CN217151991U - Reinforced coal mine soft rock roadway supporting device - Google Patents
Reinforced coal mine soft rock roadway supporting device Download PDFInfo
- Publication number
- CN217151991U CN217151991U CN202221140883.2U CN202221140883U CN217151991U CN 217151991 U CN217151991 U CN 217151991U CN 202221140883 U CN202221140883 U CN 202221140883U CN 217151991 U CN217151991 U CN 217151991U
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- Prior art keywords
- shaped steel
- layer
- arched
- tunnel
- soft rock
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- 239000003245 coal Substances 0.000 title claims description 10
- 230000008093 supporting effect Effects 0.000 title description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 239000011378 shotcrete Substances 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 40
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- -1 arch support Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a strenghthened type colliery soft rock roadway support device, its technical scheme main points are: the tunnel comprises a roadway, the inside in tunnel is provided with U shaped steel support, the U shaped steel support is fixed to be set up on the fixed beam, the lower extreme of fixed beam is provided with the arch support, the below of arch support is provided with arched beam, metal mesh, bottom guniting layer, and first stock passes arched beam, metal mesh, bottom guniting layer extend into in the rock mass of tunnel below, be provided with the crossbeam between the fixed beam, the upper end of first stock extends to crossbeam department and with the crossbeam is connected, arched beam with it has concrete layer to fill between the crossbeam, arched beam with connect through the down tube between the crossbeam, the utility model discloses can effectually prevent that the condition of pucking from taking place.
Description
Technical Field
The utility model relates to a roadway support technical field, in particular to strenghthened type colliery soft rock roadway support device.
Background
Coal mines in China are mainly underground mining, a large number of roadways need to be excavated underground, and roadway support is adopted to keep the roadways smooth and surrounding rocks stable, so that the method has important significance for coal mine construction and production. The basic purpose of supporting the roadway is to alleviate and reduce the movement of surrounding rocks, so that the section of the roadway is not excessively reduced, and meanwhile, the scattered and damaged surrounding rocks are prevented from falling. The roadway supporting effect does not only depend on the supporting force of the support, but also is influenced by a series of factors such as the nature of the surrounding rock, the mechanical property of the support, the installation density of the support, the time of installing the support, the installation quality of the support, the contact mode of the support and the surrounding rock and the like.
Referring to the patent of the Chinese utility model with the granted bulletin number of CN203321541U, the utility model discloses a soft rock roadway support device, which comprises a replacement type surrounding rock body arranged on the surface layer of the soft rock roadway and a sealing layer arranged on the surface of the replacement type surrounding rock body, wherein the replacement type surrounding rock body is a tough concrete layer guniting layer taking a steel wire rope as a rib, grouting anchor rods are evenly implanted in the replacement type surrounding rock body, and the grouting anchor rods and the steel wire rope in the tough concrete layer guniting layer are linked and combined to form a grouting anchor rod group; the sealing layer is a cement spraying layer taking a steel wire rope as a radial bone, and the steel wire rope in the cement spraying layer is connected with the end part of the grouting anchor rod.
The soft rock roadway support device is replaced to form a replacement type surrounding rock body, the replacement type surrounding rock body is matched with a subsequent anchor rod and grouting technology to construct a support group with better compressive strength, tensile strength and shear strength, the support effect is more stable than that of the existing support technology, but the support device still has some defects, such as: firstly, when the local pressure is great, the tunnel is very easy to have the bottom heave phenomenon, so that the clear cross-sectional area of the tunnel is reduced, the ventilation and transportation of the tunnel are influenced, and even the whole tunnel is scrapped.
SUMMERY OF THE UTILITY MODEL
To the problem of mentioning in the background art, the utility model aims at providing a strenghthened type colliery soft rock roadway support device to the problem of floor heave phenomenon very easily takes place in the tunnel when the local pressure is great mentioned in the solution background art.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a strenghthened type colliery soft rock roadway support device, includes the tunnel, the inside in tunnel is provided with U shaped steel support, still includes first stock, the U shaped steel support is fixed to be set up on the fixed beam, the lower extreme of fixed beam is provided with the arch support, the below of arch support is from last to having set gradually arched beam, metal mesh, bottom guniting layer down, first stock passes in proper order arched beam, metal mesh, bottom guniting layer extend into the rock mass of tunnel below, be provided with the crossbeam between the fixed beam, the upper end of first stock extends to crossbeam department and with the crossbeam is connected, the arched beam with it has concrete layer to fill between the crossbeam, the arched beam with be provided with the down tube of being connected with both between the crossbeam.
Further, still include the second stock, be provided with the lateral wall shotcrete layer on the inside wall in tunnel, the inboard on lateral wall shotcrete layer is provided with the anchor net, the anchor net correspond to the inboard of U shaped steel support is provided with U shaped steel board, and the one end and the lateral wall shotcrete layer of second stock are connected, and the other end of second stock passes anchor net, U shaped steel board in proper order and extends to the rock mass in tunnel, the inboard spraying of anchor net has the back up coat.
Through above-mentioned technical scheme, to utilizing stock, U shaped steel support, U shaped steel board to support the tunnel, change the mechanical state of country rock itself, form an integral and stable rock area around the tunnel, the existence on lateral wall shotcrete layer can seal the rock mass, the moisture exchange between isolated rock mass and air.
Further, the distance between the adjacent U-shaped steel supports is smaller than or equal to 3 m, and the distance between the adjacent cross beams is the same as the distance between the adjacent U-shaped steel supports.
Through above-mentioned technical scheme, to utilizing stock, U shaped steel support, U shaped steel board to support the tunnel, prevent that the tunnel from collapsing.
Furthermore, the U-shaped steel support is arranged in a hollow mode, and cement slurry is filled inside the U-shaped steel support.
Through above-mentioned technical scheme, can promote the bulk strength of U shaped steel support.
Furthermore, a connecting rod connected with the U-shaped steel support and the U-shaped steel support is arranged between the adjacent U-shaped steel supports.
Through above-mentioned technical scheme, utilize the connecting rod to couple together U shaped steel leg joint, prevent that U shaped steel leg joint from taking place the removal of horizontal direction.
Further, the fixed beam is the I-steel, the surface of fixed beam scribbles the anti-rust paint layer, the thickness less than or equal to 150 microns of anti-rust paint layer.
Through above-mentioned technical scheme, can effectually prevent that the fixed beam from taking place the corrosion, lead to the mechanical strength of fixed beam to descend.
To sum up, the utility model discloses mainly have following beneficial effect: the utility model discloses in, through setting up first stock, bottom shotcrete layer, arch support, metal mesh, arched beam and down tube, when using, form a whole and stable rock area around the tunnel, utilize the down tube to connect arched beam and crossbeam, support the arched beam, prevent that the arched beam from warping, concrete layer's existence can further promote the utility model discloses the intensity of bottom prevents that the condition of pucking from taking place.
Drawings
FIG. 1 is a front sectional view of the present embodiment;
fig. 2 is a left side sectional view of the present embodiment.
Reference numerals: 1. a roadway; 2. a U-shaped steel bracket; 3. a fixed beam; 4. an arched bracket; 5. an arched beam; 6. a metal mesh; 7. a bottom guniting layer; 8. a first anchor rod; 9. a concrete layer; 10. a diagonal bar; 11. a side wall guniting layer; 12. anchoring the net; 13. a U-shaped steel plate; 14. a reinforcement layer; 15. a cross beam; 16. a second anchor rod; 17. a connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 and 2, a reinforced coal mine soft rock roadway support device comprises a roadway 1, a U-shaped steel support 2 and a first anchor rod 8 are arranged inside the roadway 1, the U-shaped steel support 2 is fixedly arranged on a fixed beam 3, an arch support 4 is arranged at the lower end of the fixed beam 3, an arch beam 5, a metal mesh 6 and a bottom guniting layer 7 are sequentially arranged below the arch support 4 from top to bottom, the first anchor rod 8 sequentially penetrates through the arch beam 5, the metal mesh 6 and the bottom guniting layer 7 to extend into a rock mass below the roadway 1, a cross beam 15 is arranged between the fixed beams 3, the upper end of the first anchor rod 8 extends to the cross beam 15 and is connected with the cross beam 15, a concrete layer 9 is filled between the arch beam 5 and the cross beam 15, oblique rods 10 connected with the arch beam 5 and the cross beam 15 are arranged between the arch beam 5 and the cross beam 15, in the embodiment, the first anchor rods 8 are distributed below the roadway 1 at equal intervals, the bottom guniting layer 7 can connect broken stones at the bottom of the roadway 1 to form a whole body, subsequent construction is facilitated, strength of a rock stratum at the bottom of the roadway 1 can be increased, the rock mass can be sealed, moisture exchange between the rock mass and air is isolated, the cross beam 15 is connected with the fixed beam 3 through welding, the arched beam 5 is inverted arch-shaped, a good supporting effect can be achieved, roadway ground pressure strength can be effectively controlled, bottom bulging is effectively prevented, and the arched support 4 and the arched beam 5 are welded and fixed.
Referring to fig. 1 and 2, the anchor rod structure further comprises a second anchor rod 16, a side wall guniting layer 11 is arranged on the inner side wall of the roadway 1, an anchor net 12 is arranged on the inner side of the side wall guniting layer 11, a U-shaped steel plate 13 is arranged on the inner side of the anchor net 12 corresponding to the U-shaped steel support 2, one end of the second anchor rod 16 is connected with the side wall guniting layer 11, the other end of the second anchor rod 16 sequentially penetrates through the anchor net 12, the U-shaped steel plate 13 extends into a rock body of the roadway 1, a reinforcing layer 14 is sprayed on the inner side of the anchor net 12, the reinforcing layer 14 is made of concrete, and a plurality of steel bars can be placed inside the reinforcing layer for further improving the strength of the reinforcing layer 14.
Referring to fig. 1 and 2, the distance between adjacent U-shaped steel brackets 2 is less than or equal to 3 meters, and the distance between adjacent cross beams 15 is the same as the distance between adjacent U-shaped steel brackets 2, in this embodiment, the distance between adjacent U-shaped steel brackets 2 is two meters, and the distance between adjacent cross beams 15 is also two meters.
Referring to fig. 1 and 2, the U-shaped steel bracket 2 is hollow, and cement slurry is filled in the U-shaped steel bracket 2, and if the diameter of the U-shaped steel bracket 2 is large, concrete can be filled in the U-shaped steel bracket 2 to improve the strength of the U-shaped steel bracket 2.
Referring to fig. 1 and 2, a connecting rod 17 connected with the adjacent U-shaped steel brackets 2 is arranged between the two brackets.
Referring to fig. 1 and 2, the fixed beam 3 is an i-beam, the surface of the fixed beam 3 is coated with a layer of anti-corrosive paint, the thickness of the layer of anti-corrosive paint is 150 micrometers or less, and in this embodiment, the thickness of the layer of anti-corrosive paint on the outer layer of the fixed beam 3 is 150 micrometers.
In conclusion, by arranging the arched support 4, the arched beam 5, the bottom guniting layer 7, the first anchor rod 8, the metal net 6 and the inclined rod 10, when the device is used, an integral and stable rock belt is formed around the roadway 1, and the arched support 4, the arched beam 5 and the bottom guniting layer 7 are processed into an arch shape, so that the ground pressure strength of the roadway 1 can be effectively controlled, the floor of the roadway 1 is prevented from rising upwards, the floor heave control effect is good, and the floor heave can be effectively prevented.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; 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 (6)
1. The utility model provides a strenghthened type colliery soft rock roadway support device, includes tunnel (1), the inside in tunnel (1) is provided with U shaped steel support (2), its characterized in that: also comprises a first anchor rod (8), the U-shaped steel bracket (2) is fixedly arranged on the fixed beam (3), the lower end of the fixed beam (3) is provided with an arched bracket (4), the arched beam (5), the metal net (6) and the bottom guniting layer (7) are sequentially arranged below the arched bracket (4) from top to bottom, the first anchor rod (8) sequentially penetrates through the arched beam (5), the metal mesh (6) and the bottom guniting layer (7) and extends into a rock mass below the roadway (1), a cross beam (15) is arranged between the fixed beams (3), the upper end of the first anchor rod (8) extends to the cross beam (15) and is connected with the cross beam (15), a concrete layer (9) is filled between the arched beams (5) and the cross beams (15), and an inclined rod (10) connected with the arched beam (5) and the cross beam (15) is arranged between the arched beam and the cross beam.
2. The reinforced coal mine soft rock roadway support device according to claim 1, wherein: still include second stock (16), be provided with lateral wall shotcrete layer (11) on the inside wall in tunnel (1), the inboard of lateral wall shotcrete layer (11) is provided with anchor net (12), anchor net (12) correspond to the inboard of U shaped steel support (2) is provided with U shaped steel board (13), and the one end and the lateral wall shotcrete layer (11) of second stock (16) are connected, and the other end of second stock (16) passes anchor net (12), U shaped steel board (13) in proper order and extends to the rock mass in tunnel (1), anchor net (12) inboard spraying has back up coat (14).
3. The reinforced coal mine soft rock roadway support device according to claim 1, wherein: the distance between the adjacent U-shaped steel brackets (2) is less than or equal to 3 m, and the distance between the adjacent cross beams (15) is the same as the distance between the adjacent U-shaped steel brackets (2).
4. The reinforced coal mine soft rock roadway support device according to claim 1, wherein: the U-shaped steel support (2) is arranged in a hollow mode, and cement slurry is filled in the U-shaped steel support (2).
5. The reinforced coal mine soft rock roadway support device according to claim 1, wherein: and a connecting rod (17) connected with the U-shaped steel brackets (2) is arranged between the adjacent U-shaped steel brackets.
6. The reinforced coal mine soft rock roadway support device according to claim 1, wherein: the fixed beam (3) is the I-steel, the surface of fixed beam (3) scribbles the anti-rust paint layer, the thickness less than or equal to 150 microns of anti-rust paint layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221140883.2U CN217151991U (en) | 2022-05-13 | 2022-05-13 | Reinforced coal mine soft rock roadway supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221140883.2U CN217151991U (en) | 2022-05-13 | 2022-05-13 | Reinforced coal mine soft rock roadway supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217151991U true CN217151991U (en) | 2022-08-09 |
Family
ID=82665718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221140883.2U Expired - Fee Related CN217151991U (en) | 2022-05-13 | 2022-05-13 | Reinforced coal mine soft rock roadway supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217151991U (en) |
-
2022
- 2022-05-13 CN CN202221140883.2U patent/CN217151991U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |