Thick coal seam roof-cutting roadway-forming floor heaving disaster control device

Abstract

The utility model relates to the technical field of roadway supporting, in particular to a thick coal seam roof-cutting roadway-forming floor heaving disaster control device which comprises a plurality of control units distributed at intervals in the trend of a roadway, and each control unit comprises two top beams, two bottom beams and two stand columns which are arranged in the transverse direction of the roadway; the top beam and the bottom beam are axially arranged in a telescopic manner; the free ends of the two top beams are rotationally connected with each other, and the fixed ends of the two top beams are rotationally connected to the top ends of the two stand columns correspondingly. The free ends of the two bottom beams are rotationally connected with each other, and the fixed ends of the two bottom beams are rotationally connected to the bottom ends of the two stand columns correspondingly. When a heaving floor disaster occurs, the two bottom beams of the control unit transversely extend along the roadway until the hinged position of the free ends of the two bottom beams moves to the heaving part of the bottom plate, and then the fixed ends of the two bottom beams are controlled to upwards rotate relative to the stand columns at the corresponding positions so that stress release of the heaving part of the bottom plate can be achieved. The stress concentration of the bottom plate is reduced in a mode of actively controlling deformation of the bottom plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roadway support, in particular to a thick coal seam roof cutting into roadway floor heave disaster control device. BACKGROUND

[0002] The reserves and production of thick coal seam accounts for about 45% of China's coal resources. When the mining roadway of thick coal seam working face is excavated, it is usually along the seam roof, which leads to the floor of the mining roadway composed of coal seam with low strength. In addition, due to the large mining height and large mining space of thick coal seam working face, the mining disturbance is more intense, which makes the mining roadway of thick coal seam prone to floor heave disaster. Floor heave disaster can cause the deformation of roadway floor and the damage of support structure, seriously affecting the stability and service life of the roadway, and even causing equipment damage and personnel injury accidents, which poses a great threat to the safety production of mine.

[0003] The roof cutting and pressure releasing no-pillar self-forming roadway technology can reduce the stress concentration of roadway surrounding rock from the source by optimizing the overburden structure of roadway, and is used in thick coal seam working face to control the large deformation of roadway surrounding rock, especially the floor heave disaster. However, during the use of roof cutting and pressure releasing no-pillar self-forming roadway technology in thick coal seam working face, especially during the support stage of the lagging working face, temporary support is needed to support the roadway to prevent the roadway from being affected by the strong dynamic pressure disturbance of the caved gangue in the goaf, causing large deformation of the roadway surrounding rock. The lagging support currently used in thick coal seam roof cutting and pressure releasing no-pillar self-forming roadway is hinged roof beam, single hydraulic support and cross-shaped I-beam bottom beam, which cannot effectively control the floor heave disaster. In addition, when affected by floor heave deformation, the cross-shaped I-beam bottom beam is prone to large bending deformation and scrap, which leads to the inability to be recycled.

[0004] Therefore, it is necessary to provide an improved technical solution to overcome the above-mentioned problems of the prior art. SUMMARY

[0005] The present application aims to provide a thick coal seam roof cutting into roadway floor heave disaster control device to solve or alleviate the above-mentioned problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solution:

[0007] A thick coal seam roof cutting into roadway floor heave disaster control device, the control device comprises a plurality of control units distributed along the roadway, the control unit comprises two roof beams, two bottom beams and two columns arranged transversely along the roadway;

[0008] The roof beam and the bottom beam are axially telescopic;

[0009] The free ends of the two roof beams are rotatably connected to each other, and the fixed ends of the two roof beams are rotatably connected to the top ends of the two columns.

[0010] The free ends of the two bottom beams are rotationally connected to each other, and the fixed ends of the two bottom beams are rotationally connected to the bottom ends of the two columns, respectively.

[0011] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the column is axially telescopic.

[0012] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the control device further comprises a side blocking mechanism.

[0013] The side blocking mechanism is arranged on the goaf gangue side and is used to apply a lateral jacking force to the goaf gangue.

[0014] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the side blocking mechanism comprises a plurality of side blocking units continuously distributed along the laneway trend.

[0015] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the side blocking units are axially telescopic along the laneway trend.

[0016] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the top end of the side blocking unit is rotationally connected to the fixed end of the corresponding position top beam, and the bottom end of the side blocking unit is rotationally connected to the fixed end of the corresponding position bottom beam.

[0017] The side blocking unit is axially telescopic along the height direction.

[0018] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the fixed end of the corresponding position top beam and the fixed end of the corresponding position bottom beam are both fixedly provided with a connecting mechanism.

[0019] The top end of the side blocking unit is rotationally connected to the connecting mechanism of the corresponding position, and the bottom end of the side blocking unit is rotationally connected to the connecting mechanism of the corresponding position.

[0020] The connecting mechanism is axially telescopic and is used to apply a lateral jacking force to the side blocking unit.

[0021] The thick coal seam top-cutting laneway floor heave disaster control device as described above, preferably, the top beam comprises a top beam plate and a first power mechanism, the first power mechanism is arranged on the lower side of the top beam plate and is used to control the axial telescoping of the top beam plate.

[0022] The bottom beam comprises a bottom beam plate and a second power mechanism, the second power mechanism is arranged on the upper side of the bottom beam plate and is used to control the axial telescoping of the bottom beam plate.

[0023] Compared with the closest prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

[0024] When the floor heave disaster occurs, the two floor beams of the control unit extend along the roadway in the transverse direction until the free ends of the two floor beams are moved to the floor heave position, and then the fixed ends of the two floor beams are controlled to rotate upward relative to the corresponding position of the stand column, so as to release the stress of the floor heave position, that is, to reduce the stress concentration of the floor by actively controlling the deformation of the floor; further, the above operation is performed on the two roof beams of the control unit, which can also achieve active control of the deformation of the roof. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of these drawings is not intended as an improper limitation on the present application. Among them:

[0026] Fig. 1 A thick coal seam roof cutting into a roadway floor heave disaster control device structure schematic diagram is provided according to some embodiments of the present application;

[0027] Fig. 2 A roadway roof support schematic diagram is provided according to some embodiments of the present application;

[0028] Fig. 3 A roadway floor heave control schematic diagram is provided according to some embodiments of the present application.

[0029] Explanation of reference signs:

[0030] 1, stand column; 2, roof beam plate; 3, floor beam plate; 4, first power mechanism; 5, second power mechanism; 6, side stop unit; 7, connecting mechanism; 8, gangue side of goaf; 9, roadway. DETAILED DESCRIPTION

[0031] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application rather than limiting the present application. In fact, those skilled in the art will clearly understand that modifications and variations can be made in the present application without departing from the scope or spirit of the present application. For example, features shown or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is expected that the present application includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0032] In the following description, the terms "first / second / third" are merely used to distinguish similar objects, and do not represent a specific order of the objects. It can be understood that the "first / second / third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for describing the embodiments of the present disclosure only and is not intended to be limiting of the present disclosure.

[0034] In the description of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings and are merely for the convenience of describing the present application and do not require the present application to be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. The terms "connected", "connected", "provided" used in the present application should be interpreted broadly, for example, can be fixedly connected, can also be detachably connected; can be directly connected, can also be indirectly connected through intermediate components; can be wired electrical connection, wireless electrical connection, or wireless communication signal connection, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0035] To avoid ambiguity, it is now defined that the transverse direction of the roadway 9 is the horizontal direction perpendicular to the direction of the roadway 9.

[0036] The following will be described in detail with reference to the accompanying drawings. Figs. 1-3 A thick coal seam top cutting into roadway floor heave disaster control device is further described in detail.

[0037] A thick coal seam top cutting into roadway floor heave disaster control device, the control device comprises a plurality of control units distributed along the direction of the roadway 9, the control unit comprises two roof beams, two floor beams and two columns 1 arranged along the transverse direction of the roadway 9;

[0038] The roof beam and the floor beam are axially telescopic arranged;

[0039] The free ends of the two roof beams are rotatably connected to each other, and the fixed ends of the two roof beams are rotatably connected to the top ends of the two columns 1 respectively;

[0040] The free ends of the two floor beams are rotatably connected to each other, and the fixed ends of the two floor beams are rotatably connected to the bottom ends of the two columns 1 respectively.

[0041] In the specific embodiments of the present application, the top beams and the bottom beams are arranged to be transversely telescopic along the roadway 9. The free ends of the two top beams arranged transversely along the roadway 9 are arranged oppositely, and the fixed ends of the two top beams are arranged oppositely. The free ends of the two bottom beams arranged transversely along the roadway 9 are arranged oppositely, and the fixed ends of the two bottom beams are arranged oppositely. The free ends of the two top beams arranged oppositely are hinged to each other, and the free ends of the two bottom beams arranged oppositely are hinged to each other. The lower side surfaces of the fixed ends of the two top beams arranged oppositely are respectively hinged to the upper end surfaces of the top ends of the two upright columns 1, and the upper side surfaces of the fixed ends of the two bottom beams arranged oppositely are respectively hinged to the lower end surfaces of the bottom ends of the two upright columns 1. The control unit has an overall mouth-shaped structure on the cross section of the roadway 9 and changes shape on the cross section of the roadway 9.

[0042] When a floor heave disaster occurs, the two bottom beams of the control unit are transversely stretched along the roadway 9 until the hinged positions of the free ends of the two bottom beams move to the position where the floor is about to heave, and then the fixed ends of the two bottom beams are controlled to rotate upward relative to the corresponding upright columns 1, so as to release the stress of the heaved position of the floor, that is, to reduce the stress concentration of the floor by actively controlling the deformation of the floor. Further, the two top beams of the control unit are subjected to the above operation, and active control of the deformation of the roof can also be achieved.

[0043] The upright columns 1 are arranged to be axially telescopic.

[0044] In the specific embodiments of the present application, the upright columns 1 are controlled to be telescopic by hydraulic pressure or air pressure, and the two upright columns 1 of the control unit are arranged to be telescopic along the height direction.

[0045] When the heights of the roofs on the two sides of the roadway 9 are inconsistent, the two upright columns 1 of the control unit are adjusted to be telescopic along the height direction to match the positions of the corresponding roofs, so that the top beams and the roofs are mutually fitted, and the control device effectively supports the roof of the roadway 9.

[0046] The control device further comprises a side blocking mechanism.

[0047] The side blocking mechanism is arranged on the goaf gangue side 8 and is used to apply a lateral jacking force to the goaf gangue.

[0048] In the specific embodiments of the present application, the side blocking mechanism is specifically a telescopic U-shaped steel. By arranging the side blocking mechanism on the goaf gangue side 8 of the control unit, the gangue can be effectively blocked from flowing into the roadway 9.

[0049] The side blocking mechanism comprises a plurality of side blocking units 6 continuously distributed along the trend of the roadway 9.

[0050] In the specific embodiments of the present application, the side blocking units 6 are closely arranged along the trend of the roadway 9 to form a continuous enclosure for the goaf gangue.

[0051] The side blocking units 6 are arranged to be telescopic along the trend of the roadway 9.

[0052] By controlling the stretching and retracting of the side blocking units 6 along the roadway 9, on the one hand, the close arrangement between the side blocking units 6 can be achieved, and on the other hand, the flexible arrangement of the side blocking units 6 can be achieved.

[0053] The top end of the side blocking unit 6 is rotationally connected with the fixed end of the top beam at the corresponding position, and the bottom end of the side blocking unit 6 is rotationally connected with the fixed end of the bottom beam at the corresponding position.

[0054] The side blocking unit 6 is arranged to stretch and retract along the height direction.

[0055] In specific embodiments of the present application, one side blocking unit 6 is connected with two control units at the corresponding position. Specifically, the side surface top end of one side blocking unit 6 is hingedly connected with the end faces of the fixed ends of two top beams at the corresponding position along the direction of the roadway 9, and the side surface bottom end of one side blocking unit 6 is hingedly connected with the end faces of the fixed ends of two bottom beams at the corresponding position along the direction of the roadway 9.

[0056] In other embodiments of the present application, one side blocking unit 6 is connected with one or more control units at the corresponding position, and the technical solution does not limit this.

[0057] When the column 1 is adjusted to stretch and retract due to the height of the roof, the side blocking unit 6 of the goaf gangue side 8 can be synchronously adjusted in height, so as to achieve overall blocking in the height direction of the goaf gangue side 8. At the same time, when the top beam is inclined due to the stretching and retracting adjustment of the column 1, the side blocking unit 6 is hingedly connected with the bottom beam and the top beam, so as to avoid the bending of the side blocking unit 6 due to the inclination of the top beam.

[0058] The fixed end of the top beam at the corresponding position and the fixed end of the bottom beam at the corresponding position are both fixedly provided with a connecting mechanism 7.

[0059] The top end of the side blocking unit 6 is rotationally connected with the connecting mechanism 7 at the corresponding position, and the bottom end of the side blocking unit 6 is rotationally connected with the connecting mechanism 7 at the corresponding position.

[0060] The connecting mechanism 7 is arranged to stretch and retract in the axial direction, and is used to apply a lateral jacking force to the side blocking unit 6.

[0061] In specific embodiments of the present application, one control unit is provided with one connecting mechanism 7 for the top beam and the bottom beam of the goaf gangue side 8. The connecting mechanism 7 is specifically a hydraulic or pneumatic controlled push rod. One side blocking unit 6 is connected with four connecting mechanisms 7 at the corresponding position. Specifically, the side surface top end of one side blocking unit 6 is hingedly connected with the connecting mechanisms 7 arranged at the fixed ends of two top beams at the corresponding position along the direction of the roadway 9, and the side surface bottom end of one side blocking unit 6 is hingedly connected with the connecting mechanisms 7 arranged at the fixed ends of two bottom beams at the corresponding position along the direction of the roadway 9. The connecting mechanism 7 is arranged to stretch and retract in the transverse direction of the roadway 9, which can effectively improve the lateral jacking force of the side blocking unit 6 to the goaf gangue.

[0062] In other embodiments of the present application, the roof beam and the floor beam of the gangue side 8 of the goaf are each provided with two or more connecting mechanisms 7, and the technical solutions are not limited thereto.

[0063] The roof beam comprises a roof beam plate 2 and a first power mechanism 4, and the first power mechanism 4 is arranged on the lower side of the roof beam plate 2 and used to control the axial extension and retraction of the roof beam plate 2.

[0064] The floor beam comprises a floor beam plate 3 and a second power mechanism 5, and the second power mechanism 5 is arranged on the upper side of the floor beam plate 3 and used to control the axial extension and retraction of the floor beam plate 3.

[0065] In specific embodiments of the present application, the first power mechanism 4 and the second power mechanism 5 are both hydraulic or pneumatic control push rods, and the roof beam plate 2 and the floor beam plate 3 are respectively used as the shield beam plates of the first power mechanism 4 and the second power mechanism 5, so as to effectively avoid the damage of the floor heave or rockfall to the power mechanisms. Specifically, the fixed end of the first power mechanism 4 is hingedly connected to the lower side of the free end of the roof beam plate 2, and the free end of the first power mechanism 4 is hingedly connected to the lower side of the fixed end of the roof beam plate 2. The fixed end of the second power mechanism 5 is hingedly connected to the upper side of the free end of the floor beam plate 3, and the free end of the second power mechanism 5 is hingedly connected to the upper side of the fixed end of the floor beam plate 3. The axial extension and retraction of the first power mechanism 4 controls the lateral extension and retraction of the roof beam plate 2 along the roadway 9, and the axial extension and retraction of the second power mechanism 5 controls the lateral extension and retraction of the floor beam plate 3 along the roadway 9.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thick coal seam roof cutting into lane floor heave disaster control device, characterized in that, The control device comprises a plurality of control units distributed along the roadway, the control unit comprising two roof beams, two floor beams and two upright columns arranged transversely along the roadway; The roof beams and the floor beams are arranged axially telescopic; The free ends of the two roof beams are rotatably connected to each other, and the fixed ends of the two roof beams are rotatably connected to the top ends of the two upright columns, respectively; The free ends of the two floor beams are rotatably connected to each other, and the fixed ends of the two floor beams are rotatably connected to the bottom ends of the two upright columns, respectively.

2. The thick coal seam top-removing entry-making floor heave disaster control device according to claim 1, characterized in that, The upright columns are arranged axially telescopic.

3. The thick seam top caving roadway floor heave disaster control device according to claim 2, characterized in that, The control device further comprises a side blocking mechanism; The side blocking mechanism is arranged on the side of the gangue in the goaf, and is used for applying a lateral jacking force to the gangue in the goaf.

4. The thick seam top-removing entry-making floor-heave disaster control device according to claim 3, characterized in that, The side blocking mechanism comprises a plurality of side blocking units distributed continuously along the roadway.

5. The thick seam top caving roadway floor heave disaster control device of claim 4, wherein, The side blocking units are arranged axially telescopic along the roadway.

6. The thick seam top caving roadway floor heave disaster control device according to claim 4, characterized in that, The top end of the side blocking unit is rotatably connected to the fixed end of the roof beam at the corresponding position, and the bottom end of the side blocking unit is rotatably connected to the fixed end of the floor beam at the corresponding position. The side blocking units are arranged axially telescopic along the height direction.

7. The thick seam top caving roadway floor heave disaster control device of claim 6, wherein, The fixed end of the roof beam at the corresponding position and the fixed end of the floor beam at the corresponding position are fixedly provided with a connecting mechanism; The top end of the side blocking unit is rotatably connected to the connecting mechanism at the corresponding position, and the bottom end of the side blocking unit is rotatably connected to the connecting mechanism at the corresponding position; The connecting mechanism is arranged axially telescopic, and is used for applying a lateral jacking force to the side blocking unit.

8. The thick seam top caving roadway floor heave disaster control device of claim 1, wherein, The roof beam comprises a roof beam plate and a first power mechanism, the first power mechanism being arranged on the lower side of the roof beam plate and being used for controlling the roof beam plate to be axially telescopic; The floor beam comprises a floor beam plate and a second power mechanism, the second power mechanism being arranged on the upper side of the floor beam plate and being used for controlling the floor beam plate to be axially telescopic.

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