CN114060077A - Quick supporting device for coal mine tunnel fault crossing - Google Patents
Quick supporting device for coal mine tunnel fault crossing Download PDFInfo
- Publication number
- CN114060077A CN114060077A CN202111321240.8A CN202111321240A CN114060077A CN 114060077 A CN114060077 A CN 114060077A CN 202111321240 A CN202111321240 A CN 202111321240A CN 114060077 A CN114060077 A CN 114060077A
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- China
- Prior art keywords
- arc
- supporting
- support
- portal frame
- truss
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- 239000003245 coal Substances 0.000 title claims abstract description 33
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a coal mine roadway fault-crossing quick supporting device which comprises a portal frame, wherein the portal frame is a frame with a certain length, a plurality of arc trusses are uniformly distributed and fixed above the portal frame along the length direction, each arc truss is connected with a plurality of lifting supporting and protecting plates with uniform arcs through a supporting and adjusting assembly, and the width of each supporting and protecting plate is smaller than the distance between the arc trusses; the legs of the portal frame are telescopic support columns, and a support column hydraulic cylinder is connected between the bottom ends of the telescopic support columns and the portal frame; and a fixing screw rod is further connected between the bottom end of the telescopic strut and the portal frame, and the fixing screw rod can fixedly connect the telescopic strut and the portal frame through bolts. Compared with the prior art, the supporting plate can be expanded in rows, is large in stress area and uniform in stress, can be better attached to a roadway surface, and adjacent supporting plates and expanding plates can be connected into continuous arcs to seal the top of the roadway.
Description
Technical Field
The invention relates to the technical field of coal mine supporting equipment, in particular to a coal mine roadway fault-crossing quick supporting device.
Background
The existing coal mine roadway supporting method is a passive method, such as shed erecting, cantilever rod making, timely guniting and the like, has the disadvantages of unsafe operation, passiveness, time consumption, trouble consumption, material consumption and the like, and is also a main root cause of endangering the life safety of workers on a tunneling working face, a coal mine fault passing layer is a geological broken zone with a rock mass losing continuity and integrity, the rock is easy to collapse during tunneling, the life health of constructors is harmed, the existing supporting device is poor in stability, height adjustment cannot be carried out according to needs, installation is inconvenient, the supporting area of the existing supporting device is small, the supporting area cannot be enlarged according to needs, and the requirements cannot be met.
Among the prior art, have and to enlarge the function supporting device of area of strutting, make it can adapt to the tunnel of laminating different grade type, but the supporting device of the current function of area of expanding strutting can produce the clearance when changing the area for the supporting plate atress is inhomogeneous, and has the risk that the coal seam rubble dropped, and it and coal rock interlamellar be rigid contact, can not play the tunnel face of laminating unevenness completely, and can not in time cushion when taking place vibrations, and the structure may receive destruction. In addition, the coal rock stratum at the coal mine fault position may have the phenomenon of uneven height, and the existing supporting device can not carry out the ladder type support.
Therefore, there is a need to provide a coal mine roadway fault-crossing quick support device to solve the problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a coal mine tunnel fault-crossing rapid supporting device comprises a portal frame, wherein the portal frame is a frame with a certain length, a plurality of arc trusses are uniformly distributed and fixed above the portal frame along the length direction, each arc truss is connected with a plurality of lifting supporting plates with uniform arcs through supporting adjusting components, and the width of each supporting plate is smaller than the distance between the arc trusses;
the legs of the portal frame are telescopic support columns, and a support column hydraulic cylinder is connected between the bottom ends of the telescopic support columns and the portal frame;
and a fixing screw rod is further connected between the bottom end of the telescopic strut and the portal frame, and the fixing screw rod can fixedly connect the telescopic strut and the portal frame through bolts.
Further, preferably, the supporting adjustment assembly comprises supporting guide rails, the supporting guide rails extend along the radial direction of the arc truss and are uniformly distributed above the arc truss, supporting rods are telescopically arranged in the supporting guide rails, a through groove is formed in one surface of each supporting guide rail, a protruding sliding pin is fixed in one surface, close to the through groove, of each supporting rod, and the sliding pins penetrate through the through grooves of the supporting guide rails;
and a supporting base is fixed in one end, far away from the arc truss, of the supporting rod, and the upper portion of the supporting base is connected with a supporting plate.
Further, preferably, an adjusting sliding plate attached to the arc-shaped truss is further arranged above the arc-shaped truss, and the adjusting sliding plate and the supporting guide rail are staggered and located in the direction of the sliding pin;
a plurality of arc-shaped sliding grooves extending outwards from the bottom are formed in the adjusting sliding plate, and each arc-shaped sliding groove is connected into a corresponding sliding pin in a penetrating mode, so that the sliding pins are limited in the arc-shaped sliding grooves.
Further, as preferred, the adjustment slide is connected with the arc truss through a fixed sliding sleeve, the fixed sliding sleeve is an inverted U-shaped fixture, two sides of the bottom end of the fixed sliding sleeve are fixedly connected with the arc truss, and the adjustment slide is limited in a gap between the two sides of the fixed sliding sleeve.
Further, as preferred, the adjustment slide plate is further connected with the arc-shaped truss through an adjustment hydraulic cylinder, the adjustment hydraulic cylinder is arranged at two ends of the arc-shaped truss, the tail end of a cylinder body of the adjustment hydraulic cylinder is hinged in the arc-shaped truss, and the tail end of a piston rod of the adjustment hydraulic cylinder is hinged in the adjustment slide plate.
Further, as a preferred mode, the center between the supporting base and the supporting plate is connected through a universal hinged support.
Further, as an optimization, expansion guard plates capable of extending and stretching along the arc surfaces of the support guard plates are arranged in two sides of the support guard plates.
Further, as preferred, one end of each of the two expansion guard plates, which is far away from the supporting guard plate, is connected with the supporting guide rail through a hydraulic support rod, and two ends of each hydraulic support rod are movably connected with the expansion guard plates and the supporting guide rail through universal joints.
Furthermore, preferably, the adjusting sliding plate is attached to the fixed sliding sleeve and the arc truss through a sliding gasket, and the sliding gasket is sleeved on the periphery of the adjusting sliding plate and fixed in the fixed sliding sleeve.
Further, preferably, a pulley is provided at the bottom of the telescopic support.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the adjusting sliding plate can be driven to rotate around the circle center of the arc truss along the upper arc edge of the arc truss by adjusting the extension and retraction of the hydraulic cylinder, and the position of the sliding pin in the arc sliding chute is changed, so that the supporting rod can be extended and retracted in the supporting guide rail in a sliding manner, the lifting height of the supporting base is changed, the supporting plate is attached to the top of the fault of the coal mine tunnel, the supporting plate can adapt to coal strata with different heights in the fault, the stress area is large, the stress is uniform, and the collapse accident caused by the fault is prevented.
According to the invention, the supporting base and the supporting plate can adapt to the corner requirement in any direction through the universal hinged support, and adapt to the radial and circumferential displacement requirements to a certain degree, so that the supporting plate can be better attached to the roadway surface, the pressure can be better transferred, the universal hinged support has the performance of resisting vertical tensile force and horizontal force, the structure is ensured not to fall off when the roadway vibrates, the good damping performance is realized, the support transmits force through the spherical surface, the force necking phenomenon is avoided, and the counter forces acting on the upper structure and the lower structure are relatively uniform. According to the invention, when the supporting guard plates are pushed to rise by the supporting rods, the hydraulic support rods push the expansion guard plates to extend along the arc surfaces of the supporting plates through extension, so that gaps among a plurality of supporting plates distributed on the arc truss are filled, and the adjacent supporting guard plates and the expansion guard plates can be connected into a continuous arc line to seal the top of the roadway.
Drawings
FIG. 1 is a schematic structural view of a coal mine roadway fault-crossing quick support device;
FIG. 2 is a schematic structural view of a support adjusting assembly of a coal mine roadway fault-crossing quick support device;
FIG. 3 is a schematic diagram of a hydraulic support rod structure of a coal mine roadway fault-crossing quick support device;
FIG. 4 is a schematic view of a fixed sliding sleeve structure of a coal mine roadway cross-fault quick support device;
in the figure: 1. a gantry; 2. an arc truss; 3. a support adjustment assembly; 4. supporting the guard plate; 41. expanding the guard plate; 5. adjusting a hydraulic cylinder; 6. a telescopic strut; 7. a strut hydraulic cylinder; 8. fixing the screw rod; 9. a pulley; 31. supporting the guide rail; 32. a support bar; 33. a support base; 34. a slide pin; 35. adjusting the sliding plate; 36. an arc-shaped chute; 37. fixing the sliding sleeve; 371. a sliding liner; 38. a universal hinged support; 39. and a hydraulic support rod.
Detailed Description
Referring to fig. 1, in the embodiment of the present invention, a coal mine roadway fault-crossing quick supporting device includes a portal frame 1, where the portal frame 1 is a frame with a certain length, a plurality of arc trusses 2 are uniformly distributed and fixed above the portal frame along the length direction, each arc truss 2 is connected to a plurality of lifting supporting plates 4 with uniform arcs through a supporting adjustment assembly 3, and the width of each supporting plate 4 is smaller than the distance between the arc trusses 2;
the leg of the portal frame 1 is a telescopic strut 6, a strut hydraulic cylinder 7 is connected between the bottom end of the telescopic strut 6 and the portal frame 1, and the height of the telescopic strut 6 can be adjusted by the drive of the strut hydraulic cylinder 7;
still be connected with clamping screw 8 between telescopic support 6's bottom and portal frame 1, clamping screw 8 can be with passing through bolt fixed connection between telescopic support 6 and portal frame 1.
Referring to fig. 2, in the present embodiment, the supporting adjustment assembly 3 includes supporting guide rails 31, a plurality of supporting guide rails 31 extend along the radial direction of the arc-shaped truss 2 and are uniformly distributed above the arc-shaped truss 2, a supporting rod 32 is telescopically arranged in the supporting guide rails 31, a through groove is formed in one surface of each supporting guide rail 31, a protruding sliding pin 34 is fixed in one surface of each supporting rod 32, which is close to the through groove, and the sliding pin 34 penetrates through the through groove of the supporting guide rail 31;
and a supporting base 33 is fixed in one end of the supporting rod 32 far away from the arc truss 2, and the upper part of the supporting base 33 is connected with the supporting plate 4.
In this embodiment, an adjusting sliding plate 35 attached to the arc-shaped truss 2 is further disposed above the arc-shaped truss, and the adjusting sliding plate 35 is staggered from the supporting guide rail 31 and is located in the direction of the sliding pin 34;
a plurality of arc-shaped sliding grooves 36 extending outwards from the bottom are formed in the adjusting sliding plate 35, and each arc-shaped sliding groove 36 is penetratingly connected to the corresponding sliding pin 34, so that the sliding pin 34 is limited in the arc-shaped sliding groove 36;
that is, when the adjustment slide 35 rotates, the position of the slide pin 34 in the arc-shaped slide groove 36 is changed, so that the support rod 32 slides and extends in the support rail 31 to change the elevation height of the support base 33.
In this embodiment, the adjustment sliding plate 35 is connected with the arc-shaped truss 2 through the fixed sliding sleeve 37, the fixed sliding sleeve 37 is an inverted U-shaped fixture, two sides of the bottom end of the fixed sliding sleeve are fixedly connected with the arc-shaped truss 2, the adjustment sliding plate 35 is limited in the gap between the two sides of the fixed sliding sleeve, and the adjustment sliding plate 35 can slide along the upper arc side of the arc-shaped truss 2.
In this embodiment, the adjusting slide plate 35 is further connected with the arc-shaped truss 2 through an adjusting hydraulic cylinder 5, the adjusting hydraulic cylinders 5 are arranged at two ends of the arc-shaped truss 2, a cylinder body end of the adjusting hydraulic cylinder 5 is hinged in the arc-shaped truss 2, and a piston rod end of the adjusting hydraulic cylinder 5 is hinged in the adjusting slide plate 35;
the adjusting sliding plate 35 can be driven to rotate around the center of the arc truss 2 along the upper arc edge of the arc truss 2 by adjusting the extension and retraction of the hydraulic cylinder 5.
Referring to fig. 3, in the present embodiment, the center between the supporting base 33 and the supporting plate 4 is connected by a universal hinge support 38;
make the corner requirement of strutting the adaptable arbitrary direction between base 33 and supporting plate 4 through universal hinged-support 38 to adaptation certain degree radial, annular displacement requirement makes supporting plate 4 can laminate the tunnel face of laminating better, can transmit pressure better, and universal hinged-support 38 has the performance of anti vertical pulling force and anti horizontal force, and the structure does not drop when guaranteeing the tunnel and taking place vibrations, has good damping performance, and the support passes through spherical biography power, and the necking down phenomenon of power does not appear, and the reaction that is used in upper and lower structure is more even.
In this embodiment, expansion guard plates 41 capable of extending and retracting along the arc surfaces are disposed in two sides of the supporting guard plate 4.
In this embodiment, one ends of the two expansion guard plates 41, which are far away from the supporting guard plate 4, are respectively connected with the supporting guide rail 31 through a hydraulic support rod 39, and two ends of the hydraulic support rod 39 are respectively movably connected with the expansion guard plates 41 and the supporting guide rail 31 through universal joints;
when the supporting rods 32 push the supporting plates 4 to rise, the hydraulic supporting rods 39 push the expanding protective plates 41 to extend along the arc surfaces of the supporting plates 4 by stretching so as to fill gaps among the supporting plates 4 distributed on the arc-shaped truss 2, so that the adjacent supporting plates 4 and the expanding protective plates 41 can be connected into a continuous arc line to seal the top of the roadway, and vice versa;
moreover, the two ends of the hydraulic support rod 39 are respectively movably connected with the expanding guard plate 41 and the supporting guide rail 31 through universal joints, so that the expanding guard plate 41 can be matched with the universal hinged support 38 to enable the expanding guard plate 41 to adapt to the requirements of a corner and a certain degree of radial and circumferential displacement along with the supporting guard plate 4.
Referring to fig. 4, in the present embodiment, the adjusting sliding plate 35 is attached to the fixed sliding sleeve 37 and the arc truss 2 through a sliding liner 371, and the sliding liner 371 is sleeved on the periphery of the adjusting sliding plate 35 and fixed in the fixed sliding sleeve 37;
the sliding pad 371 is made of polytetrafluoroethylene materials, and self-lubricating materials can be generated when the sliding pad is mutually rubbed with the adjusting sliding plate 35, so that the friction force between the sliding pad and the adjusting sliding plate is reduced, and the noise and the vibration are reduced.
In this embodiment, the bottom of the telescopic support 6 is provided with a pulley 9, which facilitates the installation and position adjustment.
In specific implementation, the supporting plate 4 of the arc truss 2 can be lifted, the supporting plate 4 is lowered to the lowest position in an initial state, the diameter of the equipment is reduced, the telescopic support 6 is adjusted to the lowest position through the support hydraulic cylinder 7, and the equipment is sent to the coal mine roadway fault;
adjust flexible pillar 6 through pillar pneumatic cylinder 7 and make the arc center of arc truss 2 reach the height of roughly coinciding with the arc center at tunnel top to through adjusting every respectively and strut supporting plate 4 that adjustment assembly 3 made to correspond and laminate coal mine tunnel fault top, make it adapt to the coal seam layer of co-altitude in the fault, prevent the accident of collapsing that the fault leads to, its concrete adjustment mode is:
the adjusting slide plate 35 is driven to rotate around the center of the arc truss 2 along the upper arc edge of the arc truss 2 by the telescopic driving of the adjusting hydraulic cylinder 5, the position of the slide pin 34 in the arc chute 36 is changed, and therefore the supporting rod 32 can slide and stretch in the supporting guide rail 31, so that the lifting height of the supporting base 33 is changed;
the universal hinged support 38 rotates under stress, so that the rotation angle requirement of any direction between the supporting base 33 and the supporting plate 4 can be met, and the radial and circumferential displacement requirements of a certain degree can be met, so that the supporting plate 4 can be better attached to a roadway surface;
and when the supporting rod 32 pushes the supporting plate 4 to rise, the hydraulic supporting rod 39 pushes the expanding plate 41 to extend along the arc surface of the supporting plate 4 by stretching to fill the gap between the supporting plates 4 distributed on the arc truss 2, so that the adjacent supporting plates 4 and the expanding plate 41 can be connected into a continuous arc to seal the top of the roadway, and vice versa.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. A coal mine roadway fault-crossing rapid supporting device comprises a portal frame (1), and is characterized in that the portal frame (1) is a frame with a certain length, a plurality of arc trusses (2) are uniformly distributed and fixed above the portal frame along the length direction, each arc truss (2) is connected with a plurality of lifting supporting and protecting plates (4) with uniform arcs through a supporting and adjusting assembly (3), and the width of each supporting and protecting plate (4) is smaller than the distance between the arc trusses (2);
the legs of the portal frame (1) are telescopic struts (6), and strut hydraulic cylinders (7) are connected between the bottom ends of the telescopic struts (6) and the portal frame (1);
still be connected with clamping screw (8) between the bottom of telescopic prop (6) and portal frame (1), clamping screw (8) can be with passing through bolt fixed connection between telescopic prop (6) and portal frame (1).
2. The coal mine roadway fault-crossing rapid support device according to claim 1, wherein the support adjusting assembly (3) comprises support guide rails (31), a plurality of support guide rails (31) extend along the radial direction of the arc truss (2) and are uniformly distributed above the arc truss (2), support rods (32) are telescopically arranged in the support guide rails (31), a through groove is formed in one surface of each support guide rail (31), a raised sliding pin (34) is fixed in one surface, close to the through groove, of each support rod (32), and the sliding pins (34) penetrate through the through grooves of the support guide rails (31);
and a supporting base (33) is fixed in one end, far away from the arc truss (2), of the supporting rod (32), and the upper portion of the supporting base (33) is connected with the supporting plate (4).
3. The coal mine roadway fault-crossing quick support device according to claim 2, characterized in that an adjusting sliding plate (35) attached to the arc shape of the arc-shaped truss (2) is further arranged above the arc-shaped truss, and the adjusting sliding plate (35) is staggered from the support guide rail (31) and is positioned in the direction of the sliding pin (34);
a plurality of arc-shaped sliding grooves (36) extending outwards from the bottom are formed in the adjusting sliding plate (35), and each arc-shaped sliding groove (36) is connected into the corresponding sliding pin (34) in a penetrating manner, so that the sliding pin (34) is limited in the arc-shaped sliding groove (36).
4. The coal mine roadway fault-crossing quick support device as claimed in claim 3, wherein the adjusting sliding plate (35) is connected with the arc truss (2) through a fixed sliding sleeve (37), the fixed sliding sleeve (37) is an inverted U-shaped clamp, two sides of the bottom end of the fixed sliding sleeve are fixedly connected with the arc truss (2), and the adjusting sliding plate (35) is limited in gaps between two sides of the fixed sliding sleeve.
5. The coal mine roadway fault-crossing quick support device according to claim 3, wherein the adjusting sliding plate (35) is further connected with the arc truss (2) through an adjusting hydraulic cylinder (5), the adjusting hydraulic cylinder (5) is arranged at two ends of the arc truss (2), the tail end of a cylinder body of the adjusting hydraulic cylinder (5) is hinged in the arc truss (2), and the tail end of a piston rod of the adjusting hydraulic cylinder (5) is hinged in the adjusting sliding plate (35).
6. The coal mine roadway fault-crossing rapid support device according to claim 3, characterized in that the centers of the support bases (33) and the support plates (4) are connected through universal hinged supports (38).
7. The coal mine roadway fault-crossing quick support device as claimed in claim 6, wherein expansion guard plates (41) capable of extending and retracting along arc surfaces of the support guard plates (4) are arranged in two sides of the support guard plates.
8. The coal mine roadway fault-crossing rapid support device according to claim 7, wherein one ends of the two expansion protection plates (41) far away from the support protection plate (4) are respectively connected with the support guide rail (31) through a hydraulic support rod (39), and two ends of the hydraulic support rod (39) are respectively movably connected with the expansion protection plates (41) and the support guide rail (31) through universal joints.
9. The coal mine roadway fault-crossing quick support device according to claim 4, wherein the adjusting sliding plate (35) is attached to the fixed sliding sleeve (37) and the arc-shaped truss (2) through a sliding gasket (371), and the sliding gasket (371) is sleeved on the periphery of the adjusting sliding plate (35) and fixed in the fixed sliding sleeve (37).
10. The coal mine roadway fault-crossing quick support device as claimed in claim 1, wherein the bottom of the telescopic supporting column (6) is provided with a pulley (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321240.8A CN114060077B (en) | 2021-11-09 | 2021-11-09 | Quick supporting device for coal mine tunnel fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321240.8A CN114060077B (en) | 2021-11-09 | 2021-11-09 | Quick supporting device for coal mine tunnel fault |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114060077A true CN114060077A (en) | 2022-02-18 |
| CN114060077B CN114060077B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111321240.8A Active CN114060077B (en) | 2021-11-09 | 2021-11-09 | Quick supporting device for coal mine tunnel fault |
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| Country | Link |
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| CN (1) | CN114060077B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718614A (en) * | 2022-04-02 | 2022-07-08 | 河南理工大学 | Supporting construction that coal mine tunnel tunneled |
| CN115288758A (en) * | 2022-07-01 | 2022-11-04 | 河南龙宇能源股份有限公司车集煤矿 | Gob entry dynamic pressure area prevents equipment of strutting of roof fall |
| CN116717290A (en) * | 2023-07-31 | 2023-09-08 | 窑街煤电集团有限公司 | Underground rock burst preventing device |
| CN116753008A (en) * | 2023-08-11 | 2023-09-15 | 北京科技大学 | Large-section roadway flexible supporting equipment |
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| US3621661A (en) * | 1968-11-05 | 1971-11-23 | Gullick Dobson Ltd | Mine roof supports |
| CN210370741U (en) * | 2019-05-22 | 2020-04-21 | 贵州大学 | Scalable tunnel support bow member |
| CN210564611U (en) * | 2019-10-16 | 2020-05-19 | 王生俊 | Temporary supporting structure for coal mine excavation |
| CN211648222U (en) * | 2020-03-13 | 2020-10-09 | 田红亮 | Supporting device for coal mine tunnel |
| CN212225290U (en) * | 2020-05-11 | 2020-12-25 | 欧阳志龙 | Coal mine tunneling and supporting device |
| CN112709587A (en) * | 2021-01-20 | 2021-04-27 | 马力 | Umbrella-shaped point column type temporary supporting structure of coal mine tunnel |
| CN213269933U (en) * | 2020-08-24 | 2021-05-25 | 张奇 | Underground coal mine roadway supporting device |
| CN213928385U (en) * | 2020-11-04 | 2021-08-10 | 项斌斌 | Underground coal mine support device |
| CN113236314A (en) * | 2021-06-22 | 2021-08-10 | 霍润阁 | Colliery tunnelling supporting device with regulatory function |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3621661A (en) * | 1968-11-05 | 1971-11-23 | Gullick Dobson Ltd | Mine roof supports |
| CN210370741U (en) * | 2019-05-22 | 2020-04-21 | 贵州大学 | Scalable tunnel support bow member |
| CN210564611U (en) * | 2019-10-16 | 2020-05-19 | 王生俊 | Temporary supporting structure for coal mine excavation |
| CN211648222U (en) * | 2020-03-13 | 2020-10-09 | 田红亮 | Supporting device for coal mine tunnel |
| CN212225290U (en) * | 2020-05-11 | 2020-12-25 | 欧阳志龙 | Coal mine tunneling and supporting device |
| CN213269933U (en) * | 2020-08-24 | 2021-05-25 | 张奇 | Underground coal mine roadway supporting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718614A (en) * | 2022-04-02 | 2022-07-08 | 河南理工大学 | Supporting construction that coal mine tunnel tunneled |
| CN115288758A (en) * | 2022-07-01 | 2022-11-04 | 河南龙宇能源股份有限公司车集煤矿 | Gob entry dynamic pressure area prevents equipment of strutting of roof fall |
| CN115288758B (en) * | 2022-07-01 | 2023-03-21 | 河南龙宇能源股份有限公司车集煤矿 | Gob entry dynamic pressure area prevents equipment of strutting of roof fall |
| CN116717290A (en) * | 2023-07-31 | 2023-09-08 | 窑街煤电集团有限公司 | Underground rock burst preventing device |
| CN116753008A (en) * | 2023-08-11 | 2023-09-15 | 北京科技大学 | Large-section roadway flexible supporting equipment |
| CN116753008B (en) * | 2023-08-11 | 2023-10-27 | 北京科技大学 | Large-section roadway flexible supporting equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114060077B (en) | 2023-12-22 |
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Effective date of registration: 20240518 Address after: 454650 Jiyuan science and Technology Industrial Zone, Henan Province Patentee after: HENAN JIGAO MINING MACHINERY & ELECTRICAL CO.,LTD. Country or region after: China Address before: 272000 No.1 Xingtan Road, Qufu City, Jining City, Shandong Province Patentee before: JINING University Country or region before: China |