CN115355027A - Combine and adopt working face combined supporting construction - Google Patents
Combine and adopt working face combined supporting construction Download PDFInfo
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- CN115355027A CN115355027A CN202211032953.7A CN202211032953A CN115355027A CN 115355027 A CN115355027 A CN 115355027A CN 202211032953 A CN202211032953 A CN 202211032953A CN 115355027 A CN115355027 A CN 115355027A
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- 238000010276 construction Methods 0.000 title description 2
- 238000005065 mining Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 239000003245 coal Substances 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 230000003247 decreasing effect Effects 0.000 description 9
- 238000000605 extraction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
The application provides a combine and adopt working face combined supporting structure relates to colliery working face and struts technical field, including basic bracket component and enhancement bracket component. An empty frame section is arranged between the first basic hydraulic support and the second basic hydraulic support; hydraulic monomer equidistance sets up inside the section of makeing somebody's turn to do, has pi shaped steel roof beam to set up respectively in there being hydraulic monomer top, and has to support on the pi shaped steel roof beam to have the log lower surface, and has the log both ends to set up respectively in first basic hydraulic support and the basic hydraulic support upper surface of second, and the wire netting is located there is the log upper surface. In the fully-mechanized mining process, generally, the support of a working face is a hydraulic support, and the invention provides a combined support of a hydraulic monomer matched with a pi-shaped steel beam and a basic support assembly. When the length of the working face changes, the support does not need to be increased or reduced, and the support of the working face can be adjusted by increasing or reducing the empty frame sections.
Description
Technical Field
The application relates to the field of coal mine working face supporting, in particular to a combined supporting structure of a fully mechanized coal mining working face.
Background
In recent years, with the continuous release of coal capacity, newly built or expanded and reconstructed mines and coal mining working faces can select a fully mechanized mining process with higher capacity and higher efficiency. Although the fully mechanized mining process is mature, not all geological conditions are suitable for the fully mechanized mining process, especially under the geological conditions of unstable fluctuation of coal seams and large inclination angle, the advantages of the fully mechanized mining process are difficult to be exerted due to the factors of large tonnage, large quantity, poor maneuverability and the like of fully mechanized mining equipment, and even disasters such as natural ignition of a goaf and the like can be caused by slow push mining.
Due to the characteristic of coal formation, the coal seam occurrence condition is common in the underground mining process, so that the support problem is firstly considered and solved for the fully mechanized mining working face under the geological conditions of uncertain coal seam fluctuation and large inclination angle and complexity.
Due to the fact that the coal seam fluctuates irregularly, and a fully mechanized mining face under large inclination angle complex geological conditions needs to be added or reduced in the stoping process. The tonnage of the hydraulic support is heavy, usually three or forty tons, and the hydraulic support can only be installed or removed at the safety outlets at two ends of a working face, because the safety outlets at the two ends have limited space, obvious pressure and no system installation and transportation condition. Basically, the hydraulic support is installed and dismantled by matching the single body with the chain block, which is extremely unsafe and easy to cause safety accidents.
The support of the fully mechanized mining process is a hydraulic support supporting top plate, and before the hydraulic support is installed, the number of the installation supports needed by a working face is calculated according to the length of the open cutting hole and the support width. The length of the working face of the nearly horizontal coal seam (the dip angle is less than 8 degrees) is basically unchanged from the beginning to the end of the mining, so that the number of the supports is not changed in the mining process, and the supports do not need to be increased or reduced. However, for a working face with an unstable coal seam and a complex geological condition with a large inclination angle, the length of the working face is also increased due to the fact that the inclination angle of the working face is increased; on the contrary, the inclination angle of the working surface is reduced, and the length is shortened; the length of the working face is changed continuously in the stoping process, and the hydraulic support supported by the working face needs to be increased or decreased in time and in short time.
Disclosure of Invention
In order to overcome the existing defects, the embodiment of the application provides a combined supporting structure of a fully mechanized mining face, which can solve the problems that the coal seam fluctuates indefinitely, the inclination angle of the working face is large, and the length of the working face is also long; on the contrary, the inclination angle of the working surface is reduced, and the length is shortened; the length of the working face is changed continuously in the extraction process, and the hydraulic support supported by the working face needs to be increased or decreased in time and duration.
The technical scheme adopted by the embodiment of the application for solving the technical problem is as follows: a combined supporting structure of a fully mechanized coal mining face comprises a foundation support assembly and a reinforcing support assembly.
The basic support assembly comprises a transition support, a first basic hydraulic support and a second basic hydraulic support, the first basic hydraulic support is arranged on one side of the transition support, the second basic hydraulic support is arranged on the other side, far away from the transition support, of the first basic hydraulic support, and an empty support section is arranged between the first basic hydraulic support and the second basic hydraulic support; strengthen the bracket component and include hydraulic pressure monomer, pi shaped steel roof beam, log and wire netting, all hydraulic pressure monomer equidistance set up in inside the vacant rack section, all pi shaped steel roof beam sets up respectively in all hydraulic pressure monomer top, and all support on the pi shaped steel roof beam all the log lower surface, and all the log both ends set up respectively in first basic hydraulic support with second basic hydraulic support upper surface, the wire netting is located all the log upper surface.
In a specific embodiment, strengthen the bracket component and still include the stopper, all the stopper equidistance set up in on the pi shaped steel roof beam, and all the stopper is used for spacing the log.
In a specific implementation scheme, arc-shaped grooves matched with the bottoms of the logs are formed in the upper surfaces of all the limiting blocks.
In a specific implementation scheme, the arc-shaped groove is internally provided with an inserting block, and the bottom of the log is fixed with a slot matched with the inserting block.
In a particular embodiment, all of the logs are semi-circular in shape.
The embodiment of the application has the advantages that:
1. in the fully-mechanized mining process, generally, the support of a working face is a hydraulic support, and the invention provides a combined support of a hydraulic monomer matched with a pi-shaped steel beam and a basic support assembly. When the length of the working face changes, the support does not need to be increased or decreased, and the support of the working face can be adjusted by increasing or decreasing the empty frame sections.
2. The combined supporting structure is brand new, high in operability, fast, convenient and high in safety.
3. The device is suitable for the working face under the geological conditions of unstable fluctuation and large inclination angle of the coal bed, can only increase or decrease the empty frame section along with the change of the length of the working face, and does not need to increase or decrease the hydraulic supports.
Drawings
Fig. 1 is a schematic view of combined supporting arrangement of a fully mechanized mining face provided by an embodiment of the application;
FIG. 2 is a schematic view of a combined supporting structure of a fully mechanized mining face provided by an embodiment of the application;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of the present application;
FIG. 4 is a cross-sectional view taken along line B-B of an embodiment of the present application;
fig. 5 is an enlarged view of fig. 4 at C according to an embodiment of the present disclosure.
In the figure: 10-a foundation support assembly; 110-a transition support; 120-a first primary hydraulic mount; 130-an empty section; 140-a second primary hydraulic mount; 20-a reinforcing brace assembly; 210-hydraulic monomer; a 220-pi shaped steel beam; 230-log; 240-wire netting; 250-a limiting block; 251-arc-shaped groove.
Detailed Description
According to the technical scheme in the embodiment of the application, in order to solve the problem that the working face of the geological condition with the coal seam with uncertain fluctuation and large inclination angle is complicated, the length of the working face is also lengthened due to the fact that the inclination angle of the working face is enlarged; on the contrary, the inclination angle of the working surface is reduced, and the length is shortened; the length of the working face is changed continuously in the extraction process, the length is long, the time is short, and the hydraulic support supported by the working face needs to be increased and decreased, and the general idea is as follows:
referring to fig. 1-5, a combined supporting structure for a fully mechanized coal mining face includes a foundation support assembly 10 and a reinforcing support assembly 20.
Wherein, basic bracket component 10 can be strutted the colliery is fully mechanized, strengthens bracket component 20 and has supplied the normal circulation rate of working face, reduces loaded down with trivial details support mounting or demolish the process for the productivity release of working face has further improved the output of working face.
Referring to fig. 1, 2 and 3, the base bracket assembly 10 includes a transition bracket 110, a first basic hydraulic bracket 120 and a second basic hydraulic bracket 140, wherein the first basic hydraulic bracket 120 is disposed on one side of the transition bracket 110, the second basic hydraulic bracket 140 is disposed on the other side of the first basic hydraulic bracket 120 away from the transition bracket 110, and specifically, the widths of the first basic hydraulic bracket 120 and the second basic hydraulic bracket 140 are the same. An empty rack section 130 is arranged between the first basic hydraulic support 120 and the second basic hydraulic support 140, and specifically, the width of the empty rack section 130 is the same as that of the first basic hydraulic support 120; when the working face is used for mining, because the inclination angles of coal seams are different, the fall of an upper roadway and a lower roadway is changed along with the advancing of the working face, and the length of the working face is changed during mining. Therefore, in the initial stage of stoping design, the maximum length and the minimum length in the stoping process of the working face can be calculated according to the actually revealed upper and lower roadway positions. The number of the second basic hydraulic supports 140 to be installed is calculated according to the minimum length of the working face, and is the base number of the installation of the working face supports. The empty section 130 to be reserved is then calculated based on the maximum and minimum working surface lengths.
Referring to fig. 1, 2, 3, 4 and 5, the reinforcing bracket assembly 20 includes hydraulic units 210, pi-shaped steel beams 220, logs 230 and wire netting 240, all the hydraulic units 210 are equidistantly disposed inside the empty frame section 130, all the pi-shaped steel beams 220 are respectively disposed at the top ends of the hydraulic units 210, the pi-shaped steel beams 220 support the lower surfaces of the logs 230, two ends of the logs 230 are respectively disposed on the upper surfaces of the first basic hydraulic bracket 120 and the second basic hydraulic bracket 140, and the wire netting 240 is disposed on the upper surfaces of all the logs 230. According to the number of the empty rack sections 130, the hydraulic units 210 are matched with the pi-shaped steel beams 220+ basic supports for combined supporting, the empty rack sections 130 are only increased or decreased along with the extraction of the working face, and the supports do not need to be increased or decreased. Two first basic hydraulic supports 120, two second basic hydraulic supports 140 and two adjacent second basic hydraulic supports 140 are spaced by a support distance; the round timber 230 under the wire mesh 240 of the empty frame section 130 supports the top plate, two ends of the round timber 230 are lapped on the two first basic hydraulic supports 120, the second basic hydraulic support 140 and the adjacent second basic hydraulic support 140, each end is lapped by 0.5 meter, and the adjacent supports are fully utilized to strengthen the supporting strength of the section of the top plate. The empty frame section 130 supports the round timber 230 by using the hydraulic monomer 210 to match with the pi-shaped steel beam 220, and the shed distance of the hydraulic monomer 210 is as follows: the top beam interval between each outermost n-shaped steel beam 220 of each pair of sheds and the top beams of the first basic hydraulic support 120, the second basic hydraulic support 140 and the adjacent second basic hydraulic support 140 is 0.3 m; row pitch of the hydraulic monomers 210: 0.6 m; 4. managing the five rows, namely, one in five times; pitch of logs 230: 0.6 m; the angle of attack to the mountain: 2 to 6 degrees; a beam crossing mode: the crossing beam with the forward moving partition frame takes a step.
The reinforcing bracket assembly 20 further includes limiting blocks 250, all the limiting blocks 250 are disposed on the pi-shaped steel beam 220 at equal intervals, and the limiting blocks 250 are used for limiting the round logs 230. The upper surfaces of all the limit blocks 250 are provided with arc-shaped grooves 251 matched with the bottoms of the logs 230. Wherein, place the log 230 inside the arc groove 251, realize the spacing to the log 230, prevent that the log 230 from shifting.
An insert block is arranged in the arc-shaped groove 251, and a slot matched with the insert block is fixed at the bottom of the log 230. Through the cooperation of the insert block and the slot, the round log 230 is more stable inside the arc-shaped slot 251.
All logs 230 are semi-circular in shape.
When this application uses: when the working face is used for stoping, because the inclination angles of the coal seam are different, the fall of the upper roadway and the lower roadway changes along with the advancing of the working face, so that the length of the working face changes during stoping. Therefore, in the initial stage of stoping design, the maximum length and the minimum length in the stoping process of the working face can be calculated according to the actually revealed upper and lower roadway positions. And calculating the number of the second basic hydraulic supports 140 to be installed according to the minimum length of the working face, wherein the number is the base number of the installation of the working face supports. The empty section 130 to be reserved is then calculated based on the maximum and minimum working surface lengths. According to the number of the empty frame sections 130, the hydraulic units 210 are matched with the pi-shaped steel beams 220+ basic supports for combined supporting, only the empty frame sections 130 are increased or decreased along with the extraction of the working face, and the supports do not need to be increased or decreased. Two first basic hydraulic supports 120, two second basic hydraulic supports 140 and two adjacent second basic hydraulic supports 140 are spaced by a support distance; the round timber 230 under the wire mesh 240 of the empty frame section 130 supports the top plate, two ends of the round timber 230 are lapped on the two first basic hydraulic supports 120, the second basic hydraulic support 140 and the adjacent second basic hydraulic support 140, each end is lapped by 0.5 meter, and the adjacent supports are fully utilized to strengthen the supporting strength of the section of the top plate. The hollow section 130 supports the round timber 230 by using the hydraulic monomer 210 to match with the pi-shaped steel beam 220, and the shed distance of the hydraulic monomer 210 is as follows: the top beam interval between each outermost n-shaped steel beam 220 of each pair of sheds and the top beams of the first basic hydraulic support 120, the second basic hydraulic support 140 and the adjacent second basic hydraulic support 140 is 0.3 m; row pitch of hydraulic monomers 210: 0.6 m; 4. managing in five rows, namely, one in five times; pitch of log 230: 0.6 m; the angle of attack to the mountain: 2 to 6 degrees; a beam crossing mode: the cross beam with the forward moving shelf takes a step.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (5)
1. A combined supporting structure of a fully mechanized coal mining face is characterized by comprising
The basic support assembly comprises a transition support, a first basic hydraulic support and a second basic hydraulic support, wherein the first basic hydraulic support is arranged on one side of the transition support, the second basic hydraulic support is arranged on the other side, far away from the transition support, of the first basic hydraulic support, and an empty support section is arranged between the first basic hydraulic support and the second basic hydraulic support;
strengthen the bracket component, including hydraulic pressure monomer, pi shaped steel roof beam, log and wire netting, all hydraulic pressure monomer equidistance set up in inside the vacant rack section, all pi shaped steel roof beam sets up respectively in all hydraulic pressure monomer top, and all support on the pi shaped steel roof beam all the log lower surface, and all the log both ends set up respectively in first basic hydraulic support with second basic hydraulic support upper surface, the wire netting is located all the log upper surface.
2. The combined supporting structure for the fully mechanized mining face of claim 1, wherein the reinforcing bracket assembly further comprises limiting blocks, all the limiting blocks are arranged on the pi-shaped steel beam at equal intervals, and all the limiting blocks are used for limiting the round timber.
3. The combined supporting structure for the fully mechanized mining face of claim 2, wherein the upper surfaces of the limiting blocks are provided with arc-shaped grooves matched with the bottoms of the logs.
4. The combined supporting structure for the fully mechanized mining face of claim 3, wherein an insert block is arranged inside the arc-shaped groove, and a slot matched with the insert block is fixed at the bottom of the log.
5. The combined supporting structure of the fully mechanized mining face of claim 4, wherein all the logs are semi-circular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211032953.7A CN115355027A (en) | 2022-08-26 | 2022-08-26 | Combine and adopt working face combined supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211032953.7A CN115355027A (en) | 2022-08-26 | 2022-08-26 | Combine and adopt working face combined supporting construction |
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| Publication Number | Publication Date |
|---|---|
| CN115355027A true CN115355027A (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211032953.7A Pending CN115355027A (en) | 2022-08-26 | 2022-08-26 | Combine and adopt working face combined supporting construction |
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| CN (1) | CN115355027A (en) |
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2022
- 2022-08-26 CN CN202211032953.7A patent/CN115355027A/en active Pending
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