CN110984985A - Intelligent working face hydraulic support automatic adjustment coal mining process - Google Patents
Intelligent working face hydraulic support automatic adjustment coal mining process Download PDFInfo
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- CN110984985A CN110984985A CN201911071901.9A CN201911071901A CN110984985A CN 110984985 A CN110984985 A CN 110984985A CN 201911071901 A CN201911071901 A CN 201911071901A CN 110984985 A CN110984985 A CN 110984985A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/12—Control, e.g. using remote control
Abstract
The utility model provides an intelligent working face hydraulic support automatic adjustment coal mining technology, scrapes trigger and includes first end and second end, includes the following step: s1, when the fully mechanized mining face moves upwards and downwards, a hydraulic support lags a rear roller of a coal mining machine, only a moving frame does not push and slide, the coal mining machine returns a cutter, the coal mining machine moves to a position close to a snake-shaped section, the hydraulic support corresponding to the snake-shaped section pushes and slides to form a first pushing and sliding section, the first pushing and sliding section is distributed in an inclined mode, the length of the first pushing and sliding section is larger than that of the coal mining machine, and the hydraulic support between the first pushing and sliding section and a first end sequentially pushes and slides along the direction from a second end to the first end; s2, obliquely cutting a coal cutter to the first end until the end; and S3, sequentially pushing the hydraulic support between the first pushing and sliding section and the second end along the direction towards the second end, and cutting coal towards the second end by the coal mining machine. By adjusting the coal mining process, the hydraulic support of the working face is automatically adjusted, the need of human intervention is avoided, the phenomena of upward movement and downward movement of the support of the working face are avoided, and the intelligent unmanned working face is smoothly mined.
Description
Technical Field
The invention relates to the field of coal mining, in particular to an intelligent working face hydraulic support automatic adjustment coal mining process.
Background
At present, mechanical coal mining is converted into intelligent coal mining, but coal cutting is carried out according to a traditional coal mining process, a hydraulic support of a coal face is frequently moved upwards and downwards due to the geological conditions of the working face, the coal flow trend and the like, so that the intelligent coal mining is hindered, a lot of human intervention still exists in the coal cutting process, few-person and unmanned coal mining cannot be effectively realized, and great difficulty is brought to intelligent remote operation.
Disclosure of Invention
The invention aims to provide an intelligent working face hydraulic support automatic adjustment coal mining process, when a working face moves upwards and slides downwards, the coal mining process is adjusted to realize automatic adjustment of the working face hydraulic support, so that the need of human intervention is avoided, the phenomena of upward movement and downward movement of the working face support are solved, and the intelligent unmanned working face is smoothly mined.
The embodiment of the invention is realized by the following technical scheme:
the utility model provides an intelligent working face hydraulic support automatic adjustment coal mining technology for combine and adopt the working face to take place to scurry, glide, scrape the trigger and include first end and second end, the snakelike section of coal wall is in between first end and the second end, includes following step:
s1, when the fully mechanized mining face moves upwards and downwards, a hydraulic support lags behind a rear roller of a coal mining machine, only a moving frame does not push and slide, the coal mining machine returns a cutter, the coal mining machine moves to a position close to a snake-shaped section and is located outside the area of a first end and the snake-shaped section, the hydraulic support at the position corresponding to the snake-shaped section pushes and slides to form a first push and slide section, the first push and slide section is obliquely distributed and is longer than the coal mining machine, and the hydraulic support between the first push and slide section and the first end sequentially pushes and slides along the direction from the second end to the first end;
s2, obliquely cutting a coal cutter to the first end until the end;
s3, sequentially pushing the hydraulic support between the first pushing and sliding section and the second end to slide along the direction towards the second end, and cutting coal towards the second end by a coal mining machine;
s4, sweeping the bottom of the coal mining machine towards the first end, and cutting the triangular coal at the position of the second end.
Further, the method also comprises the following steps:
s5, cleaning float coal from the coal mining machine to a second end until the end;
s6, pushing and sliding a hydraulic support close to the second end to form a second pushing and sliding section, wherein the second pushing and sliding section is distributed in an inclined mode and is longer than the coal mining machine, the hydraulic supports between the first end and the second pushing and sliding section are pushed and slid, the coal mining machine is arranged between the second end and the second pushing and sliding section, the coal mining machine obliquely advances to the second pushing and sliding section and moves to a position between the first end and the second pushing and sliding section, and the hydraulic support corresponding to the second pushing and sliding section moves along the direction towards the second end;
s7, pushing and sliding the second pushing and sliding section, the brackets between the second pushing and sliding section and the second end to the scraper conveyor to be linearly distributed, and moving the coal mining machine to the second end and cutting the triangular coal to the end head;
s8, sweeping the bottom of the coal mining machine to the first end, and cutting triangular coal at the position of the second end;
s9, cleaning float coal from the coal mining machine to the second end until the end.
Further, during normal operation, the coal mining machine cuts coal from the second end to the first end, then sweeps the bottom from the first end to the second end, and then clears the coal from the second end to the first end.
Further, in the step S1, the cutter of the coal mining machine is returned, the coal mining machine moves to a position close to the snake-shaped section, and the distance between the coal mining machine and the first end is 20-30 m;
in step S6, the shearer is arranged between the second end and the second pushing and sliding section, and the shearer is 20-30m away from the second end.
Further, the first end is the one end that is close to the coal seam elevation low, and the second end is the one end that is close to the coal seam elevation high.
Furthermore, the coal mining machine is provided with a first roller and a second roller, the first roller and the second roller are arranged on two sides of the coal mining machine along the length direction of the scraper conveyor, the first roller is arranged close to the second end, and the second roller is arranged far away from the second end;
the direction perpendicular to the length direction of the scraper conveyor, the direction perpendicular to the plane of the coal seam to be mined and the direction towards the plane of the coal seam to be mined is a first direction, the opposite direction of the first direction is a second direction, and the first roller and the second roller are movably arranged on the coal mining machine along the first direction and the second direction;
in steps S1, S4, S5, S8 and S9, the first roller and the second roller are both arranged far away from the plane of the coal seam to be mined;
in steps S2 and S6, the second roller moves to a position close to the plane of the coal seam to be mined along the first direction;
in steps S3 and S7, the second roller moves to a position far away from the coal seam plane to be mined along the second direction, and the first roller moves to a position close to the coal seam plane to be mined along the first direction.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: when the working face has upward movement and downward sliding, the automatic adjustment of the hydraulic support of the working face is realized by adjusting the coal mining process, the manual intervention is avoided, the upward movement and downward sliding phenomena of the support of the working face are avoided, the labor force is reduced, and the intelligent unmanned working face is realized for smooth mining.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic process view of S1-S4 providing an intelligent face hydraulic support auto-adjustment coal mining process according to an embodiment of the present invention;
fig. 2 is a process schematic diagram of S5 to S9 providing an intelligent working face hydraulic support automatic adjustment coal mining process according to an embodiment of the present invention.
Icon: 100-scraper, 110-first end, 120-second end, 130-first push-slide section, 140-second push-slide section, 200-shearer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, an intelligent working face hydraulic support automatic adjustment coal mining process for a fully mechanized coal mining face to jump up and slide down, a scraper 100 includes a first end 110 and a second end 120, a serpentine section of a coal wall is located between the first end 110 and the second end 120, and includes the following steps:
s1, when the fully mechanized mining face moves upwards and downwards, a hydraulic support lags behind a rear roller of a coal mining machine 200, only a moving support does not push and slide, the coal mining machine 200 returns, the coal mining machine 200 moves to a position close to a snake-shaped section and is located outside the area of a first end 110 and the snake-shaped section, the hydraulic support corresponding to the snake-shaped section pushes and slides to form a first pushing and sliding section 130, the first pushing and sliding section 130 is distributed in an inclined mode and is longer than the coal mining machine 200, and the hydraulic support between the first pushing and sliding section 130 and the first end 110 sequentially pushes and slides along the direction from a second end 120 to the first end 110;
s2, obliquely cutting and feeding the coal cutter 200 to the first end 110 until the end;
s3, the hydraulic supports between the first push-slide section 130 and the second end 120 sequentially push and slide along the direction towards the second end 120, and the coal mining machine 200 cuts coal towards the second end 120;
s4, sweeping the bottom of the coal mining machine 200 towards the first end 110, and cutting triangular coal at the position of the second end 120;
s5, cleaning float coal from the coal mining machine 200 to the second end 120 until the end;
s6, pushing and sliding the hydraulic supports close to the second end 120 to form a second pushing and sliding section 140, wherein the second pushing and sliding section 140 is obliquely distributed and is longer than the coal mining machine 200, the hydraulic supports between the first end 110 and the second pushing and sliding section 140 are pushed and slid, at the moment, the coal mining machine 200 is placed between the second end 120 and the second pushing and sliding section 140, the coal mining machine 200 obliquely advances a cutter towards the second pushing and sliding section 140 and moves to a position between the first end 110 and the second pushing and sliding section 140, and the hydraulic supports corresponding to the second pushing and sliding section 140 move along the direction towards the second end 120;
s7, pushing and slipping the second pushing and slipping section 140, the second pushing and slipping section 140 and the second end 120 until the supports between the second pushing and slipping section 140 and the second end 120 are distributed linearly to the scraper conveyor 100, and moving the coal cutter 200 to the second end 120 and cutting triangular coal to the end head;
s8, sweeping the bottom of the coal mining machine 200 towards the first end 110, and cutting triangular coal at the position of the second end 120;
s9, the coal mining machine 200 cleans float coal towards the second end 120 until the end.
Referring to fig. 1 and 2, the coal cutting refers to that the upper roller cuts top coal and the lower roller cuts bottom coal in the coal mining machine; sweeping the bottom means that both cylinders cut the bottom coal.
By adopting the process, the defects that the intellectualization is influenced and the labor intensity is increased due to artificial regulation can be overcome, and the problem that the end of the original set length has part of coal which can not be dug to cause end blockage when the working surface moves up and down is solved.
In the normal operation of the present embodiment, referring to fig. 1, the three steps above S1 in fig. 1 are the steps during the normal operation, specifically, the coal mining machine 200 cuts coal from the second end 120 to the first end 110, then sweeps the bottom from the first end 110 to the second end 120, and then cleans the coal from the second end 120 to the first end 110.
Referring to fig. 1 and 2, the left end and the right end of the drawing are the first end 110 and the second end 120 of the scraper 100, respectively, for explanation: when the working surface moves up and slides down, S1 in fig. 1 is adopted, and in S1, the first pushing-sliding section 130 is formed, at this time, the hydraulic support of the section to the right of the first pushing-sliding section 130 does not move first, and the hydraulic support of the section to the left of the first pushing-sliding section 130 pushes and slides.
The length of the scraper 100 is constant, and at the first end 110, i.e. at the leftmost end in the figure, the scraper 100 will be moved to the right, resulting in the presence of no scraper 100 body at the support of the leftmost end, due to the inclined first push-slip section 130. As the hydraulic brackets of the first push-slide section 130 are sequentially pushed and slid rightward in step S3, the portion of the flight 100 on the inclined first push-slide section 130 is sequentially moved rightward compared to the excess portion of the straight flight 100. After the scraper 100 at the rightmost side (the second end 120) in the drawing is pushed back, the scraper 100 moves rightwards integrally for a certain distance compared with the state of the scraper 100 when the working face moves upwards and downwards, so that the coal mine at the end which cannot be excavated due to the upwards movement and the downwards movement in the fully mechanized mining face is excavated by the coal mining machine 200. When the face support is automatically adjusted, the scraper 100 is moved as a whole, and the shearer 200 moves to the right in the drawing to cut through the coal wall.
Referring to fig. 2, steps S4 to S9 show the coal fully-mechanized coal mining process during normal operation.
Referring to fig. 1 and 2, when the normal operation starts, the shearer 200 cuts coal from the second end 120 to the first end 110, then sweeps the bottom from the first end 110 to the second end 120, and then clears the coal from the second end 120 to the first end 110; when the working face moves upwards and downwards, the whole scraper machine shifts through S1-S3, and then coal is normally cut through S4-S9. S9, returning to the normal coal cutting process from the second end 120 to the first end 110.
Further, the shearer 200 returns in step S1, the shearer 200 moves to a position close to the serpentine section, and the shearer 200 is 20-30m away from the first end. When the cutter is returned, the cutter is not adjusted to move upwards or downwards. And the hydraulic support corresponding to the coal mining machine is moved and pushed to slide behind the support at the first end 110. In step S6, the shearer 200 is positioned between the second end 120 and the second push-slide section 140, and the shearer 200 is 20-30m from the second end.
Preferably, the shearer 200 is about 30m from the first end in step S1, and the shearer 200 is about 30m from the second end in step S6. From the standpoint of carriage, push-slip and travel speed of the shearer 200.
Further, the first end 110 is near the low elevation end of the coal seam, and the second end 120 is near the high elevation end of the coal seam. That is, in fig. 1 and 2, the left end is a low elevation end, and the right end is a high elevation end.
Further, the coal mining machine 200 is provided with a first roller and a second roller, the first roller and the second roller are arranged on two sides of the coal mining machine 200 along the length direction of the scraper conveyor 100, the first roller is arranged close to the second end 120, and the second roller is arranged far away from the second end 120. The direction perpendicular to the length direction of the scraper conveyor 100, the direction perpendicular to the plane of the coal seam to be mined and the direction set towards the plane of the coal seam to be mined is a first direction, the opposite direction of the first direction is a second direction, and the first roller and the second roller are movably arranged on the coal mining machine 200 along the first direction and the second direction.
In steps S1, S4, S5, S8 and S9, the first roller and the second roller are both arranged far away from the plane of the coal seam to be mined; in steps S2 and S6, the second roller moves to a position close to the plane of the coal seam to be mined along the first direction; in steps S3 and S7, the second roller moves to a position far away from the coal seam plane to be mined along the second direction, and the first roller moves to a position close to the coal seam plane to be mined along the first direction.
In steps S3 to S4, since the first roller moves to abut against the coal seam at the second end 120, the second roller cannot move to a position close to the second end 120, triangular coal is formed under the coal mining machine, and the triangular coal at the second end position is cut through step S4.
Accordingly, at S7 to S8, the triangle coal is also formed at the second end 120 position, and the triangle coal at the second end position is cut through step S8.
More specifically, in fig. 1 and 2, when the downward sliding problem is solved, the downward sliding is performed from the first end to the second end, and the first end is the end facing outward in the mine hole compared with the second end. When solving the problem of channeling, the second end is the end facing outwards in the mine hole compared with the first end.
The process of the invention realizes automatic adjustment of the hydraulic support of the working face, avoids human intervention, can effectively solve the problem of upward movement and downward movement of the support of the intelligent working face, effectively promotes intelligent unmanned mining, has high reliability and strong flexibility, reduces labor force, improves safety guarantee and improves production efficiency; meanwhile, the coal mining process is suitable for most of two-way coal cutting modes and has wide popularization value.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an intelligent working face hydraulic support automatic adjustment coal mining technology for combine and adopt the working face to take place to scurry, glide, scrape the trigger and include first end and second end, the snakelike section of coal wall in first end with between the second end, its characterized in that includes following step:
s1, when the fully mechanized mining face moves upwards and downwards, a hydraulic support lags a rear roller of a coal mining machine, only a moving frame does not push and slide, a cutter of the coal mining machine returns, the coal mining machine moves to a position close to the snake-shaped section and is located outside the area of the first end and the snake-shaped section, the hydraulic support at the position corresponding to the snake-shaped section pushes and slides to form a first push and slide section, the first push and slide section is distributed in an inclined mode, the length of the first push and slide section is larger than that of the coal mining machine, and the hydraulic support between the first push and slide section and the first end sequentially pushes and slides along the direction from the second end to the first end;
s2, obliquely cutting and feeding the coal mining machine to the first end until the end;
s3, sequentially pushing and sliding the hydraulic support between the first pushing and sliding section and the second end along the direction towards the second end, and cutting coal towards the second end by the coal mining machine;
and S4, sweeping the bottom of the coal mining machine towards the first end, and cutting the triangular coal at the position of the second end.
2. The intelligent working face hydraulic support automatic adjustment coal mining process according to claim 1, further comprising the steps of:
s5, cleaning float coal from the coal mining machine to the second end until the end;
s6, pushing and sliding hydraulic supports close to the second end to form a second pushing and sliding section, wherein the second pushing and sliding section is distributed in an inclined mode and is longer than a coal mining machine, the hydraulic supports between the first end and the second pushing and sliding section are pushed and slid, the coal mining machine is arranged between the second end and the second pushing and sliding section at the moment, the coal mining machine carries out beveling on the second pushing and sliding section and moves to a position between the first end and the second pushing and sliding section, and the hydraulic supports corresponding to the second pushing and sliding section move along the direction towards the second end;
s7, pushing and slipping the second pushing and slipping section, the second pushing and slipping section and the support between the second end and the second end until the scraper conveyor is linearly distributed, and moving the coal mining machine to the second end and cutting triangular coal to the end head;
s8, sweeping the bottom of the coal mining machine towards the first end, and cutting triangular coal at the position of the second end;
and S9, cleaning float coal from the coal mining machine to the second end until the end.
3. The intelligent working face hydraulic support automatic adjustment coal mining process according to claim 1, characterized in that: during normal operation, the coal mining machine cuts coal from the second end to the first end, then sweeps the bottom from the first end to the second end, and then cleans and floats the coal from the second end to the first end.
4. The intelligent working face hydraulic support automatic adjustment coal mining process according to claim 2, characterized in that:
returning the shearer at the step S1, wherein the shearer moves to a position close to the snake-shaped section and is 20-30m away from the first end;
in step S6, the shearer is disposed between the second end and the second pushing and sliding section, and the shearer is 20-30m away from the second end.
5. The intelligent working face hydraulic support automatic adjustment coal mining process according to claim 1, characterized in that: the first end is for being close to the low one end of coal seam elevation, the second end is for being close to the high one end of coal seam elevation.
6. The intelligent working face hydraulic support automatic adjustment coal mining process according to claim 2, characterized in that:
the coal mining machine is provided with a first roller and a second roller, the first roller and the second roller are arranged on two sides of the coal mining machine along the length direction of the scraper conveyor, the first roller is arranged close to the second end, and the second roller is arranged far away from the second end;
the direction perpendicular to the length direction of the scraper conveyor, the direction perpendicular to the plane of the coal seam to be mined and the direction towards the plane of the coal seam to be mined is a first direction, the opposite direction of the first direction is a second direction, and the first roller and the second roller are movably arranged on the coal mining machine along the first direction and the second direction;
in steps S1, S4, S5, S8 and S9, the first roller and the second roller are both arranged far away from the plane of the coal seam to be mined;
in steps S2 and S6, the second roller moves to a position close to the plane of the coal seam to be mined along the first direction;
in steps S3 and S7, the second roller is moved in the second direction to a position away from the plane of the coal seam to be mined, and the first roller is moved in the first direction to a position close to the plane of the coal seam to be mined.
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