Method and equipment for strip mining of coal from the edge of a narrow flat bench in an open pit mine

Abstract

The present application belongs to the technical field of coal mining, and specifically discloses a method and equipment for mining coal on the edge of a strip mine with narrow flat benches. The method comprises the following steps: dividing the coal area on the edge into a plurality of mining strips; arranging mining equipment on the first mining strip on the bench; connecting the first end of a movable flexible conveyor belt to the speed joint belt and turning the tail end to be parallel to the strike of the bench; stopping the heading equipment after heading a preset distance into the deep part of the mining strip; separating the movable flexible conveyor belt from the speed joint belt and moving it out of the mining chamber; guiding the first end of the next speed joint belt through a guide rail to be connected to the tail end of the previous speed joint belt in the mining chamber; connecting the movable flexible conveyor belt to the tail end of the next speed joint belt; continuing to head with the heading equipment; repeating the above steps; and removing the coal mining equipment on the edge of the strip mine. The present application can mine the coal seam on the upper part of the strip mine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mining, and particularly relates to a method and equipment for mining coal in a narrow flat plate operation side slope of an open-pit mine. BACKGROUND

[0002] Side slope coal mining is a technology of directly arranging special mining equipment in the side slope of the open-pit mine to mine the coal seam. The continuous miner is remotely controlled to cut into the coal body to form a mining chamber, the coal is transported out by the speed joint belt connected one by one at the rear of the continuous miner, and the coal is transported to the coal pile by the mobile unloading part.

[0003] At present, the side slope coal mining technology can only mine the bottom coal seam of the multi-coal seam or the bottom part of the thick coal seam in the pit of the open-pit mine. Since the special recovery equipment occupies a large space along the axis of the mining chamber, the step flat plate at the edge of the upper coal seam or the upper coal seam layer needs to meet the demand of two-way traffic as a transportation road. From the perspective of the overall mining layout of the open-pit mine and the guarantee of the mining rate and economic rationality of the open-pit mine, the width of the step flat plate cannot be further increased, and the step flat plate cannot meet the space requirement of the side slope coal mining. Therefore, the upper coal seam of the multi-coal seam or the upper layer of the thick coal seam cannot be mined. SUMMARY

[0004] The present application aims to at least solve one of the problems in the related art. To this end, the embodiments of the present application propose an open-pit mine narrow flat plate operation side slope coal mining method, which can reduce the space occupied by the mining equipment along the axis of the mining chamber, and can mine the upper coal seam of the multi-coal seam or the upper layer of the thick coal seam in the open-pit mine.

[0005] The embodiments of the present application also propose an open-pit mine narrow flat plate operation side slope coal mining equipment.

[0006] The open-pit mine narrow flat plate operation side slope coal mining method of the embodiments of the present application comprises the following steps:

[0007] S100, dividing the side slope coal area into a plurality of mining strips arranged in sequence;

[0008] S200, arranging a tunneling device corresponding to the first mining strip on the step flat plate, and arranging a speed joint belt and a mobile flexible conveyor belt connected in sequence behind the tunneling device, the speed joint belt is arranged along the center line of the mining strip, and the tail end of the mobile flexible conveyor belt is turned to be parallel to the strike of the step flat plate after the head end is connected with the speed joint belt;

[0009] S300, the tunneling equipment stops after tunneling a preset distance to the deep part of the mining strip, separates the mobile bendable conveyor belt from the quick connection rubber belt and moves out of the mining chamber, then guides the head of the next quick connection rubber belt into the mining chamber to butt against the tail of the previous quick connection rubber belt through the guide rail, connects the mobile bendable conveyor belt with the tail of the next quick connection rubber belt, and then the tunneling equipment continues to tunnel, and repeats the above steps until the tunneling equipment tunnels to the stop line;

[0010] S400, the tunneling equipment, the quick connection rubber belt, the mobile bendable conveyor belt and the guide rail are removed from the previous mining strip;

[0011] S500, repeat steps S200, S300 and S400 until the mining of all the mining strips is completed.

[0012] In this embodiment, in step S200, a mobile unloading device is connected to the tail of the mobile bendable conveyor belt, and the conveying direction of the mobile unloading device is parallel to the direction of the bench flat plate.

[0013] It can be understood that, with the tunneling of the tunneling equipment, the conveying distance is extended by increasing the number of quick connection rubber belts, and the quick connection rubber belts are guided by the guide rail, so that the subsequent quick connection rubber belts to be connected can be quickly and accurately pushed into the mining chamber and connected with the previous quick connection rubber belt in the mining chamber, which can reduce the occupied space and time of the bench flat plate 2, and personnel do not need to enter the mining chamber 11 for operation. By arranging the mobile bendable conveyor belt, the coal conveying route outside the mining chamber can be parallel to the direction of the bench flat plate, further reducing the occupied space of the transportation and transfer equipment and the coal pile on the width of the bench flat plate, ensuring that the side of the bench flat plate away from the side coal mining area can always maintain vehicle traffic, reducing the influence on the transportation system of the open-pit mine, realizing the side coal mining of the upper coal seam or the upper part of the coal seam under the condition of multiple coal seams or thick coal seams, greatly expanding the applicable conditions of the side coal mining, and improving the overall recovery rate of the side coal mining of the open-pit mine.

[0014] In step S400, the open-pit mine narrow flat plate operation side coal mining method further comprises removing the mobile unloading device from the corresponding position of the previous mining strip.

[0015] In this embodiment, in step S300, when the tunneling equipment tunnels to the deep part of the mining strip, the guide rail is fixed on the bench flat plate, and the guide rail has a length of Δ'L outside the mining chamber, Δ'L>0.

[0016] In the embodiment, the preset distance is L0+L1+L2, wherein L0 is the length of the tunneling equipment, L1 is the length of the quick-connecting rubber belt, and L2 is the distance between the tail end of the previous quick-connecting rubber belt and the opening of the tunnel. After the quick-connecting rubber belt and the previous quick-connecting rubber belt are connected, the length of the quick-connecting rubber belt outside the tunnel is ΔL, wherein ΔL=L1-L2, and ΔL>0.

[0017] In the embodiment, in step S400, the mobile flexible conveying belt is removed, the mobile flexible conveying belt is automatically separated from the quick-connecting rubber belt, the tunneling equipment is retreated to move the quick-connecting rubber belt in the tunnel out of the tunnel in sequence, the quick-connecting rubber belt is removed in sequence, and the guide rail is removed after the tunneling equipment moves out of the tunnel.

[0018] In the embodiment, when the quick-connecting rubber belt and the previous quick-connecting rubber belt are connected, the previous quick-connecting rubber belt is partially located on the guide rail.

[0019] In the embodiment, after the guide rail is fixed on the bench flat disc, the distance between one end of the guide rail in the tunnel and the opening of the tunnel is L3, wherein L3≥L2+L1 / 3.

[0020] In the embodiment, before the guide rail is fixed on the bench flat disc, the guide rail and the first quick-connecting rubber belt are connected through a connecting piece.

[0021] The open-pit mine narrow flat disc operation side slope coal mining equipment in the embodiment comprises tunneling equipment, a plurality of quick-connecting rubber belts, a guide rail, and a mobile flexible conveying belt. The plurality of quick-connecting rubber belts are sequentially and detachably connected. The first end of the plurality of quick-connecting rubber belts is detachably connected with the tunneling equipment. The tail end of the plurality of quick-connecting rubber belts is detachably connected with the first end of the mobile flexible conveying belt. Adjacent two quick-connecting rubber belts are connected through the guide rail.

[0022] In the embodiment, the open-pit mine narrow flat disc operation side slope coal mining equipment further comprises a mobile unloading piece. The first end of the mobile unloading piece is detachably connected with the tail end of the mobile flexible conveying belt. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a flowchart of the open-pit mine narrow flat disc operation side slope coal mining method in the embodiment.

[0024] Figure 2 The figure is a state schematic diagram of the open-pit mine narrow flat disc operation side slope coal mining equipment after the tunneling equipment starts tunneling in the embodiment.

[0025] Figure 3is a schematic diagram of a state of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application after excavation to a preset distance is paused.

[0026] Figure 4 is a schematic diagram of a state of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application after one speed joint rubber belt is extended.

[0027] Figure 5 is a schematic diagram of a state of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application after two speed joint rubber belts are extended.

[0028] Figure 6 is a schematic diagram of a state of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application when the mining tunnel is withdrawn.

[0029] Figure 7 is a schematic diagram of a state of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application after a mining strip is replaced.

[0030] Figure 8 is a schematic diagram of a structure of a speed joint rubber belt of the strip mine narrow flat disc operation edge coal mining equipment of the embodiment of the present application.

[0031] Reference signs:

[0032] 1, edge coal area; 2, step flat disc; 3, mining strip; 4, excavation equipment; 5, speed joint rubber belt; 5-1, socket; 5-2, connecting pin; 6, guide rail; 7, movable flexible conveying belt; 8, movable unloading part; 9, coal pile; 10, stop mining line; 11, mining tunnel. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the present embodiment, as shown in Figures 1 to 7 , the strip mine narrow flat disc operation edge coal mining method comprises the following steps:

[0035] S100, the edge coal area 1 is divided into a plurality of mining strips 3 arranged in sequence.

[0036] The edge coal area is divided into a plurality of mining strips 3 arranged in sequence, and planning is performed before mining the edge coal area to ensure the continuity of the later mining operation.

[0037] S200, a tunneling device 4 is arranged on the bench plate 2 corresponding to the first mining strip 3, and a detachable quick-connect belt 5 and a mobile flexible conveyor belt 7 are arranged in sequence after the tunneling device 4. The quick-connect belt 5 is arranged along the center line of the mining strip 3. After the first end of the mobile flexible conveyor belt 7 is connected to the quick-connect belt 5, the tail end is turned to be parallel to the direction of the bench plate 2.

[0038] For example, the tunneling equipment 4 can be a continuous mining machine or a tunneling machine, etc.

[0039] like Figure 8 As shown, each end of the quick-connect tape 5 in the conveying direction is provided with a connecting pin 5-2 and a socket 5-1, respectively. The socket 5-1 is provided with a insertion hole. The connecting pin 5-2 is provided with an automatically popping barbed structure. When the barbed structure is compressed, it retracts into the connecting pin 5-2; when not compressed, it pops out automatically. When two adjacent quick-connect tapes 5 need to be connected, the connecting pin 5-2 of one quick-connect tape 5 is aligned with the insertion hole on the other quick-connect tape 5, and the two quick-connect tapes 5 are pushed relative to each other so that the connecting pin 5-2 can be inserted into the insertion hole, thus connecting the two quick-connect tapes 5. When it is necessary to separate the two quick-connect tapes 5, they can be separated manually. For example, one end of the quick-connect tape 5 can be provided with two connecting pins 5-2, and the other end can be provided with two sockets 5-1, which helps to improve the reliability of the connection between the quick-connect tapes 5. Of course, two adjacent quick-connect belts 5 can also be connected in other ways, as long as they can be connected to each other when relative thrust is applied to the two adjacent quick-connect belts 5. In addition, the quick-connect belts 5 themselves have a conveying function. The coal mined by the tunneling equipment 4 can be transported to the outside of the mining chamber 11 through the quick-connect belts 5. The specific structure of the quick-connect belts 5 will not be described in detail here.

[0040] An electromagnetic connecting pin can be installed at one end of the mobile flexible conveyor belt 7 that connects to the quick-connect belt 5. This connecting pin is then connected to the insertion hole of the quick-connect belt 5, allowing the connection between the mobile flexible conveyor belt 7 and the quick-connect belt 5 to be remotely disconnected. Other connection methods between the mobile flexible conveyor belt 7 and the quick-connect belt 5 are also possible and are not limited here.

[0041] S300, after the tunneling equipment 4 has tunneled a preset distance into the depth of the mining strip 3, it stops, separates the mobile flexible conveyor belt 7 from the quick-connect belt 5 and moves it out of the mining chamber 11, and then guides the first end of the next quick-connect belt 5 through the guide rail 6 to connect with the tail end of the previous quick-connect belt 5 in the mining chamber 11. After connecting the mobile flexible conveyor belt 7 to the tail end of the next quick-connect belt 5, the tunneling equipment 4 continues to tunnel, repeating the above steps until the tunneling equipment 4 tunnels to the stop line 10.

[0042] When the tunneling equipment 4 tunnels to the deep part of the mining strip 3, the tunneling equipment 4 can drive the quick connection rubber belt 5 and the movable flexible conveying belt 7 to move as a whole in the tunneling direction, or the tunneling equipment 4 can drive the quick connection rubber belt 5 to move in the tunneling direction, and at the same time, the quick connection rubber belt 5 can stretch the movable flexible conveying belt 7 arranged in a curved manner, and the tail end position of the movable flexible conveying belt 7 remains unchanged, and at the same time, the conveying of the coal in the tunneling process is completed.

[0043] The above steps are repeated until the tunneling equipment 4 tunnels to the stop mining line 10. The repeated steps are that the tunneling equipment 4 stops after tunneling to the deep part of the mining strip 3 by a preset distance, the movable flexible conveying belt 7 is separated from the quick connection rubber belt 5 and moved out of the mining chamber 11, then the head end of the next quick connection rubber belt 5 is connected to the tail end of the previous quick connection rubber belt 5 through the guide rail 6, the movable flexible conveying belt 7 is connected to the tail end of the next quick connection rubber belt 5, and then the tunneling equipment 4 continues to tunnel. The next quick connection rubber belt 5 is connected to the previous quick connection rubber belt 5, that is, the second quick connection rubber belt 5 is connected to the first quick connection rubber belt 5, the third quick connection rubber belt 5 is connected to the second quick connection rubber belt 5, the fourth quick connection rubber belt 5 is connected to the third quick connection rubber belt 5, and so on. The number of the quick connection rubber belt 5 can be adjusted adaptively according to the actual length of the mining strip 3, and is not limited herein.

[0044] S400, the tunneling equipment 4, the quick connection rubber belt 5, the movable flexible conveying belt 7 and the guide rail 6 are removed from the previous mining strip 3.

[0045] S500, the steps S200, S300 and S400 are repeated until the mining of all the mining strips 3 is completed.

[0046] It can be understood that, with the tunneling of the tunneling equipment 4, the conveying distance is extended by increasing the number of the quick connection rubber belts 5, and the quick connection rubber belts 5 are guided by the guide rail 6, so that the subsequent quick connection rubber belts 5 to be connected can be quickly and accurately pushed into the mining chamber 11 and connected to the previous quick connection rubber belt 5 in the mining chamber 11, the occupied space and time of the bench flat 2 can be reduced, personnel do not need to enter the mining chamber 11 to operate, the movable flexible conveying belt can be arranged to make the coal conveying route of the coal mining in the side slope parallel to the strike of the bench flat 2, the occupied space of the conveying and transferring equipment and the coal pile 9 on the width of the bench flat 2 is further reduced, the side of the bench flat 2 away from the coal mining area can always keep the vehicle passing, the influence on the transportation system of the open-pit mine is reduced, the side slope coal mining in the upper coal seam or the upper part of the coal seam under the conditions of multiple coal seams or thick coal seams is realized, the applicable conditions of the side slope coal mining are greatly expanded, and the overall recovery rate of the side slope coal mining of the open-pit mine is improved.

[0047] In step S400, when the mobile flexible conveyor belt 7 is removed, the mobile flexible conveyor belt 7 is automatically separated from the quick-connection rubber belt 5, the tunneling equipment 4 is retracted to move the quick-connection rubber belt 5 located in the mining gallery 11 out of the mining gallery 11 in sequence, and the quick-connection rubber belt 5 is removed in sequence. After the tunneling equipment 4 is moved out of the mining gallery 11, the guide rail 6 is removed.

[0048] Specifically, the mobile flexible conveyor belt 7 and the quick-connection rubber belt 5 can be automatically separated in the manner that the electromagnetic connecting pin is arranged at the connecting end of the mobile flexible conveyor belt 7 and the quick-connection rubber belt 5, and the connection between the mobile flexible conveyor belt 7 and the quick-connection rubber belt 5 is disconnected by remote control.

[0049] It can be understood that the mobile flexible conveyor belt 7 and the quick-connection rubber belt 5 can be separated without the operator entering the mining gallery 11, which improves the safety of the operation. During the retraction of the tunneling equipment 4, the quick-connection rubber belt 5 located in the mining gallery 11 can be moved out of the mining gallery 11 in sequence, so that the quick-connection rubber belt 5 moved out of the mining gallery 11 can be removed outside the mining gallery 11 in sequence. After the tunneling equipment 4 is moved out of the mining gallery 11, the guide rail 6 is removed. The removal of the entire mining equipment does not need to be performed in the mining gallery 11, which improves the safety of the open-pit coal mining.

[0050] In the embodiment, in step S200, the mobile unloading device 8 is connected to the tail end of the mobile flexible conveyor belt 7, and the conveying direction of the mobile unloading device 8 is parallel to the direction of the benching disc 2. In step S400, the mobile unloading device 8 is removed from the corresponding position of the previous mining strip 3.

[0051] Specifically, when the mobile unloading device 8 is removed from the previous mining strip 3, the mobile unloading device 8 and the mobile flexible conveyor belt 7 are moved in the direction parallel to the benching disc 2, and the mobile flexible conveyor belt 7 is moved out of the mining gallery 11, which prepares for the mining of the next mining strip 3.

[0052] It can be understood that the mobile unloading device 8 is arranged at the tail end of the flexible conveyor belt, and the coal conveyed from the upstream is unloaded by the mobile unloading device 8, which facilitates the unloading of the coal.

[0053] In step S300, when the tunneling equipment 4 is excavated to the deep part of the mining strip 3, the guide rail 6 is fixed to the benching disc 2, and the guide rail 6 has a length of Δ'L outside the mining gallery 11, Δ'L>0.

[0054] It should be noted that the length Δ'L of the guide rail 6 outside the mining chamber 11 only needs to meet the need of fixing the guide rail 6 outside the mining chamber 11 and the need of removing the guide rail 6 after the equipment in the mining chamber 11 is completely removed. The specific value of Δ'L is not limited here.

[0055] In the embodiment, by leaving the guide rail 6 with a length of Δ'L outside the mining chamber 11 when the guide rail 6 is fixed, the guide rail 6 can be conveniently fixed outside the mining chamber 11, and when the guide rail 6 needs to be removed, the part of the guide rail 6 outside the mining chamber 11 can be operated to conveniently remove the guide rail 6 from the mining chamber 11.

[0056] In the embodiment, the preset distance is L0+L1+L2, where L0 is the length of the tunneling equipment 4, L1 is the length of the quick-connecting belt 5, and L2 is the distance between the tail end of the previous quick-connecting belt 5 and the opening of the mining chamber 11, and 0

[0057] It should be noted that the distance L2 between the tail end of the previous quick-connecting belt 5 and the opening of the mining chamber 11 is greater than 0, which can leave installation space for the next quick-connecting belt 5 after the tunneling equipment 4 tunnels for a distance.

[0058] In the embodiment, the length of the subsequent quick-connecting belt 5 outside the mining chamber 11 after the subsequent quick-connecting belt 5 is connected to the previous quick-connecting belt 5 is ΔL, where ΔL=L1-L2, and ΔL>0.

[0059] It can be understood that the distance L2 between the tail end of the previous quick-connecting belt 5 and the opening of the mining chamber 11 is less than L1, which can make the tail end of the subsequent quick-connecting belt 5 after the subsequent quick-connecting belt 5 is connected to the previous quick-connecting belt 5 to be exposed outside the mining chamber 11, and can facilitate the connection of the movable flexible conveyor belt 7 and the quick-connecting belt 5.

[0060] In the embodiment, when the subsequent quick-connecting belt 5 is connected to the previous quick-connecting belt 5, the previous quick-connecting belt 5 is partially located on the guide rail 6.

[0061] It can be understood that when the subsequent quick-connecting belt 5 is connected to the previous quick-connecting belt 5, the previous quick-connecting belt 5 is located on the guide rail 6, and the guide rail 6 can guide the previous quick-connecting belt 5 and the subsequent quick-connecting belt 5 at the same time, thereby facilitating the accurate connection of the previous quick-connecting belt 5 and the subsequent quick-connecting belt 5.

[0062] In the embodiment, after the guide rail 6 is fixed to the bench disc 2, the distance between one end of the guide rail 6 located inside the mining chamber 11 and the opening of the mining chamber 11 is L3, where L3≥L2+L1 / 3.

[0063] Specifically, since L3≥L2+L1 / 3, the length L4 of the guide track 6 is Δ'L+L3≥Δ'L+L2+L1 / 3.

[0064] It can be understood that setting the distance L3 between the one end of the guide track 6 in the mining tunnel 11 and the opening of the mining tunnel 11 to be ≥L2+L1 / 3 can make at least 1 / 3 of the length of the previous quick connection rubber belt 5 be located on the guide track 6, which is beneficial to guarantee the reliable connection of the subsequent quick connection rubber belt 5 and the previous quick connection rubber belt 5.

[0065] In the embodiment, the guide track 6 is fixed to the benching disc 2 in advance, and the guide track 6 and the first quick connection rubber belt 5 are connected through the connecting piece.

[0066] It can be understood that connecting the guide track 6 and the quick connection rubber belt 5 through the connecting piece before the guide track 6 is fixed to the benching disc 2 can drive the guide track 6 to move synchronously through the quick connection rubber belt 5 when the heading device 4 drives the deep part of the quick connection mining strip 3 to move. Of course, the guide track 6 can also be directly driven to move synchronously with the quick connection rubber belt 5 when the quick connection rubber belt 5 moves, which is not limited herein.

[0067] In the embodiment, the open-pit mine narrow disc operation side slope coal mining equipment includes the heading device 4, the plurality of quick connection rubber belts 5, the guide track 6, and the movable flexible conveying belt 7. The plurality of quick connection rubber belts 5 are sequentially and detachably connected. The first end of the plurality of quick connection rubber belts 5 is detachably connected to the heading device 4. The tail end of the plurality of quick connection rubber belts 5 is detachably connected to the first end of the movable flexible conveying belt 7. The adjacent two quick connection rubber belts 5 are butt-jointed through the guide track 6.

[0068] The open-pit mine narrow disc operation side slope coal mining equipment in the embodiment is applied to the open-pit mine narrow disc operation side slope coal mining method described above, and has the same technical effects as the open-pit mine narrow disc operation side slope coal mining method described above, which will not be repeated herein.

[0069] In the embodiment, the open-pit mine narrow disc operation side slope coal mining equipment further includes the movable unloading piece 8. The first end of the movable unloading piece 8 is detachably connected to the tail end of the movable flexible conveying belt 7.

[0070] It should be noted that the movable unloading piece 8 arranged at the tail end of the flexible conveying belt can facilitate unloading of the coal conveyed from the upstream.

[0071] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0072] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0073] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0075] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0076] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled person in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A method for open-pit mine narrow flat disc operation side slope coal mining, characterized in that, The method comprises the following steps: S100, dividing the coal area in the side slope into a plurality of mining strips arranged in sequence; S200, arranging a tunneling device on the step flat corresponding to the first mining strip, and arranging a detachable quick connection rubber belt and a mobile flexible conveying belt in sequence behind the tunneling device, the quick connection rubber belt is arranged along the center line of the mining strip, the first end of the mobile flexible conveying belt is connected with the quick connection rubber belt, and the tail end is turned to be parallel to the trend of the step flat; S300, stopping the tunneling device after tunneling a preset distance to the deep part of the mining strip, separating the mobile flexible conveying belt from the quick connection rubber belt and moving out of the mining tunnel, then guiding the first end of the next quick connection rubber belt to the mining tunnel through a guide rail to butt against the tail end of the previous quick connection rubber belt, connecting the tail end of the next quick connection rubber belt with the mobile flexible conveying belt, and then continuing to tunnel by the tunneling device, repeating the above steps until the tunneling device tunnels to the stop line, when the tunneling device tunnels to the deep part of the mining strip, fixing the guide rail on the step flat, and making the guide rail have a length of Δ'L outside the mining tunnel, Δ'L>0, the preset distance is L0+L1+L2, wherein L0 is the length of the tunneling device, L1 is the length of the quick connection rubber belt, and L2 is the distance between the tail end of the previous quick connection rubber belt and the opening of the mining tunnel, the length of the next quick connection rubber belt outside the mining tunnel is ΔL after the next quick connection rubber belt is connected with the previous quick connection rubber belt, wherein ΔL=L1-L2, and ΔL>0, after the guide rail is fixed on the step flat, the distance between the one end of the guide rail in the mining tunnel and the opening of the mining tunnel is L3, wherein L3≥L2+L1 / 3; when the tunneling device tunnels to the deep part of the mining strip, the quick connection rubber belt is moved to the tunneling direction, and the mobile flexible conveying belt arranged in a curved manner is stretched through the quick connection rubber belt, the tail end position of the mobile flexible conveying belt is unchanged, and the conveying of coal during tunneling is completed at the same time; S400, removing the tunneling device, the quick connection rubber belt, the mobile flexible conveying 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 of claim 1, wherein, In step S200, a mobile unloading part is connected to the tail end of the mobile flexible conveying belt, and the conveying direction of the mobile unloading part is parallel to the trend of the step flat; In step S400, the mobile unloading part is removed from the previous mining strip.

3. The method of claim 1, wherein, In step S400, when the mobile flexible conveying belt is removed, the mobile flexible conveying belt is automatically separated from the quick connection rubber belt, the tunneling device is retreated to move the quick connection rubber belt in the mining tunnel out of the mining tunnel in sequence, the quick connection rubber belt is removed in sequence, and then the guide rail is removed after the tunneling device moves out of the mining tunnel.

4. The method of claim 1, wherein, The later speed jointing rubber belt and the former speed jointing rubber belt are connected when the former speed jointing rubber belt is partially located on the guide rail.

5. The method according to any one of claims 1 to 4, characterized in that, The guide rail is fixed to the step flat disc before the guide rail and the first speed jointing rubber belt are connected by a connector.

6. A mining apparatus for use in a method of strip mining of coal from a narrow flat benching operation side slope of an open cut mine as claimed in any one of claims 1 to 5, characterised in that, The tunneling equipment, the plurality of speed jointing rubber belts, the guide rail, and the movable flexible conveying belt are connected in sequence.

7. The mining apparatus according to claim 6, characterized by The movable flexible conveying belt is connected to the tail end of the movable flexible conveying belt. The movable flexible conveying belt is connected to the tail end of the movable flexible conveying belt.

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