Strip mine narrow flat plate operation side coal mining method and equipment

Abstract

The invention belongs to the technical field of coal mining, and particularly discloses a strip mine narrow flat plate operation side coal mining method and equipment. The strip mine narrow flat plate operation side coal mining method comprises the following steps that a side coal pressing area is divided into a plurality of mining strips; mining equipment is arranged on the step flat plate corresponding to the first mining strip, and after the head end of a movable bendable conveying belt is connected with a quick-connection adhesive tape, the tail end of the movable bendable conveying belt is turned to the direction parallel to the step flat plate; the tunneling equipment is stopped after tunneling towards the deep part of the mining strip by a preset distance, the movable bendable conveying belt is separated from the quick-connection rubber belts and moved out of the mining chamber, and then the head end of the next quick-connection rubber belt is guided into the mining chamber through the guide rail to be in butt joint with the tail end of the previous quick-connection rubber belt; after the movable bendable conveying belt is connected with the tail end of the next quick-connection rubber belt, the tunneling equipment continues to conduct tunneling, and the steps are repeated; and the strip mine slope coal equipment is dismantled. The mining method can be used for mining the coal seam above the strip mine.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining, and in particular relates to a method and equipment for mining side coal in a narrow flat plate operation of an open-pit mine. Background Art

[0002] Side coal mining is a technology that directly deploys special mining equipment to mine raw coal in the exposed coal seam at the side of the open-pit mine. The continuous miner is remotely controlled to cut into the coal body to form a mining tunnel. The coal is transported out by the fast-connected belt connected to the rear of the continuous miner one by one, and then transported to the coal pile through the mobile unloading unit.

[0003] At present, the side coal mining technology can only be used to mine the bottom coal seam of multiple coal seams or the bottom layer of thick coal seams in open-pit mines. Since the special recovery equipment occupies a large space outside the mining shaft along the mining shaft axis, the upper coal seam or the step flat plate at the edge of the upper coal seam layer needs to meet the two-way traffic requirements as a transportation road. From the perspective of the overall mining layout of the open-pit mine and ensuring the open-pit mine recovery rate and economic rationality, the width of the step flat plate cannot be further increased. The step flat plate cannot meet the space requirements for side coal mining. Therefore, the upper coal seam of multiple coal seams or the upper layer of the thick coal seam cannot be mined. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a side coal mining method for a narrow flat plate operation in an open-pit mine, which can reduce the space occupied by mining equipment outside the mining tunnel along the mining tunnel axis direction, and can mine the upper coal seam of multiple coal seams in an open-pit mine or the upper layers of a thick coal seam.

[0005] The embodiment of the present invention also provides a side coal mining device for narrow flat plate operation in an open-pit mine.

[0006] The method for mining side coal in a narrow flat plate operation in an open-pit mine according to an embodiment of the present invention comprises the following steps: S100, dividing the side coal compression area into a plurality of mining strips arranged in sequence; S200, arranging a tunneling device on the step plate corresponding to the first mining strip, and arranging a detachably connected quick-connection belt and a mobile flexible conveyor belt in sequence behind the tunneling device, wherein the quick-connection belt is arranged along the center line of the mining strip, and after the head end of the mobile flexible conveyor belt is connected to the quick-connection belt, the tail end is turned to be parallel to the direction of the step plate; S300, the excavation equipment stops after excavating a preset distance into the deep part of the mining strip, separates the movable flexible conveyor belt from the speed-connecting belt and moves out of the mining tunnel, then guides the head end of the next speed-connecting belt into the mining tunnel through a guide track to dock with the tail end of the previous speed-connecting belt, and then connects the movable flexible conveyor belt to the tail end of the next speed-connecting belt, and the excavation equipment continues to excavate, repeating the above steps until the excavation equipment excavates to the stop mining line; S400, removing the excavation equipment, the speed-connecting belt, the mobile flexible conveyor belt and the guide rail from the previous mining strip; S500, repeating steps S200, S300 and S400 until the mining of all the mining strips is completed.

[0007] In this embodiment, in step S200, it also includes connecting a movable unloading member to the tail end of the movable flexible conveyor belt, and the conveying direction of the movable unloading member is parallel to the direction of the step flat plate; It can be understood that as the tunneling equipment advances, the transportation distance is extended by increasing the number of speed-linking belts, and the speed-linking belts are guided by setting guide rails. The speed-linking belt to be connected at the rear can be quickly and accurately pushed into the mining tunnel and connected to the speed-linking belt in the mining tunnel, which can reduce the space and time occupied by the step plate 2. At the same time, there is no need for personnel to enter the mining tunnel 11 for operation. By setting a movable flexible belt, the coal transportation route for side coal mining outside the mining tunnel can be parallel to the direction of the step plate, further reducing the space occupied by the transportation and transfer equipment and the coal pile on the width of the step plate, ensuring that the side of the step plate away from the side coal mining area can always maintain vehicle traffic, reducing the impact on the open-pit mine transportation system, and realizing the mining of side coal in the upper coal seam or upper layer under the conditions of multiple coal seams or thick coal seams, greatly expanding the applicable conditions for side coal mining, and improving the overall recovery rate of side coal mining in open-pit mines.

[0008] In step S400, the open-pit mine narrow flat plate operation side coal mining method further includes removing the mobile unloading component from a corresponding position of the previous mining strip.

[0009] In this embodiment, in step S300, when the excavation equipment is excavating deep into the mining strip, the guide rail is fixed on the step plate, and the guide rail has a length of Δ'L outside the mining tunnel, Δ'L>0.

[0010] In this embodiment, the preset distance is L0+L1+L2, where L0 is the length of the tunneling equipment, L1 is the length of the quick-connecting tape, and L2 is the distance between the tail end of the previous quick-connecting tape and the entrance of the mining tunnel. After the subsequent quick-connecting tape is connected to the previous quick-connecting tape, the length of the subsequent quick-connecting tape outside the mining tunnel is ΔL, where ΔL=L1-L2, and ΔL>0.

[0011] In this embodiment, in step S400, the movable flexible conveyor belt is removed so that the movable flexible conveyor belt is automatically separated from the quick-connecting belt, the tunneling equipment retreats so that the quick-connecting belts located in the mining tunnel are moved out of the mining tunnel one by one, and the quick-connecting belts are removed one by one at the same time, and after the tunneling equipment moves out of the mining tunnel, the guide rail is removed.

[0012] In this embodiment, when the rear fast-connecting tape and the front fast-connecting tape are butted against each other, a portion of the front fast-connecting tape is located on the guide track.

[0013] In this embodiment, after the guide rail is fixed on the step flat plate, the distance between one end of the guide rail located in the mining tunnel and the opening of the mining tunnel is L3, wherein L3≥L2+L1 / 3.

[0014] In this embodiment, before the guide rail is fixed to the step flat plate, the guide rail and the first quick-connect tape are connected via a connecting piece.

[0015] The open-pit mine narrow flat plate operating side coal mining equipment in this embodiment includes tunneling equipment, multiple speed-linked belts, guide rails, and a movable flexible conveyor belt. The multiple speed-linked belts are detachably connected head to tail in sequence, the head ends of the multiple speed-linked belts are detachably connected to the tunneling equipment, the tail ends of the multiple speed-linked belts are detachably connected to the head end of the movable flexible conveyor belt, and two adjacent speed-linked belts are connected via the guide rail.

[0016] In this embodiment, the side coal mining equipment for narrow flat plate operation in an open-pit mine further includes a movable unloading member, the head end of which is detachably connected to the tail end of the movable flexible conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flowchart of a method for mining side coal in a narrow flat plate operation in an open-pit mine according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the state of the open-pit mine narrow flat plate operation side coal mining equipment after starting to dig according to an embodiment of the present invention.

[0019] Figure 3It is a schematic diagram of a state in which an open-pit mine narrow flat plate operation side coal mining equipment according to an embodiment of the present invention pauses after excavating to a preset distance.

[0020] Figure 4 It is a schematic diagram of the state of the open-pit mine narrow flat plate operation side coal mining equipment after extending a quick-connection belt according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram of the state of the open-pit mine narrow flat plate operation side coal mining equipment after extending two quick-connecting belts according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the state of the open-pit mine narrow flat plate operation side coal mining equipment when withdrawing from the mining tunnel according to an embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of the state of the open-pit mine narrow flat plate operation side coal mining equipment after the mining strip is replaced according to an embodiment of the present invention.

[0024] Figure 8 It is a structural schematic diagram of a quick-connecting belt of an open-pit mine narrow flat plate operation side coal mining equipment according to an embodiment of the present invention.

[0025] Reference numerals: 1. Coal pressing area on the side wall; 2. Step plate; 3. Mining strip; 4. Excavation equipment; 5. Quick-connecting tape; 5-1. Socket; 5-2. Connecting pin; 6. Guide rail; 7. Mobile flexible conveyor belt; 8. Mobile unloading parts; 9. Coal pile; 10. Stop mining line; 11. Mining shaft. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] In this embodiment, if Figures 1 to 7 As shown, the side coal mining method of narrow flat plate operation in open pit mine includes the following steps: S100, dividing the side coal compression area 1 into a plurality of mining strips 3 arranged in sequence.

[0028] The side coal compression area is divided into a plurality of mining strips 3 arranged in sequence, and planning is performed before mining the side coal compression area to ensure the continuity of subsequent mining operations.

[0029] S200, arrange the excavation equipment 4 on the step plate 2 corresponding to the first mining strip 3, and arrange the detachably connected quick-connecting belt 5 and the movable flexible conveyor belt 7 in sequence behind the excavation equipment 4, the quick-connecting belt 5 is arranged along the center line of the mining strip 3, and the head end of the movable flexible conveyor belt 7 is connected to the quick-connecting belt 5 and then the tail end is turned to be parallel to the direction of the step plate 2.

[0030] For example, the tunneling equipment 4 may be a continuous miner or a tunneling machine.

[0031] like Figure 8 As shown, the two ends of the fast-connecting tape 5 in the conveying direction are respectively provided with a connecting pin 5-2 and a socket 5-1, and a socket 5-1 is provided on the socket 5-1. The connecting pin 5-2 is provided with a barbed structure that pops out automatically. When the barbed structure is squeezed, it will be retracted into the connecting pin 5-2. When the barbed structure is not compressed, it can automatically pop out. When two adjacent fast-connecting tapes 5 need to be connected, the connecting pin 5-2 of one of the fast-connecting tapes 5 is aligned with the socket on the other fast-connecting tape 5, and the two fast-connecting tapes 5 are pushed relative to each other so that the connecting pin 5-2 can be inserted into the socket, and the connection of the two fast-connecting tapes 5 can be achieved. When the two fast-connecting tapes 5 need to be separated, the two fast-connecting tapes 5 can be separated manually. Exemplarily, one end of the fast-connecting tape 5 can be provided with two connecting pins 5-2, and the other end can be provided with two sockets 5-1, which is conducive to improving the reliability of the connection between the fast-connecting tapes 5. Of course, two adjacent fast-connecting belts 5 can also be connected in other ways, as long as the two adjacent fast-connecting belts 5 can be connected to each other under the condition that relative thrust is applied to the two adjacent fast-connecting belts 5. In addition, the fast-connecting belt 5 itself has a conveying function. The coal mined by the tunneling equipment 4 can be conveyed to the outside of the mining tunnel 11 through the fast-connecting belt 5. The specific structure of the fast-connecting belt 5 will not be described in detail here.

[0032] An electromagnetic connection pin may be provided at one end of the mobile flexible conveyor belt 7 connected to the fast connection tape 5, and the electromagnetic connection pin is connected to the jack of the fast connection tape 5, so that the connection between the mobile flexible conveyor belt 7 and the fast connection tape 5 can be disconnected by remote control. The mobile flexible conveyor belt 7 and the fast connection tape 5 may also be connected in other ways, which are not limited here.

[0033] S300, the excavation equipment 4 stops after excavating a preset distance into the deep part of the mining strip 3, separates the movable flexible conveyor belt 7 from the speed-linking belt 5 and moves out of the mining tunnel 11, then guides the head end of the next speed-linking belt 5 through the guide track 6 in the mining tunnel 11 to dock with the tail end of the previous speed-linking belt 5, and then connects the movable flexible conveyor belt 7 to the tail end of the next speed-linking belt 5, and the excavation equipment 4 continues to excavate, and repeats the above steps until the excavation equipment 4 excavates to the stop mining line 10.

[0034] When the excavation equipment 4 excavates deep into the mining strip 3, the excavation equipment 4 can drive the quick-connecting belt 5 and the mobile flexible conveyor belt 7 to move as a whole in the excavation direction, or the quick-connecting belt 5 can be driven to move in the excavation direction, and the curved mobile flexible conveyor belt 7 can be stretched by the quick-connecting belt 5, while the tail end position of the mobile flexible conveyor belt 7 remains unchanged, thereby completing the transportation of coal during the excavation process.

[0035] Repeat the above steps until the excavation equipment 4 excavates to the stop line 10. The repeated steps refer to that the excavation equipment 4 stops after excavating a preset distance into the deep part of the mining strip 3, separates the mobile flexible conveyor belt 7 from the speed-connecting belt 5 and moves out of the mining tunnel 11, and then connects the head end of the next speed-connecting belt 5 to the tail end of the previous speed-connecting belt 5 through the guide track 6, and then connects the mobile flexible conveyor belt 7 to the tail end of the next speed-connecting belt 5, and the excavation equipment 4 continues to excavate. The next speed-connecting belt 5 is connected to the previous speed-connecting belt 5, which means that the second speed-connecting belt 5 is connected to the first speed-connecting belt 5, the third speed-connecting belt 5 is connected to the second speed-connecting belt 5, the fourth speed-connecting belt 5 is connected to the third speed-connecting belt 5, and so on. The number of speed-connecting belts 5 can be adaptively adjusted according to the actual length of the mining strip 3, and is not limited here.

[0036] S400 , removing the excavation equipment 4 , the quick-connection belt 5 , the mobile flexible conveyor belt 7 and the guide rail 6 from the previous mining strip 3 .

[0037] S500, repeat steps S200, S300 and S400 until the mining of all mining strips 3 is completed.

[0038] It can be understood that as the tunneling equipment 4 advances, the transportation distance is extended by increasing the number of quick-linking belts 5, and the quick-linking belts 5 are guided by setting guide rails 6, so that the quick-linking belts 5 to be connected at the rear can be quickly and accurately pushed into the mining cave 11 and connected to the quick-linking belts 5 in the mining cave 11, which can reduce the occupied space and time of the step plate 2. At the same time, there is no need for personnel to enter the mining cave 11 for operation. By setting a movable flexible belt, the coal transportation route for side coal mining outside the mining cave 11 can be parallel to the direction of the step plate 2, further reducing the space occupied by the transportation and transfer equipment and the coal pile 9 on the width of the step plate 2, ensuring that the side of the step plate 2 away from the side coal mining area can always maintain vehicle traffic, reducing the impact on the open-pit mine transportation system, and realizing the side coal mining of the upper coal seam or upper layer under the conditions of multiple coal seams or thick coal seams, greatly expanding the applicable conditions for side coal mining, and improving the overall recovery rate of side coal mining in open-pit mines.

[0039] In step S400, when the mobile flexible conveyor belt 7 is removed, the mobile flexible conveyor belt 7 is automatically separated from the quick-connecting belt 5, and the excavation equipment 4 retreats so that the quick-connecting belt 5 located in the mining tunnel 11 is moved out of the mining tunnel 11 one by one, and the quick-connecting belt 5 is removed one by one at the same time. After the excavation equipment 4 is moved out of the mining tunnel 11, the guide rail 6 is removed.

[0040] Specifically, the mobile flexible conveyor belt 7 and the quick-connecting belt 5 can be automatically separated by setting an electromagnetic connecting pin at the connecting end of the mobile flexible conveyor belt 7 and the quick-connecting belt 5 as mentioned above, so as to disconnect the connection between the mobile flexible conveyor belt 7 and the quick-connecting belt 5 by remote control.

[0041] It is understandable that by automatically separating the mobile flexible conveyor belt 7 from the quick-connection belt 5, the operator can separate the mobile flexible conveyor belt 7 from the quick-connection belt 5 without entering the mining tunnel 11, thereby improving the safety of the operation. During the retreat process of the excavation equipment 4, the quick-connection belt 5 located in the mining tunnel 11 can be driven to move out of the mining tunnel 11 in sequence, so that the quick-connection belt 5 moved out of the mining tunnel 11 can be removed outside the mining tunnel 11 in sequence. After the excavation equipment 4 moves out of the mining tunnel 11, the guide rail 6 is removed. The removal of the entire mining equipment does not need to be carried out in the mining tunnel 11, thereby improving the safety of open-pit coal mining.

[0042] In this embodiment, in step S200, the mobile unloading member 8 is connected to the tail end of the mobile flexible conveyor belt 7, and the conveying direction of the mobile unloading member 8 is parallel to the direction of the step plate 2. In step S400, the mobile unloading member 8 is removed from the corresponding position of the previous mining strip 3.

[0043] Specifically, when the mobile unloading member 8 is removed from the previous mining strip 3, the mobile unloading member 8 and the mobile flexible conveyor belt 7 are moved in a direction parallel to the step flat plate 2, and the mobile flexible conveyor belt 7 is moved out of the mining shaft 11 to prepare for the mining of the next mining strip 3.

[0044] It can be understood that by arranging a movable unloading member 8 at the rear end of the flexible conveyor belt and conveying the coal to the coal pile 9 via the movable unloading member 8, it is convenient to unload the coal transported from the upstream.

[0045] In step S300, when the excavation equipment 4 is excavating deep into the mining strip 3, the guide rail 6 is fixed to the step plate 2, and the guide rail 6 has a length of Δ'L outside the mining tunnel 11, Δ'L>0.

[0046] It should be noted that the length Δ'L of the guide rail 6 outside the mining tunnel 11 only needs to meet the need of fixing it outside the mining tunnel 11 and the need of withdrawing the guide rail 6 after all the equipment in the mining tunnel 11 is withdrawn. The specific value of Δ'L is not limited here.

[0047] In this embodiment, by leaving a length of Δ'L of the guide rail 6 outside the mining tunnel 11 when fixing the guide rail 6, the guide rail 6 can be easily fixed outside the mining tunnel 11. At the same time, when the guide rail 6 needs to be removed, the guide rail 6 can be easily moved out of the mining tunnel 11 as a whole by operating the part exposed outside the mining tunnel 11.

[0048] In this embodiment, the preset distance is L0+L1+L2, where L0 is the length of the excavation equipment 4, L1 is the length of the quick-connect tape 5, and L2 is the distance between the tail end of the previous quick-connect tape 5 and the opening of the mining tunnel 11, and 0<L2.

[0049] It should be noted that the distance L2 between the tail end of the previous quick-link tape 5 and the opening of the mining tunnel 11 is greater than 0, so that after the excavation equipment 4 excavates a certain distance, there is installation space for the next quick-link tape 5 between the tail end of the previous quick-link tape 5 and the opening of the mining tunnel 11.

[0050] In this embodiment, after the later fast-connecting tape 5 is connected to the earlier fast-connecting tape 5 , the length of the later fast-connecting tape 5 outside the mining tunnel 11 is ΔL, wherein ΔL=L1-L2, and ΔL>0.

[0051] It can be understood that the distance L2 between the tail end of the preceding quick-connecting tape 5 and the opening of the mining tunnel 11 is smaller than L1, so that after the subsequent quick-connecting tape 5 is connected to the preceding quick-connecting tape 5, the tail end of the subsequent quick-connecting tape 5 can be exposed outside the mining tunnel 11, which can facilitate the connection between the movable flexible conveyor belt 7 and the quick-connecting tape 5.

[0052] In this embodiment, when the rear fast-connecting adhesive tape 5 and the front fast-connecting adhesive tape 5 are butted against each other, a portion of the front fast-connecting adhesive tape 5 is located on the guide track 6 .

[0053] It can be understood that when the subsequent fast-connecting tape 5 is connected to the previous fast-connecting tape 5, the previous fast-connecting tape 5 is located on the guide track 6, and the previous fast-connecting tape 5 and the subsequent fast-connecting tape 5 can be guided simultaneously by the guide track 6, thereby facilitating the accurate connection of the previous fast-connecting tape 5 and the subsequent fast-connecting tape 5.

[0054] In this embodiment, after the guide rail 6 is fixed on the step flat plate 2, the distance between one end of the guide rail 6 located in the mining tunnel 11 and the opening of the mining tunnel 11 is L3, wherein L3≥L2+L1 / 3.

[0055] Specifically, since L3 ≥ L2 + L1 / 3, the length L4 of the guide rail 6 = Δ′L + L3 ≥ Δ′L + L2 + L1 / 3.

[0056] It can be understood that by setting the distance L3 between one end of the guide rail 6 located in the mining tunnel 11 and the opening of the mining tunnel 11 to ≥L2+L1 / 3, at least 1 / 3 of the length of the prior quick-connecting tape 5 can be located on the guide rail 6, which is conducive to ensuring the reliable connection between the subsequent quick-connecting tape 5 and the prior quick-connecting tape 5.

[0057] In this embodiment, before the guide rail 6 is fixed to the step plate 2, the guide rail 6 and the first quick-connecting tape 5 are connected via a connecting piece.

[0058] It is understandable that before the guide rail 6 is fixed to the step plate 2, the guide rail 6 and the quick-connection belt 5 are connected by a connector, and when the excavation equipment 4 drives the quick-connection mining strip 3 to move deep, the guide rail 6 can be driven to move synchronously by the quick-connection belt 5. Of course, when the quick-connection belt 5 moves, the guide rail 6 can also be directly driven to move synchronously with the quick-connection belt 5, which is not limited here.

[0059] In this embodiment, the side coal mining equipment for narrow flat plate operation in an open-pit mine includes a tunneling device 4, multiple speed-linked belts 5, a guide rail 6, and a movable flexible conveyor belt 7. The multiple speed-linked belts 5 are detachably connected head to tail in sequence, the head ends of the multiple speed-linked belts 5 are detachably connected to the tunneling device 4, the tail ends of the multiple speed-linked belts 5 are detachably connected to the head end of the movable flexible conveyor belt 7, and two adjacent speed-linked belts 5 are connected via the guide rail 6.

[0060] The open-pit mine narrow flat plate operation side coal mining equipment in this embodiment is applied to the above-mentioned open-pit mine narrow flat plate operation side coal mining method, and its technical effect is the same as the above-mentioned open-pit mine narrow flat plate operation side coal mining method, which will not be repeated here.

[0061] In this embodiment, the open-pit mine narrow flat plate operation side coal mining equipment further includes a movable unloading component 8, and the head end of the movable unloading component 8 is detachably connected to the tail end of the movable flexible conveyor belt 7.

[0062] It should be noted that by arranging a movable unloading member 8 at the rear end of the flexible conveyor belt, it is convenient to unload the coal transported from the upstream.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for mining side coal in a narrow flat plate operation in an open-pit mine, characterized in that: The steps include: S100, dividing the side coal compression area into a plurality of mining strips arranged in sequence; S200, arranging a tunneling device on the step plate corresponding to the first mining strip, and arranging a detachably connected quick-connection belt and a mobile flexible conveyor belt in sequence behind the tunneling device, wherein the quick-connection belt is arranged along the center line of the mining strip, and after the head end of the mobile flexible conveyor belt is connected to the quick-connection belt, the tail end is turned to be parallel to the direction of the step plate; S300, the excavation equipment stops after excavating a preset distance into the deep part of the mining strip, separates the movable flexible conveyor belt from the speed-connecting belt and moves out of the mining tunnel, then guides the head end of the next speed-connecting belt into the mining tunnel through a guide track to dock with the tail end of the previous speed-connecting belt, and then connects the movable flexible conveyor belt to the tail end of the next speed-connecting belt, and the excavation equipment continues to excavate, repeating the above steps until the excavation equipment excavates to the stop mining line; S400, removing the excavation equipment, the speed-connecting belt, the mobile flexible conveyor belt and the guide rail from the previous mining strip; S500, repeating steps S200, S300 and S400 until the mining of all the mining strips is completed.

2. The method for mining side coal in a narrow flat plate operation in an open-pit mine according to claim 1, characterized in that: In step S200, it also includes connecting a movable unloading member to the tail end of the movable flexible conveyor belt, and the conveying direction of the movable unloading member is parallel to the direction of the step flat plate; In step S400, the method further includes removing the mobile unloading member from the previous mining strip.

3. The open-pit mine narrow flat plate operation side coal mining method according to claim 1 is characterized in that: In step S300, when the excavation equipment is excavating deep into the mining strip, the guide rail is fixed on the step plate, and the guide rail has a length of Δ'L outside the mining tunnel, Δ'L>0.

4. The method for mining side coal in narrow flat plate operation in open-pit mine according to claim 1, characterized in that: The preset distance is L0+L1+L2, where L0 is the length of the tunneling equipment, L1 is the length of the quick-connecting tape, and L2 is the distance between the tail end of the previous quick-connecting tape and the entrance of the mining tunnel. After the subsequent quick-connecting tape is connected to the previous quick-connecting tape, the length of the subsequent quick-connecting tape outside the mining tunnel is ΔL, where ΔL=L1-L2, and ΔL>0.

5. The method for mining side coal in narrow flat plate operation in open-pit mine according to claim 1, characterized in that: In step S400, when the movable flexible conveyor belt is removed, the movable flexible conveyor belt is automatically separated from the quick-connecting belt, the tunneling equipment retreats so that the quick-connecting belts located in the mining tunnel are moved out of the mining tunnel one by one, and the quick-connecting belts are removed one by one at the same time. After the tunneling equipment moves out of the mining tunnel, the guide rail is removed.

6. The method for mining side coal in narrow flat plate operation in open-pit mine according to claim 4, characterized in that: When the rear fast-connecting tape and the front fast-connecting tape are butted against each other, a portion of the front fast-connecting tape is located on the guide track.

7. The method for mining side coal in a narrow flat plate operation in an open-pit mine according to claim 6, characterized in that: After the guide rail is fixed on the step flat plate, the distance between one end of the guide rail located in the mining tunnel and the opening of the mining tunnel is L3, wherein L3≥L2+L1 / 3.

8. The open-pit mine narrow flat plate operation side coal mining method according to any one of claims 1 to 7, characterized in that: Before the guide rail is fixed to the step flat plate, the guide rail and the first quick-connecting tape are connected via a connecting piece.

9. An open-pit mine narrow flat plate operation side coal mining equipment, characterized in that: It includes excavation equipment, multiple speed-linked belts, guide rails, and a movable flexible conveyor belt. The multiple speed-linked belts are detachably connected head to tail in sequence, the head ends of the multiple speed-linked belts are detachably connected to the excavation equipment, the tail ends of the multiple speed-linked belts are detachably connected to the head end of the movable flexible conveyor belt, and two adjacent speed-linked belts are connected via the guide rail.

10. The open-pit mine narrow flat plate operation side coal mining equipment according to claim 9, characterized in that: It also comprises a movable unloading piece, the head end of which is detachably connected to the tail end of the movable flexible conveyor belt.

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