CN112814718A - Coal mine working face crossheading advance support device and support method - Google Patents
Coal mine working face crossheading advance support device and support method Download PDFInfo
- Publication number
- CN112814718A CN112814718A CN202110298752.0A CN202110298752A CN112814718A CN 112814718 A CN112814718 A CN 112814718A CN 202110298752 A CN202110298752 A CN 202110298752A CN 112814718 A CN112814718 A CN 112814718A
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- supporting
- support
- sliding seat
- working face
- plate
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- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008093 supporting effect Effects 0.000 claims abstract description 107
- 239000002002 slurry Substances 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
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- 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a coal mine working face crossheading advance support device and a support method, which can ensure the contact area of a roof and a side support when supporting by a support inner beam and a side support inner plate and ensure the support effect, and is characterized in that a support outer beam is sleeved on the support inner beam through a fixing bolt, the support outer beam is of a box-shaped structure, the support inner beam is of a box-shaped structure, the bottom surface of the support inner beam protrudes towards the direction of the inside of the support inner beam, the bottom surface of the support outer beam is attached to the bottom surface of the support inner beam, the center of the bottom surface of the support outer beam is provided with a through hole, the center of the bottom surface of the support inner beam is provided with a grouting pipe, the grouting pipe passes through the through hole and extends to the bottom of the support outer beam, two groups of connecting lugs are respectively arranged at two ends of the bottom surface of the support outer beam, one end of a main hydraulic column is arranged between the connecting lugs of the same group, the side support outer plate is arranged on one, and the side support inner plate is arranged in the side support outer plate through a fixing bolt close to the other end of the main hydraulic column.
Description
Technical Field
The invention discloses a crossheading advance support device and a support method for a coal mine working face, relates to a device capable of carrying out advance support on a crossheading on a coal mine working face and a use method, and belongs to the technical field of coal mine equipment. In particular to a supporting device and a supporting method which can ensure the contact area of top contact and side support when supporting through supporting an inner beam and a side support inner plate and ensure the supporting effect.
Background
The working face crossheading on the mine construction refers to a roadway for people to enter and exit, arranging a conveying belt and ventilating the working face at two sides of a coal recovery working face, and the advance support refers to a supporting column which is erected in advance in a range of 20m from a coal wall of the mining face in a section of the coal mining working face crossheading, wherein the pressure increase area is influenced by mining, the traditional support structure is generally composed of a supporting beam, a hydraulic column, a fixed base and the like, and because a coal mine roadway top plate is not a complete plane, the actual contact area between the supporting beam and the roadway top plate is small, the empty top area is more, the integral roof connecting degree is low, so that the potential safety hazard in the roadway is increased, in the prior art, the supporting beam is supported by a plurality of spring supporting points to support a fit support, but the supporting structure is point-shaped support, the effective supporting area is not large, and the spring support is not firm, it is not possible to provide good support strength.
The publication number CN212508364U discloses a coal mine tunneling support device with an adjusting function, which comprises a main support plate and an expansion support plate; the top of the main supporting plate is symmetrically provided with ten local supporting circular plates, the supporting device can only carry out point-like supporting on an uneven roadway wall to enlarge the actual effective top contact area, but the point-like supporting area is still too small, and a high-strength supporting structure cannot be formed.
Notice No. CN209761475U discloses a colliery tunnelling supporting device, including the colliery entry driving machine, the fixed position between the transmission screw cover piece is connected with the bearing diagonal roof, and the equidistant fixedly connected with gyro wheel of surface at bearing diagonal roof top supports the mechanism, and the device is when strutting the spring of its top meets a top structural support unstable, and support intensity is lower industry.
Disclosure of Invention
In order to improve the situation, the invention provides a coal mine working face crossheading advance support device and a support method, which can ensure the contact area of roof contact and side support during support through supporting an inner beam and a side support inner plate and ensure the support effect.
The invention discloses a crossheading advance support device for a coal mine working face, which is realized by the following steps: the invention relates to a coal mine working face crossheading advance support device, which consists of an outer support beam, an inner support beam, grouting pipes, fixing bolts, connecting lugs, a main hydraulic column, an outer side support plate, a side grouting pipe, an inner side support plate, an auxiliary hydraulic column, a fixing sleeve, trundles, sliding seats, connecting bolts and through holes, wherein the outer support beam is sleeved on the inner support beam through the fixing bolts, the outer support beam is of a box-shaped structure, the inner support beam is of a box-shaped structure, the bottom surface of the inner support beam protrudes towards the inner side of the inner support beam, the bottom surface of the outer support beam is attached to the bottom surface of the inner support beam, the center of the bottom surface of the outer support beam is provided with the through holes, the grouting pipes are arranged in the center of the bottom surface of the inner support beam, the two groups of connecting lugs are respectively arranged on two ends of the bottom surface of the outer support beam, one end of the main hydraulic column is arranged between the connecting lugs in the same group, the outer side support beam is arranged on one side of the main hydraulic column, the side support inner plate is arranged inside the side support outer plate through a fixing bolt and is of a box-shaped structure, the side support outer plate is of a box-shaped structure, the bottom surface of the side support inner plate protrudes towards the inside of the side support inner plate, the bottom surface of the side support outer plate is attached to the bottom surface of the side support inner plate, a through hole is formed in the center of the bottom surface of the side support outer plate, a side slurry inlet pipe is arranged in the center of the bottom surface of the side support inner plate and penetrates through the through hole to extend to the other side of the main hydraulic column, the sliding seat is arranged at the other end of the main hydraulic column through a rotating lug, one end of the auxiliary hydraulic column is arranged on the sliding seat through the rotating lug, the other end of the auxiliary hydraulic column is arranged on the other side of the main hydraulic column through the rotating lug, an arc-shaped groove is formed in the bottom of the sliding seat, a connecting bolt is arranged on the sliding seat, and a;
the invention also relates to a supporting method of the coal mine working face crossheading advance supporting device, which is characterized by comprising the following steps:
1) fixing the two rails on the ground, and installing and fixing the two sliding seats in the rails through connecting bolts and side top bolts;
2) loosening the connecting bolt and the side top bolt, and moving along the track through the sliding seat so as to adjust the position of the supporting device in the roadway, thereby facilitating the excavation propulsion and supporting adjustment;
3) after the sliding seat is moved to a proper position, the connecting bolt and the side top bolt on the rail are screwed to lock and fix the position of the sliding seat;
4) the supporting inner beam and the side supporting inner plate are supported on the top plate and the side wall of the crossheading roadway by adjusting the extension and retraction of the main hydraulic column and the auxiliary hydraulic column;
5) the grouting is carried out through the grouting pipe and the side grouting pipe, and the slurry is injected into the supporting inner beam and the side supporting inner plate for filling, so that a supporting beam body perfectly attached to the roadway wall is formed for supporting, the contact area of a supporting structure and a roadway is ensured, and the potential safety hazard caused by unreal supporting is avoided.
Has the beneficial effects.
The contact area of top contact and side support during supporting can be ensured, and the supporting effect is ensured.
Secondly, the grouting filling structure after solidification has high strength, is not easy to shake and has good supporting strength.
And thirdly, the movement adjustment is convenient.
Fourthly, the side wall can be simultaneously supported.
Fifthly, the structure is simple, and the device is convenient and practical.
Sixthly, the cost is low, and the popularization is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a crossheading advance support device of a coal mine working face.
Fig. 2 is a three-dimensional structure diagram of a crossheading advance support device of a coal mine working face.
Fig. 3 is a schematic structural diagram of an outer beam supported by the crossheading advance support device of the coal mine working face.
In the attached drawings
Wherein the method comprises the following steps: the hydraulic support structure comprises an outer support beam (1), an inner support beam (2), a grouting pipe (3), a fixing bolt (4), a connecting lug (5), a main hydraulic column (6), a side support outer plate (7), a side grouting pipe (8), a side support inner plate (9), an auxiliary hydraulic column (10), a fixing sleeve (11), a caster (12), a track (13), a sliding seat (14), a connecting bolt (15), a side jacking bolt (16) and a through hole (17).
The specific implementation mode is as follows:
the invention discloses a coal mine working face crossheading advance support device, which is realized by an outer support beam (1), an inner support beam (2), a grouting pipe (3), a fixing bolt (4), a connecting lug (5), a main hydraulic column (6), an outer side support plate (7), a side grouting pipe (8), an inner side support plate (9), an auxiliary hydraulic column (10), a fixing sleeve (11), a caster (12), a sliding seat (14), a connecting bolt (15) and a through hole (17), wherein the outer support beam (1) is sleeved on the inner support beam (2) through the fixing bolt (4), the outer support beam (1) is of a box-shaped structure, the inner support beam (2) is of the box-shaped structure, the bottom surface of the inner support beam (2) protrudes towards the inner support beam (2), the bottom surface of the outer support beam (1) is attached to the bottom surface of the inner support beam (2), the center of the bottom surface of the outer support beam (1) is provided with the through hole (17), the bottom surface center of the supporting inner beam (2) is provided with a grouting pipe (3), the grouting pipe (3) passes through a through hole (17) and extends to the bottom of the supporting outer beam (1), two groups of connecting lugs (5) are respectively arranged at two ends of the bottom surface of the supporting outer beam (1), one end of a main hydraulic column (6) is arranged between the connecting lugs (5) in the same group, a side supporting outer plate (7) is arranged on one side of the main hydraulic column (6) through a fixing sleeve (11) and is close to the other end of the main hydraulic column (6), the side supporting inner plate (9) is arranged inside the side supporting outer plate (7) through a fixing bolt (4), the side supporting inner plate (9) is of a box-shaped structure, the side supporting outer plate (7) is of the box-shaped structure, the bottom surface of the side supporting inner plate (9) protrudes towards the direction inside of the side supporting inner plate (9), the bottom surface of the side supporting outer plate (7) is attached to the bottom surface of the side supporting inner plate (9), the center of the bottom surface of the side supporting outer, a side slurry inlet pipe (8) is arranged in the center of the bottom surface of the side support inner plate (9), the side slurry inlet pipe (8) penetrates through the through hole and extends to the other side of the main hydraulic column (6), a sliding seat (14) is arranged at the other end of the main hydraulic column (6) through a rotating lug, one end of an auxiliary hydraulic column (10) is arranged on the sliding seat (14) through the rotating lug, the other end of the auxiliary hydraulic column (10) is arranged at the other side of the main hydraulic column (6) through the rotating lug, an arc-shaped groove is formed in the bottom of the sliding seat (14), a connecting bolt (15) is arranged on the sliding seat (14), and a caster (12) is arranged at the bottom of the sliding seat (14);
the invention relates to a supporting method of a crossheading advance supporting device of a coal mine working face, which comprises the following steps:
1) two rails (13) are fixed on the ground, and two sliding seats (14) are installed and fixed inside the rails (13) through connecting bolts (15) and side top bolts (16);
2) the connecting bolt (15) and the side top bolt (16) are unscrewed and move along the track (13) through the sliding seat (14), so that the position of the supporting device in the roadway is adjusted, and the mining propulsion and the supporting adjustment are facilitated;
3) after the sliding seat is moved to a proper position, the connecting bolt (15) and a side top bolt (16) on the track (13) are screwed to lock and fix the position of the sliding seat (14);
4) the supporting inner beam (2) and the side supporting inner plate (9) are supported on the top plate and the side wall of the crossheading roadway by adjusting the extension and retraction of the main hydraulic column (6) and the auxiliary hydraulic column (10);
5) grouting is carried out through the grouting pipe (3) and the side grouting pipe (8), and slurry is injected into the supporting inner beam (2) and the side supporting inner plate (9) for filling, so that a supporting beam body perfectly attached to the roadway wall is formed for supporting, the contact area of a supporting structure and the roadway is ensured, and potential safety hazards caused by unreal supporting are avoided;
the bottom of the sliding seat (14) is provided with a caster (12), so that the sliding seat (14) can move in the track (13) conveniently, and the sliding seat (14) is prevented from being blocked;
the bottom surface of the inner supporting beam (2) protrudes towards the inner part of the inner supporting beam (2), so that the contact area between the inner supporting beam (2) and the top surface of a roadway during supporting can be increased, and the slurry strength can be enhanced by grouting the inner part of the inner supporting beam (2) through matching with the grouting pipe (3);
the design that the bottom surface of the supporting outer beam (1) is attached to the bottom surface of the supporting inner beam (2) can wrap and support the supporting inner beam (2) through the supporting outer beam (1), so that the supporting effect on the top surface of the roadway is further improved;
the bottom surface of the side support inner plate (9) protrudes towards the inner side of the side support inner plate (9), so that the contact area between the side support inner plate (9) and the side wall of the roadway can be increased, and the side wall of the roadway is supported while the supporting inner beam (2) is matched to support the top surface of the roadway;
the bottom surface of the side support outer plate (7) is attached to the bottom surface of the side support inner plate (9), so that the supporting effect of the side support inner plate (9) on the side wall of the roadway can be further improved;
the bottom of the sliding seat (14) is provided with an arc-shaped groove, so that the bottom of the sliding seat (14) can form an arch structure, and the stability of the sliding seat (14) in the track (13) is further improved;
the supporting inner beam (2) is matched with the side supporting inner plate (9), and meanwhile, the top plate and the side wall of the roadway are supported, so that the contact area of top contact and side support during supporting can be ensured, and the supporting effect can be ensured;
the design that the position of the sliding seat (14) is locked and fixed by screwing the connecting bolt (15) and the side top bolt (16) on the track (13) is adopted, the supporting device can be moved and adjusted by matching the sliding seat (14) with the track (13), and meanwhile, the sliding seat (14) can be fixed by matching the side top bolt (16), so that the sliding seat (14) is prevented from deviating;
the purpose of ensuring the supporting effect by ensuring the contact area of the top connection and the side support when supporting through the supporting inner beam (2) and the side support inner plate (9) is achieved.
Claims (10)
1. The utility model provides a colliery working face crossheading advance support device which characterized by: the supporting outer beam is sleeved on the supporting inner beam through a fixing bolt, the supporting outer beam is of a box-shaped structure, the supporting inner beam is of a box-shaped structure, a through hole is formed in the center of the bottom surface of the supporting outer beam, a grouting pipe is arranged in the center of the bottom surface of the supporting inner beam and penetrates through the through hole to extend to the bottom of the supporting outer beam, two groups of connecting lugs are respectively arranged at two ends of the bottom surface of the supporting outer beam, one end of a main hydraulic column is arranged between the connecting lugs in the same group, a side supporting outer plate is arranged on one side of the main hydraulic column through a fixing sleeve and is close to the other end of the main hydraulic column, a side supporting inner plate is arranged inside the side supporting outer plate through a fixing bolt, the side supporting inner plate is of a box-shaped structure and is of a box-shaped structure, a through hole is formed in the center of the bottom surface of the side supporting outer plate, a side grouting pipe is arranged in the center of the bottom surface of the side supporting inner plate, the side, one end of the auxiliary hydraulic column is arranged on the sliding seat through the rotating lug, the other end of the auxiliary hydraulic column is arranged on the other side of the main hydraulic column through the rotating lug, and the sliding seat is provided with a connecting bolt.
2. The coal mine working face crossheading advance support device according to claim 1, wherein the bottom of the support inner beam protrudes towards the inside of the support inner beam, so that the contact area between the support inner beam and the top surface of a roadway during support can be increased, and grouting is performed on the inside of the support inner beam by matching with a grouting pipe.
3. The coal mine working face gateway advance support device of claim 1, wherein the bottom surface of the support outer beam is attached to the bottom surface of the support inner beam.
4. The coal mine working face crossheading advance support device according to claim 1, characterized in that the bottom surface of the side support inner plate protrudes towards the direction inside the side support inner plate, so that the contact area between the side support inner plate and the roadway side wall can be increased, and the roadway side wall is supported while the support inner beam is matched to support the roadway top surface.
5. The crossheading advance support device for the coal mine working face according to claim 1, wherein the bottom surface of the side support outer plate is attached to the bottom surface of the side support inner plate.
6. The coal mine working face gateway advance support device of claim 1, wherein the bottom of the sliding seat is provided with an arc-shaped groove, so that the bottom of the sliding seat forms an arch-shaped structure.
7. The coal mine working face gateway advance support device according to claim 1, characterized in that the support inner beam is matched with the side support inner plate, and the design of supporting the top plate and the side wall of the roadway simultaneously can ensure the contact area of top contact and side support in the process of supporting.
8. The coal mine working face gateway advance support device of claim 1, wherein the screw-threaded connecting bolt and the side top bolt on the rail are designed to lock and fix the position of the sliding seat, so that the support device can be moved and adjusted by matching the sliding seat with the rail, and meanwhile, the sliding seat can be fixed by matching the side top bolt, and the sliding seat is prevented from being deviated.
9. The coal mine working face gateway advance support device of claim 6, wherein the bottom of the sliding seat is provided with a caster.
10. The method for supporting the coal mine working face gateway forepoling device according to claim 1, which is characterized by comprising the following steps:
1) fixing the two rails on the ground, and installing and fixing the two sliding seats in the rails through connecting bolts and side top bolts;
2) loosening the connecting bolt and the side top bolt, and moving along the track through the sliding seat so as to adjust the position of the supporting device in the roadway, thereby facilitating the excavation propulsion and supporting adjustment;
3) after the sliding seat is moved to a proper position, the connecting bolt and the side top bolt on the rail are screwed to lock and fix the position of the sliding seat;
4) the supporting inner beam and the side supporting inner plate are supported on the top plate and the side wall of the crossheading roadway by adjusting the extension and retraction of the main hydraulic column and the auxiliary hydraulic column;
5) and grouting is carried out through the grouting pipe and the side grouting pipe, and slurry is injected into the supporting inner beam and the side supporting inner plate for filling, so that a supporting beam body perfectly attached to the wall of the roadway is formed for supporting, and the contact area of the supporting structure and the roadway is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110298752.0A CN112814718B (en) | 2021-03-20 | 2021-03-20 | Advanced supporting device and method for mine working face gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110298752.0A CN112814718B (en) | 2021-03-20 | 2021-03-20 | Advanced supporting device and method for mine working face gateway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112814718A true CN112814718A (en) | 2021-05-18 |
| CN112814718B CN112814718B (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110298752.0A Active CN112814718B (en) | 2021-03-20 | 2021-03-20 | Advanced supporting device and method for mine working face gateway |
Country Status (1)
| Country | Link |
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| CN (1) | CN112814718B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616796A (en) * | 2004-12-06 | 2005-05-18 | 煤炭科学研究总院太原分院 | Suspending movable hydraulic support rack for advanced support in coal cutting roadway |
| CN2758486Y (en) * | 2005-05-26 | 2006-02-15 | 郑州煤炭工业(集团)有限责任公司 | Fast supporter moving device of 'three soft' coal layer composite mining top coal supporter series |
| CN1900486A (en) * | 2005-07-19 | 2007-01-24 | 沈阳天安矿山机械科技有限公司 | Automatic moving type tunnel advance support rack |
| CN1991131A (en) * | 2005-12-31 | 2007-07-04 | 枣庄矿业(集团)有限责任公司 | Low coal seam coverture type hydraulic support |
| CN201221370Y (en) * | 2008-01-11 | 2009-04-15 | 内蒙古伊泰集团有限公司 | Front and back containing type pillar mining specific hydraulic support |
| CN104832202A (en) * | 2015-05-15 | 2015-08-12 | 东北大学 | Hydraulic telescopic movable lining trolley for one-time lining |
| US20170138194A1 (en) * | 2014-06-25 | 2017-05-18 | China University Of Mining And Technology | Method for removing hydraulic support for solid filling coal mining |
| CN207063980U (en) * | 2017-08-12 | 2018-03-02 | 常州市市政工程设计研究院有限公司 | A kind of upper pipe working well temporary support structures |
| CN207131418U (en) * | 2017-07-14 | 2018-03-23 | 贵州理工学院 | A kind of supporting coal mine underworkings device |
| CN212614713U (en) * | 2020-07-29 | 2021-02-26 | 中铁工程装备集团有限公司 | Wall of a well installation supporting construction |
-
2021
- 2021-03-20 CN CN202110298752.0A patent/CN112814718B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616796A (en) * | 2004-12-06 | 2005-05-18 | 煤炭科学研究总院太原分院 | Suspending movable hydraulic support rack for advanced support in coal cutting roadway |
| CN2758486Y (en) * | 2005-05-26 | 2006-02-15 | 郑州煤炭工业(集团)有限责任公司 | Fast supporter moving device of 'three soft' coal layer composite mining top coal supporter series |
| CN1900486A (en) * | 2005-07-19 | 2007-01-24 | 沈阳天安矿山机械科技有限公司 | Automatic moving type tunnel advance support rack |
| CN1991131A (en) * | 2005-12-31 | 2007-07-04 | 枣庄矿业(集团)有限责任公司 | Low coal seam coverture type hydraulic support |
| CN201221370Y (en) * | 2008-01-11 | 2009-04-15 | 内蒙古伊泰集团有限公司 | Front and back containing type pillar mining specific hydraulic support |
| US20170138194A1 (en) * | 2014-06-25 | 2017-05-18 | China University Of Mining And Technology | Method for removing hydraulic support for solid filling coal mining |
| CN104832202A (en) * | 2015-05-15 | 2015-08-12 | 东北大学 | Hydraulic telescopic movable lining trolley for one-time lining |
| CN207131418U (en) * | 2017-07-14 | 2018-03-23 | 贵州理工学院 | A kind of supporting coal mine underworkings device |
| CN207063980U (en) * | 2017-08-12 | 2018-03-02 | 常州市市政工程设计研究院有限公司 | A kind of upper pipe working well temporary support structures |
| CN212614713U (en) * | 2020-07-29 | 2021-02-26 | 中铁工程装备集团有限公司 | Wall of a well installation supporting construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112814718B (en) | 2023-06-02 |
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