CN218439391U - Roadway supporting structure - Google Patents
Roadway supporting structure Download PDFInfo
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- CN218439391U CN218439391U CN202222579299.3U CN202222579299U CN218439391U CN 218439391 U CN218439391 U CN 218439391U CN 202222579299 U CN202222579299 U CN 202222579299U CN 218439391 U CN218439391 U CN 218439391U
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- steel pipe
- roadway
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- layer
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 239000011435 rock Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011378 shotcrete Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a roadway supporting structure, which comprises a grouting layer, a first guniting layer and a metal anchor net which are sequentially distributed on the inner wall of a roadway from outside to inside, wherein a plurality of arched steel belts are arranged on the inner side of the metal anchor net along the length direction of the roadway, the arched steel belts are fixedly connected with the grouting layer, the first guniting layer and the metal anchor net through anchor rods, and the inner side of each arched steel belt is fixedly connected with a steel pipe bracket; the utility model discloses an adopt a plurality of to support in proper order fixed connection's steel pipe support through the connecting rod in the tunnel, the use of cooperation arch steel band and metal anchor net, can be for being in loosely, the regional tunnel of broken rock mass provides stable support, and by the bottom tube, the steel pipe support's that standpipe and arch push pipe are constituteed simple structure, easily splice fast through anchor clamps, it is low to the space requirement of construction, can inject the concrete in the steel pipe support after accomplishing the concatenation and consolidate, thereby further improve steel pipe support's intensity, excellent in use effect.
Description
Technical Field
The utility model relates to a supporting construction specifically is a tunnel supporting construction.
Background
Roadways are various passages drilled between the earth's surface and the ore body for transporting ore, ventilating, draining water, pedestrians, and various necessary preparation works newly excavated for mining ore from metallurgical equipment, etc.
In the mining and tunneling process of an underground roadway of a mine, the underground roadway usually encounters the condition that rocks are extremely loose and broken, the number of crack surfaces is large, green curtain petrochemical cracked rocks are filled in cracks, and marbles are filled locally, the interface is irregular, the strength of the rocks is almost zero, the rocks are subjected to argillization when meeting water, the integrity is extremely poor, the self-stability capability is not realized, and the roadway excavation surface is easy to collapse.
Through the retrieval, the patent of publication No. CN 209129645U discloses a roadway support device, the device's structural connection mode adopts the mode of scarf joint, it is connected to have the reinforcement connecting rod between the adjacent support simultaneously, structural stability is high, simple to operate simultaneously, the branch type hunch post at top can be under the equal quantity of pillar simultaneously, increase the support to the top surface of roadway, form comparatively inseparable bearing structure, the effectual problem of having solved current support and not being applicable to broken zone tunnel, can be applicable to ordinary tunnel and broken zone tunnel.
However, the inner space of the roadway in the excavation process is limited, the number of parts is large, the structure is complex, the limitation caused by insufficient operation space is easy to occur when splicing is carried out in the roadway, the construction difficulty is high, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tunnel supporting construction to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a roadway support structure, includes the slip casting layer, first shotcrete layer, the metal anchor net that distribute in proper order in the outside-in of inner wall department in tunnel, the inboard length direction along the tunnel of metal anchor net is provided with a plurality of arch steel band, the arch steel band passes through stock and slip casting layer, first shotcrete layer, metal anchor net fixed connection, every the equal fixedly connected with steel pipe support in inboard of arch steel band, every two are adjacent steel pipe support passes through a plurality of connecting rod fixed connection, steel pipe support includes bottom tube, arch push pipe and two standpipe, the both ends of bottom tube, arch push pipe are all through the one end fixed connection of anchor clamps and the standpipe that corresponds, one the outer wall of standpipe runs through and is provided with the slip casting mouth, the top outer wall of arch push pipe runs through and is provided with the overflow mouth, the concrete has been poured into in the steel pipe support.
As a further aspect of the present invention: the clamp is composed of two semicircular hoops fixedly connected through bolts.
As a further aspect of the present invention: the improved pipe jacking device is characterized in that connecting rings are fixedly connected to the outer walls of the two ends of the bottom pipe, the vertical pipe and the arched jacking pipe, grooves are formed in the inner sides of the semicircular hoops, the connecting rings are located in the corresponding grooves, a plurality of threaded holes communicated with the grooves are formed in the tops of the semicircular hoops in a penetrating mode, and jacking wires are connected in the threaded holes in a matching mode.
As a further aspect of the present invention: the inner side wall of the arched steel strip and the corresponding position of the steel pipe support are fixedly connected with a plurality of clamping seats, the outer wall of each clamping seat is fixedly connected with an arc-shaped clamping plate through a bolt, and the steel pipe support is located between the corresponding clamping seat and the corresponding arc-shaped clamping plate.
As a further aspect of the present invention: the steel pipe anchor net is characterized in that a second guniting layer is arranged on the inner side wall of the metal anchor net, the arched steel belt is located in the second guniting layer, a third guniting layer is arranged on the inner side wall of the second guniting layer, and the steel pipe support and the connecting rod are located in the third guniting layer.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an adopt a plurality of to support in proper order fixed connection's steel pipe support supports the tunnel through the connecting rod, the use of cooperation arch steel band and metal anchor net, can be for being in loosely, the regional tunnel of broken rock mass provides stable support, and by the bottom tube, the steel pipe support's that standpipe and arch push pipe are constituteed simple structure, easily splice fast through anchor clamps, the space requirement to the construction is low, can pour into the concrete into in the steel pipe support after accomplishing the concatenation and consolidate, thereby further improve steel pipe support's intensity, excellent in use effect.
Drawings
Fig. 1 is a schematic structural view of a roadway support structure.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a schematic diagram of a distribution structure of steel pipe supports in a roadway support structure.
Fig. 4 is a schematic structural view of a connecting ring in a roadway supporting structure.
Fig. 5 is a schematic view of a connection structure of a steel pipe support in a roadway support structure.
Fig. 6 is a schematic top view of a clamp in a roadway support structure.
Fig. 7 is a schematic sectional view of a clamp in a roadway supporting structure.
The device comprises a roadway 1, a grouting layer 2, a first guniting layer 3, a metal anchor net 4, an arched steel belt 5, a second guniting layer 6, a third guniting layer 7, a steel pipe support 8, a clamping seat 9, an arc-shaped clamping plate 10, a bottom pipe 11, a vertical pipe 12, an arched jacking pipe 13, a connecting ring 14, a grouting opening 15, an overflow opening 16, a clamp 17, a semicircular hoop 18, a groove 19, a jackscrew 20, a connecting rod 21 and concrete 22.
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.
Please refer to fig. 1-7, in an embodiment of the present invention, a roadway support structure includes a grouting layer 2, a first guniting layer 3, and a metal anchor net 4 sequentially distributed at an inner wall of a roadway 1 from outside to inside, the inner side of the metal anchor net 4 is provided with a plurality of arched steel strips 5 along a length direction of the roadway 1, the arched steel strips 5 are fixedly connected with the grouting layer 2, the first guniting layer 3, and the metal anchor net 4 through anchor rods, and each of the arched steel strips 5 is fixedly connected with a steel pipe support 8, every two adjacent steel pipe supports 8 are fixedly connected with a plurality of connecting rods 21 through bolts or welding, two ends of the connecting rods 21 are respectively fixed with the corresponding steel pipe supports 8 through bolts or welding, the steel pipe supports 8 include a bottom pipe 11, an arched top pipe 13 and two vertical pipes 12, two ends of the bottom pipe 11 and the arched top pipe 13 are both fixedly connected with one ends of the corresponding vertical pipes 12 through clamps 17, one outer wall of the vertical pipe 12 is provided with a grouting port 15, the top outer wall of the arched top pipe 13 is provided with an overflow port 16, and concrete 22 is injected into the steel pipe support.
The clamp 17 is composed of two semicircular hoops 18 fixedly connected through bolts, and is simple in structure and easy to assemble.
The outer walls of two ends of the bottom pipe 11, the vertical pipe 12 and the arched top pipe 13 are fixedly connected with connecting rings 14, grooves 19 are formed in the inner sides of the semicircular hoops 18, the connecting rings 14 are located in the corresponding grooves 19, a plurality of threaded holes communicated with the grooves 19 are formed in the tops of the semicircular hoops 18 in a penetrating mode, jackscrews 20 are connected in the threaded holes in a matching mode, when the adjacent bottom pipe 11 and the vertical pipe 12 or the vertical pipe 12 and the arched top pipe 13 are spliced, only the two connecting rings 14 need to be clamped in the grooves 19 in the inner sides of the two corresponding semicircular hoops 18, then bolts used for connecting the semicircular hoops 18 are slightly screwed, the jackscrews 20 are screwed, the two corresponding connecting rings 14 are tightly attached, then the bolts are screwed, the connection firmness degree between the bottom pipe 11 and the vertical pipe 12 or the vertical pipe 12 and the arched top pipe 13 can be ensured, and in order to improve the sealing performance between the two adjacent connecting rings 14, sealing gaskets can be additionally arranged between the two connecting rings 14.
The inside wall of arch steel band 5 passes through a plurality of holders 9 of bolt fixedly connected with department of correspondence of steel pipe support 8, and the outer wall of holder 9 passes through bolt fixedly connected with arc splint 10, steel pipe support 8 is located between the holder 9 and the arc splint 10 that correspond, through the cooperation of holder 9 and arc splint 10, can fix steel pipe support 8 and the arch steel band 5 that corresponds to improve tunnel supporting structure's wholeness.
Be provided with second shotcrete layer 6 on the inside wall of metal anchor net 4, arch steel band 5 is located second shotcrete layer 6, be provided with third shotcrete layer 7 on second shotcrete layer 6's the inside wall, steel pipe support 8 and connecting rod 21 all are located third shotcrete layer 7, and second shotcrete layer 6 and third shotcrete layer 7's setting can further improve the waterproof nature in tunnel, and make the inside level and smooth in tunnel, the transportation of the later stage construction equipment of being convenient for, lay and install.
The utility model discloses a construction mode includes following step:
the method comprises the following steps: after a section of roadway 1 is excavated, a plurality of grouting anchor rods are driven into the inner wall of the roadway along an angle of 30 degrees, anchor rod grouting is carried out, and a grouting layer 2 is formed on the periphery of the roadway;
step two: performing primary concrete spraying on the inner surface of the roadway 1 with the grouting layer 2 to form a first concrete spraying layer 3, so as to seal the inner wall of the roadway 1 and isolate the moisture exchange between surrounding rocks of the roadway 1 and air in the roadway 1;
step three: after the first guniting layer 3 is solidified, avoiding laying a metal anchor net 4 in the first guniting layer, reinforcing by using an arched steel strip 5, and fixing the arched steel strip 5, the metal anchor net 4, the first guniting layer 3 and the grouting layer 2 by using an anchor rod;
step four: performing secondary concrete spraying on the surfaces of the metal anchor nets 4 and the arched steel strips 5 to form a second concrete spraying layer 6;
step five: after the second guniting layer 6 is solidified, assembling the steel pipe support 8 in the roadway, pre-positioning the vertical pipe 12 and the arched jacking pipe 13 on the inner side of the arched steel strip 5 through the matching of the clamping seat 9 and the arched clamping plate 10, and then fastening the steel pipe support 8 through the clamp;
step six: fixing two ends of the connecting rod 21 with the corresponding steel pipe brackets 8 to connect and fix a plurality of steel pipe brackets 8 in series, and then screwing bolts for connecting the clamping seats 9 with the arc-shaped clamping plates 10 to fasten the steel pipe brackets 8 with the corresponding arch-shaped steel belts 5;
step seven: injecting concrete 22 into each steel pipe bracket 8 through a grouting opening 15 by using a grouting machine;
step eight: and (5) performing third-time concrete spraying on the inner side of the second shotcrete layer 6, and completely covering the steel pipe bracket 8 to form a third shotcrete layer 7, namely completing the supporting construction of the section of the roadway 1.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a roadway support structure which characterized in that: the concrete spraying device comprises a grouting layer (2), a first grouting layer (3) and a metal anchor net (4) which are sequentially distributed on the inner wall of a roadway (1) from outside to inside, wherein a plurality of arch-shaped steel belts (5) are arranged on the inner side of the metal anchor net (4) along the length direction of the roadway (1), the arch-shaped steel belts (5) are fixedly connected with the grouting layer (2), the first grouting layer (3) and the metal anchor net (4) through anchor rods, every two of the arch-shaped steel belts (5) are fixedly connected with steel pipe supports (8) in an inner side mode, every two of the arch-shaped steel belts are adjacent to each other, the steel pipe supports (8) are fixedly connected with corresponding vertical pipes (12) through a plurality of connecting rods (21), each steel pipe support (8) comprises a bottom pipe (11), an arch-shaped top pipe (13) and two vertical pipes (12), one of the vertical pipes (12) penetrates through the outer wall of the grouting port (15), the top outer wall of the arch-shaped top pipe (13) penetrates through the overflow port (16), and concrete is poured into the steel pipe supports (22).
2. The roadway support structure of claim 1, wherein: the clamp (17) is composed of two semicircular hoops (18) fixedly connected through bolts.
3. A roadway support structure as claimed in claim 2, wherein: the improved structure of the hoop comprises a bottom pipe (11), a vertical pipe (12) and an arch top pipe (13), wherein connecting rings (14) are fixedly connected to the outer walls of the two ends of the bottom pipe (11), the vertical pipe (12) and the arch top pipe (13), grooves (19) are formed in the inner sides of semi-circular hoops (18), the connecting rings (14) are located in the corresponding grooves (19), a plurality of threaded holes communicated with the grooves (19) are formed in the top of the semi-circular hoops (18) in a penetrating mode, and jackscrews (20) are connected in the threaded holes in a matched mode.
4. The roadway support structure of claim 1, wherein: the steel pipe support is characterized in that a plurality of clamping seats (9) are fixedly connected with the corresponding positions of the inner side wall of the arched steel belt (5) and the steel pipe support (8), the outer wall of each clamping seat (9) is fixedly connected with an arc-shaped clamping plate (10) through a bolt, and the steel pipe support (8) is located between the corresponding clamping seat (9) and the corresponding arc-shaped clamping plate (10).
5. A roadway support structure as claimed in claim 1, wherein: be provided with second whitewashing layer (6) on the inside wall of metal anchor net (4), arch steel band (5) are located second whitewashing layer (6), be provided with third whitewashing layer (7) on the inside wall of second whitewashing layer (6), steel pipe support (8) and connecting rod (21) all are located third whitewashing layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222579299.3U CN218439391U (en) | 2022-09-28 | 2022-09-28 | Roadway supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222579299.3U CN218439391U (en) | 2022-09-28 | 2022-09-28 | Roadway supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439391U true CN218439391U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222579299.3U Active CN218439391U (en) | 2022-09-28 | 2022-09-28 | Roadway supporting structure |
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| Country | Link |
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| CN (1) | CN218439391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967364A (en) * | 2024-04-02 | 2024-05-03 | 煤炭工业太原设计研究院集团有限公司 | Sylvite high-stress mudstone section roadway support structure and method |
| CN118065942A (en) * | 2024-04-24 | 2024-05-24 | 天津泰达数智科技发展有限公司 | Tunnel construction supporting device and construction method |
-
2022
- 2022-09-28 CN CN202222579299.3U patent/CN218439391U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967364A (en) * | 2024-04-02 | 2024-05-03 | 煤炭工业太原设计研究院集团有限公司 | Sylvite high-stress mudstone section roadway support structure and method |
| CN117967364B (en) * | 2024-04-02 | 2024-05-31 | 煤炭工业太原设计研究院集团有限公司 | Sylvite high-stress mudstone section roadway support structure and method |
| CN118065942A (en) * | 2024-04-24 | 2024-05-24 | 天津泰达数智科技发展有限公司 | Tunnel construction supporting device and construction method |
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