Strip mine coal mining arrangement method
The open-pit coal mining arrangement method extends the mining line by forming and advancing extension trenches and steps, addressing equipment crowding and transportation issues to enhance production capacity and safety in open-pit mines.
Patent Information
- Application Number
- CN202411396259.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2024-12-10
AI Technical Summary
Existing open-pit mine methods focus on increasing equipment and coal recovery without considering the limited working line length, leading to equipment crowding and transportation issues, affecting production capacity and safety.
An open-pit coal mining arrangement method involving digging an extension trench at a preset depth, forming extension stripping and coal mining steps, and progressively advancing these steps to extend the mining line until reaching the coal seam floor, ensuring sufficient space for equipment operation.
The method extends the coal mining line, providing more space for equipment, improving production capacity and safety by allowing for efficient mining and transportation operations.
Smart Images
Figure CN119102629A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of open-pit mines, and in particular to an open-pit coal mining arrangement method. Background Art
[0002] In the process of rapid increase in open-pit mine production capacity, the existing methods only focus on increasing the number of equipment and ensuring the amount of recovered coal, while ignoring the limitation of the length of the working line, resulting in a large number of invested equipment crowded in a limited space, making it difficult to exert efficiency and putting great pressure on transportation roads, which not only affects the production capacity, but also increases production safety hazards. Therefore, it is urgent to develop a method to quickly increase the length of the coal mining working line based on resource endowment conditions, so as to quickly increase the production capacity of open-pit mines. Therefore, a method is needed to increase the working space of equipment in open-pit mines. Summary of the invention
[0003] The invention provides an open-pit coal mining arrangement method to solve the problem of limited working space in the open-pit mine in the prior art.
[0004] In order to solve the above problems, the present invention provides an open-pit coal mining arrangement method, comprising:
[0005] S10: digging an extension trench at a preset depth at the first coal mining step, forming an extension stripping step on a side of the extension trench close to the stripping side of the open-pit mine, and forming an extension coal mining step on a side of the extension trench close to the coal mining side of the open-pit mine;
[0006] S20: pushing the expanded stripping step toward the stripping side, and pushing the expanded coal mining step toward the coal mining side;
[0007] S30: When the distance between the extended stripping step and the extended coal mining step is greater than or equal to the set value, the operations of S10 and S20 are repeated until the extended trench is excavated to the coal seam floor of the open-pit mine.
[0008] By adopting this scheme, an extension trench is dug at the first coal mining step, and the coal mining line is extended downward. The side of the extension trench close to the stripping side of the open-pit mine forms an extension stripping step, and the side of the extension trench close to the coal mining side of the open-pit mine forms an extension coal mining step, which can carry out mining and transportation work on both sides respectively; when the distance between the extension stripping step and the extension coal mining step is greater than or equal to the set value, the extension trench is continued to be dug downward, and the operations of S10 and S20 are repeated until the extension trench is dug to the coal seam floor of the open-pit mine, further extending the length of the coal mining line of the open-pit mine, so that more equipment can be put into coal mining. Through this scheme, the length of the coal mining line is extended, and the problem of limited coal mining working space in the open-pit mine is solved.
[0009] Furthermore, the minimum flat plate width that satisfies the normal operation of mining and transportation equipment in open-pit mining is Bmin, and the distance between the side wall of the expansion groove close to the stripping side and the lowest stripping step of the open-pit mine is greater than or equal to Bmin.
[0010] Furthermore, S20 also includes:
[0011] The minimum flat plate width required for the normal operation of mining and transportation equipment in open-pit mining is Bmin. While advancing and expanding the stripping steps, the lowest stripping step and the second lowest stripping step of the open-pit mine are also advanced simultaneously until the flat plate width of the lowest stripping step and the second lowest stripping step is equal to Bmin.
[0012] Further,
[0013] The width of the flat disk during the advancement of the extended stripping step is not less than Bmin.
[0014] Furthermore, S20 also includes:
[0015] The extended coal mining bench is advanced towards the coal mining bench of the open-pit mine.
[0016] Furthermore, S30 also includes:
[0017] The minimum flat plate width required for the normal operation of mining and transportation equipment in open-pit mining is Bmin, and its set value is the sum of 2Bmin and the minimum operating width of the equipment for digging expansion trenches.
[0018] Furthermore, S30 also includes:
[0019] When the expansion trench is excavated to the bottom of the coal seam, the advancement of the expansion stripping step is stopped. The first stripping step above the coal seam is the first stripping step. The first stripping step is no longer advanced, and other stripping steps above continue to be advanced.
[0020] Furthermore, the minimum flat plate width that satisfies the normal operation of the mining and transportation equipment for open-pit mining is Bmin, and the flat plate width of the first stripping step is maintained at Bmin.
[0021] Furthermore, the open-pit coal mining arrangement method further includes, before S10:
[0022] S01: The minimum flat plate width required for the normal operation of mining and transportation equipment in open-pit mining is Bmin. The flat plate width of the lowest peeling step is pushed to Bmin to create working space for S10.
[0023] Furthermore, the open-pit coal mining arrangement method further includes, before S10:
[0024] S02: The flat plate width of the coal mining step under normal working conditions is B, and the flat plate width of the first coal mining step is increased to 2B.
[0025] By applying the technical solution of the present invention, a method for arranging coal mining in an open-pit mine is provided, comprising: S10: digging an extension trench at a preset depth at a first coal mining step, forming an extended stripping step on the side of the extension trench close to the stripping side of the open-pit mine, and forming an extended coal mining step on the side of the extension trench close to the coal mining side of the open-pit mine; S20: pushing the extended stripping step toward the stripping side, and pushing the extended coal mining step toward the coal mining side; S30: when the distance between the extended stripping step and the extended coal mining step is greater than or equal to a set value, repeating the operations of S10 and S20 until the extension trench is excavated to the coal seam floor of the open-pit mine. By adopting this scheme, an extension trench is dug at the first coal mining step, and the coal mining line is extended downward. The side of the extension trench close to the stripping side of the open-pit mine forms an extension stripping step, and the side of the extension trench close to the coal mining side of the open-pit mine forms an extension coal mining step, which can carry out mining and transportation work on both sides respectively; when the distance between the extension stripping step and the extension coal mining step is greater than or equal to the set value, the extension trench is continued to be dug downward, and the operations of S10 and S20 are repeated until the extension trench is dug to the coal seam floor of the open-pit mine, further extending the length of the coal mining line of the open-pit mine, so that more equipment can be put into coal mining. Through this scheme, the length of the coal mining line is extended, and the problem of limited coal mining working space in the open-pit mine is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0027] Figure 1 A flow chart of an open-pit coal mining arrangement method provided by an embodiment of the present invention is shown;
[0028] Figure 2 Shows Figure 1 A schematic diagram of the structure before the open-pit coal mining arrangement method is implemented;
[0029] Figure 3 Shows Figure 1 A schematic diagram of the structure of the open-pit coal mining layout method in the early stage of implementation;
[0030] Figure 4 Shows Figure 1 Structural diagram of the mid-term implementation of the open-pit coal mining layout method;
[0031] Figure 5 Shows Figure 1 Structural schematic diagram of the later stage of implementation of the open-pit coal mining layout method.
[0032] The above drawings include the following reference numerals:
[0033] 1. The first coal mining step;
[0034] 2. Expand the groove;
[0035] 3. Peeling side;
[0036] 4. Expand the peeling step;
[0037] 5. Coal mining side;
[0038] 6. Expand the coal mining bench;
[0039] 7. Peel off the bottom step;
[0040] 8. Peel off the steps of the second bottom layer;
[0041] 9. Coal seam floor. DETAILED DESCRIPTION
[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0043] like Figures 1 to 5 As shown, an embodiment of the present invention provides an open-pit coal mining arrangement method, comprising:
[0044] S10: digging an expansion trench 2 at a preset depth at the first coal mining step 1, forming an expansion stripping step 4 on the side of the expansion trench 2 close to the stripping side 3 of the open-pit mine, and forming an expansion coal mining step 6 on the side of the expansion trench 2 close to the coal mining side 5 of the open-pit mine;
[0045] S20: pushing the expanded stripping step 4 toward the stripping side 3, and pushing the expanded coal mining step 6 toward the coal mining side 5;
[0046] S30: When the distance between the extended stripping step 4 and the extended coal mining step 6 is greater than or equal to the set value, the operations of S10 and S20 are repeated until the extended trench 2 is excavated to the coal seam floor 9 of the open-pit mine.
[0047] By adopting this scheme, an extension trench 2 is excavated at the first coal mining step 1, and the coal mining work line is extended downward. An extension stripping step 4 is formed on the side of the extension trench 2 close to the stripping side 3 of the open-pit mine, and an extension coal mining step 6 is formed on the side of the extension trench 2 close to the coal mining side 5 of the open-pit mine, so that mining and transportation work can be carried out on both sides respectively; when the distance between the extension stripping step 4 and the extension coal mining step 6 is greater than or equal to the set value, the extension trench 2 is continued to be excavated downward, and the operations of S10 and S20 are repeated until the extension trench 2 is excavated to the coal seam floor 9 of the open-pit mine, further extending the length of the coal mining work line of the open-pit mine, so that more equipment can be put into coal mining work. Through this scheme, the length of the coal mining work line is extended, and the problem of limited coal mining work space in the open-pit mine is solved.
[0048] In a specific embodiment of the present invention, it is necessary to dig the expansion trench 2 according to a preset depth to create conditions for forming an expansion stripping step 4 and an expansion coal mining step 6 on both sides of the expansion trench 2, so as to avoid the depth of the expansion trench 2 being too large or too small to affect the next mining and transportation operation.
[0049] like Figures 2 to 5 As shown, during the mining and transportation operation of the open-pit mine, the minimum flat plate width that satisfies the normal operation of the mining and transportation equipment of the open-pit mine is Bmin, and the distance between the side wall of the expansion groove 2 close to the stripping side 3 and the bottom stripping step 7 of the open-pit mine is greater than or equal to Bmin.
[0050] In this way, the distance between the side wall of the expansion trench 2 close to the stripping side 3 and the bottom stripping step 7 of the open-pit mine is greater than or equal to Bmin, so that after the expansion trench 2 is excavated, there is still space to meet the normal operation of the mining and transportation equipment of the open-pit mine. After the excavation of the expansion trench 2 is completed, the width of the expansion stripping step 4 can meet the needs of the normal operation of the mining and transportation equipment of the open-pit mine, and operations can be carried out along the expansion stripping step 4.
[0051] In a specific embodiment of the present invention, Bmin refers to the minimum flat plate width that satisfies the normal operation of mining and transportation equipment in open-pit mining, and min is the minimum value.
[0052] Furthermore, during the mining and transportation operation of the open-pit mine, S20 also includes:
[0053] The minimum flat plate width required for the normal operation of mining and transportation equipment in open-pit mining is Bmin. While advancing and expanding the stripping step 4, the lowest stripping step 7 and the second lowest stripping step 8 of the open-pit mine are simultaneously advanced until the flat plate width of the lowest stripping step 7 and the second lowest stripping step 8 is equal to Bmin.
[0054] With such arrangement, while advancing the extended stripping step 4 , the lowest stripping step 7 and the second lowest stripping step 8 of the open-pit mine are advanced to a flat plate width equal to Bmin, leaving sufficient width for advancing the extended stripping step 4 .
[0055] Furthermore, if Figures 3 to 5 As shown, the width of the flat plate during the advancement of the extended stripping step 4 is not less than Bmin.
[0056] In this way, the flat width of the extended stripping step 4 during the advancement process needs to be able to meet the normal operation of the mining and transportation equipment of the open-pit mining. Therefore, during the advancement process of the extended stripping step 4, the flat width of the extended stripping step 4 is not less than Bmin.
[0057] like Figures 3 to 5 As shown, S20 also includes:
[0058] The extended coal mining step 6 is advanced towards the coal mining step of the open-pit mine.
[0059] Thus, the extended coal mining step 6 is used as a newly added coal mining working surface for coal mining operations in the open-pit mine. By adding the extended coal mining step 6, the length of the working line of the coal mining operation is extended, so that the space and output of the coal mining operation are increased during the production capacity improvement period of the open-pit mine.
[0060] Furthermore, in a specific embodiment of the present invention, S30 also includes:
[0061] The minimum flat plate width that satisfies the normal operation of mining and transportation equipment in open-pit mining is Bmin, and the set value is the sum of 2Bmin and the minimum operating width of the equipment for digging expansion trench 2.
[0062] In this way, when the distance between the extended stripping step 4 and the extended coal mining step 6 is greater than or equal to the set value, the operations of S10 and S20 are repeated until the extended trench 2 is excavated to the coal seam bottom plate 9 of the open-pit mine. The sum of 2Bmin and the minimum operating width of the equipment for excavating the extended trench 2 can satisfy the equipment for excavating the extended trench 2 to work, and when the excavation is completed, the flat plate width of the extended coal mining step 6 and the extended stripping step 4 on both sides of the extended trench 2 can reach Bmin, which can meet the requirements of the normal operation of the mining and transportation equipment for open-pit mining.
[0063] like Figure 5 As shown, S30 also includes:
[0064] When the expansion trench 2 is excavated to the coal seam bottom plate 9, the advancement of the expansion stripping step 4 is stopped, and the first stripping step above the coal seam is the first stripping step. The first stripping step is no longer advanced, and other stripping steps on the upper part continue to be advanced.
[0065] With such arrangement, when the expansion trench 2 is excavated to the coal seam bottom plate 9, the expansion trench 2 is no longer excavated downward, and the upper stripping steps except the first stripping step are continuously pushed forward.
[0066] like Figure 5As shown, the minimum flat plate width that satisfies the normal operation of the mining and transportation equipment for open-pit mining is Bmin, and the flat plate width of the first stripping step is maintained at Bmin.
[0067] By setting it in this way, the width of the flat plate of the first stripping step is kept unchanged and maintained at Bmin, so as to facilitate the next step of mining and transportation.
[0068] like Figure 1 As shown, the open-pit coal mining arrangement method further includes before S10:
[0069] S01: The minimum flat plate width that satisfies the normal operation of the mining and transportation equipment for open-pit mining is Bmin. The flat plate width of the bottom peeling step 7 is pushed to Bmin to create a working space for S10.
[0070] With such arrangement, the flat width of the bottom stripping step 7 is pushed to Bmin, leaving enough space for digging the expansion trench 2, so that there is enough space for digging the expansion trench 2 and pushing forward the expansion stripping step 4 and the expansion coal mining step 6.
[0071] like Figure 1 As shown, the open-pit coal mining arrangement method further includes before S10:
[0072] S02: The flat plate width of the coal mining step under normal working conditions is B, and the flat plate width of the first coal mining step 1 is increased to 2B.
[0073] By configuring in this way, the flat plate width of the first coal mining step 1 is increased to 2B, which can reserve sufficient space for digging the expansion trench 2 and arranging the expansion stripping step 4 and the expansion coal mining step 6.
[0074] For open-pit mines that concentrate large amounts of coal mining and small amounts of stripping in winter and concentrate large amounts of stripping and small amounts of coal mining at other times, the implementation time of the method of the present invention should be set when the stripping work is nearing completion in autumn. At this time, S01 and S02 of the method can be omitted, further improving the economic benefits of the open-pit mine.
[0075] The principle of the present invention is:
[0076] 1. An expansion trench 2 is excavated downward from the first coal mining step 1, so that an expansion stripping step 4 is formed on the side of the expansion trench 2 close to the stripping side 3, and an expansion coal mining step 6 is formed on the side of the expansion trench 2 close to the coal mining side 5, thereby extending the length of the mining and transportation working line of the open-pit mine, so that the open-pit mine can have more space for the mining and transportation equipment to work.
[0077] 2. When the distance between the extended stripping step 4 and the extended coal mining step 6 is greater than or equal to the set value, repeat the operations of S10 and S20 until the extended trench 2 is excavated to the coal seam floor 9 of the open-pit mine, and a new extended trench 2, a new extended stripping step 4 and an extended coal mining step 6 can be obtained, and the mining and transportation working line of the open-pit mine is continued to be expanded, so that the open-pit mine has more working space for mining and transportation operations.
[0078] The advantages of the present invention are:
[0079] The method of the present invention can significantly increase the length of the mining and transportation working line, especially for coal seams with a thickness of 2-3 step heights, so that the open-pit mine can achieve the purpose of extending the length of the working line without changing the surface boundary, provide space for the layout of coal mining equipment, and increase the equipment operating at the same time, thereby achieving the purpose of rapidly improving the production capacity of the open-pit mine. In a specific embodiment of the present invention, a raw coal transportation channel is also added to create conditions for increasing production capacity. During the implementation of the present invention, only the flat plate width of a small number of stripping steps is adjusted, which has little impact on other links in the open-pit mining and transportation process, has low organizational management difficulty, and is suitable for promotion and use.
[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0082] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0083] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0084] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0085] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.
Claims
1. A method for arranging coal mining in an open pit mine, characterized in that: include: S10: excavating an expansion trench (2) at a preset depth at the first coal mining step (1), forming an expansion stripping step (4) on the side of the expansion trench (2) close to the stripping side (3) of the open-pit mine, and forming an expansion coal mining step (6) on the side of the expansion trench (2) close to the coal mining side (5) of the open-pit mine; S20: pushing the extended stripping step (4) toward the stripping side (3), and pushing the extended coal mining step (6) toward the coal mining side (5); S30: When the distance between the extended stripping step (4) and the extended coal mining step (6) is greater than or equal to a set value, the operations of S10 and S20 are repeated until the extended trench (2) is excavated to the coal seam floor (9) of the open-pit mine.
2. The open-pit coal mining arrangement method according to claim 1, characterized in that: The minimum flat plate width that satisfies the normal operation of mining and transportation equipment for open-pit mining is Bmin, and the distance between the side wall of the expansion groove (2) close to the stripping side (3) and the bottom stripping step (7) of the open-pit mine is greater than or equal to Bmin.
3. The open-pit coal mining arrangement method according to claim 1, characterized in that: The S20 also includes: The minimum flat plate width that satisfies the normal operation of the mining and transportation equipment for open-pit mining is Bmin. While advancing the extended stripping step (4), the lowest stripping step (7) and the second lowest stripping step (8) of the open-pit mine are simultaneously advanced until the flat plate width of the lowest stripping step (7) and the second lowest stripping step (8) is equal to Bmin.
4. The open-pit coal mining arrangement method according to claim 3, characterized in that: The width of the flat plate during the advancement of the extended peeling step (4) is not less than Bmin.
5. The open-pit coal mining arrangement method according to claim 1, characterized in that: The S20 also includes: The extended coal mining step (6) is advanced towards the coal mining step of the open-pit mine.
6. The open-pit coal mining arrangement method according to claim 1, characterized in that: The S30 also includes: The minimum flat plate width that satisfies the normal operation of mining and transportation equipment for open-pit mining is Bmin, and the set value is the sum of 2Bmin and the minimum operating width of the equipment for digging the expansion trench (2).
7. The open-pit coal mining arrangement method according to claim 6, characterized in that: The S30 also includes: When the expansion trench (2) is excavated to the coal seam bottom plate (9), the advancement of the expansion stripping step (4) is stopped, the first stripping step above the coal seam is the first stripping step, the first stripping step is no longer advanced, and the other stripping steps above are continued to be advanced.
8. The open-pit coal mining arrangement method according to claim 7, characterized in that: The minimum flat plate width that satisfies the normal operation of mining and transportation equipment for open-pit mining is Bmin, and the flat plate width of the first stripping step is maintained at Bmin.
9. The open-pit coal mining arrangement method according to claim 1, characterized in that: The open-pit coal mining arrangement method further includes, before S10: S01: The minimum flat plate width that satisfies the normal operation of the mining and transportation equipment for open-pit mining is Bmin. The flat plate width of the bottom peeling step (7) is pushed to Bmin to create a working space for S10.
10. The open-pit coal mining arrangement method according to claim 1, characterized in that: The open-pit coal mining arrangement method further includes, before S10: S02: The flat plate width of the coal mining step in normal working condition is B, and the flat plate width of the first coal mining step (1) is increased to 2B.