CN110984993B - Mining process for realizing non-transportation dumping of strip mine and scraper type dumping machine - Google Patents
Mining process for realizing non-transportation dumping of strip mine and scraper type dumping machine Download PDFInfo
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- CN110984993B CN110984993B CN201911275474.6A CN201911275474A CN110984993B CN 110984993 B CN110984993 B CN 110984993B CN 201911275474 A CN201911275474 A CN 201911275474A CN 110984993 B CN110984993 B CN 110984993B
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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
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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
- E21C41/32—Reclamation of surface-mined areas
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- 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
Abstract
The invention provides a mining process for realizing non-transportation dumping of strip mines and a scraper type dumping machine, wherein the mining process comprises the following steps: carrying out throwing blasting on a rock stratum to be mined to obtain a rock free surface, and flattening the rock free surface; excavating the free surface of the rock to form a horizontal groove, and pushing the bottom surface of the horizontal groove to be flat, wherein one end of the horizontal groove points to the inner soil discharge field; a scraper is arranged in the horizontal groove, and the length of the conveying surface of the scraper is greater than the width of the free surface of the rock; the surface of a conveying surface of the scraper conveyor is provided with a flexible bottom plate, two sides of the conveying surface are provided with material blocking plates, and the width of a gap between each material blocking plate and the corresponding side surface of the horizontal groove is smaller than a set width; the materials to be discharged on the free surface of the rock are pushed to a bottom plate in a horizontal groove and are conveyed to an inner soil discharge field by a conveying surface of a scraper conveyor. The invention reduces the equipment cost of the non-transportation dumping mining process of the strip mine and the transportation distance of the coal transportation system, and improves the operation efficiency of the coal mining engineering of the strip mine.
Description
Technical Field
The invention relates to the technical field of coal mining processes and mining equipment, in particular to a mining process for realizing transportation-free dumping of strip mines and a scraper type dumping machine.
Background
The mining process commonly adopted by open-pit mines at home and abroad mainly comprises a wheel bucket continuous mining process, a single bucket-truck intermittent mining process, a single bucket-truck + semi-movable crushing station-belt conveyor semi-continuous mining process, a single bucket-truck + self-moving crusher-belt conveyor semi-continuous mining process and a throwing blasting + pulling bucket and shoveling pile integrated mining process. Above mining technology or have higher cost of transportation, or have lower exploitation efficiency, on this basis, the throwing blasting + dragline dumps and does not have the transportation technology and has very big advantage, is to throw the blasting back to the material, and dragline directly moves the loose thing to the dump and abandons, and the dump is equipped with the bull-dozer and carries out the auxiliary operation, and it can realize not having the transportation dumping and can incessant exploitation to can reduce the cost of transportation and improve exploitation efficiency simultaneously.
However, a significant problem with this type of process is that: the main equipment in the process is an imported equipment, the cost for purchasing the equipment is extremely high, and meanwhile, the later-period maintenance and repair also has large manpower and material resource consumption.
Disclosure of Invention
The embodiment of the invention aims to provide a mining process for realizing non-transportation dumping of strip mines and a scraper type dumping machine, and aims to solve the technical problems of low mining efficiency and high cost of the strip mines in the prior art.
Therefore, the invention provides a mining process for realizing non-transportation dumping of strip mines, which comprises the following steps:
carrying out throwing blasting on a rock stratum to be mined to obtain a rock free surface, and flattening the rock free surface;
excavating the free surface of the rock to form a horizontal groove, and pushing the bottom surface of the horizontal groove flat, wherein one end of the horizontal groove points to an inner soil discharge field;
a scraper is arranged in the horizontal groove, and the length of the conveying surface of the scraper is greater than the width of the free surface of the rock;
arranging a flexible bottom plate on the surface of a conveying surface of the scraper conveyor, installing material blocking plates on two sides of the conveying surface, wherein the width of a gap between each material blocking plate and the corresponding side surface of the horizontal groove is smaller than a set width;
and pushing the materials to be discharged on the free surface of the rock to the bottom plate in the horizontal groove, and transporting the materials to be discharged to the inner soil discharge field by the conveying surface of the scraper conveyor.
Optionally, in the above mining process for realizing non-transportation and dumping of the strip mine, a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are installed on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than the set width:
the striker plate includes the polylith baffle, each the tip of baffle is provided with connecting portion, and is different the baffle passes through connecting portion form after end to end the striker plate.
Optionally, in the above mining process for realizing non-transportation and dumping of the strip mine, a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are installed on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than the set width:
each striker plate is attached to the corresponding lateral surface of the horizontal groove.
Optionally, in the above mining process for realizing non-transportation and dumping of the strip mine, a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are installed on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than the set width:
the outer end face of each material baffle and the highest position of the corresponding horizontal groove side face are located on the same horizontal plane.
Optionally, in the above mining process for realizing transportation-free dumping of a strip mine, the material to be dumped on the free rock surface is pushed onto the bottom plate in the horizontal trough, and is transported to the inner dumping field by the conveying surface of the scraper conveyor:
and pushing the material to be discharged on the free surface of the rock into the horizontal groove by a bulldozer.
Optionally, in the mining process for realizing transportation-free dumping of the strip mine, a scraper is arranged in the horizontal trough, and the length of the conveying surface of the scraper is greater than the width of the free rock surface:
and if the length of the single conveying surface of the single scraper machine is smaller than the width of the free rock surface, splicing by adopting a plurality of scraper machines so that the length of the conveying surface after all the single conveying surfaces are connected is larger than the width of the free rock surface.
Optionally, in the mining process for realizing non-transportation and non-dumping of the strip mine, the bottom plate and the striker plate are made of wear-resistant materials.
Optionally, in the above mining process for realizing non-transportation and dumping of the strip mine, the free surface of the rock is excavated to form a horizontal groove, and the bottom surface of the horizontal groove is pushed to be flat, and one end of the horizontal groove points to the inner dumping field:
taking the center line of the free surface of the rock as a reference, and excavating two horizontal grooves on two sides of the center line; the distance between two of said lying slots is greater than the minimum distance required for bulldozer steering scheduling.
Optionally, in the above mining process for realizing non-transportation and dumping of the strip mine, the free surface of the rock is excavated to form a horizontal groove, and the bottom surface of the horizontal groove is pushed to be flat, and one end of the horizontal groove points to the inner dumping field:
and the bulldozer pushes the materials to be discharged into the two horizontal grooves at intervals so as to reduce the free surface of the rock.
The present invention also provides a scraper type dumping machine, comprising: scrape the trigger and set up in scrape flexible bottom plate on the trigger transport face and set up in the striker plate of transport face both sides, flexible bottom plate with the striker plate adopts wear-resisting material preparation to obtain.
Compared with the prior art, the technical scheme provided by the invention at least has the following beneficial effects:
the invention provides a mining process for realizing non-transportation dumping of strip mines and a scraper type dumping machine, wherein the mining process comprises the following steps: carrying out throwing blasting on a rock stratum to be mined to obtain a rock free surface, and flattening the rock free surface; excavating the free surface of the rock to form a horizontal groove, and pushing the bottom surface of the horizontal groove flat, wherein one end of the horizontal groove points to an inner soil discharge field; a scraper is arranged in the horizontal groove, and the length of the conveying surface of the scraper is greater than the width of the free surface of the rock; arranging a flexible bottom plate on the surface of a conveying surface of the scraper conveyor, installing material blocking plates on two sides of the conveying surface, wherein the width of a gap between each material blocking plate and the corresponding side surface of the horizontal groove is smaller than a set width; and pushing the materials to be discharged on the free surface of the rock to the bottom plate in the horizontal groove, and transporting the materials to be discharged to the inner soil discharge field by the conveying surface of the scraper conveyor. By the technical scheme, the equipment cost of the open-pit mine non-transportation dumping mining process is reduced, the arrangement of the transportation roads of the lower coal mining engineering is simplified, the transportation distance of a coal transportation system is favorably reduced, the operation efficiency of the open-pit mine coal mining engineering is improved, and the long-term stripping transportation cost of the open-pit mine is further reduced.
Drawings
FIG. 1 is a schematic illustration of the steps involved in implementing a process for the mining of a strip mine without transport dumping in accordance with an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a flat layout of a scraper-type dumping loader according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of a scraper blade type earth ejector according to an embodiment of the present invention;
FIG. 4 is a schematic longitudinal cross-sectional view of a scraper blade type earth mover according to an embodiment of the present invention in operation;
fig. 5 is a cross-sectional view of a scraper blade type earth mover in operation according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the schemes in the following embodiments of the present invention may be combined according to actual needs as long as they do not conflict with each other.
Example 1
The embodiment provides a mining process for realizing non-transportation dumping of strip mines, which is used for realizing the mining process for realizing the non-transportation dumping of the strip mines, and mainly comprises the following steps: a throwing blasting-bulldozer + scraper type dumping machine semi-continuous stripping mining process, particularly, referring to fig. 1 in combination with the contents shown in fig. 2-5, the mining process comprises the following steps:
the method comprises the following steps: and carrying out throwing blasting on the rock stratum to be mined to obtain a rock free surface, and flattening the rock free surface. For horizontal operation above the coal seam roof, as shown in fig. 2, before the throwing blasting, the height of the step of the throwing blasting needs to be determined, and the height is determined according to the throwing blasting technology, so as to perform layered depth reduction operation. The throwing blasting technology is a blasting technology for throwing rocks away from the original place according to engineering requirements. The common directional throwing blasting includes single-sided, double-sided, upward, multidirectional throwing, reinforced throwing, one-sided throwing and other-side loosening blasting. The throwing blasting can throw a large amount of stone to a project required place, is favorable for accelerating the project progress and shortening the construction period, and the throwing blasting technology is widely applied to projects of rock stripping, ore transporting, dam building, road repairing, land leveling and the like in the departments of mining, water conservancy, hydropower, railway traffic, farmland water conservancy and the like in China. And after the throwing blasting is finished, leveling the blasted free rock surface by a bulldozer.
Step two: digging the free surface of the rock to form a horizontal groove and flattening the bottom surface of the horizontal groove, wherein one end of the horizontal groove points to the inner soil discharge field. Referring to fig. 3 and 4, in the process of excavating the horizontal groove of the dumping plough, the depth of the horizontal groove needs to be determined, and in actual implementation, the depth of the horizontal groove of the dumping plough, namely the height of the step of the layered operation of the process, can be comprehensively determined by combining the operation parameters of the bulldozer, the height of the step of the throwing blasting and other related parameters. Also can direct directional interior waste dump of groove that crouches, if built-in waste dumping device can run through the groove that crouches, then built-in waste dumping equipment can be directly with treating that row's material is carried to interior waste dump, and need not additionally increase transportation equipment.
Step three: and a scraper is arranged in the horizontal groove, and the length of the conveying surface of the scraper is greater than the width of the free surface of the rock.
Step four: the scraper conveyor is characterized in that a flexible bottom plate is arranged on the surface of a conveying face of the scraper conveyor, striker plates are installed on two sides of the conveying face, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than a set width. Referring to fig. 3, the scraper conveyor 5 itself has a head 2 and a tail 3, a driving part 1 is provided at the head, a flexible bottom plate 7 is provided on the surface of the conveying surface of the scraper conveyor 5 so that the flexible bottom plate 7 can move along with the movement of the scraper conveyor chain 4, and striker plates 6 are provided on both sides of the conveying surface of the scraper conveyor 5.
Step five: and pushing the materials to be discharged on the free surface of the rock to the bottom plate in the horizontal groove, and transporting the materials to be discharged to the inner soil discharge field by the conveying surface of the scraper conveyor.
As shown in fig. 2, the scraper is provided with a striker plate and a flexible bottom plate, which is equivalent to a scraper type dumping device, and the width of the scraper can be larger than that of the free surface of the rock, so that the scraper can directly extend to the position pointing to the inner dumping ground. The materials to be discharged can be directly discharged to the inner soil discharge field through the scraper type soil discharge machine.
By the technical scheme, the equipment cost of the open-pit mine non-transportation dumping mining process is reduced, the arrangement of transportation roads of the coal mining engineering is simplified, the transportation distance of a coal transportation system is favorably reduced, the operation efficiency of the open-pit mine coal mining engineering is improved, and the long-term stripping transportation cost of the open-pit mine is further reduced.
Preferably, in the above scheme, striker plate 6 can include the polylith baffle, each the tip of baffle is provided with connecting portion, and is different the baffle passes through connecting portion form after the end to end connection striker plate 6. That is, the striker plate 6 itself can be made in a modular structure, and accordingly, if the length of the single conveying surface of a single scraper 5 is smaller than the width of the rock free surface, a plurality of scrapers are used for splicing so that the length of the conveying surface after all the single conveying surfaces are connected is larger than the width of the rock free surface. In order to satisfy the length needs of conveying face, can set up many scraper blade machines side by side, can splice striker plate 6 simultaneously, adopt the very big applicable scope of scraper blade type dumping machine of having widened of this kind of mode, if the rock free surface is narrower then adopt less scraper blade machine and striker plate to realize, if the rock free surface is broad, then use more scraper blade machine and striker plate to realize. The effects of convenient assembly, moving and extension of the whole scraper type dumping plough are realized through the modular design.
Further, in the mining process for realizing the transportation-free dumping of the strip mine, each striker plate 6 is attached to the corresponding lateral surface of the horizontal groove. Because the material to be discharged is pushed downwards by the bulldozer from the free surface of the rock, in order to reduce the wedging frequency of the equipment, particularly at the clearance between the receiving plate and the material retaining groove and the material returning position of the bottom groove, the material blocking plate 6 and the side surface of the horizontal groove have better fit, so that the material to be discharged pushed from the upper part falls into the material blocking plate as far as possible. For this reason, it is further preferable that the outer end surface of each striker plate 6 and the highest position of the corresponding horizontal groove side surface are located on the same horizontal plane. Therefore, when the bulldozer pushes the materials to be discharged, the materials to be discharged can fall into the horizontal groove as far as possible as long as the materials to be discharged are pushed to the opening of the horizontal groove.
In addition, in the above scheme, the striker plate 6 and the flexible bottom plate 7 should carry out material selection to the hardness, the smoothness etc. of waiting to arrange the material, and the striker plate 6 and the flexible bottom plate 7 of long-term transportation rock wear seriously, and life can shorten greatly, so the striker plate 6 and the flexible bottom plate 7 should select wear-resisting material for use. The wear-resistant material can be selected from wear-resistant steel plates, wear-resistant ceramics, wear-resistant rubber, wear-resistant pipelines, wear-resistant welding materials, wear-resistant castings, cast stones, polymers and other wear-resistant materials. Besides the high-molecular wear-resistant material, the other materials are rigid wear-resistant materials, so that the flexible bottom plate 7 can be prepared by selecting the high-molecular wear-resistant material.
Preferably, as shown in fig. 4 and 5, in the above scheme, the horizontal groove excavated after each blasting is divided into two horizontal grooves a and two horizontal grooves B, wherein the horizontal grooves a and the horizontal grooves B are symmetrically arranged on two sides of a center line of the rock free surface; the distance between the two horizontal grooves is larger than the minimum distance required by the bulldozer steering scheduling, so that the bulldozer can conveniently steer and move between the two horizontal grooves. When in actual dumping, the bulldozer pushes the material to be dumped into the two horizontal grooves at intervals, so that the scraper type dumping machine completes the moving and depth-reducing processes. Namely, after the position A is deepened once, the scraper type dumping machine is moved to the position B, the two stations are alternately moved, and the scraper type dumping machine is lengthened along with the step layered deepening and the widening of the dumping step, so that materials are dumped to a farther position of the inner dumping field.
In the mining process for realizing the transportation-free dumping of the strip mine provided by the embodiment of the invention, the arrangement and the movement of the scraper type dumping machine on the working face are realized in the following modes: the method comprises the steps of horizontally operating above a coal seam roof, carrying out layered depth reduction operation according to the step height determined by a throwing blasting technology, flattening the free surface of blasted rocks by a bulldozer, and excavating a dumping machine horizontal groove project in advance, wherein the depth of a dumping machine horizontal groove, namely the step height of the layered operation of the process, is comprehensively determined by combining the operation parameters of the bulldozer, the height of the steps of the throwing blasting and the like. The scraper type dumping machine receives materials and pushes the materials through two sides of the equipment by the bulldozer, the materials are directly discharged to a goaf through the dumping machine, and finally, the transportation and dumping are realized. The dumping step needs to be assisted by a bulldozer, namely, the dumping platform is processed, so that the scraper type dumping machine can be lengthened at any time along with the change of the dumping width. The width of the mining belt of the scraper type dumping device in the working face operation is consistent with the width of the mining belt of the throwing blasting, and the width is the initial device length of the dumping device. The length of the working line of the layered soil pushing area of the scraper type dumping plough is determined by calculation according to the propelling speed of the bulldozer, the capability of the dumping plough and the coal mining pushing progress, when the scraper type dumping plough is deepened in a layered mode, at least two soil pushing areas with the same length of the working line are required to be alternately moved, and for a long strip mine with the working line, multiple systems can be arranged through the working line, so that the working efficiency is improved.
The above process flow of the present embodiment is represented as follows: the method comprises the steps of throwing blasting, digging a horizontal groove project by a bulldozer, pushing materials to a scraper type dumping machine by the bulldozer, realizing material transportation and dumping by the scraper type dumping machine, moving the scraper type dumping machine to the next soil pushing area, and alternately moving two soil pushing areas to finish layered depth reduction. The material receiving part of the scraper type dumping plough is required to select materials according to the hardness, the smoothness and the like of transported materials, the material receiving plate and the material stopping groove which transport rocks for a long time are seriously abraded, the service life is greatly shortened, and therefore the material receiving plate and the material stopping groove are required to be made of wear-resistant materials. Secondly, the scraper type dumping device is modularized and assembled, so that assembly, moving and lengthening are facilitated, and when the bulldozer pushes materials from two sides of the equipment, the frequency of equipment wedging is reduced, particularly at the gap between a material receiving plate and a material retaining groove and the material returning position of a bottom groove.
Compared with an imported dragline, the scraper type dumping machine in the technical scheme reduces the equipment investment of a non-transportation dumping mining process of the strip mine, simplifies the arrangement of transportation roads of a coal mining project, is beneficial to reducing the transportation distance of a coal transportation system, improves the operation efficiency of the strip mine coal mining project, and further effectively reduces the long-term stripping transportation cost of the strip mine. In addition, the process has small operation space of a single device, can realize the arrangement of a plurality of sets on a working face, can ensure the system capacity and efficiency, and has relatively small restriction on the propulsion degree of a lower coal seam compared with a dragline dumping process.
Example 2
The present embodiment provides a scraper type dumping machine, as shown in fig. 3, including: scrape trigger 5 and set up in scrape flexible bottom plate 7 on 5 transport faces of trigger and set up in the striker plate 6 of transport face both sides, flexible bottom plate 7 with striker plate 6 adopts wear-resisting material preparation to obtain. The scraper conveyor 5 is provided with a head 2 and a tail 3, a driving part 1 is arranged at the head, a flexible bottom plate 7 is arranged on the surface of the conveying surface of the scraper conveyor 5, the flexible bottom plate 7 can move along with the movement of a scraper chain 4, and baffle plates 6 are arranged on two sides of the conveying surface of the scraper conveyor 5.
Above both sides striker plate 6, flexible bottom plate 7 design are the modularization, leave in tail 3 department and establish the device that can conveniently assemble and dismantle. The scraper type dumping plough and the throwing blasting process are applied in a combined mode, the scraper type dumping plough and the throwing blasting process are located on the level of a step above a coal seam roof, the length of initial equipment of the scraper type dumping plough is consistent with the width of a digging belt, the scraper type dumping plough is arranged perpendicular to a working face, the scraper type dumping plough needs to be placed in a horizontal groove of a bulldozer in a layered depth reduction mode, the depth of the horizontal groove is related to the operation parameters of the bulldozer and the size of the equipment, and the schematic diagrams of the horizontal section and the section are shown in the figures 2, 4 and 5 when the throwing blasting-bulldozer and the scraper type dumping plough are in semi-continuous stripping mining process operation. When the position A is moved to the position B after once depth reduction is finished, the two stations are alternately moved, and the scraper type dumping machine is lengthened along with the step layered depth reduction and the widening of the dumping step, so that the materials are dumped to a farther position of the inner dumping field. The material selection of the scraper conveyor should be combined with the factors such as the hardness and the smoothness of the conveyed materials and the natural conditions of the application area.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A mining process for realizing non-transportation dumping of strip mines is characterized by comprising the following steps of:
carrying out throwing blasting on a rock stratum to be mined to obtain a rock free surface, and flattening the rock free surface;
excavating the free surface of the rock to form a horizontal groove, and pushing the bottom surface of the horizontal groove flat, wherein one end of the horizontal groove points to an inner soil discharge field;
a scraper is arranged in the horizontal groove, and the length of the conveying surface of the scraper is greater than the width of the free surface of the rock;
arranging a flexible bottom plate on the surface of a conveying surface of the scraper conveyor, installing material blocking plates on two sides of the conveying surface, wherein the width of a gap between each material blocking plate and the corresponding side surface of the horizontal groove is smaller than a set width;
and pushing the materials to be discharged on the free surface of the rock to the bottom plate in the horizontal groove, and transporting the materials to be discharged to the inner soil discharge field by the conveying surface of the scraper conveyor.
2. The mining process for realizing the transportation-free dumping of the strip mine according to claim 1, wherein a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are installed on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal trough is smaller than the set width:
the striker plate includes the polylith baffle, each the tip of baffle is provided with connecting portion, and is different the baffle passes through connecting portion form after end to end the striker plate.
3. The mining process for realizing the transportation-free dumping of the strip mine according to claim 2, wherein a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are arranged on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than the set width:
each striker plate is attached to the corresponding lateral surface of the horizontal groove.
4. A mining process for realizing non-transportation and dumping of a strip mine according to claim 3, wherein a flexible bottom plate is arranged on the surface of the conveying surface of the scraper conveyor, striker plates are arranged on two sides of the conveying surface, and the width of a gap between each striker plate and the corresponding lateral surface of the horizontal groove is smaller than the set width:
the outer end face of each material baffle and the highest position of the corresponding horizontal groove side face are located on the same horizontal plane.
5. A mining process for realizing transportation-free dumping of strip mines according to claim 1, wherein the step of pushing the material to be dumped on the free surface of the rock onto the bottom plate in the horizontal trough and transporting the material to be dumped to the inner dumping field by the conveying surface of the scraper conveyor is as follows:
and pushing the material to be discharged on the free surface of the rock into the horizontal groove by a bulldozer.
6. A mining process for realizing transport-free dumping of a strip mine according to any of claims 1 to 5, wherein a scraper is provided in the horizontal trough, and the length of the conveying surface of the scraper is greater than the width of the free face of the rock in the step of:
and if the length of the single conveying surface of the single scraper machine is smaller than the width of the free rock surface, splicing by adopting a plurality of scraper machines so that the length of the conveying surface after all the single conveying surfaces are connected is larger than the width of the free rock surface.
7. A mining process to achieve transport-free dumping of strip mines as in claim 6 wherein:
the flexible bottom plate and the material baffle are made of wear-resistant materials.
8. A mining process for realizing non-transportation dumping of a strip mine according to claim 7, wherein in the step of excavating a free face of rock to form a horizontal trough and pushing a bottom surface of the horizontal trough flat, one end of the horizontal trough points to an inner dumping field:
taking the center line of the free surface of the rock as a reference, and excavating two horizontal grooves on two sides of the center line; the distance between two of said lying slots is greater than the minimum distance required for bulldozer steering scheduling.
9. A mining process for realizing non-transportation dumping of a strip mine according to claim 8, wherein the step of excavating a free face of rock to form a horizontal trough and pushing a bottom surface of the horizontal trough flat, one end of the horizontal trough being directed to the inner dumping ground is:
and the bulldozer pushes the materials to be discharged into the two horizontal grooves at intervals so as to reduce the free surface of the rock.
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| CN108756875A (en) * | 2018-03-30 | 2018-11-06 | 中国矿业大学 | The continuous quarrying apparatus of row's open coal mine medium-thickness seam and method in a kind of |
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| CN103216237A (en) * | 2012-12-28 | 2013-07-24 | 中国神华能源股份有限公司 | Open pit coal mine mining process |
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| CN103470262A (en) * | 2013-09-12 | 2013-12-25 | 中国矿业大学 | Mining method of nearly horizontal mineral deposit of opencast coal field by casting and internally dumping |
| CN106869937A (en) * | 2017-04-11 | 2017-06-20 | 中国神华能源股份有限公司 | Discharge method in the side of opencut end |
| CN108756875A (en) * | 2018-03-30 | 2018-11-06 | 中国矿业大学 | The continuous quarrying apparatus of row's open coal mine medium-thickness seam and method in a kind of |
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