CN115977695A - Telescopic coupling support and method for protecting roadway along air in steeply inclined and inclined coal seam - Google Patents
Telescopic coupling support and method for protecting roadway along air in steeply inclined and inclined coal seam Download PDFInfo
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- CN115977695A CN115977695A CN202211685378.0A CN202211685378A CN115977695A CN 115977695 A CN115977695 A CN 115977695A CN 202211685378 A CN202211685378 A CN 202211685378A CN 115977695 A CN115977695 A CN 115977695A
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Abstract
The invention discloses a telescopic coupling supporting method which comprises a roadway protection support, wherein the roadway protection support comprises a cross beam and a vertical rod, the vertical rod comprises a first support rod and a first telescopic joint, a first connecting groove is formed in one side of the first support rod, one side of the first telescopic joint is connected in the first connecting groove in a matched mode, and the first support rod and the first telescopic joint are fixedly connected through a first clamping apparatus; the first fixture comprises a first fixing plate and a second fixing plate, wherein a pressing groove matched with the first telescopic joint is formed in the middle of the second fixing plate, and the first fixing plate is connected with the second fixing plate through a bolt; the cross beam is similar to the vertical rod in structure, connecting lugs are arranged on two sides of the vertical rod, and connecting plates are connected to the connecting lugs through bolts; and the plurality of lane protecting supports are connected through connecting plates to form a lane protecting support group. The telescopic coupling supporting method can improve the applicability and the shock resistance of the roadway protecting support.
Description
Technical Field
The invention belongs to the technical field of coal mine support, and particularly relates to a telescopic coupling support and a method for protecting roadways along a steep and inclined coal seam.
Background
The important purpose of protecting the roadway along the air is to improve the recovery rate of coal resources, prolong the treatment time of gas disasters, realize efficient gas extraction and utilization and reduce the ten thousand-ton tunneling rate of the coal mine roadway. The domestic and foreign edge empty roadway protection technology is more mature in the condition of the slowly inclined coal seam, and has diversified supporting modes such as anchor net cables, flexible mold concrete wall anchor nets, stone brick block material racks and the like, but no economic, feasible, safe and reliable complete technology and supporting method are formed in the aspects of the inclined and steeply inclined coal seam edge empty roadway protection technology at home and abroad; the telescopic coupling support in the prior art is difficult to meet the requirements of various mine roads.
The existing support along the empty protective roadway is mainly applied to a slow inclined coal seam, each support is of a body stress structure, the overall strength is limited in cost and applicable section, the support cannot bear dynamic pressure of a mine and is seriously deformed, and the support has no successful application case in the steeply inclined and inclined coal seams along the empty protective roadway at home and abroad; the support technology of the soft formwork and the cut-top roadway protection developed in recent years is successfully applied to slowly inclined coal seams, a small number of southern mines are tried on inclined coal seams along empty roadway protection, but the construction difficulty is high, certain influence is caused on the production efficiency, and the support technology of the soft formwork and the cut-top roadway protection is not successfully applied to the steeply inclined coal seams along empty roadway protection at home and abroad.
The patent with application number CN201920740590.X discloses a scalable roadway support bow member, including bow member, horizontal flexible pneumatic cylinder and vertical flexible pneumatic cylinder, the bow member is provided with the segmental arc at top and two vertical sections of both sides with segmental arc both ends articulated, segmental arc and vertical section are extending structure to drive it through horizontal flexible pneumatic cylinder and vertical flexible pneumatic cylinder respectively and stretch out and draw back. The technical scheme adopts a hydraulic telescopic mode to realize transverse and longitudinal telescopic. However, the structure is fixed to be an arch structure, so that various different types of mine roads cannot be completely met, and meanwhile, the danger of pipe explosion easily occurs when the falling rock impact is borne by completely adopting a hydraulic support mode.
Disclosure of Invention
The invention aims to provide a telescopic coupling support, which aims to solve the problem that the inclined and steeply inclined coal seams which are proposed in the background technology do not have safe and reliable supports along the empty roadway protection technology at home and abroad;
the method is used for solving the problem that an economical, feasible, safe and reliable complete technology and a supporting method are not formed in the technical aspect of roadway protection along inclined and steeply inclined coal seams at home and abroad, which are proposed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for protecting roadways along empty sides of steeply inclined and inclined coal seams comprises the steps of using a telescopic coupling support to protect roadways along empty sides, wherein the telescopic coupling support comprises a telescopic roadway protection support which comprises a vertical rod and a cross beam, the vertical rod comprises a first supporting rod and a first telescopic joint, a first connecting groove is formed in one side of the first supporting rod, one side of the first telescopic joint is connected into the first connecting groove in a matched mode, and the first supporting rod and the first telescopic joint are fixedly connected through a first clamping apparatus; the first fixture is used for fixing the positions of the first support rod and the first telescopic joint;
connecting lugs are arranged on two sides of the vertical rod, and the connecting plates are connected with the connecting lugs; the cross beam comprises a second support rod and a second telescopic joint, wherein a second connecting groove is formed in one side of the second support rod, one side of the second telescopic joint is connected in the second connecting groove in a matched mode, and the second support rod and the second telescopic joint are fixedly connected through a second clamping apparatus; the second fixture is used for fixing the positions of the second support rod and the second expansion joint;
the gob-side entry protection specifically comprises a transportation lane inner entry protection method and a transportation lane outer entry protection method;
the method for protecting the inner lane of the transportation lane comprises the following steps:
(1): when the top plate of the transportation roadway is half-covered, the telescopic roadway protection support is used for supporting one side of the roadway close to the goaf working area, wherein the vertical rod is obliquely arranged, one side of the cross beam is fixedly connected with the vertical rod, the other side of the cross beam is connected with the side wall of the roadway, and the telescopic roadway protection support is connected together through a connecting plate to form a roadway protection support group;
(2): when the top plate of the transportation roadway is fully covered, the telescopic roadway protection supports are arranged on two sides of the roadway for supporting; the vertical rods of the telescopic lane protection support are arranged on two sides of the roadway, and the top of the vertical rod on the side, which is obliquely downward, of the roadway top is designed to be matched with the roadway top; the vertical rods are connected through the cross beam; the telescopic lane protecting supports are connected together through connecting plates to form a lane protecting support group;
the method for protecting the transportation lane comprises the following steps:
(a) The method comprises the following steps The method comprises the following steps that an upper lane port of a transportation lane is provided with an outer lane protection support, the outer lane protection support group consists of telescopic lane protection supports, the telescopic lane protection supports support the whole upper lane port, vertical rods are used for supporting the top of the upper lane port, cross beams are used for connecting the vertical rods, and the outer lane protection supports form an outer lane protection support group through connecting plates;
(b) The method comprises the following steps And a protective net, air duct cloth and a cement back plate are sequentially arranged on one side of the roadway external protection roadway support group close to the goaf working area.
Further, in the method for protecting the transportation lane with the semi-covered top plate, the beam is connected and fixed with the lane through an anchor cable; in the method for protecting the transportation lane with the full-coverage tunnel top plate of the transportation lane, the vertical rods and the transverse beams are fixedly connected with the lane through anchor cables.
And further, when the coal in the gob is spontaneous combustion or has a small amount of air leakage, spraying slurry or strip grouting on the protective net for sealing.
Furthermore, a metal net is arranged on the outer side of the roadway protection support group in the transportation roadway; the metal net is provided with two layers, and tight-backed semicircle wood is filled between the two layers of metal nets.
Further, the metal mesh is fixed by the anchor rod.
A telescopic coupling support comprises a plurality of telescopic lane protection supports, wherein each telescopic lane protection support comprises a vertical rod and a cross beam, each vertical rod comprises a first supporting rod and a first telescopic joint, a first connecting groove is formed in one side of each first supporting rod, one side of each first telescopic joint is connected in the corresponding first connecting groove in a matched mode, and the first supporting rods and the first telescopic joints are fixedly connected through first clamping devices; the first fixture is used for fixing the positions of the first support rod and the first telescopic joint;
the two sides of the vertical rod are provided with connecting lugs, and the connecting plate is connected with the connecting lugs; the cross beam comprises a second support rod and a second telescopic joint, wherein a second connecting groove is formed in one side of the second support rod, one side of the second telescopic joint is connected in the second connecting groove in a matched mode, and the second support rod and the second telescopic joint are fixedly connected through a second clamping device; the second fixture is used for fixing the positions of the second supporting rod and the second telescopic joint.
Furthermore, the first fixture and the second fixture have the same structure and respectively comprise a first fixing plate and a second fixing plate, wherein the middle part of the second fixing plate is provided with a pressing groove matched with the first telescopic joint or the second telescopic joint, and the first fixing plate is connected with the second fixing plate through a bolt.
Furthermore, a first anchor cable connecting part is arranged at a position, close to the bottom, of the first supporting rod; one side of the first telescopic joint far away from the first telescopic joint is provided with a second anchor cable connecting part.
Furthermore, the cross sections of the first connecting groove and the second connecting groove are both in a trapezoidal structure.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a roadway protection method according to different roadway conditions, which can support a transport roadway according to mine roads under different inclined conditions and can ensure effective support.
The invention also discloses a roadway protecting method, which can effectively prevent the waste rock from collapsing in the goaf working area by supporting the upper port through the roadway protecting support.
The transportation lane to the heavy pitch adopts scalable lane support of protecting to be used for supporting the tunnel and is close to one side of adopting empty work area, and wherein the montant slope sets up, crossbeam one side and montant rigid coupling, and the opposite side is connected with the tunnel lateral wall. Partial pressure generated at the top of the transportation lane can be transmitted to the cross beam through the inclined vertical rod in the mode, and the cross beam transmits force to the side wall of the transportation lane, so that the overall strength of the lane protection support is improved.
The transportation lane to ordinary slope adopts scalable lane support setting of protecting to support in the both sides in tunnel, and the frame rack structure is constituteed to montant and crossbeam, can effectively guarantee the integrality of transportation lane, and frame rack structure's scalable lane support of protecting can conduct the atress on the tunnel uniformly to guarantee to protect the lane support and can provide holding power effectively.
And a protective net, air duct cloth and a cement back plate are sequentially arranged on one side of the roadway external protection roadway support group close to the goaf working area. The overall strength of the transportation lane can be improved by the protective screening, the air duct cloth and the cement back plate, and meanwhile, the lateral blocking capacity of the lane protection support group can also be improved. Can promote the ability of blockking of lane outer lane protection support group through this kind of design, can prevent simultaneously through the mode of quick whitewashing that the wind of haulage lane from entering into in the mining empty workspace.
The montant comprises first bracing piece and first telescopic joint to connect fixedly together through first fixture, one side of first bracing piece is provided with first connecting groove, and first telescopic joint is through the cooperation of first connecting groove and first bracing piece on the first bracing piece, conveniently adjusts the position of first telescopic joint, guarantees the joint strength of first telescopic joint and first bracing piece simultaneously.
The crossbeam comprises second bracing piece and second telescopic joint to connect fixedly together through the second fixture, one side of second bracing piece is provided with second connecting groove, and the second telescopic joint is through the cooperation of second connecting groove and the second bracing piece on the second bracing piece, conveniently adjusts the position of second telescopic joint, guarantees the joint strength of second telescopic joint and second bracing piece simultaneously.
The method for protecting the roadway along the empty edge of the steeply inclined and inclined coal seam is characterized in that the telescopic support is coupled with surrounding rocks of the roadway through anchor rods to form an integral stress structure, so that the support along the empty protective roadway is telescopic, the strength of resisting the influence of dynamic pressure of a mine is improved qualitatively, and the method for protecting the roadway along the steeply inclined and inclined coal seam along the empty protective roadway is formed.
Drawings
FIG. 1 is a schematic view of a roadway support structure according to the present invention;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a second schematic view of the lane-protecting support structure of the present invention;
FIG. 4 is a schematic view of a first fixture of the present invention;
FIG. 5 is a third schematic view of the lane-protecting support structure of the present invention;
fig. 6 is a schematic structural view of the roadway protection support of the present invention disposed in a goaf working area;
fig. 7 is a partially enlarged view of a portion a of fig. 6.
The mark in the figure is: 1-a first expansion joint, 2-a first fixture, 3-a first support rod, 4-a first anchor cable connecting part, 5-a foot plate, 6-a second expansion joint, 7-a second fixture, 8-a second support rod, 9-a connecting plate, 10-a connecting lug, 11-a first connecting groove, 12-a second anchor cable connecting part, 13-a third anchor cable connecting part, 14-a first fixing plate, 15-a second fixing plate, 16-a pressing groove, 17-gangue, 18-a cement back plate, 19-air duct cloth, 20-a protective net, 21-a metal net and 22-a back-tightening half log.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Examples
A method for protecting roadways along the empty side of steeply inclined and inclined coal seams comprises the steps of using a telescopic coupling support to protect roadways along the empty side, wherein the telescopic coupling support comprises a telescopic roadway protection support which comprises a vertical rod and a cross beam, the vertical rod comprises a first supporting rod 3 and a first telescopic joint 1, one side of the first supporting rod 3 is provided with a first connecting groove 11, one side of the first telescopic joint 1 is connected into the first connecting groove 11 in a matched mode, and the first supporting rod 3 and the first telescopic joint 1 are fixedly connected through a first clamping apparatus 2; the first fixture 2 is used for fixing the positions of the first support rod 3 and the first telescopic joint 1;
the two sides of the vertical rod are provided with connecting lugs 10, and the connecting plate 9 is connected with the connecting lugs 10; the crossbeam comprises a second support rod 8 and a second telescopic joint 6, wherein one side of the second support rod 8 is provided with a second connecting groove, one side of the second telescopic joint 6 is connected in the second connecting groove in a matching manner, and the second support rod 8 and the second telescopic joint 6 are fixedly connected through a second clamping apparatus 7; the second fixture 7 is used for fixing the positions of the second support rod 8 and the second expansion joint 6;
the gob-side entry protection specifically comprises a transportation lane inner entry protection method and a transportation lane outer entry protection method;
the method for protecting the inner lane of the transportation lane comprises the following steps:
(1): when a top plate of the transportation roadway is in half coverage, the telescopic roadway protection support is used for supporting one side of the roadway close to a goaf working area, wherein the vertical rod is obliquely arranged, one side of the cross beam is fixedly connected with the vertical rod, the other side of the cross beam is connected with the side wall of the roadway, and the telescopic roadway protection support is connected together through a connecting plate 9 to form a roadway protection support group;
as shown in fig. 3, the tunnel is sharply inclined and the space is smaller, the vertical rod obliquely arranged at the position can transmit the pressure part generated by the top of the tunnel to the vertical rod to the cross beam, and the cross beam transmits the force to the side wall of the tunnel. Thereby effectively guaranteed to make the lane protection support group who arranges have fine support strength in limited space, simultaneously, the transportation lane collecting space area gangue 17 that drops easily, the first bracing piece 3 of slope setting can effectively prevent that gangue 17 from assaulting first bracing piece 33 and leading to first bracing piece 33 position to remove.
(2): when the top plate of the transportation roadway is fully covered, the telescopic roadway protection supports are arranged on two sides of the roadway for supporting; the vertical rods of the telescopic lane protection support are arranged on two sides of the roadway, and the top of the vertical rod on the side, which is obliquely downward, of the roadway top is designed to be matched with the roadway top; the vertical rods are connected through the cross beam; the telescopic lane protecting supports are connected together through a connecting plate 9 to form a lane protecting support group;
as shown in figure 1, the roadway is steeply inclined but enough in arrangement space, and in this way, the roadway protection support integrally forms a frame type structure, so that effective supporting force can be provided for the roadway with large width. When the vertical rod on one side opposite to the mining working area is impacted by the collapsed waste rock 17, the vertical rod transmits force to the vertical rod on the other side through the cross beam, and the vertical rod on the other side transmits the force to the roadway wall, so that sufficient supporting force is guaranteed.
It should be noted that, in a roadway which is not steeply inclined, as shown in fig. 5, the roadway protection supports may be formed only by vertical rods, and the expansion joints of the two roadway protection supports are both designed to be curved and connected to form an arch structure, so that the roadway can be stably supported by the design without occupying too much roadway space. Arched door type roadway protecting support can
The method for protecting the transportation lane comprises the following steps:
(a) The method comprises the following steps Arranging a lane outer protection lane support at an upper level port of a transportation lane, wherein the lane outer protection lane support group consists of telescopic lane protection supports, the telescopic lane protection supports support the whole upper level port, vertical rods are used for supporting the top of the upper level port, cross beams are used for linking the vertical rods, and the lane outer protection lane support group consists of outer lane protection lane support groups through connecting plates 9;
(b) The method comprises the following steps A protective net 20, a wind tube cloth 19 and a cement back plate 18 are sequentially arranged on one side of the lane-protecting and lane-protecting support group close to the goaf working area.
The method outside the transportation lane adopts a plurality of lane protecting supports to form a lane protecting support group outside the transportation lane at the junction of the upper port transportation lane of the transportation lane and the goaf working area, the retractable lane protecting supports can ensure that the top and the bottom of the lane protecting supports can be effectively contacted with the top surface and the bottom surface of the upper port of the transportation lane, so that effective supporting force is ensured, and the anchor rod is used for fixing the position of the lane protecting supports and preventing the lane protecting supports from moving. The combination of the roadway-protecting support group and the cement back plate 18 can stop the waste rock 17 falling from the goaf working area, and the roadway-protecting support at the position bears larger transverse load due to larger inclination angle, while the roadway-protecting support structure of the invention can bear larger transverse load, thereby ensuring the effective stop of the waste rock 17. The design of the air duct cloth 19 is to prevent air in the haulage drift from leaking into the goaf work area. The design of the protection net 20 is to facilitate guniting at the time of later maintenance.
In a preferred embodiment, in the method for protecting the transportation lane with the semi-covered top plate, the cross beam is fixedly connected with the lane through an anchor cable; in the method for protecting the transportation lane with the full-coverage tunnel top plate of the transportation lane, the vertical rods and the cross beams are connected and fixed with the lane through anchor cables.
In a preferred embodiment, when the coal in the goaf has spontaneous combustion or has a small amount of air leakage, the coal is sprayed or grouted on the protective net 20 to close. The protective net 20 is sprayed with slurry or grouted and sealed by a goaf strip, so that spontaneous combustion of coal discarded in the goaf can be prevented, and gas overrun accidents caused by air leakage can be prevented. The thickness of the guniting on the protective net 20 is based on the principle of no air leakage, and preferably flexible concrete is sprayed; the sealing of the strip grouting in the goaf needs to be carried out in the gap of the collapsed filling gangue, the principle of controlling the sealing of the strip grouting in the goaf without air leakage and needing the supporting strength is taken as the principle, and the related values are designed according to the measured parameters.
In a preferred embodiment, the outside of the roadway support frame group in the transportation roadway is provided with a metal net 21; the metal net 21 is provided with two layers, and tight-backed semi-circular wood 22 is filled between the two layers of metal net 21.
In a preferred embodiment, the metal mesh 21 is fixed by anchor rods, so that the support and the loose rock body form an integral structure to improve the support strength
A telescopic coupling support comprises a plurality of telescopic lane protection supports, wherein each telescopic lane protection support comprises a vertical rod and a cross beam, each vertical rod comprises a first supporting rod 3 and a first telescopic joint 1, one side of each first supporting rod 3 is provided with a first connecting groove 11, one side of each first telescopic joint 1 is connected in the corresponding first connecting groove 11 in a matching mode, and each first supporting rod 3 and each first telescopic joint 1 are fixedly connected through a first clamping apparatus 2; the first fixture 2 is used for fixing the positions of the first support rod 3 and the first telescopic joint 1;
the two sides of the vertical rod are provided with connecting lugs 10, and the connecting plate 9 is connected with the connecting lugs 10; the crossbeam comprises a second support rod 8 and a second telescopic joint 6, wherein one side of the second support rod 8 is provided with a second connecting groove, one side of the second telescopic joint 6 is connected in the second connecting groove in a matching manner, and the second support rod 8 and the second telescopic joint 6 are fixedly connected through a second fixture 7; the second fixture 7 is used for fixing the positions of the second support rod 8 and the second telescopic joint 6.
In a preferred embodiment, the first fixture 2 and the second fixture 7 are preferably identical in structure and each include a first fixing plate 14 and a second fixing plate 15, wherein the second fixing plate 15 has a pressing groove 16 at a middle portion thereof for cooperating with the first telescopic joint 1 or the second telescopic joint 6, and the first fixing plate 14 and the second fixing plate 15 are connected by bolts.
In practical use, the corresponding first support rod 3 and second support rod 8 are selected according to the height and width of the roadway, for example, the first support rod 3 with the height of the roadway of 1.5m-2.5m is selected, and the second support rod 8 with the width of the roadway of 4m is selected with the width of 2m-3 m. The first telescopic joint 1 is connected in a first connecting groove 11 of the first supporting rod 3 in a matching manner, and the matching position is adjusted according to the actual heights of different sections of the roadway; the second telescopic joint 6 is connected in a matching manner in a second connecting groove of the second supporting rod 8, the position is adjusted according to the actual width of different sections of a roadway, after the matching position is adjusted, a pressing groove 16 of a second fixing plate 15 is pressed towards the first telescopic joint 1, and then the first fixing plate 14 and the second fixing plate 15 are locked by bolts, so that the first telescopic joint 1 is stably connected with the first supporting rod 3; the second telescopic joint 6 is stably connected with the second supporting rod 8 by the same method. The crossbeam has constituteed a lane support with the montant, utilize connecting plate 9 to protect a plurality of lane leg joint to form and protect lane support group, the clearance of protecting the lane support has been decided to the length of connecting plate 9, need confirm actual support intensity according to the geological structure in tunnel when selecting the length of connecting plate 9, then need select than shorter connecting plate 9 when needing enough big support intensity, it is more intensive also to make to protect the lane support, the structure of keeping the transport lane that such lane support group can be stable. Due to the adoption of the design of the telescopic joint and the supporting rod, the length of the vertical rod and the length of the cross beam can be adjusted according to actual conditions. Thereby guaranteed the support haulage roadway that montant and crossbeam can be stable. And adopt this kind of design can improve the suitability of spare part, in the little tunnel of height and width gap, all can adopt the spare part of same group to splice, the cost is reduced under the circumstances of having guaranteed sufficient support strength.
In a preferred embodiment, a first anchor cable connecting part 4 is arranged at the position, close to the bottom, of the first supporting rod 3; one side of the first telescopic joint 1, which is far away from the first telescopic joint 1, is provided with a second anchor cable connecting part 12. The anchor rope connecting part is used as a connecting point of the anchor rope, so that the anchor rope is convenient to connect.
In a preferred embodiment, the cross-sections of the first connecting groove 11 and the second connecting groove are both trapezoidal structures. The design of trapezium structure makes first bracing piece 3 can not take place the problem of rotation after 1 cooperation with first telescopic joint to the first connecting groove 11 of trapezium structure obtains through the processing of U-shaped groove very easily. The same is true of the second support bar 8 and the second telescopic joint 6.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to circumstances.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A method for protecting roadway along the air in a steeply inclined and inclined coal seam is characterized in that: the roadway protection method comprises the steps that a telescopic coupling support is used for protecting a roadway along the air, wherein the telescopic coupling support comprises a telescopic roadway protection support, the telescopic roadway protection support comprises a vertical rod and a cross beam, the vertical rod comprises a first supporting rod (3) and a first telescopic joint (1), a first connecting groove (11) is formed in one side of the first supporting rod (3), one side of the first telescopic joint (1) is connected into the first connecting groove (11) in a matched mode, and the first supporting rod (3) and the first telescopic joint (1) are fixedly connected through a first clamping apparatus (2); the first fixture (2) is used for fixing the positions of the first support rod (3) and the first telescopic joint (1);
the two sides of the vertical rod are provided with connecting lugs (10), and the connecting plate (9) is connected with the connecting lugs (10); the crossbeam comprises a second supporting rod (8) and a second telescopic joint (6), wherein one side of the second supporting rod (8) is provided with a second connecting groove, one side of the second telescopic joint (6) is connected in the second connecting groove in a matching manner, and the second supporting rod (8) and the second telescopic joint (6) are fixedly connected through a second clamping apparatus (7); the second fixture (7) is used for fixing the positions of the second support rod (8) and the second expansion joint (6);
the gob-side entry protection method specifically comprises a transportation lane inner entry protection method and a transportation lane outer entry protection method;
the method for protecting the inner lane of the transportation lane comprises the following steps:
(1): when the top plate of the transportation roadway is half-covered, the telescopic roadway protection support is used for supporting one side of the roadway close to the goaf working area, wherein the vertical rod is obliquely arranged, one side of the cross beam is fixedly connected with the vertical rod, the other side of the cross beam is connected with the side wall of the roadway, and the telescopic roadway protection support is connected together through a connecting plate (9) to form a roadway protection support group;
(2): when the top plate of the transportation roadway is fully covered, the telescopic roadway protection supports are arranged on two sides of the roadway for supporting; the vertical rods of the telescopic roadway protection support are arranged on two sides of a roadway, and the top of the vertical rod positioned on the side, inclined downwards, of the roadway top is designed to be matched with the roadway top; the vertical rods are connected through the cross beam; the telescopic lane protecting supports are connected together through a connecting plate (9) to form a lane protecting support group;
the method for protecting the transport lane comprises the following steps:
(a) The method comprises the following steps Arranging a lane outer protecting support at an upper port of a transportation lane, wherein the lane outer protecting support group consists of telescopic lane protecting supports, the telescopic lane protecting supports support the whole upper port, vertical rods are used for supporting the top of the upper port, cross beams are used for connecting the vertical rods, and the lane outer protecting support group consists of connecting plates (9);
(b) The method comprises the following steps One side of the roadway external protection support group close to the goaf working area is sequentially provided with a protective net (20), air duct cloth (19) and a cement back plate (18).
2. The method for protecting a roadway along a goaf in a steeply inclined and inclined coal seam according to claim 1, characterized in that: in the method for protecting the transportation lane with a semi-covered top plate, a beam is connected and fixed with the lane through an anchor cable; in the method for protecting the transportation lane with the full-coverage tunnel top plate of the transportation lane, the vertical rods and the cross beams are connected and fixed with the lane through anchor cables.
3. The method for protecting a roadway along a goaf in a steeply inclined and inclined coal seam according to claim 1, characterized in that: when the coal in the goaf is spontaneous combustion or has a small amount of air leakage, the coal is sprayed on the protective screen (20) or sealed by strip grouting.
4. The method for protecting a roadway along a goaf in a steeply inclined and inclined coal seam according to claim 1, characterized in that: a metal net (21) is arranged on the outer side of the roadway protection support group in the transportation roadway; the metal net (21) is provided with two layers, and tightening semicircular wood (22) is filled between the two layers of metal nets (21).
Two layers of metal nets (21) are arranged on the outer side of the steep and inclined coal seam along the empty protection roadway support group, and tight-backed semi-circular wood (22) is filled between the two layers of metal nets to form an energy absorption buffer layer, so that the deformation of the steep and inclined coal seam along the empty protection roadway support is within a controllable and acceptable value, and the expected supporting safety effect can be ensured.
5. The method for protecting a roadway along a goaf in a steeply inclined and inclined coal seam according to claim 1, characterized in that: the metal net (21) is fixed by the anchor rod.
6. The utility model provides a scalable coupling is strutted which characterized in that: the roadway protection device comprises a plurality of telescopic roadway protection supports, wherein each telescopic roadway protection support comprises a vertical rod and a cross beam, each vertical rod comprises a first supporting rod (3) and a first telescopic joint (1), a first connecting groove (11) is formed in one side of each first supporting rod (3), one side of each first telescopic joint (1) is connected in the corresponding first connecting groove (11) in a matched mode, and each first supporting rod (3) and each first telescopic joint (1) are fixedly connected through a first clamping apparatus (2); the first fixture (2) is used for fixing the positions of the first support rod (3) and the first telescopic joint (1);
the two sides of the vertical rod are provided with connecting lugs (10), and the connecting plate (9) is connected with the connecting lugs (10); the crossbeam comprises a second supporting rod (8) and a second telescopic joint (6), wherein a second connecting groove is formed in one side of the second supporting rod (8), one side of the second telescopic joint (6) is connected in the second connecting groove in a matched mode, and the second supporting rod (8) and the second telescopic joint (6) are fixedly connected through a second clamping device (7); the second fixture (7) is used for fixing the positions of the second support rod (8) and the second expansion joint (6).
7. The retractable coupling support of claim 6, wherein: the first fixture (2) and the second fixture (7) are identical in structure and respectively comprise a first fixing plate (14) and a second fixing plate (15), wherein the middle of the second fixing plate (15) is provided with a pressing groove (16) matched with the first telescopic joint (1) or the second telescopic joint (6), and the first fixing plate (14) is connected with the second fixing plate (15) through bolts.
8. The retractable coupling support of claim 6, wherein: a first anchor cable connecting part (4) is arranged at a position, close to the bottom, of the first supporting rod (3); one side of the first telescopic joint (1) far away from the first telescopic joint (1) is provided with a second anchor cable connecting part (12).
9. The retractable coupling support of claim 6, wherein: the sections of the first connecting groove (11) and the second connecting groove are both in a trapezoidal structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685378.0A CN115977695A (en) | 2022-12-27 | 2022-12-27 | Telescopic coupling support and method for protecting roadway along air in steeply inclined and inclined coal seam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685378.0A CN115977695A (en) | 2022-12-27 | 2022-12-27 | Telescopic coupling support and method for protecting roadway along air in steeply inclined and inclined coal seam |
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| CN115977695A true CN115977695A (en) | 2023-04-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
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2022
- 2022-12-27 CN CN202211685378.0A patent/CN115977695A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
| CN117307191B (en) * | 2023-11-28 | 2024-03-22 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
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