and arranged, when a working surface and an inner row are pushed forward, only a box-type pipeline is needed to be additionally paved, the horizontal transportation section and the pit bottom transportation section are prolonged, after the mining of the whole mine is completed, the lifting transportation section and the layered transportation section are deeply buried in the ground without dismantling, and the equipment and the method can be used for civil air defense engineering or other underground engineering.

Description

Pre-buried open-air ore coal layering conveying system
Technical Field
The invention relates to a transportation system, in particular to a pre-buried open-pit mine coal layered transportation system.
Background
At present, the lifting transportation mode of the strip mine coal or the stripped object mainly comprises two types of truck transportation and rubber belt transportation, and compared with the truck transportation mode, the rubber belt transportation has the advantages of low cost, large capacity and the like and is increasingly widely used. However, the defects of the belt conveyor are continuously revealed, such as that the belt conveyor arranged at the pit bottom and the inner dumping site is required to be continuously moved along with the pushing of the working surface and the dumping site and the steering of the mining site, the moving construction period is long, the cost is high, and the production efficiency is affected. Meanwhile, the belt conveyor is influenced by weather and environmental factors, particularly in winter, when the belt conveyor arranged in an open air state works, materials and the belt are easy to adhere, and the conveying capacity is influenced. In the face of strip mines with larger depth, students propose a scheme for arranging the end slope large-inclination-angle rubber belt conveyor, but due to the large conveying angle, the conveyor capacity is greatly limited, and along with the pushing of a working face, the end slope rubber belt conveyor needs to be frequently moved and arranged, so that the production cost is increased, and under the condition of poor stability of the end slope, safety accidents are easy to occur.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the embedded open-air mine coal layered conveying system, the conveying is not influenced by weather and environment, the rubber belt conveyor does not need to be frequently moved, the safety is high, and the cost is low.
In order to achieve the above purpose, the present invention provides the following technical solutions: a pre-buried open-air mine coal layered transportation system comprises a lifting transportation section, a layered transportation section and a variable transportation section;
the lifting transportation section comprises a lifting hardening substrate, a lifting sealing connecting wall, a lifting box type pipeline and a lifting adhesive tape conveyor; lifting the hardening substrate to communicate the surface of the strip mine and the pit bottom, wherein serrated lifting sealing connecting walls are arranged on two sides of the lifting hardening substrate, lifting box-type pipelines are lifted and arranged above the lifting hardening substrate, the bottom ends of the lifting box-type pipelines are serrated and meshed with the lifting sealing connecting walls, and a lifting adhesive tape conveyor is arranged in the lifting box-type pipelines;
the layered transportation section has the same structure as the lifting transportation section, and comprises a horizontal hardening substrate, a horizontal sealing connecting wall, a horizontal box type pipeline and a horizontal adhesive tape conveyor; one end of the layered transportation section is communicated with the lifting transportation section, the other end of the layered transportation section is positioned at any position on the layered transportation road, the layered transportation section is horizontal or nearly horizontal as a whole, and a horizontal rubber belt conveyor is arranged in a horizontal box-type pipeline;
the variable transportation section comprises a hardening substrate, a sealing connecting wall and an adhesive tape conveyor, wherein the hardening substrate of the variable transportation section is an extension section of the horizontal hardening substrate of the layered transportation section, the serrated sealing connecting wall is arranged on the hardening substrate of the variable transportation section, the adhesive tape conveyor of the variable transportation section is an extension section of the horizontal adhesive tape conveyor of the layered transportation section, the variable transportation section is arranged on a transportation road of corresponding layers, and the adhesive tape conveyor of the variable transportation section is arranged in a box-type pipeline of the variable transportation section.
Further, the lifting hardening substrate is composed of a slope road and a concrete layer, and the concrete layer is arranged on the slope road.
Further, a fixed ground fort is arranged at the connection position of the lifting transportation section and the layered transportation section.
Further, a ventilation system, a sprinkling system and a drainage ditch are arranged in the lifting transportation section and the layered transportation section.
Further, the layered transportation section comprises two layers, the layered transportation section of the lower layer is arranged on the highwall, and the layered transportation section of the upper layer is arranged on the intermediate bridge.
Further, a fireproof waterproof interlayer is arranged at the joint of the lifting box type pipeline and the lifting sealing connecting wall.
Furthermore, rib plates are additionally arranged on two outer side surfaces of the lifting box type pipeline.
Further, with continuous mining of the strip mine, when the strip is discharged to the variable transportation section, the box type pipeline is hoisted and arranged on the hardened substrate of the variable transportation section.
Compared with the prior art, the invention realizes continuous transportation of coal or stripped objects from the pit bottom to the outside of the pit, and reduces the transportation cost; the rubber belt conveyor is arranged in the box-type pipeline to isolate the external environment, so that the influence of severe environmental factors such as winter, rainy season and the like on rubber belt transportation is eliminated; the invention is arranged in the non-working side of the strip mine or the existing mining area production system, no additional construction is needed, the influence on the original system of the mining area is small, and the functions of the original system can be widened; most equipment and facilities do not need to be moved, and when a working surface and an inner row are pushed forward, only a box-type pipeline is required to be additionally paved, and a horizontal conveying section and a pit bottom conveying section are prolonged; according to the invention, multi-layer layering can be realized according to the situation, the system arrangement is more flexible, and the system is suitable for different environments; the construction technology is mature, the cost is controllable, and after the whole mine exploitation is finished, the lifting transportation section and the layered transportation section are deeply buried underground without dismantling, so that the construction technology can be used as a civil air defense tunnel for civil air defense engineering or underground engineering for other purposes.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the connection relationship between the belt conveyors of the present invention;
FIG. 3 is a cross-sectional view of the lifting transport section of the present invention;
FIG. 4 is a side view of the lifting transport section of the present invention;
in the figure: 1. lifting a transportation section, 2, layering transportation section, 3-1, a highwall, 3-2, an intermediate bridge, 4, lifting a hardening substrate, 5, lifting a sealing connecting wall, 6, lifting a box-type pipeline, 7, fixing a ground fort, 8, lifting a rubber belt conveyor, 9, a strip mine non-working upper, 10, a strip mine ground surface, 11, a pit bottom, 12, a slope road, 13, a concrete layer, 14, a rib plate, 15, a horizontal rubber belt conveyor, 16, a crushing station, 17, an end upper, 18, an intermediate bridge, 19 and a strip mine ground production system.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention provides a pre-buried open-pit coal layered transportation system, which comprises a lifting transportation section 1, a layered transportation section 2 and a variable transportation section.
The lifting transportation section 1 comprises a lifting hardened substrate 4, a lifting sealing connecting wall 5, a lifting box type pipeline 6 and a lifting adhesive tape conveyor 8; the lifting hardening substrate 4 is built along the strip mine non-working side 9 and is communicated with the surface 10 and the pit bottom 11 of the strip mine, as shown in fig. 4, the lifting hardening substrate 4 is composed of a slope road 12 and a concrete layer 13, the slope road 12 is repeatedly rolled by mining equipment to ensure compactness, a series of concave-convex anti-slip grooves which are distributed perpendicularly to the extending direction of the road are formed on the surface of the slope road 12 in a device drag hook mode, the purpose is to increase the anti-slip coefficient of the surface of the slope road 12, and the concrete 13 is paved on the upper surface of the slope road 12 to form the inclined lifting hardening substrate 4. When the strip mine non-working side 9 is a coal seam floor, a slope road 12 is directly formed after the coal seam floor is trimmed; when the strip mine non-working side 9 is a waste strip mine internal dumping site, the dumping steps are broken, and the dumping steps are combined by digging and filling, so that a slope road 12 with uniform gradient is formed. If the overall slope angle of the coal seam bottom plate or the dumping site is larger than 14 degrees, a slope road is built in a pseudo-slope mode, so that the slope is reduced to be between 10 and 14 degrees.
As shown in fig. 3 and 4, saw-tooth lifting sealing connecting walls 5 are arranged on two sides of the lifting hardening substrate 4, and the lifting sealing connecting walls 5 are used for casting concrete walls at intervals on two sides of the lifting hardening substrate 4 in the construction process of the lifting hardening substrate 4, wherein the thickness of the walls is 30-50cm, the height of the walls is 50cm, the length of each section is 1-2m, and the interval distance is 1-2m; lifting a lifting box type pipeline 6 above a lifting hardening substrate 4, wherein the bottom end of the lifting box type pipeline 6 is serrated and meshed with a lifting sealing connecting wall 5, the lifting box type pipeline 6 is prefabricated and formed by concrete, the section of the pipeline is a hollow rectangle with an opening at the bottom, the wall thickness is the same as that of the lifting sealing connecting wall 5, and chamfers are arranged on the inner surface and the outer surface of the bending part of the pipeline wall, so that the mechanical property of the pipeline is improved; the pipeline wall at the bottom opening position of the lifting box type pipeline 6 is arranged in a zigzag shape with protruding intervals and is matched and attached with the lifting sealing connecting wall 5, a waterproof fireproof interlayer is arranged at the attaching and connecting position, the built lifting box type pipeline 6 and the lifting hardening substrate 4 can form a firm and unified whole, and fireproof and waterproof effects are realized. Rib plates 14 are additionally arranged on two outer side surfaces of the lifting box type pipeline 6, so that the supporting strength is improved. Inside the lifting box type pipeline 6, a lifting rubber belt conveyor 8 is arranged on the lifting hardening substrate 4 and penetrates through the surface 10 and the pit bottom 11 of the strip mine, and one end of the lifting rubber belt conveyor 8, which is positioned on the surface 10 of the strip mine, is connected with a surface production system 19 of the strip mine. In order to exert the maximum function, a plurality of lifting belt conveyors can be arranged in parallel and are responsible for simultaneously conveying different materials or used as standby systems of each other.
The layered transportation section 2 comprises a horizontal hardening substrate, a horizontal sealing connecting wall, a horizontal box type pipeline and a horizontal adhesive tape conveyor 15, and the structure, the construction process and the construction flow of the layered transportation section 2 and the lifting transportation section 1 are the same; one end of the layered transportation section 2 is communicated with the lifting transportation section 1, the other end of the layered transportation section 2 is located at any position on the transportation road, the layered transportation section 2 is horizontal or nearly horizontal, and the horizontal rubber belt conveyor 15 is arranged in a horizontal box-type pipeline.
The variable transportation section comprises a hardening substrate, a sealing connecting wall and an adhesive tape conveyor, wherein the hardening substrate of the variable transportation section is an extension section of the horizontal hardening substrate of the layered transportation section 2, the serrated sealing connecting wall is arranged on the hardening substrate of the variable transportation section, the adhesive tape conveyor of the variable transportation section is an extension section of the horizontal adhesive tape conveyor 15 of the layered transportation section 2, the variable transportation section is arranged on a transportation road of corresponding layers, and the adhesive tape conveyor of the variable transportation section is arranged in a box-type pipeline of the variable transportation section. Along with continuous exploitation of the strip mine, when the strip mine is internally discharged to the variable transportation section, a box type pipeline is hoisted and arranged on a hardening substrate of the variable transportation section. The variable transportation section and the layered transportation section 2 and the lifting transportation section 1 have the same structure, construction process and construction flow. The variable transport section is arranged on the road inside the pit, the end of which is located at the crushing station 16 installed inside the pit, and the pit bottom transport section has the characteristic of flexible arrangement.
The layered transportation section 2 comprises two layers, the layered transportation section 2 of the lower layer is arranged on the highwall 3-1, and the layered transportation section 2 of the upper layer is arranged on the intermediate bridge 3-2; the variable transportation section on the highwall 3-1 is arranged at a position close to one side of the highwall 17 with the coal seam floor, and in the southern area with rich rainwater, in order to avoid the influence of drainage on the rubber belt conveyor, the rubber belt conveyor can be arranged on a first or a second highwall step above the coal seam floor; the variable transportation sections on the intermediate bridge 3-2 are arranged on the intermediate bridge, so that the multiple functions of the intermediate bridge are fully exerted, and the two-layer layered transportation sections 2 can transport different materials at the same time or serve as a standby system of each other, and are responsible for production and transportation tasks during equipment overhaul and movement. Similarly, more layered transportation sections 2 can be arranged according to the field conditions and the field actual demands of the strip mine.
The layered transportation section 2 and the lifting transportation section 1 are of tunnel type semi-closed structures, and necessary equipment such as a ventilation system, a sprinkling dust fall system, a circuit box, a drainage ditch and the like are arranged in the layered transportation section and the lifting transportation section. As shown in fig. 1 and 2, the layered transport section 2 is provided with a fixed ground ladle 7 at a position where the layered transport section 1 is connected, the fixed ground ladle 7 being larger in size with respect to the lifting box type pipe 6 so that a transfer conveyor is provided in the fixed ground ladle 7, and the horizontal adhesive tape conveyor 15 is communicated with the lifting adhesive tape conveyor 8 through the transfer conveyor; after being crushed from the crushing station 16, the materials are transported to the strip mine ground production system 19 by the belt conveyor with variable transport section, namely the horizontal belt conveyor 15, through the transfer conveyor and then by the lifting belt conveyor 8.
After the strip mine starts to be internally discharged or when the strip mine continues to be internally discharged, the stripping material can be directly covered on the box-type pipeline, and attention should be paid to the fact that the two sides of the box-type pipeline are subjected to bulldozing and burying at the same time during covering, and transverse displacement is generated after the strip material is placed; along with the propulsion of the coal face, the variable transportation section also continuously extends towards the propulsion direction, meanwhile, along with the propulsion of the inner row, when the inner row reaches the variable transportation section, a box-type pipeline is hoisted and arranged on a hardening substrate of the variable transportation section, and the variable transportation section after hoisting the box-type pipeline is changed into a layered transportation section 2.
The rubber belt conveyor is arranged in the box-type pipeline to isolate the external environment, so that the influence of severe environmental factors such as winter, rainy season and the like on rubber belt transportation is eliminated; the system is arranged in the strip mine non-working side 9 or the existing mining area production system, no additional construction is needed, the influence on the original system of the mining area is small, and the functions of the original system can be widened; most of the system does not need to be moved and arranged, and when the working surface and the inner row are pushed forward, only a box-type pipeline is required to be additionally paved, and the horizontal conveying section and the variable conveying section are prolonged. The multi-layer layering can be realized, the system arrangement is more flexible, and the system is suitable for different environments. After the mining of the whole mine is completed, the lifting transportation section 1 and the layered transportation section 2 are deeply buried underground, and necessary equipment such as a ventilation system, a sprinkling dust fall system, a circuit box, a drainage ditch and the like are not required to be removed, so that the mining device can be used as a civil air defense tunnel for civil air defense engineering or underground engineering for other purposes.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention, but any minor modifications, equivalents, and improvements made to the above embodiments according to the technical principles of the present invention should be included in the scope of the technical solutions of the present invention.

Claims (8)

1. A pre-buried open-air ore coal layering conveying system which is characterized in that: comprises a lifting transportation section (1), a layering transportation section (2) and a variable transportation section;
the lifting transportation section (1) comprises a lifting hardening substrate (4), a lifting sealing connecting wall (5), a lifting box type pipeline (6) and a lifting adhesive tape conveyor (8); lifting a hardening substrate (4) to be communicated with the surface (10) and the pit bottom (11) of the strip mine, wherein saw-toothed lifting sealing connecting walls (5) are arranged on two sides of the lifting hardening substrate (4), lifting box-type pipelines (6) are lifted and arranged above the lifting hardening substrate (4), the bottom ends of the lifting box-type pipelines (6) are saw-toothed and meshed with the lifting sealing connecting walls (5), and lifting adhesive tape conveyors (8) are arranged in the lifting box-type pipelines (6);
the layered transportation section (2) has the same structure as the lifting transportation section (1), and the layered transportation section (2) comprises a horizontal hardening substrate, a horizontal sealing connecting wall, a horizontal box type pipeline and a horizontal adhesive tape conveyor (15); one end of the layered transportation section (2) is communicated with the lifting transportation section (1), the other end of the layered transportation section (2) is positioned at any position on the layer of transportation road, the layered transportation section (2) is horizontal or nearly horizontal, and a horizontal adhesive tape conveyor (15) is arranged in a horizontal box-type pipeline;
the variable transportation section comprises a hardening substrate, a sealing connecting wall and an adhesive tape conveyor, wherein the hardening substrate of the variable transportation section is an extension section of the horizontal hardening substrate of the layered transportation section (2), the serrated sealing connecting wall is arranged on the hardening substrate of the variable transportation section, the adhesive tape conveyor of the variable transportation section is an extension section of the horizontal adhesive tape conveyor (15) of the layered transportation section (2), the variable transportation section is arranged on a transportation road of corresponding layers, and the adhesive tape conveyor of the variable transportation section is arranged in a box-type pipeline of the variable transportation section.
2. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: the lifting hardening substrate (4) consists of a slope road (12) and a concrete layer (13), wherein the concrete layer (13) is arranged on the slope road (12).
3. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: the position where the lifting transportation section (1) is connected with the layered transportation section (2) is provided with a fixed ground fort (7).
4. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: and a ventilation system, a watering system and a drainage ditch are arranged in the lifting transportation section (1) and the layered transportation section (2).
5. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: the layered transportation section (2) comprises two layers, the layered transportation section (2) of the lower layer is arranged on the side wall (3-1), and the layered transportation section (2) of the upper layer is arranged on the intermediate bridge (3-2).
6. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: the joint of the lifting box type pipeline (6) and the lifting sealing connecting wall (5) is provided with a fireproof waterproof interlayer.
7. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: rib plates (14) are additionally arranged on two outer side surfaces of the lifting box type pipeline (6).
8. The pre-buried open-pit coal char layered transportation system according to claim 1, wherein: along with continuous exploitation of the strip mine, when the strip mine is internally discharged to the variable transportation section, a box type pipeline is hoisted and arranged on a hardening substrate of the variable transportation section.
CN202211194448.2A 2022-09-29 2022-09-29 Pre-buried open-air ore coal layering conveying system Active CN115419408B (en)

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Publication number Priority date Publication date Assignee Title
CN116498326B (en) * 2023-05-10 2023-10-31 中国矿业大学 Collaborative mining method for end slope compression of open pit coal mine in cold region

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