CN216008508U - Coal mine tunnel sprays supporting device - Google Patents
Coal mine tunnel sprays supporting device Download PDFInfo
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- CN216008508U CN216008508U CN202121253749.9U CN202121253749U CN216008508U CN 216008508 U CN216008508 U CN 216008508U CN 202121253749 U CN202121253749 U CN 202121253749U CN 216008508 U CN216008508 U CN 216008508U
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Abstract
The utility model discloses a coal mine tunnel injection supporting device, which comprises a rock body and a supporting piece, wherein a tunnel is arranged in the middle of the rock body, a first concrete layer is poured on the inner surface of the tunnel, a reinforcing mesh is laid on the other side of the first concrete layer, a second concrete layer is sprayed on the surface of the reinforcing mesh, and the supporting piece is used for supporting the inner wall of the tunnel. The safety of use is increased.
Description
Technical Field
The utility model relates to the technical field of coal mine roadway support devices, in particular to a coal mine roadway injection support device.
Background
In recent years, with the increase of coal mining depth and the improvement of mechanical level, the section of a stoping roadway is gradually increased, the mine pressure is gradually increased, the bending resistance and torsion resistance of the conventional supporting device are weak, when the pressure is increased to a certain degree, the phenomena of damage such as skew, bending, deformation and the like are easy to occur, the supporting effect is poor, and the stability of a roadway surrounding rock mass cannot be well maintained.
Traditional coal mine tunnel supporting device carries out fixed mounting reinforcing bar net piece on the inner wall in tunnel usually, then carries out the spraying concrete layer to the surface of reinforcing bar net piece after the fixed mounting, makes and carries out fixed connection between reinforcing bar net piece and the inner wall in tunnel, and this kind of mode can play the effect of support, has nevertheless reduced the holding power to the tunnel inner wall to bearing strength is low, causes easily and collapses, has great potential safety hazard.
Therefore, a coal mine roadway jet support device is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coal mine roadway jet supporting device which can increase roadway supporting force and improve safety of the coal mine roadway jet supporting device so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a coal mine tunnel sprays supporting device, includes the rock mass and props up the piece, the tunnel has been seted up to the centre of rock mass, the inside surface in tunnel is pour and is equipped with first concrete layer, the reinforcing bar net piece has been laid to the opposite side on first concrete layer, the surface injection of reinforcing bar net piece has second concrete layer, and is used for right the inner wall in tunnel supports the piece.
Preferably, the bracing piece is including the equidistance fixed locating the inside arch of tunnel supports the steel, the installation jack has been seted up to the middle section equidistance of arch support steel, it connects firm pole to alternate between the installation jack to be equipped with, firm hole has been seted up to the both sides end equidistance that the arch supported the steel, firm hole all through expansion bolts respectively with second concrete layer, reinforcing bar net piece, first concrete layer and rock mass fixed connection, connect on the firm pole impartial distance installation be equipped with the mounting that the second concrete layer is connected, can play the effect of support to the inner wall in tunnel through the bracing piece, increase the bearing capacity in tunnel, reduce the inside phenomenon that causes the collapse, ftracture in tunnel, the effectual security that provides the use.
Preferably, the mounting includes the mounting panel, the fixed mounting sleeve that is equipped with in the middle of one side of mounting panel, just the mounting sleeve with connect firm pole phase-match, the through-hole has all been seted up to the both sides of mounting panel, the inside of through-hole all is equipped with the reinforcement stock, the one end of consolidating the stock runs through in proper order second concrete layer, reinforcing bar net piece and first concrete layer to the inside extension of rock mass and rather than fixed connection fix reinforcing bar net piece through the mounting, can be to connecting the fixed connection between firm pole and the rock mass, can play fixed effect to the reinforcing bar net piece of laying simultaneously.
Preferably, the fixed support stiffener that is equipped with of inboard middle point of arch support steel, the fixed support column that is equipped with in centre top one side of supporting the stiffener, the other end of support column with the inner wall fixed connection of arch support steel can play the effect of support to the centre of arch support steel, increases the bearing of the centre of arch support steel slightly, has improved the security of using.
Preferably, the support stiffener is the X type, and the tip all with the inside fixed connection of arch support steel can play the effect of support to the both sides of arch support steel, can play the fixed effect of placing to the support column simultaneously, avoids its unsettled placing, has increased the security of using.
Preferably, the connection stabilizing rod and the two sides of the installation insertion hole are fixedly connected with the arch support steel in a welding mode, so that the stability of the connection stabilizing rod inserted on the arch support steel is improved.
Preferably, the both ends of installation sleeve all through the welding mode with connect firm pole fixed connection, install the sleeve and connect firm pole and connect through the welding mode between the two, can increase the fixed connection of installation sleeve installation.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the existing supporting device of the coal mine tunnel is optimized, the supporting piece is additionally arranged in the tunnel, the second concrete layer after spraying and solidifying can be fixedly supported by the arch-shaped supporting steel arranged in the supporting piece at a medium distance, and two sides of the arch-shaped supporting steel are fixedly connected with the rock mass through the expansion bolts, so that the mounting stability of the end part of the arch-shaped supporting steel is increased, the internal strength and the supporting property of the tunnel are increased, meanwhile, the slag falling of the inner wall of the tunnel is avoided from causing crushing injury to workers, and the use safety is increased.
2. According to the utility model, the mounting sleeves on one side of the mounting plate are sleeved on the connecting and stabilizing rods at equal intervals, are fixedly connected with the connecting and stabilizing rods in a welding mode, and then are fixed between the first concrete layer and the rock mass through the reinforcing anchor rods, so that the connection stability between the first concrete layer and the rock mass is effectively improved.
3. According to the utility model, the support reinforcing rod is fixedly arranged at the middle end of the arch support steel, so that the bearing strength of the arch support steel can be increased, and the support column is fixedly arranged in the middle of the support reinforcing rod, so that the support column can support the middle of the arch support steel, the bearing capacity of the arch support steel in the vertical direction is increased, and the use safety is effectively improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a support member according to the present invention;
FIG. 3 is a schematic structural view of a fixing member according to the present invention;
FIG. 4 is an exploded view of the anchor of the present invention;
fig. 5 is a cross-sectional view of the present invention.
In the figure: 1-rock mass; 2-a roadway; 3-a first concrete layer; 4-reinforcing mesh; 5-a second concrete layer; 6-supporting parts; 7-arch support steel; 8-connecting a stabilizing rod; 9-a stabilizing hole; 10-expansion bolts; 11-a fixing member; 12-a mounting plate; 13-mounting the sleeve; 14-a through hole; 15-reinforcing the anchor rod; 16-support reinforcing rods; 17-support column.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, 2 and 5, a coal mine roadway injection supporting device shown in the figure comprises a rock mass 1, a roadway 2 is arranged in the middle of the rock mass 1, a first concrete layer 3 is poured on the inner surface of the roadway 2, a steel bar mesh 4 is laid on the other side of the first concrete layer 3, and a second concrete layer 5 is sprayed on the surface of the steel bar mesh 4;
and the supporting piece 6 is used for supporting the inner wall of the roadway 2.
Wherein, the support piece 6 is including the equidistance fixed locating the inside arch of tunnel 2 supports steel 7, the installation jack has been seted up to the middle section equidistance of arch support steel 7, it is equipped with connection firm pole 8 to alternate between the installation jack, firm hole 9 has been seted up to the equal equidistance of both sides end of arch support steel 7, firm hole 9 all through expansion bolts 10 respectively with second concrete layer 5, reinforcing bar net piece 4, first concrete layer 3 and rock mass 1 fixed connection, connect on the firm pole 8 impartial distance installation be equipped with the mounting 11 that second concrete layer 5 is connected.
Meanwhile, the two sides of the connecting and stabilizing rod 8 and the mounting jack are fixedly connected with the arched supporting steel 7 in a welding mode
When installing, erectting and supporting the inside of a coal mine tunnel: firstly, digging an arched tunnel 2 in the middle of a rock body 1, then fixedly spraying a first concrete layer 3 on the inner wall of the tunnel, after the sprayed first concrete layer 3 is solidified and formed, laying a steel bar net piece 4 on the surface of the tunnel, and fixedly connecting the tunnel with the solidified first concrete layer 3 by spraying a second concrete layer 5, so that the strength and the support property of the interior of the tunnel 2 are improved, meanwhile, the slag falling of the inner wall of the tunnel is avoided from damaging workers, and the use safety is improved;
treat the second concrete layer 5 of injection and solidify the back, then carry out equidistance installation arch support steel 7 in the inside in tunnel 2, the lateral wall of the arch support steel 7 of installing advances to carry out fixed connection between expansion bolts 10 and rock mass 1, the stability of placing is supported in the installation of arch support steel 7 has been increased, and will connect firm pole 8 and insert the inside of establishing with the mounting hole, support steel 7 through welding mode and arch and carry out fixed connection, can play the fixed connection effect to the tunnel inner wall, increase tunnel 2's bearing strength.
Example 2
Referring to fig. 2, 3 and 4, in this embodiment, as further described in embodiment 1, the supporting member 6 in the figure includes arch-shaped supporting steels 7 fixed inside the roadway 2 at equal intervals, mounting insertion holes are formed in the middle sections of the arch-shaped supporting steels 7 at equal intervals, connecting stabilizing rods 8 are inserted between the mounting insertion holes, stabilizing holes 9 are formed in both side ends of the arch-shaped supporting steels 7 at equal intervals, the stabilizing holes 9 are respectively and fixedly connected with the second concrete layer 5, the steel mesh 4, the first concrete layer 3 and the rock mass 1 through expansion bolts 10, and fixing members 11 connected with the second concrete layer 5 are installed on the connecting stabilizing rods 8 at equal intervals;
the fixing piece 11 comprises a mounting plate 12, a mounting sleeve 13 is fixedly arranged in the middle of one side of the mounting plate 12, the mounting sleeve 13 is matched with the connecting and stabilizing rod 8, through holes 14 are formed in two sides of the mounting plate 12, a reinforcing anchor rod 15 is arranged inside each through hole 14, and one end of each reinforcing anchor rod 15 sequentially penetrates through the second concrete layer 5, the reinforcing mesh 4 and the first concrete layer 3 to extend towards the inside of the rock body 1 and is fixedly connected with the second concrete layer, the reinforcing mesh 4 and the first concrete layer 3;
meanwhile, the two ends of the mounting sleeve 13 are fixedly connected with the connection stabilizing rod 8 in a welding mode.
In this embodiment, when to the installation, locate the equidistant cover of installation sleeve 13 of mounting panel 12 one side on connecting steady pole 8 to it carries out fixed connection through welding mode and connection steady pole 8, then fixes just between first, second concrete layer and rock mass 1 through consolidating anchor rod 15, the effectual steadiness of being connected between first, second concrete layer and the rock mass that has increased.
Example 3
Referring to fig. 1, fig. 2 and fig. 5, in this embodiment, for further explanation of other embodiments, the supporting member 6 in the figure includes arch-shaped supporting steels 7 fixed at equal intervals inside the roadway 2, installation insertion holes are formed at equal intervals in the middle sections of the arch-shaped supporting steels 7, connection stabilizing rods 8 are inserted between the installation insertion holes, stabilizing holes 9 are formed at equal intervals in both side ends of the arch-shaped supporting steels 7, the stabilizing holes 9 are respectively and fixedly connected with the second concrete layer 5, the steel mesh 4, the first concrete layer 3 and the rock mass 1 through expansion bolts 10, and fixing members 11 connected with the second concrete layer 5 are installed at equal intervals on the connection stabilizing rods 8.
A support reinforcing rod 16 is fixedly arranged at the middle end of the inner side of the arched support steel 7, a support pillar 17 is fixedly arranged at one side above the middle of the support reinforcing rod 16, and the other end of the support pillar 17 is fixedly connected with the inner wall of the arched support steel 7;
meanwhile, the support reinforcing rod 16 is X-shaped, and the end part of the support reinforcing rod is fixedly connected with the inside of the arch support steel 7.
In this embodiment, the fixed bracing stiffener 16 that is equipped with in the middle-end of arch support steel 7 can increase the bearing strength of arch support steel 7, is being equipped with support column 17 in the fixed centre that supports stiffener 16 simultaneously, and support column 17 can play the effect of support to the centre of arch support steel 7, has increased the bearing capacity of arch support steel 7 in vertical direction, the effectual security that increases the use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a coal mine tunnel sprays supporting device which characterized in that includes:
the rock mass (1), a tunnel (2) is arranged in the middle of the rock mass (1), a first concrete layer (3) is poured on the inner surface of the tunnel (2), a steel bar net piece (4) is laid on the other side of the first concrete layer (3), and a second concrete layer (5) is sprayed on the surface of the steel bar net piece (4);
a support member (6) for supporting the inner wall of the roadway (2) the support member (6).
2. The coal mine roadway injection support device of claim 1, wherein: the supporting part (6) is fixedly arranged at equal intervals inside the tunnel (2) and supports the steel (7), installation jacks are arranged at equal intervals in the middle section of the arch support steel (7), connection stabilizing rods (8) are arranged between the installation jacks in an alternating mode, stabilizing holes (9) are arranged at equal intervals at the two side ends of the arch support steel (7), the stabilizing holes (9) are respectively fixedly connected with the second concrete layer (5), the reinforcing mesh (4), the first concrete layer (3) and the rock mass (1) through expansion bolts (10), and fixing parts (11) connected with the second concrete layer (5) are arranged at equal intervals on the connection stabilizing rods (8).
3. The coal mine roadway injection support device according to claim 2, wherein: mounting (11) include mounting panel (12), fixed installation sleeve (13) that is equipped with in the middle of one side of mounting panel (12), just installation sleeve (13) with connect firm pole (8) phase-match, through-hole (14) have all been seted up to the both sides of mounting panel (12), the inside of through-hole (14) all is equipped with reinforcement stock (15), the one end of reinforcement stock (15) runs through in proper order second concrete layer (5), reinforcing bar net piece (4) and first concrete layer (3) to the inside of rock mass (1) extends and rather than fixed connection.
4. The coal mine roadway injection support device according to claim 2, wherein: the supporting device is characterized in that a supporting reinforcing rod (16) is fixedly arranged at the middle end of the inner side of the arch supporting steel (7), a supporting column (17) is fixedly arranged on one side of the upper portion of the middle of the supporting reinforcing rod (16), and the other end of the supporting column (17) is fixedly connected with the inner wall of the arch supporting steel (7).
5. The coal mine roadway injection support device according to claim 4, wherein: the support reinforcing rod (16) is X-shaped, and the end part of the support reinforcing rod is fixedly connected with the inside of the arch support steel (7).
6. The coal mine roadway injection support device according to claim 2, wherein: the connecting and stabilizing rod (8) and the two sides of the installation jack are fixedly connected with the arched supporting steel (7) in a welding mode.
7. The coal mine roadway injection support device according to claim 3, wherein: the two ends of the mounting sleeve (13) are fixedly connected with the connecting and stabilizing rod (8) in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121253749.9U CN216008508U (en) | 2021-06-04 | 2021-06-04 | Coal mine tunnel sprays supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121253749.9U CN216008508U (en) | 2021-06-04 | 2021-06-04 | Coal mine tunnel sprays supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008508U true CN216008508U (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121253749.9U Active CN216008508U (en) | 2021-06-04 | 2021-06-04 | Coal mine tunnel sprays supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216008508U (en) |
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2021
- 2021-06-04 CN CN202121253749.9U patent/CN216008508U/en active Active
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