CN221032634U - Micro-arched pi-shaped steel grouting supporting beam - Google Patents
Micro-arched pi-shaped steel grouting supporting beam Download PDFInfo
- Publication number
- CN221032634U CN221032634U CN202322273559.9U CN202322273559U CN221032634U CN 221032634 U CN221032634 U CN 221032634U CN 202322273559 U CN202322273559 U CN 202322273559U CN 221032634 U CN221032634 U CN 221032634U
- Authority
- CN
- China
- Prior art keywords
- beam body
- grouting
- main body
- arched
- shaped steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008093 supporting effect Effects 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005065 mining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The upper beam body and the lower beam body are both made of pi-shaped steel and are of structures with the middle parts arched upwards; the upper beam body and the lower beam body are buckled relatively, one end part of two wing plates at the lower part of the upper beam body are respectively and tightly attached to two end parts of two wing plates at the upper part of the lower beam body, and are connected in a welding mode to form a beam main body, a waist plate I of the upper beam body is used as an upper bearing surface of the beam main body, a waist plate II of the lower beam body is used as a lower bearing surface of the beam main body, and the connected wing plates at the same side of the upper beam body and the lower beam body are used as side supporting plates of the beam main body; a plurality of grouting openings are formed in the side supporting plate on one side of the beam main body along the length direction; the number of the grouting pipes is the same as that of the grouting holes, and one end of each grouting pipe is vertically and fixedly connected to the grouting opening; the two end plates are respectively and fixedly packaged at openings at two ends of the beam main body. The device has higher supporting rigidity, and simultaneously, the device has good bending resistance, torsion resistance and shearing strength and high stability.
Description
Technical Field
The utility model belongs to the technical field of coal mine roadway support, and particularly relates to a micro-arch pi-shaped steel grouting support beam.
Background
As coal resources continue to be mined, reserves of shallow coal resources are decreasing year by year, and for this reason, coal mining enterprises have to perform deeper mining operations. Under deep conditions, the geological conditions are poor, the geographical environment is complex, the frequency and the intensity of rock burst are increased, and roadway support damage, collapse and casualties are easy to occur, so that the safety production of a coal mine is seriously affected.
At present, the support of broken surrounding rock tunnels and rock burst tunnels is always a difficult problem for preventing the safe and efficient exploitation of mines. For broken roof support, under the action of high stress, the rock mass cracks of the roadway can be continuously expanded, so that great difficulty is brought to roadway support, the traditional anchor bolt support mode is not ideal in effect, and part of the roadway is often involved in continuously reworking vicious cycles. Meanwhile, when a roadway is tunneled under the condition of a broken roof, the roadway is influenced by superposition of factors such as ground stress, tunneling disturbance and roof breaking, roof falling, roof leakage and the like are easy to occur, so that the broken roof is supported by using the traditional anchor bolt support, the support effect is not ideal, and the normal and safe production work of a coal mine cannot be effectively ensured. For impact roadway support, at present, one or more of traditional supports such as anchor rods, anchor ropes, grouting, anchor net spraying, anchor injection and steel arches are used in combination so as to achieve the purpose of reinforcing the support, however, the traditional support mode is insufficient in support rigidity, deformation of surrounding rocks of the roadway cannot be effectively controlled, in the deep mining process, dynamic phenomena of coal rocks often release a large amount of impact energy, the impact energy frequently impacts a support structure, and the impact energy is limited by the defect of the traditional mode support rigidity and can cause instability and damage of the support structure in the impact process. Therefore, there is a need to provide a supporting device with simple structure, ideal supporting effect and strong supporting rigidity, so as to effectively ensure the safe production work of coal mines.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the micro-arch pi-shaped steel grouting supporting beam which is simple in structure, low in manufacturing cost, high in supporting rigidity, good in bending resistance, torsion resistance and shearing resistance and high in stability, the integrity of a top plate can be effectively ensured, and the safety production requirement of a coal mine at the present stage can be effectively met.
The utility model provides a micro-arched pi-shaped steel grouting support beam, which comprises an upper beam body, a lower beam body, grouting pipes and end plates;
The upper beam body is made of a section of pi-shaped steel, the opening end of the upper beam body is arranged downwards, and the upper beam body is of an arc-shaped structure with the middle part arched upwards; the lower beam body is made of a section of pi-shaped steel, the opening end of the lower beam body is upwards, the lower beam body is of an arc-shaped structure with the middle part upwards arched, meanwhile, the curvature of the lower beam body is matched with the curvature of the upper beam body, and the length of the lower beam body is matched with the length of the upper beam body; the upper beam body and the lower beam body are arranged in a buckled manner relative to each other, one end part of two wing plates at the lower part of the upper beam body are respectively tightly attached to two end parts of two wing plates at the upper part of the lower beam body and are fixedly connected in a welding manner to form a beam main body, wherein a waist plate I of the upper beam body is used as an upper bearing surface of the beam main body, a waist plate II of the lower beam body is used as a lower bearing surface of the beam main body, and the wing plates connected at the same side of the upper beam body and the lower beam body are used as side supporting plates of the beam main body;
A plurality of grouting openings communicated with the inner cavity of the cross beam body are formed in the side supporting plate on one side along the length direction;
The number of the grouting pipes is the same as that of the grouting holes, the grouting pipes are arranged in a one-to-one correspondence manner, and one end of each grouting pipe is vertically and fixedly connected to the grouting opening;
The size of the end plate is matched with the size of the opening at the end part of the beam main body, and the two end plates are respectively and fixedly packaged at the openings at the two end parts of the beam main body.
Further, in order to ensure the plugging strength, the end plate is a square steel plate.
Preferably, the plurality of grouting pipes are uniformly distributed along the length direction of the beam body.
Further, in order to ensure the integral connection strength, the end plates are fixedly packaged at the opening of the end part of the beam main body in a welding mode.
Further, in order to be able to more fully fit the roof of the roadway so as to promote the supporting effect, the bending radian of the upper beam body and the lower beam body is greater than 0 and less than 30 degrees.
Further, in order to ensure grouting efficiency, the supporting rigidity of the beam main body can be effectively ensured, and the number of grouting holes is 2-5.
Preferably, each grouting hole is positioned at the junction of the upper beam body and the lower beam body.
According to the utility model, two sections of arc-shaped bent pi-shaped steel are buckled relatively, the beam main body is formed in a welding mode, meanwhile, two end plates are packaged at two end parts of the beam main body to form the supporting beam, and a closed accommodating cavity can be formed in the formed supporting beam, so that grouting materials can be conveniently carried. A plurality of grouting holes are formed in the side supporting plate of the beam main body, meanwhile, a plurality of grouting pipes are vertically and fixedly connected to the grouting holes, grouting materials can be conveniently filled into the closed accommodating cavity by the grouting pipes, and accordingly the solidified grouting materials and the supporting beam are used as supporting bodies together, rigidity of the supporting bodies is greatly improved, high-strength supporting of a top plate of a roadway is facilitated, supporting effect is remarkably improved, and safe production requirements of a coal mine are effectively met. The supporting beam is simple in structure, low in manufacturing cost, high in supporting rigidity, good in bending resistance, torsion resistance and shearing strength and high in stability, the integrity of the top plate can be effectively guaranteed, the supporting effect on the weak top plate and the broken top plate is good, the impact disturbance resistance of surrounding rocks can be effectively enhanced, the stability of the surrounding rocks is improved, and the supporting beam is suitable for supporting a large-deformation roadway of the top plate.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model.
In the figure: 1. the upper beam body 2, the lower beam body 3, the grouting pipe 4, the wing plate I, the wing plate 5, the end plate 6, the beam main body 7, the wing plate II, the waist plate 8, the waist plate I, the waist plate 9 and the waist plate II.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a micro-arched pi-shaped steel grouting support beam, which comprises an upper beam body 1, a lower beam body 2, a grouting pipe 3 and an end plate 5;
The upper beam body 1 is made of a section of pi-shaped steel, the opening end of the upper beam body 1 is arranged downwards, and the upper beam body is of an arc-shaped structure with the middle part arched upwards; the lower beam body 2 is made of a section of pi-shaped steel, the opening end of the lower beam body 2 is upwards, the lower beam body 2 is of an arc-shaped structure with the middle part upwards arched, meanwhile, the curvature of the lower beam body 2 is matched with the curvature of the upper beam body 1, and the length of the lower beam body 2 is matched with the length of the upper beam body 1; the upper beam body 1 and the lower beam body 2 are arranged in a buckled manner relative to each other, the end parts of two wing plates I4 at the lower part of the upper beam body 1 are respectively tightly attached to the end parts of two wing plates II 7 at the upper part of the lower beam body 2, and are fixedly connected in a welding manner to form a beam main body 6, wherein a waist plate I8 of the upper beam body 1 is used as an upper bearing surface of the beam main body 6, a waist plate II 9 of the lower beam body 2 is used as a lower bearing surface of the beam main body 6, and the connected wing plates at the same side of the upper beam body 1 and the lower beam body 2 are used as side supporting plates of the beam main body 6;
The side support plate on one side of the beam main body 6 is provided with a plurality of grouting openings communicated with the inner cavity of the beam main body along the length direction;
The number of the grouting pipes 3 is the same as that of the grouting holes, the grouting pipes are arranged in a one-to-one correspondence manner, and one end of each grouting pipe 3 is vertically and fixedly connected to the grouting opening;
The size of the end plates 5 is matched with the size of the opening at the end part of the beam main body 6, and the two end plates 5 are respectively and fixedly packaged at the openings at the two end parts of the beam main body 6.
In order to ensure the plugging strength, the end plate 5 is a square steel plate.
Preferably, the plurality of grouting pipes 3 are uniformly distributed along the length direction of the beam main body 6.
In order to ensure the integral connection strength, the end plate 5 is fixedly packaged at the opening of the end part of the beam main body 6 in a welding mode.
In order to be more fully attached to the top plate of the roadway so as to improve the supporting effect, the bending radian of the upper beam body 1 and the lower beam body 2 is more than 0 and less than 30 degrees. Specifically, the curvature of the upper beam body 1 and the lower beam body 2 may be determined according to the roof conditions of the application site.
In order to ensure grouting efficiency, the support rigidity of the beam main body can be effectively ensured, and the number of grouting holes is 2-5.
Preferably, each grouting hole is positioned at the junction of the upper beam body 1 and the lower beam body 2.
When the grouting device is used, the supporting beam is attached to the roadway roof for installation, after the installation is completed, grouting materials (high-strength cement base, polymer base and silicate base can be selected as grouting materials) are filled into the accommodating cavity of the supporting beam by using the grouting pipe 3, after the grouting materials are solidified, the grouting materials and the supporting beam made of pi-shaped steel form a supporting body together, and the roadway roof is reliably supported.
According to the utility model, two sections of arc-shaped bent pi-shaped steel are buckled relatively, the beam main body is formed in a welding mode, meanwhile, two end plates are packaged at two end parts of the beam main body to form the supporting beam, and a closed accommodating cavity can be formed in the formed supporting beam, so that grouting materials can be conveniently carried. A plurality of grouting holes are formed in the side supporting plate of the beam main body, meanwhile, a plurality of grouting pipes are vertically and fixedly connected to the grouting holes, grouting materials can be conveniently filled into the closed accommodating cavity by the grouting pipes, and accordingly the solidified grouting materials and the supporting beam are used as supporting bodies together, rigidity of the supporting bodies is greatly improved, high-strength supporting of a top plate of a roadway is facilitated, supporting effect is remarkably improved, and safe production requirements of a coal mine are effectively met. The supporting beam is simple in structure, low in manufacturing cost, high in supporting rigidity, good in bending resistance, torsion resistance and shearing strength and high in stability, the integrity of the top plate can be effectively guaranteed, the supporting effect on the weak top plate and the broken top plate is good, the impact disturbance resistance of surrounding rocks can be effectively enhanced, the stability of the surrounding rocks is improved, and the supporting beam is suitable for supporting a large-deformation roadway of the top plate.
Claims (7)
1. The micro-arched pi-shaped steel grouting support cross beam comprises an upper beam body (1) and a lower beam body (2) and is characterized by further comprising a grouting pipe (3) and an end plate (5);
the upper beam body (1) is made of a section of pi-shaped steel, the opening end of the upper beam body (1) is arranged downwards, and the upper beam body is of an arc-shaped structure with the middle part arched upwards; the lower beam body (2) is made of a section of pi-shaped steel, the opening end of the lower beam body (2) is upwards arranged, the lower beam body is of an arc-shaped structure with the middle part upwards arched, meanwhile, the curvature of the lower beam body (2) is matched with the curvature of the upper beam body (1), and the length of the lower beam body (2) is matched with the length of the upper beam body (1); the upper beam body (1) and the lower beam body (2) are oppositely buckled, the end parts of two wing plates I (4) at the lower part of the upper beam body (1) are respectively tightly attached to the end parts of two wing plates II (7) at the upper part of the lower beam body (2), and are fixedly connected in a welding mode to form a beam main body (6), wherein a waist plate I (8) of the upper beam body (1) is used as an upper bearing surface of the beam main body (6), a waist plate II (9) of the lower beam body (2) is used as a lower bearing surface of the beam main body (6), and the wing plates connected at the same side of the upper beam body (1) and the lower beam body (2) are used as side supporting plates of the beam main body (6);
A plurality of grouting openings communicated with the inner cavity of the cross beam main body (6) are formed in the side supporting plate on one side along the length direction;
The number of the grouting pipes (3) is the same as that of the grouting holes, the grouting pipes are arranged in one-to-one correspondence, and one end of each grouting pipe (3) is vertically and fixedly connected to the grouting opening;
The size of the end plates (5) is matched with the size of the opening at the end part of the beam main body (6), and the two end plates (5) are respectively and fixedly packaged at the openings at the two end parts of the beam main body (6).
2. A micro-arched pi-shaped steel grouting support beam as claimed in claim 1, wherein the end plate (5) is a square steel plate.
3. A micro arched pi shaped steel grouting support beam according to claim 1 or 2, wherein the grouting pipes (3) are evenly distributed along the length of the beam body (6).
4. A micro-arched pi-shaped steel grouting support beam according to claim 3, wherein the end plate (5) is fixedly sealed at the end opening of the beam main body (6) in a welding mode.
5. The micro arched pi steel grouting support beam as claimed in claim 4, wherein the bending radian of the upper beam body (1) and the lower beam body (2) is more than 0 and less than 30 degrees.
6. The micro arched pi steel grouting support beam of claim 5, wherein the number of grouting holes is 2-5.
7. A micro arch pi shaped steel grouting support beam according to claim 6, wherein each grouting hole is located at the junction of the upper beam body (1) and the lower beam body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273559.9U CN221032634U (en) | 2023-08-23 | 2023-08-23 | Micro-arched pi-shaped steel grouting supporting beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273559.9U CN221032634U (en) | 2023-08-23 | 2023-08-23 | Micro-arched pi-shaped steel grouting supporting beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221032634U true CN221032634U (en) | 2024-05-28 |
Family
ID=91177053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322273559.9U Active CN221032634U (en) | 2023-08-23 | 2023-08-23 | Micro-arched pi-shaped steel grouting supporting beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221032634U (en) |
-
2023
- 2023-08-23 CN CN202322273559.9U patent/CN221032634U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102140924B (en) | Double-shell coupling supporting method of deep soft rock tunnel | |
| CN113090284B (en) | Roadway support method for soft and broken rock mass of underground mine | |
| CN108930543A (en) | A kind of big cross section gob side entry driving coupling supporting structure and construction method | |
| CN110130978B (en) | Method for plugging broken coal side of thick coal seam in broken area of filling and re-mining small kiln | |
| CN110656936A (en) | Mine roof directional roof cutting pressure relief method based on static expanding agent | |
| CN105019924A (en) | Strong roof support pier column and method for protecting section coal pillar | |
| CN102704965A (en) | Method for preventing tunnel top plate collapse risk caused by severe mining | |
| CN109779652A (en) | A kind of expansion of coal-mine soft-rock tailentry is repaired and method for protecting support | |
| CN207229125U (en) | A kind of thrust device for being exclusively used in concrete filled steel tube pier stud | |
| CN107780942B (en) | Novel prefabricated assembled pipe shed for pre-reinforcing soft soil tunnel and manufacturing process thereof | |
| CN110566236A (en) | Pipe shed and steel support combined supporting device and supporting method | |
| CN109958454A (en) | Stope drift active workings pucking control system and its control method | |
| CN221032634U (en) | Micro-arched pi-shaped steel grouting supporting beam | |
| CN104790991A (en) | Mining roadway surrounding rock strong and long top anchoring technology | |
| CN106761841A (en) | Working face tailgate fractured coal grouting reinforcement method | |
| CN116464453A (en) | Construction method for quick turning of hard rock tunnel through one-time roof picking | |
| CN115324623A (en) | Advanced supporting method for deep broken rock mass roadway of metal ore | |
| CN210622819U (en) | Pipe shed and steel support combined supporting device | |
| CN110593922B (en) | Construction method for reinforcing roadway roof by embedded FRP (fiber reinforced Plastic) reinforcements | |
| CN104265329B (en) | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock | |
| CN113605951A (en) | Shallow tunnel supporting structure and construction method thereof | |
| CN113294178A (en) | Combined support system for extremely-broken surrounding rock tunnel and construction method thereof | |
| CN206419043U (en) | A kind of tunnel changes arch construction supporting structure | |
| CN117552813B (en) | Surrounding rock reinforcement construction method for deep roadway | |
| CN221074288U (en) | Primary support structure suitable for long-distance shallow-buried mudstone tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |