CN107859526A - A kind of overhead caving hydraulic support - Google Patents
A kind of overhead caving hydraulic support Download PDFInfo
- Publication number
- CN107859526A CN107859526A CN201711277628.6A CN201711277628A CN107859526A CN 107859526 A CN107859526 A CN 107859526A CN 201711277628 A CN201711277628 A CN 201711277628A CN 107859526 A CN107859526 A CN 107859526A
- Authority
- CN
- China
- Prior art keywords
- hinged
- supporting plate
- plate
- steering
- back timber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—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
- E21D23/0034—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 comprising a goaf shield articulated to a base member
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—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
Abstract
The invention discloses a kind of overhead caving hydraulic support, steering mechanism (5) is provided with hydraulic support upper bed-plate (4), elevating mechanism (6) and borehole drill construction (7), elevating mechanism (6) is located in steering mechanism (5), borehole drill construction (7) is movably installed on elevating mechanism (6), position corresponding with the drilling rod (72) in borehole drill construction (7) is provided with through hole (11) on back timber (1), the groove (13) of fore-and-aft direction extension is provided with back timber (1) upper surface simultaneously, through hole (11) is located in groove (13), and the rear end of the groove (13) extends to back timber (1) rear end；Top plate is drilled in use, elevating mechanism (6) coordinates with borehole drill construction (7), then clogs explosive, thus explosion can be carried out to the top plate at (101) place that drills, so as to realize overhead caving.The overhead caving hydraulic support reduces worker's workload, ensures job safety, and do not influence coal-face supporting effect.
Description
Technical field
The present invention relates to a kind of hydraulic support, and in particular to a kind of overhead caving hydraulic support, belongs to coal mine machinery field.
Background technology
It is square thereafter into goaf, ordinary circumstance as coal-face is pushed ahead during coal pit mining
Under, above goaf top plate is constantly caving under gravity；But the top plate thickness above coal seam is larger or harder
When, just occurring that top plate is difficult to the phenomenon being caving by deadweight, working face pushes ahead the outstanding product constantly increase of showing up for causing top plate,
Once top plate stress reaches its ultimate strength, it will result in top plate large area while be caving, cause face roof instantaneous pressure
Suddenly increase, compression failure working face digging support apparatus, destruction work face and periphery tunnel, when serious, goaf top plate large area
It is caving compressing goaf air instantaneously to gush out, generates powerful wind-force in working face in the pit and tunnel, wipe out digging support apparatus, give
Producers cause huge injury.
In order to prevent the above situation from occurring, it is necessary to which the larger top plate of product of showing up outstanding to goaf carries out overhead caving.Generally
The overhead caving method of use has medium-length hole blasting method and hydraulic fracturing, and its specific operation process is：In face end
On the top plate of tunnel or working face position, drilling is tilted upward towards goaf direction, in hole clog explosive carry out explosion or
High pressure water destruct top plate is injected, roof caving is forced with this.
In the above-mentioned methods, if the roadway position in face end is drilled, need to be tilted towards goaf direction
Deeper hole is bored, the position in hole is reached above goaf, workload is larger；And the tunnel of approaches the working surface termination is super
Preceding stressed zone, the region need to carry out advance support, that is, generally require and carry out supporting with more individual prop, monomer supporting and
Conveying coal equipment occupies big quantity space, causes worker's work operations narrow space.And if working face position drill, due to work
Face is now more to replace individual prop to carry out supporting using hydraulic support, and hydraulic support top beam completely blocks top plate, and worker can not
Operation；And when carrying out supporting according to traditional individual prop, due to individual prop back timber can only covering part top plate, worker
Bore operation can be carried out to top plate, but individual prop supporting roof effect is poor, working face labor productivity is low, it is heavier
Want, worker is higher to danger coefficient during top plate drilling.
The content of the invention
It is an object of the invention to provide a kind of overhead caving hydraulic support, the overhead caving hydraulic support can be directly to top
Plate is drilled, and can be carried out overhead caving to outstanding dew top plate using the hydraulic support and drilling afterwards, be reduced worker's workload, protect
Job safety is demonstrate,proved, and does not influence coal-face supporting effect.
To achieve the above object, the technical solution adopted by the present invention is：A kind of overhead caving hydraulic support, including base,
Column, back timber, caving shield, connecting rod, column at least side by side two, its lower end is fixed on base, back timber is fixed in upper end
On with supporting top beam, caving shield both sides have side guard plate, the back timber is hinged and connected with side guard plate upper end, the lower end of side guard plate with
The rod hinge connection is connected, and the other end and the base of connecting rod are hinged and connected；
Steering mechanism, elevating mechanism and borehole drill construction are provided with the base；
Steering mechanism includes turning to base, hydraulic steering cylinder, turns to supporting plate, and hydraulic steering cylinder lower end is hingeably secured to institute
State and turn on front side of base, be hinged on front side of upper end and the steering supporting plate, turn to base level and be fixed on the base, thereafter
There is upraised portion side, turns to oriented lower convex portion on rear side of supporting plate lower surface, turns to the upraised portion of base with turning to branch
The downwardly convex portion of fagging lower surface is hinged and connected to form rotation section；
The elevating mechanism includes scissor component, lifting hydraulic cylinder, lifting supporting plate, and scissor component and lifting hydraulic cylinder have
Two groups, be symmetrically arranged it is described steering supporting plate on, the scissor component includes outer support bar and inner bracing piece, outer support
Bar upper end is hinged and connected with the lifting supporting plate lower surface and upper end articulated position can be relative to sliding before and after lifting supporting plate
Dynamic, lower end is hinged and connected with the steering support plate upper surface, and inner bracing piece lower end is hinged with the steering support plate upper surface
It is connected and lower end articulated position can be slid back and forth relative to supporting plate is turned to, upper end is hinged with the lifting supporting plate lower surface
It is connected, with intersecting and by being hinged and connected in the middle part of the inner bracing piece in the middle part of the outer support bar, under the lifting hydraulic cylinder
Support plate upper surface is hinged and connected, upper end is connected with the upper articulation of inner bracing piece, by extension and contraction control institute with the steering at end
State lifting supporting plate lifting；
The borehole drill construction includes rig, drilling rod, and rig activities are fixed in the lifting supporting plate, drilling rod activity installation
In rig top；
The back timber is provided with through hole, and through hole is located on the extended line of the drilling rod；Before the back timber upper surface is provided with
Rear to groove, the through hole is located in groove, and the rear end of the groove extends to top beam rear end.
Overhead caving hydraulic support of the present invention is in use, the elevating mechanism bores with borehole drill construction cooperation to top plate
Hole, explosive then is clogged to drilling, the wire connected out is exported by the through hole, and connects controller；With work towards
Preceding propulsion, overhead caving hydraulic support are moved forward, and wire is always positioned in groove, when overhead caving hydraulic support forward movement
During to home, you can explosion is carried out to the top plate of drill hole, so as to realize overhead caving.
Further, the through hole at least two, one of through hole are located at the extension during drilling rod vertical state
On line.
Preferably, the rotation section has two, is arranged symmetrically in the left and right sides of rotating mechanism；The hydraulic steering cylinder is set
Put in the centre position of the front side of the steering base.
Further, the back timber lower surface is provided with mobilizable baffle plate, and the baffle plate movably covers the through hole,
The back timber lower surface is provided with the locking mechanism with baffle fit simultaneously.
Preferably, the baffle plate side is hinged with the back timber, and baffle plate can rotate upwardly and downwardly around hinged place, the locking knot
Structure is the clamp that can engage baffle plate.
Further, the caving shield is provided with windowing, and with the windowing with movable cover plate is arranged with, the cover plate can activity
Ground covers the windowing.
Preferably, the neck supporting with cover plate is had in the windowing, the cover plate can move left and right in neck.
The borehole drill construction is located at below the back timber, and through hole corresponding with the drilling rod is provided with back timber, due to boring
Holes mechanism is located on elevating mechanism, and elevating mechanism and borehole drill construction coordinate with to being drilled above top plate, while does not influence pair
The supporting of top plate；The angle that steering mechanism can be drilled by controlling the angle of the borehole drill construction above it come controlroof, meet
Different drilling demands；The back timber is provided with groove, and groove can place the wire of explosive in connection drilling, prevent that wire from being pushed up
Plate compression failure；Through hole at least two is set, the requirement that the drilling of different angle is bored to top plate can be met；Two rotation sections
Three-legged structure is formed with the hydraulic steering cylinder to support the steering mechanism, and stability is more preferable；Baffle plate is set to prevent from pushing up
Plate is scaling-off；Windowing is set on the caving shield, is advantageous to staff and observes goaf top plate situation；The present invention it is easy to use,
Beneficial to overhead caving construction, the operation intensity of worker is reduced, and does not influence face timbering effect, worker's job safety.
Brief description of the drawings
Fig. 1 is the side structure schematic diagram of the present invention；
Fig. 2 is the enlarged diagram of steering mechanism in Fig. 1, elevating mechanism and borehole drill construction；
Fig. 3 is Fig. 2 leftschematic diagram；
Fig. 4 is the beam structure schematic diagram in Fig. 1；
Fig. 5 is the A direction views of the caving shield in Fig. 1；
Fig. 6 is operating diagram of the present invention in caving；
In figure：
1. back timber, 11. through holes, 12. baffle plates, 13. grooves；
2. caving shield, 21. windowings, 22. cover plates, 23. necks, 24. side guard plates；
3. connecting rod；
4. base；
5. steering mechanism, 51. hydraulic steering cylinders, 52. steering bases, 521, upraised portion, 53. turn to supporting plates,
531. downwardly convex portions；
6. elevating mechanism, 61. outer support bars, 62. inner bracing pieces, 63. lifting hydraulic cylinders, 64. lifting supporting plates；
7. borehole drill construction, 71. rigs, 72. drilling rods, 73. fixed plates；
8. column；
9. coal and rock, 91. coal bodies, 92. top plates；
101. drilling, 102. wires, 103. controllers.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, wherein in declarative procedure, using Fig. 1 left side before
Side, Fig. 1 right side is rear, is outwards left side perpendicular to Fig. 1 papers, is inwardly right side perpendicular to Fig. 1 papers.
As shown in figure 1, a kind of overhead caving hydraulic support, including base 4, column 8, back timber 1, caving shield 2, connecting rod 3, stand
Post 8 at least side by side two, its lower end is fixed on base 4, upper end is fixed on back timber 1 with supporting top beam 1, caving shield 2
There is side guard plate 24 both sides, and back timber 1 is hinged and connected with the upper end of side guard plate 24, and lower end and the connecting rod 3 of side guard plate 24 are hinged and connected, connecting rod
3 other end is hinged and connected with base 4；Steering mechanism 5, elevating mechanism 6 and borehole drill construction 7 are provided with base 4；
As shown in Figures 2 and 3, steering mechanism 5 includes turning to base 52, hydraulic steering cylinder 51, turns to supporting plate 53, turns to
The lower end of hydraulic cylinder 51 is hingeably secured to turn on front side of base 52, upper end is be hinged with turning to the front side of supporting plate 53, the steering water of base 52
It is flat be fixed on base 4, rear side has upraised portion 521, turn to oriented lower convex portion 531 on rear side of the lower surface of supporting plate 53,
The upraised portion 521 for turning to base 52 is hinged and connected to form rotation with turning to the downwardly convex portion 531 of the lower surface of supporting plate 53
Portion；
In working at the scene, geological condition of coal mine is complex, and top plate preservation situation is different, therefore is bored to top plate
, it is necessary to integrate various factors to determine bore angle during hole, to meet different bore angle requirements, steering mechanism 5 is set, such as schemed
2, when hydraulic steering cylinder 51 extends, turning to supporting plate 53 can turn clockwise around rotation section；Similarly, if hydraulic steering cylinder
During 51 shortening, rotation section rotate counterclockwise can be surrounded by turning to supporting plate 53；
As shown in Figures 2 and 3, elevating mechanism 6 includes scissor component, lifting hydraulic cylinder 63, lifting supporting plate 64, scissor group
Part and lifting hydraulic cylinder 63 have two groups, are symmetrically arranged on supporting plate 53 is turned to, and scissor component includes the He of outer support bar 61
Inner bracing piece 62, the upper end of outer support bar 61 is hinged and connected with lifting supporting plate 64 lower surface and upper end articulated position can be relative to
Lifting supporting plate 64 is slid back and forth, lower end is hinged and connected with turning to the upper surface of supporting plate 53, and the lower end of inner bracing piece 62 is with turning to branch
The upper surface of fagging 53 is hinged and connected and lower end articulated position can slide back and forth relative to supporting plate 53 is turned to, upper end is with lifting branch
The lower surface of fagging 64 is hinged and connected, and the middle part of outer support bar 61 intersects and by being hinged and connected with the middle part of inner bracing piece 62, lifts liquid
The lower end of cylinder pressure 63 is hinged and connected with steering supporting plate 53 upper surface, upper end is connected with the upper articulation of inner bracing piece 62, passes through
Extension and contraction control lifting supporting plate 64 lifts；
When lifting hydraulic cylinder 63 extends, because the upper end of outer support bar 61 is rearward moved relative to lifting supporting plate 64
Dynamic, the lower end of inner bracing piece 62 is moved rearwards relative to supporting plate 53 is turned to, and inner bracing piece 62 and outer support bar 61 are in vertical side
Upward angle diminishes, and causes lifting supporting plate 64 to be moved up parallel to rotational support plate；Similarly, when lifting hydraulic cylinder 63 contracts
In short-term, lifting supporting plate 64 moves down parallel to rotational support plate；Hereby it is achieved that lifting supporting plate 64 moves up and down.
As shown in Figures 2 and 3, borehole drill construction 7 includes rig 71, drilling rod 72, and lifting supporting plate is fixed in the activity of rig 71
On 64, drilling rod 72 is movably installed in the top of rig 71；In the present embodiment, lift the left and right sides in supporting plate 64 and be provided with fixed plate
73, there is fixing hole in fixed plate 73, rig 71, which coordinates, to be arranged between two fixed plates 73, has on rig 71 and fixing hole coordinates
Screw, fixing hole and screw are inserted by bolt to fix rig 71；Certainly, can also be fixed using similar other method
Rig 71, to keep rig 71 detachable, easy access and replacing；
As shown in Fig. 1 and Fig. 4, there is through hole 11 on back timber 1, through hole 11 is located on the extended line of drilling rod 72；The upper surface of back timber 1
The groove 13 of fore-and-aft direction is provided with, and through hole 11 is located in groove 13, and after the rear end of the groove 13 extends to back timber 1
End；
Set through hole 11, to allow drilling rod 72 to be directly inserted into top plate 92, because to top plate 92 drilling after, it is necessary to drill
Interior placement explosive simultaneously arranges wire, sets groove 13 that explosive wire can be allowed to be located in groove 13；Cause can overhead caving hydraulic pressure branch
In the frame course of work, as shown in figure 5, back timber 1 is in close contact with top plate 92, and interface pressure is larger, when wire is recessed
, can be in overhead caving hydraulic support movement forward in groove 13, wire does not contact with top plate 92, can be subject to crushing from wire or
Mill is ruined；
Overhead caving hydraulic support of the present invention is in use, as shown in fig. 6, the front and top of overhead caving hydraulic support are
Coal and rock 9, working face is pushed ahead, and after coal body 91 is produced, the top plate 92 of the top of coal body 91 is outstanding to be exposed, elevating mechanism 6 with
Borehole drill construction 7 coordinates to drill to top plate 92, removes drilling rod 72, then to the filling explosive of drilling 101, the wire connected out
102 are exported by through hole 11, and connect controller 103；As working face is pushed ahead, overhead caving hydraulic support is to reach
Dynamic, wire 102 is always positioned in groove 13, when overhead caving hydraulic support moves forward to home, you can to drilling
Top plate 92 at 101 carries out explosion, so as to realize overhead caving.Drilled using this overhead caving hydraulic support and caving
When, it is simple and convenient, safe and reliable, and the labor operation intensity of worker is small.
Because the drilling in top plate 92 will reach same height, when drilling vertical, the length of drilling is smaller, workload
It is small；And through hole 11 meets the requirement of different angle drilling again, therefore further, as shown in Fig. 1 and Fig. 4, through hole 11 is at least
There are two, on extended line when one of through hole 11 is located at 72 vertical state of drilling rod.
Due to support elevating mechanism 6 and borehole drill construction 7 on rotating mechanism, to ensure stability, it is preferable that such as Fig. 2 and
Shown in Fig. 3, rotation section has two, is arranged symmetrically in the left and right sides of rotating mechanism；Hydraulic steering cylinder 51 is arranged on steering base
The centre position of 52 front side；Rotational hydraulic cylinder forms triangular support configurations with rotation section, and stability is higher.
After coal mining, top plate 92 can be destroyed unavoidably, slag-off phenomenon occur, during to prevent that through hole 11 is not used,
Debris drops working face from through hole 11, and therefore, further, the lower surface of back timber 1 is provided with mobilizable baffle plate 12, the baffle plate 12
Through hole 11 is movably covered, the lower surface of back timber 1 is provided with the locking mechanism coordinated with baffle plate 12 simultaneously.
Preferably, the side of baffle plate 12 is be hinged with back timber 1, and baffle plate 12 can rotate upwardly and downwardly around hinged place, and locking mechanism is can
Engage the clamp of baffle plate 12, it is simple in construction, cost is low, is hardly damaged using this design.
Because in underground, worker is in the front side job execution of caving shield 2, and the rear side of caving shield 2 is goaf, for convenience of technology
Personal observations' goaf top plate 92 is caving situation, and further, caving shield 2 is provided with windowing 21, with the windowing 21 be arranged with can
Removable cover 22, the cover plate 22 can actively cover windowing 21.
Preferably, the neck 23 supporting with cover plate 22 being had in windowing 21, cover plate 22 can move left and right in neck 23,
It is simple in construction, be hardly damaged.
Claims (7)
1. a kind of overhead caving hydraulic support, including base (4), column (8), back timber (1), caving shield (2), connecting rod (3), column
(8) at least side by side two, its lower end is fixed on base (4), upper end is fixed on back timber (1) with supporting top beam (1), cover
There is side guard plate (24) guard beam (2) both sides, and the back timber (1) is hinged and connected with side guard plate (24) upper end, the lower end of side guard plate (24)
It is hinged and connected with the connecting rod (3), the other end and the base (4) of connecting rod (3) are hinged and connected；It is characterized in that：
Steering mechanism (5), elevating mechanism (6) and borehole drill construction (7) are provided with the base (4)；
Steering mechanism (5) includes turning to base (52), hydraulic steering cylinder (51), turns to supporting plate (53), hydraulic steering cylinder (51)
Lower end is hingeably secured on front side of the steering base (52), upper end and steering supporting plate (53) front side are be hinged, turns to base
(52) level is fixed on the base (4), rear side has upraised portion (521), is turned on rear side of supporting plate (53) lower surface
Oriented lower convex portion (531), the upraised portion (521) of base (52) is turned to turning to the downward convex of supporting plate (53) lower surface
Portion (531) are played to be hinged and connected to form rotation section；
The elevating mechanism (6) includes scissor component, lifting hydraulic cylinder (63), lifting supporting plate (64), scissor component and lifting
Hydraulic cylinder (63) has two groups, is symmetrically arranged on the steering supporting plate (53), and the scissor component includes outer support bar
(61) and inner bracing piece (62), outer support bar (61) upper end is hinged and connected and upper end with described lifting supporting plate (64) lower surface
Articulated position can slide back and forth relative to lifting supporting plate (64), lower end is hinged phase with described steering supporting plate (53) upper surface
Even, inner bracing piece (62) lower end is hinged and connected with described steering supporting plate (53) upper surface and lower end articulated position can be relative to
Steering supporting plate (53) is slid back and forth, upper end is hinged and connected with described lifting supporting plate (64) lower surface, the outer support bar
(61) middle part with the inner bracing piece (62) in the middle part of intersect and by being hinged and connected, the lower end of the lifting hydraulic cylinder (63) and
Supporting plate (53) upper surface is hinged and connected, upper end is connected with the upper articulation of inner bracing piece (62) for the steering, passes through flexible control
Make lifting supporting plate (64) lifting；
The borehole drill construction (7) includes rig (71), drilling rod (72), and the lifting supporting plate (64) is fixed in rig (71) activity
On, drilling rod (72) is movably installed in rig (71) top；
The back timber (1) is provided with through hole (11), and through hole (11) is located on the extended line of the drilling rod (72)；The back timber (1)
Upper surface is provided with the groove (13) of fore-and-aft direction, and the through hole (11) is located in groove (13), and the rear end of the groove (13)
Extend to back timber (1) rear end.
A kind of 2. overhead caving hydraulic support according to claim 1, it is characterised in that：The through hole (11) at least two
It is individual, on extended line when one of through hole (11) is located at the drilling rod (72) vertical state.
A kind of 3. overhead caving hydraulic support according to claim 1, it is characterised in that：The rotation section has two, right
Claim the left and right sides for being arranged in rotating mechanism；The hydraulic steering cylinder (51) is arranged in the front side of the steering base (52)
Between position.
A kind of 4. overhead caving hydraulic support according to claims 1 to 3 any one, it is characterised in that：The back timber
(1) lower surface is provided with mobilizable baffle plate (12), and the baffle plate (12) movably covers the through hole (11), the back timber
(1) lower surface is provided with the locking mechanism coordinated with baffle plate (12) simultaneously.
A kind of 5. overhead caving hydraulic support according to claim 4, it is characterised in that：Baffle plate (12) side and institute
It is be hinged to state back timber (1), baffle plate (12) can rotate upwardly and downwardly around hinged place, and the locking mechanism is the card that can engage baffle plate (12)
Plate.
A kind of 6. overhead caving hydraulic support according to claims 1 to 3 any one, it is characterised in that：The shielding
Beam (2) is provided with windowing (21), and with the windowing (21) with movable cover plate (22) is arranged with, the cover plate (22) can be covered actively
The windowing (21).
A kind of 7. overhead caving hydraulic support according to claim 6, it is characterised in that：Had on the windowing (21)
The neck (23) supporting with cover plate (22), the cover plate (22) can move left and right in neck (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277628.6A CN107859526A (en) | 2017-12-06 | 2017-12-06 | A kind of overhead caving hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277628.6A CN107859526A (en) | 2017-12-06 | 2017-12-06 | A kind of overhead caving hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107859526A true CN107859526A (en) | 2018-03-30 |
Family
ID=61705247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711277628.6A Withdrawn CN107859526A (en) | 2017-12-06 | 2017-12-06 | A kind of overhead caving hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859526A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374654A (en) * | 2019-07-31 | 2019-10-25 | 神华神东煤炭集团有限责任公司 | A kind of hydraulic support device and the processing method with hydraulic support device processing coal mine roof fall |
| CN110878675A (en) * | 2018-09-05 | 2020-03-13 | 徐州中新机械科技有限公司 | Portable roof drilling equipment |
| CN114542151A (en) * | 2022-01-12 | 2022-05-27 | 中南大学 | Coal face gas extraction and roof treatment method |
-
2017
- 2017-12-06 CN CN201711277628.6A patent/CN107859526A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878675A (en) * | 2018-09-05 | 2020-03-13 | 徐州中新机械科技有限公司 | Portable roof drilling equipment |
| CN110374654A (en) * | 2019-07-31 | 2019-10-25 | 神华神东煤炭集团有限责任公司 | A kind of hydraulic support device and the processing method with hydraulic support device processing coal mine roof fall |
| CN114542151A (en) * | 2022-01-12 | 2022-05-27 | 中南大学 | Coal face gas extraction and roof treatment method |
| CN114542151B (en) * | 2022-01-12 | 2022-11-11 | 中南大学 | Coal face gas extraction and roof treatment method |
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