CN113417696A - Gob-side entry retaining lane sealing device - Google Patents
Gob-side entry retaining lane sealing device Download PDFInfo
- Publication number
- CN113417696A CN113417696A CN202110832655.5A CN202110832655A CN113417696A CN 113417696 A CN113417696 A CN 113417696A CN 202110832655 A CN202110832655 A CN 202110832655A CN 113417696 A CN113417696 A CN 113417696A
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- Prior art keywords
- sealing
- gob
- curtain
- telescopic cylinder
- roadway
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- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 239000003566 sealing material Substances 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- 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
- E21D15/58—Devices for setting props or chocks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/006—Equipment transport systems
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Structural Engineering (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention relates to a roadway side sealing device for gob-side entry retaining, belonging to the technical field of roadway sealing devices; the method aims to solve the problem that the sealing performance of the existing gob-side entry retaining side roadway and the gob is poor; the technical scheme includes that the device comprises a mine car flat plate, wherein a mechanical arm, a horizontal telescopic cylinder, a vertical telescopic cylinder, a plurality of sealing curtains and a plurality of single supporting columns are arranged on the mine car flat plate, a clamping part or a spray head is arranged at the tail end of the mechanical arm, one end of the spray head is connected with a sealing material barrel through a guide pipe, one end of the horizontal telescopic cylinder is connected with a sealing curtain bracket, a supporting rod is arranged at the upper end of the vertical telescopic cylinder, and a pressing device is arranged above the supporting rod and used for pressing the upper end of the sealing; the invention has the technical effects that the invention has high automation degree, automatically completes supporting and sealing at the same time, can prevent air leakage of gob side of the gob side entry retaining under the condition of larger deformation of the roadway, has the effect of blocking gangue and lightens the labor intensity.
Description
Technical Field
The invention belongs to the technical field of roadway sealing devices, and particularly relates to a roadway side sealing device for a gob-side entry retaining.
Background
At present, the gob-side entry retaining technology is gradually popularized in China, and the flood academicians propose a coal-pillar-free self-entry-forming mining technology and form a longwall mining 110 method (namely, only 1 working face is mined, only 1 mining roadway is required to be tunneled in advance, 0 section coal pillars are reserved), and the 'coal-pillar-free self-entry-forming mining technology' is definitely listed in a file No. 2016 (7) in 2016 (month 2), and is taken as one of key technologies for resolving surplus capacity in the coal industry.
The technology obtains better application effect in low-gas and difficult spontaneous combustion ignition coal seam mines, but has the problem of poor goaf sealing performance when the technology is applied to high-gas, coal and gas outburst and easy spontaneous combustion ignition coal seams, great potential safety hazards of goaf gas prevention and fire prevention and extinguishing are brought while the problem of stope mine pressure is solved, if measures such as air curtain shielding, slurry spraying sealing, grouting plugging, polyurethane sealing material spraying and the like of a common roadway side are adopted, ideal treatment effect cannot be obtained, and the main reason is that: 1. in the dynamic pressure influence range of mining, affected by the redistribution of stope stress, the gob side roadway side is in a dynamic movement process of gradually collapsing and compacting, a new crack is generated in a closed body, and the goaf isolation effect cannot be effectively controlled by one-time and two-time closed construction. 2. The 110-method gob-side entry retaining roof cutting pressure relief adopts an energy-gathering blasting mode, and a roof plate descending at the goaf side is broken after being impacted by blasting, so that an effective wind-shield wall is difficult to form.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a gob-side entry retaining lane sealing device, and aims to solve the problem that the existing gob-side entry retaining lane and a gob-side entry have poor sealing performance.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
Gob-side entry retaining lane sealing device, including the mine car flat board, be provided with arm, horizontal telescoping cylinder, vertical telescoping cylinder, a plurality of sealed curtain and a plurality of monomer pillar on the mine car flat board, the end of arm is provided with hold assembly or shower nozzle, hold assembly is used for getting and puts sealed curtain with the monomer pillar, there is sealed material bucket one end of shower nozzle through pipe connection, the one end of horizontal telescoping cylinder is connected with sealed curtain bracket, the upper end of vertical telescoping cylinder is provided with the bracing piece, the top of bracing piece is provided with closing device for compress tightly the upper end of sealed curtain.
Furthermore, one end of the supporting rod, which is close to the roadway wall, is connected with a fixed pulley.
Furthermore, the compressing device comprises a hollow support, a telescopic rod and a fixing device, the fixing device is used for connecting the support with the telescopic rod, a compressing piece is arranged at one end of the telescopic rod, a connecting plate is connected to one end, close to the roadway wall, of the supporting rod, the connecting plate is arranged above the supporting rod, and a gap is formed between the connecting plate and the compressing piece.
Further, the sealing material barrel is arranged on the flat plate of the mine car.
Further, the sealing curtain is a sealing curtain winding drum.
Further, the mine car wheels are arranged below the mine car flat plate.
Furthermore, a connecting buckle is arranged on the side edge of the sealing curtain.
Furthermore, one end of the sealing curtain bracket, which is close to the wall of the roadway, is provided with a groove.
Compared with the prior art, the invention has the beneficial effects that.
The invention has high automation degree, and the supporting and sealing can be automatically completed at the same time; the air leakage of the gob on the gob-side entry retaining side can be prevented under the condition of large tunnel deformation, and the effect of blocking gangue is achieved; the automatic air leakage prevention sealing device adopts an automatic net hanging and resealing process, thereby reducing the labor intensity of manual carrying of the single body.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the arrangement of the sealing device of the present invention in a gob-side entry retaining roadway;
FIG. 2 is a schematic perspective view of the sealing device of the present invention;
FIG. 3 is a schematic elevational view of the sealing device of the present invention;
FIG. 4 is a schematic sectional view A-A of FIG. 3;
the mining machine comprises a frame, a mechanical arm, a spray head, a clamp, a vertical cylinder, a support rod, a top skid, a fixed pulley, a single support column, a sealing curtain, a bottom skid, a sealing curtain bracket, a guide pipe, a sealing material barrel, a pressing sheet, a horizontal telescopic cylinder, a goaf, a top cutting pressure relief partition wall, a gob-side roadway, a roadway side roadway, a hydraulic support, a scraper conveyor, a coal mining machine, a coal body to be mined, a mining direction, a sealing device, a sealing curtain wall, a square support, a telescopic rod, a connecting plate, a supporting plate and a supporting plate, wherein the frame is 1, the mechanical arm is 6, the spray head, the clamp is 8, the vertical cylinder is 9, the supporting rod is 10, the top skid is 11, the fixed pulley is 12, the single support column is 13, the sealing curtain is 14, the bottom skid is 15, the sealing curtain bracket is 16, the guide pipe, the sealing material barrel is 19, the pressing sheet, the horizontal telescopic cylinder is 20, the horizontal telescopic cylinder, the goaf, the gob-side roadway, the sealing curtain wall is a sealing device, the sealing curtain wall is 31, the square support, the telescopic rod and the connecting plate are arranged on the mining machine.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, according to the arrangement schematic diagram of the sealing device in the roadway, under the condition of the 110-method coal mining process, the gob-side roadway 23 on one side of the gob 21 is retained, the roof cutting and pressure relief partition wall 22 is formed between the gob-side roadway 23 and the gob 21, the roof cutting and pressure relief partition wall 22 is formed in an energy-gathering blasting manner, so that cracks exist, even some parts are broken, the gob 21 and the gob-side roadway 23 are communicated through the cracks, and gas and gangue flow into the gob-side roadway 23.
As shown in figures 2-4, the sealing device of the invention comprises a flat plate 2 of a mine car, the flat plate 2 of the mine car comprises a flat plate and a frame 5 arranged on the side part of the flat plate, a mine car wheel 1 is arranged below the flat plate 2 of the mine car to facilitate the running of the flat plate 2 of the mine car, a mechanical arm 6, a horizontal telescopic cylinder 20, a vertical telescopic cylinder 9, a sealing curtain storage 4 and a single strut storage 3 are arranged on the flat plate 2 of the mine car, a clamp 8 and a spray head are arranged in front of the mechanical arm 6, the clamp 8 is used for taking and placing a sealing curtain 14 and a single strut 13, one end of the spray head is connected with a sealing material barrel 18 through a conduit 17, the sealing material barrel 18 is arranged on the flat plate 2 of the mine car, the spray head is used for spraying sealing material, one end of the horizontal telescopic cylinder 20 is connected with a horizontally arranged sealing curtain bracket 16 used for conveying the sealing curtain 14 in the sealing curtain storage 4, one end of the sealing curtain bracket 16 close to the roadway wall is provided with a groove, a structure for preventing 14 landing of sealed curtain, the upper end of vertical telescoping cylinder 9 is provided with bracing piece 10, the top of bracing piece 10 is provided with closing device, be used for compressing tightly the upper end of sealed curtain 14, a plurality of sealed curtains 14 have been placed in the sealed curtain storehouse 4, the edge of sealed curtain 14 is provided with the connector link, the both sides of sealed curtain 14 all are provided with the one deck wire netting, sealed curtain 14 is the sealed curtain reel, be convenient for depositing and expanding of sealed curtain 14, a plurality of monomer pillars 13 have been placed in the monomer pillar storehouse 3, arm 6 belongs to prior art, arm 6 can get and put sealed curtain 14 and monomer pillar 13, and can cooperate the shower nozzle to reciprocate along the gap of two adjacent sealed curtain 14 junctions, realize spouting gluey function.
The pressing device comprises a hollow square support 32, an expansion link 33 capable of extending along the support and a fixing device, the fixing device is used for connecting the square support 32 with the expansion link 33, the fixing device comprises an external thread arranged on the expansion link 33 and an internal thread arranged in the square support 32, the external thread is matched with the internal thread so as to realize the expansion of the expansion link 33 along the support, the fixing device can also be other mechanisms with expansion locking, as long as the expansion link 33 can extend along the square support 32 and be locked to a certain position, one end of the expansion link 33 is provided with a pressing sheet 19 for pressing the upper end of the sealing curtain 14, one end of the support rod 10 close to the wall of the roadway is connected with a connecting plate 34, the connecting plate 34 is arranged above the support rod 10, one end of the connecting plate 34 close to the wall of the roadway is connected with a fixed pulley 12, and a gap is arranged between the connecting plate 34 and the pressing sheet 19, for placing the upper end of the sealing curtain 14 in.
The working process is that the bottom of the sealing device is a mine car flat plate 2, the whole device runs by means of a mine car wheel 1 arranged at the bottom, when the device runs to a place where a sealing curtain 14 needs to be installed, the device stops, a clamp 8 in front of a mechanical arm 6 moves to a sealing curtain storehouse 4, a sealing curtain reel needing to be installed is clamped and placed on a sealing curtain bracket 16, a horizontal telescopic cylinder 20 enables the sealing curtain bracket 16 to be jacked to a roadway wall, one end of the sealing curtain reel is manually rolled open, the upper end of the sealing curtain reel is placed in a gap between a connecting plate 34 and a pressing sheet 19, a telescopic rod 33 is rotated to enable the sealing curtain reel to move in a direction close to the roadway wall on a square support 32, so that the pressing sheet 19 is pushed to move forwards to clamp one end of the sealing curtain reel, the other end of the sealing curtain reel naturally sags after passing around a fixed pulley 12, and the sealing curtain reel is continuously unfolded along with the extension of a vertical telescopic cylinder 9, when the upper end of the sealing curtain winding drum is conveyed to the top, the mechanical arm 6 is operated to move the front clamp 8 to the single-column warehouse 3 and clamp one single-column 13, the single-column 13 supports the left part of the stretched sealing curtain 14, during supporting, the top skid 11 and the bottom skid 15 are respectively placed above and below the single-column 13, then the mechanical arm 6 is operated to move the front clamp 8 to the single-column warehouse 3 and clamp the other single-column 13, the single-column 13 supports the right part of the stretched sealing curtain 14, during supporting, the top skid 11 and the bottom skid 15 are respectively placed above and below the single-column 13, at the moment, the installation of one sealing curtain 14 is completed, the horizontal telescopic cylinder 20 and the vertical telescopic cylinder 9 are retracted, the sealing device is moved to the installation position of the next sealing curtain 14, the process is repeated, the next sealing curtain 14 is installed, after the two sealing curtains 14 are installed, fastening a connecting buckle on the edge of the sealing curtain 14, connecting the two sealing curtains 14, replacing a clamp 8 at the front end of the mechanical arm 6, installing a sealing material spray head 7, conveying the sealing material in the sealing material cylinder to the sealing material spray head 7 along a sealing material guide pipe 17 by utilizing underground compressed air, spraying out by utilizing the sealing material spray head 7, wherein the sealing material is used for sealing a gap at the connecting part of the two adjacent sealing curtains 14, is liquid before solidification, becomes colloidal solid after solidification, and has elasticity.
(1) The prior process is a process of spraying a high polymer material on a falling rock wall, and then the iron wire mesh stop lever is hung, so that the process is complex and the sealing performance is poor.
(2) Sealed curtain 14 is cliied by two-layer wire netting, has two monomer pillars 13 to support after the installation, and two sealed curtain 14 junctions scribble the colloidal material, can prevent gob entry side collecting space area air leakage under the great condition of tunnel deformation to have the effect of blockking the waste rock.
(3) The automatic air leakage prevention sealing device 30 adopts an automatic net hanging and resealing process, thereby reducing the labor intensity of manual carrying of the single body.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The lane sealing device of the gob-side entry retaining is characterized by comprising a mine car flat plate (2), the mine car flat plate (2) is provided with a mechanical arm (6), a horizontal telescopic cylinder (20), a vertical telescopic cylinder (9), a plurality of sealing curtains (14) and a plurality of single supporting columns (13), the tail end of the mechanical arm (6) is provided with a clamping part or a spray head (7), the clamping part is used for taking and placing the sealing curtain (14) and the single strut (13), one end of the spray head (7) is connected with a sealing material barrel (18) through a guide pipe (17), one end of the horizontal telescopic cylinder (20) is connected with a sealing curtain bracket (16), the upper end of the vertical telescopic cylinder (9) is provided with a supporting rod (10), and a pressing device is arranged above the supporting rod (10) and used for pressing the upper end of the sealing curtain (14).
2. Gob side sealing device according to claim 1, characterized in that the end of the support bar (10) close to the roadway wall is connected with a fixed pulley (12).
3. The gob-side entry sealing device according to claim 1, wherein the hold-down device comprises a hollow support, a telescopic rod (33) and a fixing device, the fixing device is used for connecting the support with the telescopic rod 33, one end of the telescopic rod (33) is provided with a hold-down piece, one end of the support rod (10) close to the roadway wall is connected with a connecting plate, the connecting plate is arranged above the support rod (10), and a gap is arranged between the connecting plate and the hold-down piece.
4. The gob-side entry sealing device according to claim 1, wherein the bucket of sealing material (18) is provided on the mine car platform (2).
5. Gob side sealing device according to claim 1, characterized in that the sealing curtain (14) is a sealing curtain drum.
6. The gob-side entry sealing device according to claim 1, wherein a mine car wheel (1) is provided below the mine car slab (2).
7. Gob-side entry sealing device according to claim 1, characterized in that the side edges of the sealing curtain (14) are provided with connecting buckles.
8. Gob side sealing device according to claim 1, characterized in that the sealing curtain bracket (16) is provided with a groove at the end near the roadway wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110832655.5A CN113417696A (en) | 2021-07-22 | 2021-07-22 | Gob-side entry retaining lane sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110832655.5A CN113417696A (en) | 2021-07-22 | 2021-07-22 | Gob-side entry retaining lane sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417696A true CN113417696A (en) | 2021-09-21 |
Family
ID=77718095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110832655.5A Pending CN113417696A (en) | 2021-07-22 | 2021-07-22 | Gob-side entry retaining lane sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417696A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857006A (en) * | 2023-08-31 | 2023-10-10 | 云南滇东雨汪能源有限公司 | Mine roof-cutting gob-side entry retaining goaf quick closing device and method |
| CN117052412A (en) * | 2023-10-10 | 2023-11-14 | 太原理工大学 | Gob-side entry driving method for high-gas coal seam |
| CN116857006B (en) * | 2023-08-31 | 2024-10-22 | 云南滇东雨汪能源有限公司 | Mine roof-cutting gob-side entry retaining goaf quick closing device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857006A (en) * | 2023-08-31 | 2023-10-10 | 云南滇东雨汪能源有限公司 | Mine roof-cutting gob-side entry retaining goaf quick closing device and method |
| CN116857006B (en) * | 2023-08-31 | 2024-10-22 | 云南滇东雨汪能源有限公司 | Mine roof-cutting gob-side entry retaining goaf quick closing device and method |
| CN117052412A (en) * | 2023-10-10 | 2023-11-14 | 太原理工大学 | Gob-side entry driving method for high-gas coal seam |
| CN117052412B (en) * | 2023-10-10 | 2023-12-12 | 太原理工大学 | Gob-side entry driving method for high-gas coal seam |
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