CN211777501U - Support for preventing and treating rock burst of coal mine - Google Patents

Abstract

The utility model discloses a prevention and cure colliery rock burst support, including striding roof beam, steel sheet, roof and regional strutting arrangement, the welding has the steel sheet on striding the roof beam, and is provided with the roof above the steel sheet, is provided with a plurality of regional strutting arrangements of group on the roof, inserts on the roof and is equipped with a plurality of pivots, and the welding of the center department top of pivot has the jack fixed plate, and is fixed with the jack on the jack fixed plate, and stretching out of jack is served and is fixed with main roof. Has the advantages that: through being provided with steel sheet and roof above the span beam, utilize its self elasticity to prop up jack support rock mass, be convenient for cushion and fall partly impact force, the radian that utilizes the roof can prop up sunken and convex rock mass, be convenient for prop up the jack and support the below at irregular rock mass, be convenient for carry on local or multi-angle simultaneously and support, through being provided with detachable extension plate on main roof plate, an area for increasing main roof plate, be convenient for improve supporting force and scope, possess stronger adaptability.

Description

Support for preventing and treating rock burst of coal mine

Technical Field

The utility model relates to a colliery equipment technical field specifically is a prevent and treat colliery rock burst support.

Background

Rock burst refers to a phenomenon in which a deep portion of an underground mine or a region having a high structural stress causes a sudden failure in an adjacent hollow rock mass. This phenomenon is also known as rock burst. This occurs because the strain energy adjacent to the volume accumulation of the empty rock is suddenly and violently released all together, causing brittle fracture of the rock mass like an explosion. In coal mine production, a support is usually adopted to jack up a rock mass in a roadway for protection, and the support is an indispensable device in coal mining.

The prevention and cure colliery rock burst support that uses at present only can prop up the rock mass at tunnel top, does not possess effectual cushioning effect, because tunnel top rock mass is irregular, has protruding concave, the fixed or smooth roof in top is difficult to hug closely on the rock mass to can't incline or the pertinence supports local rock mass, and the roof size is fixed, can not increase the support area according to the demand, thereby it is little to lead to it to be minister the area, the position is fixed, the adaptability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to the above-mentioned problem that exists at present, provide a prevention and cure colliery rock burst support, through be provided with steel sheet and roof in the roof beam top, utilize its self elasticity to prop up jack support rock mass, be convenient for cushion and fall partly impact force, through be provided with the regional strutting arrangement of multiunit on the roof, the radian that utilizes the roof can prop up sunken and convex rock mass, be convenient for prop up the jack and support the below at irregular rock mass, be convenient for simultaneously carry out local or multi-angle and support, through be provided with detachable extension plate on the main roof, an area for increasing the main roof, be convenient for improve supporting force degree and scope, possess stronger adaptability, thereby solve not enough and the defect that prior art exists.

In order to realize the purpose, the utility model discloses a technical scheme is:

a support for preventing and treating coal mine rock burst comprises a bridge with a rectangular structure, a steel plate with an arc-shaped structure, a top plate with an arc-shaped structure and an area supporting device, wherein the steel plate is welded on the bridge, the top plate is arranged above the steel plate, the jack is used for jacking, supporting and buffering, a plurality of groups of regional supporting devices are arranged on the top plate, each regional supporting device comprises a rotating shaft, a jack fixing plate with a square structure, a jack and a main top plate with a rectangular structure, the rotating shafts are inserted on the top plate, the jack fixing plate is welded above the center of each rotating shaft and is convenient to fix and rotate, the jacks are fixed on the jack fixing plates, the jack is used for jacking and supporting a rock body, the extending end of the jack is fixedly provided with the main top plate, and the two ends of the main top plate are provided with the lengthened plates to increase the supporting area.

Preferably, the top plate is provided with a leak groove with a long strip-shaped structure, a plurality of reinforcing plates are welded in the leak groove, and bearings are arranged at the joints of the rotating shaft and the top plate.

Preferably, the steel sheet with the bedplate of cuboid structure has all been welded at the both ends of roof, just the steel sheet with the roof both ends the bedplate is together to it is fixed through the second threaded rod that is equipped with.

Preferably, both ends of the main top plate are provided with grooves, the lengthened plate and the grooves are provided with three threaded holes, and the lengthened plate is fixed on the grooves through first threaded rods.

Preferably, the supports are welded to the bottoms of the two ends of the span beam, and the bottoms of the two ends of the steel plate are welded to the span beam through the I-shaped steel.

Preferably, the top plate is made of steel, and the steel plate and the top plate have certain elasticity.

Since the technical scheme is used, the beneficial effects of the utility model are that:

1. the steel plate and the top plate are arranged above the cross beam, and the jack is elastically supported by the steel plate and the top plate to support a rock mass, so that part of impact force can be buffered conveniently;

2. the top plate is provided with a plurality of groups of regional supporting devices, and the radian of the top plate can be used for supporting a concave rock body and a convex rock body, so that the jack can be conveniently jacked to be supported below an irregular rock body, and meanwhile, the local or multi-angle supporting can be conveniently carried out;

3. through being provided with detachable extension plate on main roof for increase main roof's area, be convenient for improve supporting force and scope, possess stronger adaptability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view after the top plate is turned over in the present invention;

fig. 3 is a schematic structural diagram of the middle top plate of the present invention;

fig. 4 is a schematic structural view of the main top plate of the present invention;

FIG. 5 is an enlarged schematic view of A of FIG. 1;

fig. 6 is an enlarged schematic structural diagram of B in fig. 1 according to the present invention.

In the figure: 1. a span beam; 2. a steel plate; 3. a top plate; 4. a leak groove; 5. a reinforcing plate; 6. a rotating shaft; 7. Fixing a jack plate; 8. a jack; 9. a main top plate; 10. a lengthening plate; 11. a groove; 12. a threaded hole; 13. a first threaded rod; 14. a support; 15. i-shaped steel; 16. a seat plate; 17. a second threaded rod.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the accompanying drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.

Referring to fig. 1-6, the utility model provides a technical scheme, a support for preventing coal mine rock burst comprises a bridge 1 with a rectangular structure, a steel plate 2 with an arc structure, a top plate 3 with an arc structure and a regional support device, wherein the steel plate 2 is welded on the bridge 1, the top plate 3 is arranged above the steel plate 2 for supporting and buffering, the top plate 3 is provided with a plurality of groups of regional support devices, each regional support device comprises a rotating shaft 6, a jack fixing plate 7 with a square structure, a jack 8 and a main top plate 9 with a rectangular structure, a plurality of rotating shafts 6 are inserted on the top plate 3 for driving the jack 8 to rotate, the jack fixing plate 7 is welded above the center of the rotating shaft 6, the jack 8 is fixed on the jack fixing plate 7 for supporting a rock mass, the main top plate 9 is fixed on the extending end of the jack 8, the two ends of the main top plate 9 are provided with extension plates 10, the supporting area is increased.

Preferably, the top plate 3 is provided with a leak groove 4 with a long strip structure, a plurality of reinforcing plates 5 are welded in the leak groove 4, and the connecting part of the rotating shaft 6 and the top plate 3 is provided with a bearing, so that the rotation is convenient.

Preferably, the bedplate 16 of cuboid structure is all welded at the both ends of steel sheet 2 and roof 3, and the bedplate 16 at steel sheet 2 and roof 3 both ends is together to it is fixed through the second threaded rod 17 that is equipped with, be convenient for firmly fix and adjust the orientation of radian.

Preferably, both ends of the main top plate 9 are provided with grooves 11, the elongated plate 10 and the grooves 11 are provided with three threaded holes 12, and the elongated plate 10 is fixed on the grooves 11 through first threaded rods 13. Is convenient for quick connection and fixation.

Preferably, the supports 14 are welded at the bottoms of the two ends of the span beam 1, and the bottoms of the two ends of the steel plate 2 are welded on the span beam 1 through the arranged I-shaped steel 15, so that the firmness and the supporting strength are improved.

Preferably, the top plate 3 is made of steel, and the steel plate 2 and the top plate 3 have certain elasticity, so that the force unloading and buffering are facilitated.

In this embodiment, the use process of the support for preventing coal mine rock burst is as follows:

the method comprises the following steps: prop the support in the tunnel, when the tunnel top is sunken, fixed with the bellying of roof 3 up to utilize second threaded rod 17 fixed with seat 16, thereby form the support whole, when the tunnel top is protruding, fixed with the concave surface of roof 3 up.

Step two: the jack 8 is swung, the main top plate 9 is aligned to a position to be supported, and the inclined and vertical support is performed, and then the projecting end of the jack 8 is lifted to be press-fixed, thereby supporting the rock at the top.

Step three: when the local supporting area needs to be increased, the upper elongated plate 10 is installed and fixed by the first threaded rod 13, so that the supporting area is increased.

Step four: when the rock mass at tunnel top warp, jack 8 pushes down, jack 8 will push down the force transfer roof 3 and steel sheet 2 on, utilize roof 3 and steel sheet 2's elasticity to cushion, avoid pressure too big phenomenon that causes steel sheet 2 and roof 3 rupture in the twinkling of an eye, when the rock of jack-up takes place to drop, jack 8 of adjustable support, it supports to have set up the support position once more, need not remove whole support and can carry out local adjustment, and convenient and fast possesses stronger adaptability.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a prevention and cure colliery rock burst support, includes span beam (1) of rectangle structure, steel sheet (2) of arc structure, roof (3) and the regional strutting arrangement of arc structure, its characterized in that: stride the welding on roof beam (1) steel sheet (2), just steel sheet (2) top is provided with roof (3), be provided with a plurality of groups on roof (3) regional strutting arrangement, regional strutting arrangement includes pivot (6), the jack fixed plate (7) of square structure, jack (8) and the main roof (9) of rectangle structure, it is equipped with a plurality of to insert on roof (3) pivot (6), the welding of the center department top of pivot (6) has jack fixed plate (7), just be fixed with on jack fixed plate (7) jack (8), stretching out of jack (8) is served and is fixed with main roof (9), the both ends of main roof (9) all are provided with extension board (10).

2. The support for preventing coal mine rock burst as claimed in claim 1, wherein: the bearing is characterized in that a leakage groove (4) with a long strip-shaped structure is formed in the top plate (3), a plurality of reinforcing plates (5) are welded in the leakage groove (4), and bearings are arranged at the joints of the rotating shaft (6) and the top plate (3).

3. The support for preventing coal mine rock burst as claimed in claim 1, wherein: the steel sheet (2) with bedplate (16) of cuboid structure have all been welded at the both ends of roof (3), just steel sheet (2) with roof (3) both ends bedplate (16) are together to it is fixed through second threaded rod (17) that are equipped with.

4. The support for preventing coal mine rock burst as claimed in claim 1, wherein: the two ends of the main top plate (9) are provided with grooves (11), the lengthened plate (10) and the grooves (11) are provided with three threaded holes (12), and the lengthened plate (10) is fixed on the grooves (11) through first threaded rods (13) arranged on the lengthened plate.

5. The support for preventing coal mine rock burst as claimed in claim 1, wherein: both ends bottom of striding roof beam (1) all welds has support (14), just the both ends bottom of steel sheet (2) all weld through I-steel (15) that are equipped with on striding roof beam (1).

6. The support for preventing coal mine rock burst as claimed in claim 1, wherein: the top plate (3) is made of steel, and the steel plate (2) and the top plate (3) have certain elasticity.

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