CN220451897U - Bottom bulge preventing supporting structure of roadway floor - Google Patents
Bottom bulge preventing supporting structure of roadway floor Download PDFInfo
- Publication number
- CN220451897U CN220451897U CN202322002202.7U CN202322002202U CN220451897U CN 220451897 U CN220451897 U CN 220451897U CN 202322002202 U CN202322002202 U CN 202322002202U CN 220451897 U CN220451897 U CN 220451897U
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- Prior art keywords
- arch
- roadway
- end arch
- bottom plate
- reinforced concrete
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- 230000003405 preventing effect Effects 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 8
- 230000002265 prevention Effects 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 101150097977 arch-1 gene Proteins 0.000 description 29
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Road Paving Structures (AREA)
Abstract
The application discloses a bottom bulge supporting construction prevents of tunnel bottom plate, including anti-end arch, anti-end arch sets up in the top of tunnel bottom plate, anti-end arch is the arc, its arc top sets up downwards, its anti intensity that forms upward pressure by the bottom bulge is big, utilize anti-end arch's compressive resistance, the intensity of tunnel bottom plate has been increased, better bear tunnel pressure, reduce the bottom bulge volume, anti-end arch's top is provided with the reinforcing bar net, the reinforcing bar net is unanimous with anti-end arch radian, the reinforcing bar net can improve tunnel anti-seismic crack resistance, at reinforcing bar net fixed mounting has the screw-thread steel, improve the compressive strength of reinforcing bar net through the screw-thread steel, anti-end arch's below is provided with reinforced concrete layer, reinforced concrete layer is located the horizontal recess of tunnel bottom plate, reinforced concrete layer's compressive strength is big, reinforced concrete layer and anti-end arch are to the holistic reinforcing supporting construction of tunnel bottom plate.
Description
Technical Field
The application relates to the technical field of roadway floor support, in particular to a bottom bulging prevention support structure of a roadway floor.
Background
The phenomenon that the bottom plate of the roadway bulges upwards is called a floor heave because the top bottom plate of the roadway and the two rock masses of the roadway deform and displace into the roadway under the influence of the mining engineering. The tunnel section that the billow caused reduces, hinders transportation and pedestrian, hinders mine ventilation for many mines have to put into a large amount of manpower and material resources and do temporary treatment work such as "dig the bottom" with.
At present, the tunnel floor heave is seriously influenced by the dynamic pressure and the burial depth of a coal mine underground permanent tunnel, the tunnel floor heave is seriously reduced by drilling anchor rods, ropes and grouting reinforcement after the floor is used. However, the anchor rod is arranged at the bottom or grouting reinforcement can be maintained for a short time, and can be repeatedly deformed once the roadway is influenced by mining, so that normal use is influenced, the problem can not be fundamentally solved due to repeated maintenance of the roadway, and the material loss is large, so that personnel labor organization is frequently mobilized.
Disclosure of Invention
The application provides a tunnel bottom plate prevent end bulge supporting construction, it is serious to have solved tunnel end bulge among the prior art, uses to beat to establish stock or slip casting reinforcement can only maintain the shorter time, causes the material loss great, and personnel's labor organization transfers frequent problem.
For solving above-mentioned technical problem, this application provides a bottom bulge supporting construction is prevented to tunnel bottom plate, including tunnel bottom plate and anti-end arch, anti-end arch sets up the top of tunnel bottom plate, the top of anti-end arch is provided with the reinforcing bar net, the reinforcing bar net with anti-end arch radian is unanimous, fixed mounting has screw steel on the reinforcing bar net, the top of reinforcing bar net is provided with the overburden, the below of anti-end arch is provided with reinforced concrete layer, reinforced concrete layer is located in the horizontal recess of tunnel bottom plate, the stock hole has been seted up on the anti-end arch, is provided with the stock in the stock hole, stretches into after the free end of stock passes reinforced concrete layer the tunnel bottom plate.
As a preferred embodiment, a clip is provided between the anchor rod and the counter bottom arch.
As a preferred embodiment, the reinforcing mesh is provided with two layers.
As a preferred embodiment, the screw-thread steel includes a transverse screw-thread steel and a longitudinal screw-thread steel.
As a preferred embodiment, the cover layer is further provided with a ditch template.
In a preferred embodiment, the cover layer is a gangue.
As a preferred embodiment, a cushion pad is further provided between the counter arch and the reinforced concrete layer.
In a preferred embodiment, the cushion pad is a polyurethane pad.
The utility model provides a pair of tunnel bottom plate prevent end bulge supporting construction, including anti-end arch, anti-end arch sets up in the top of tunnel bottom plate, anti-end arch is the arc, its arc top sets up downwards, its anti intensity that forms upward pressure by end bulge is big, utilize anti-end arch's compressive resistance, the intensity of tunnel bottom plate has been increased, better bear tunnel pressure, reduce end bulge volume, anti-end arch's top is provided with the reinforcing bar net, the reinforcing bar net is unanimous with anti-end arch radian, the reinforcing bar net can improve tunnel anti-seismic crack resistance, fixed mounting has the screw-thread steel on the reinforcing bar net, improve the compressive strength of reinforcing bar net through the screw-thread steel, anti-end arch's below is provided with reinforced concrete layer, reinforced concrete layer is located the horizontal recess of tunnel bottom plate, reinforced concrete layer's compressive strength is big, reinforced concrete layer and anti-end arch are to the holistic reinforcing support structure of tunnel bottom plate.
Compared with the prior art, the beneficial effects of this application are:
1. the roadway bottom plate adopts the anti-bottom arch supporting structure and forms a whole with the roadway bottom plate, so that the strength of the roadway bottom plate is increased, the roadway pressure is better born, and the bottom bulging amount is reduced.
2. The anti-bottom arch, the reinforcing mesh, the screw steel and the roadway bottom plate form an integral structure to resist the pressure applied to the roadway bottom plate, repeated maintenance of the roadway is avoided once and for all, the maintenance time of the roadway is saved, the situation of continuous tension of mining is relieved to a great extent, and the material and labor cost of repeated maintenance of the roadway are reduced.
Drawings
For a clearer description of the technical solutions of the present application, the drawings that are required to be used in the embodiments will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without making any effort.
Fig. 1 is a schematic view of a bottom bulging prevention support structure of a roadway floor according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
in the figure: 1. a reverse bottom arch; 2. transverse screw thread steel; 3. longitudinal screw steel; 4. a reinforcing mesh; 5. a bolt; 6. a clamp; 7. a cover layer; 8. a gutter template; 9. a reinforced concrete layer; 10. a cushion pad; 11. roadway floor.
Detailed Description
In order to better understand the technical solutions in the present application, the following description will be made in detail with reference to the accompanying drawings.
The core of the application is to provide a tunnel bottom plate prevent foundation pit supporting construction, can solve among the prior art tunnel foundation pit seriously, uses to beat to establish stock or slip casting reinforcement can only maintain for a short time, causes the material loss great, and personnel's labor organization transfers frequent problem.
Fig. 1 is a schematic view of a bottom bulging prevention support structure of a roadway floor according to an embodiment of the present utility model, and is shown in fig. 1.
The utility model provides a tunnel bottom plate prevent end bulge supporting construction, including tunnel bottom plate 11 and anti-end arch 1, anti-end arch 1 is fixed in the top of tunnel bottom plate 11, anti-end arch 1 is the arc, its arc top sets up downwards, its anti intensity that forms upward pressure by end bulge is big, anti-end arch 1 can adopt U shaped steel to make, tensile, resistance to compression, bending strength are higher, toughness is higher, can withstand the impact, set up anti-end arch 1 in tunnel bottom plate 11 top, utilize anti-end arch 1's resistance to compression, increased tunnel bottom plate 11's intensity, better bear tunnel pressure, reduce the end bulge volume. The reinforcing mesh 4 is arranged above the inverted arch 1, the radian of the reinforcing mesh 4 is consistent with that of the inverted arch 1, the grid of the reinforcing mesh 4 is square with the side length of 200mm, the mesh of the reinforcing mesh 4 is high in rigidity and elasticity, the distance is uniform and accurate, and the reinforcing mesh 4 can improve the anti-seismic and anti-cracking performance of a roadway and ensure the engineering quality.
In order to strengthen the intensity of the reinforcing steel bar net 4, screw thread steel is fixedly arranged on the reinforcing steel bar net 4, the compressive strength of the reinforcing steel bar net 4 is improved through the screw thread steel, a covering layer 7 is arranged above the reinforcing steel bar net 4, and as a preferable implementation mode, the covering layer 7 is gangue, the gangue has stronger intensity, people and vehicles can conveniently pass through a roadway, a reinforced concrete layer 9 is arranged below the reverse bottom arch 1, the reinforced concrete layer 9 is positioned in a transverse groove of the roadway bottom plate 11, the compressive strength of the reinforced concrete layer 9 is high, and the reinforced concrete layer 9 and the reverse bottom arch 1 form a reinforced supporting structure for the whole roadway bottom plate 11. The anti-bottom arch 1, the reinforcing mesh 4, the screw steel and the roadway bottom plate 11 form an integral structure to resist the pressure applied to the roadway bottom plate 11, so that repeated maintenance of the roadway is avoided once and for all, the maintenance time of the roadway is saved, the situation of continuous tension of excavation is relieved to a great extent, and the material and labor cost of repeated maintenance of the roadway are reduced.
As a preferred embodiment, a cushion pad 10 is further arranged between the reverse bottom arch 1 and the reinforced concrete layer 9, the cushion pad 10 is an arc cushion pad with the same radian as that of the reverse bottom arch 1, the cushion pad 10 is positioned between the reverse bottom arch 1 and the reinforced concrete layer 9, and plays a role of buffering stress, so that the upper surface of the reinforced concrete layer 9 is prevented from being crushed by the reverse bottom arch 1, and the compression resistance of the reverse bottom arch 1 is reduced. The anchor rod hole is formed in the reverse bottom arch 1, the anchor rod 5 is arranged in the anchor rod hole, the free end of the anchor rod 5 penetrates through the reinforced concrete layer 9 and then stretches into the roadway bottom plate 11, namely, the reverse bottom arch 1 and the roadway bottom plate 11 form an integral and stable rock band through the anchor rod 5, passive support is changed into active support, the support effect on the roadway bottom plate 11 is greatly improved, and the bottom bulge preventing effect is good.
Preferably, the cushion pad 10 is a polyurethane pad, and the polyurethane material has excellent elasticity and shock absorbing properties so that it can be effectively used to absorb and consume impact and vibration force, thereby reducing or eliminating impact and frictional wear to which the reinforced concrete layer 9 is subjected.
In order to further increase the stability between the anchor rods 5 and the counter bottom arch 1, as a preferred embodiment, a clip 6 is provided between the anchor rods 5 and the counter bottom arch 1 for reinforcing the connection between the anchor rods 5 and the counter bottom arch 1. The reinforcing anchor rods 5 are fixed on the anti-bottom arch 1 through the clamp 6, so that the anti-bottom arch 1 and the roadway floor 11 form an integral and stable rock band through the anchor rods 5.
As the preferable implementation mode, the reinforcing steel bar net 4 is provided with two layers, and screw steels are arranged above the two layers of reinforcing steel bar net 4, so that the anti-seismic and anti-cracking performance of the roadway is improved, and the bottom bulging prevention effect is good.
In this embodiment, as a preferred embodiment, the threaded steel comprises a transverse threaded steel 2 and a longitudinal threaded steel 3, and when in actual arrangement, the transverse threaded steel 2 can be firstly installed on the reinforcing mesh 4, then the longitudinal threaded steel 3 is installed, then the second transverse threaded steel 2 is installed, and then the second longitudinal threaded steel 3 is installed, so that the whole supporting strength is improved through the threaded steel in a circulating way.
As a preferable implementation mode, the covering layer 7 is also provided with a ditch template 8, and the ditch template 8 can play roles in water stopping and water proofing and has good bottom drum prevention effect.
According to the anti-floor-bulging supporting structure of the roadway bottom plate, in actual use, the cross section size of an excavated working surface is measured to determine supporting parameters, a U-shaped steel bottom beam is processed into an arch shape according to a set radian to obtain an anti-floor arch 1, a reinforced concrete layer 9 is sprayed on the roadway bottom plate 11, then a buffer pad 10 is paved, the anti-floor arch 1 is arranged on the buffer pad 10 to perform primary supporting, meanwhile anchor rods 5 are arranged, two ends of the anti-floor arch 1 are fixed on two sides of a roadway through a clamp 6, a double-layer reinforcing steel mesh 4 is arranged above the anti-floor arch 1, the radian of the reinforcing steel mesh 4 is consistent with that of the anti-floor arch 1, a first transverse screw steel 2 and a first longitudinal screw steel 3 are firstly arranged above the reinforcing steel mesh 4, a second transverse screw steel 2 and a second longitudinal screw steel 3 are arranged, so that circulation is performed, and the compressive strength of the reinforcing steel mesh 4 is further improved, and finally a cover layer 7 is paved above the reinforcing steel mesh 4, so that the structural stability of the roadway bottom plate 11 can be improved, the roadway bottom plate 11 is prevented from deforming and bulging, and the safety of the roadway structure is ensured; after the installation of the bottom-bulging-prevention supporting structure is completed, grouting anchor ropes and grouting operation are arranged, then, a ditch is supported according to design requirements, the inverted bottom arch 1, the reinforcing steel bar net 4, the threaded steel and the roadway bottom plate 11 form an integral structure to resist the pressure born by the roadway bottom plate 11, repeated maintenance of the roadway is avoided once and for all, the maintenance time of the roadway is saved, the situation of continuous tension in excavation is relieved to a great extent, and the material and labor cost of repeated maintenance of the roadway are reduced.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The above-described embodiments of the present application are not intended to limit the scope of the present application.
Claims (8)
1. The utility model provides a bottom bulge supporting construction is prevented to tunnel bottom plate which characterized in that includes:
roadway floor (11) and anti-end arch (1), anti-end arch (1) set up the top of roadway floor (11), the top of anti-end arch (1) is provided with reinforcing bar net (4), reinforcing bar net (4) with anti-end arch (1) radian is unanimous, fixed mounting has screw steel on reinforcing bar net (4), the top of reinforcing bar net (4) is provided with overburden (7), the below of anti-end arch (1) is provided with reinforced concrete layer (9), reinforced concrete layer (9) are located in the transverse groove of roadway floor (11), the stock hole has been seted up on anti-end arch (1), is provided with stock (5) in the stock hole, stretches into after the free end of stock (5) passes reinforced concrete layer (9) to roadway floor (11).
2. The bottom-bulging-preventing supporting structure of roadway floor according to claim 1, wherein a clamp (6) is arranged between the anchor rod (5) and the anti-bottom arch (1).
3. The floor-heave prevention support structure of a roadway floor according to claim 1, characterized in that the reinforcement mesh (4) is provided with two layers.
4. A floor-heave prevention support structure for a roadway floor according to claim 3, characterized in that the screw-thread steel comprises a transverse screw-thread steel (2) and a longitudinal screw-thread steel (3).
5. The floor heave prevention support structure of a roadway floor according to claim 1, characterized in that the covering layer (7) is further provided with a ditch template (8).
6. The floor-heave prevention supporting structure of a roadway floor according to claim 1, characterized in that the covering layer (7) is gangue.
7. The bottom-bulging-preventing supporting structure of roadway floor according to claim 1, wherein a cushion pad (10) is further arranged between the reverse bottom arch (1) and the reinforced concrete layer (9).
8. The floor-heave prevention support structure of a roadway floor according to claim 7, characterized in that the cushion pad (10) is a polyurethane pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322002202.7U CN220451897U (en) | 2023-07-28 | 2023-07-28 | Bottom bulge preventing supporting structure of roadway floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322002202.7U CN220451897U (en) | 2023-07-28 | 2023-07-28 | Bottom bulge preventing supporting structure of roadway floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220451897U true CN220451897U (en) | 2024-02-06 |
Family
ID=89725000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322002202.7U Active CN220451897U (en) | 2023-07-28 | 2023-07-28 | Bottom bulge preventing supporting structure of roadway floor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220451897U (en) |
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2023
- 2023-07-28 CN CN202322002202.7U patent/CN220451897U/en active Active
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| GR01 | Patent grant | ||
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