CN112031852A - Arch supporting device for tunnel construction - Google Patents
Arch supporting device for tunnel construction Download PDFInfo
- Publication number
- CN112031852A CN112031852A CN202010880465.6A CN202010880465A CN112031852A CN 112031852 A CN112031852 A CN 112031852A CN 202010880465 A CN202010880465 A CN 202010880465A CN 112031852 A CN112031852 A CN 112031852A
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- support
- sleeve
- driving
- fixed
- plate
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 40
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 6
- 210000001503 joint Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0086—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor in galleries
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to an arch support device for tunnel construction, which comprises a bracket and a bottom plate arranged on the bracket, wherein one side of the bottom plate, which is far away from the bracket, is fixedly provided with a plurality of conical rods; first supporting plate components are symmetrically arranged on two sides of the support and connected with a driving mechanism arranged on the support, and the driving mechanism drives the first supporting plate components to move towards or away from the support; the support is further hinged with a support rod, idler wheels are fixed on the support rod, and the support rod and a rotating shaft hinged with the support are connected with the driving mechanism through a transmission assembly. The invention has novel design, can ensure the stability of the device in the using process while ensuring the convenient movement of the device, and has strong practicability.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to an arch support device for tunnel construction.
Background
With the further enhancement of basic engineering, urban rail transit and railway transit become important transportation means for people to go out. In the construction process of rail transit and railway traffic, a large-section tunnel is always the key and difficult point in engineering construction, and in the tunnel construction process, the actual problems that the foundation bearing capacity is insufficient and the tunnel is correspondingly unstable and collapses and the like are caused in the new stress forming process because firm foundation support is not available are often encountered, so that the personal safety and the equipment safety are seriously influenced, and the construction progress is hindered. In the actual construction process, in order to solve the actual problems of tunnel instability, collapse and the like, the excavation section must be quickly and effectively supported in time in the tunnel excavation process.
Generally, in order to ensure the effect of repeated use and convenient movement of the supporting device, a roller is installed on the supporting device, but the stability of the supporting device is deteriorated due to the presence of the roller.
Disclosure of Invention
The present invention is directed to an arch support device for tunnel construction to solve the above problems of the related art.
In order to achieve the purpose, the invention provides the following technical scheme:
the arch support device for tunnel construction comprises a support and a bottom plate arranged on the support, wherein a plurality of conical rods are fixedly arranged on one side, away from the support, of the bottom plate, at least three electric telescopic rods are arranged on one side, away from the bottom plate, of the support, and a second support plate assembly is arranged at the movable end of each electric telescopic rod;
first supporting plate components are symmetrically arranged on two sides of the support and connected with a driving mechanism arranged on the support, and the driving mechanism drives the first supporting plate components to move towards or away from the support;
the support is further hinged to a support rod, idler wheels are fixed on the support rod, the support rod is connected with the rotating shaft hinged to the support through a transmission assembly, and when the driving mechanism works, the support rod is driven to rotate through the transmission assembly, so that the idler wheels move towards or away from the ground.
As a further scheme of the invention: the first supporting plate assembly comprises a first abutting plate and a fixing rod fixedly connected with the first abutting plate, and one end of the fixing rod, far away from the first abutting plate, is inserted into a movable sleeve connected with the driving mechanism and is connected with the inner side end of the movable sleeve through a first spring.
As a still further scheme of the invention: the first butt joint board is arranged in a hollow structure, two first extension boards in sliding fit with the first butt joint board are inserted into the inner side of the first butt joint board, and the first extension boards are hinged to the movable sleeve through first push rods hinged to the first extension boards.
As a still further scheme of the invention: the driving mechanism comprises a motor installed on the support, an output shaft of the motor is rotatably connected with a driving shaft which is rotatably installed on the support, a bidirectional external thread is arranged on the driving shaft, the driving shaft is in threaded connection with a threaded sleeve through the bidirectional external thread, and the threaded sleeve is hinged with the movable sleeve through a connecting rod hinged with the threaded sleeve.
As a still further scheme of the invention: the second supporting plate component comprises a second abutting plate and a fixing sleeve fixedly connected with the second abutting plate, the fixing sleeve is far away from one end of the second abutting plate, a movable rod fixed with the movable end of the electric telescopic rod is inserted into the one end of the second abutting plate, a second spring is further arranged on the inner side of the fixing sleeve, and two ends of the second spring are fixed to the inner wall of the movable rod and the inner wall of the movable sleeve respectively.
As a still further scheme of the invention: the inboard of second butt joint board is provided with logical groove, and logical inslot has put two second extension boards that set up relatively, the second extension board through with it articulated second catch bar with the movable rod is articulated.
As a still further scheme of the invention: the transmission assembly comprises a support rod, a driven gear and a driving gear, wherein the support rod is connected with the driven gear fixed to a rotating shaft of the support and the driving gear meshed with the driven gear, a worm wheel is fixed to the rotating shaft of the driving gear and meshed with a worm, and the worm is close to the support through a connecting assembly and connected with a threaded sleeve.
As a still further scheme of the invention: the connecting assembly comprises a driving sleeve rotatably mounted on the threaded sleeve and a large gear fixed on the driving sleeve, and the large gear is meshed with a small gear fixed on the worm;
the driving sleeve is in sliding fit with the driving shaft through a limiting assembly.
As a still further scheme of the invention: the drive assembly is in including setting up at least one bar stopper and setting on the drive sleeve inner wall are in on the drive shaft and with bar stopper sliding fit's bar spacing groove.
Compared with the prior art, the invention has the beneficial effects that: the driving mechanism drives the first supporting plate assembly to move towards the side wall of the tunnel arch for supporting, the driving assembly drives the supporting rod to rotate when driving the first supporting assembly to move, so that the roller is separated from the ground, the conical rod is in contact with the ground, the stability of the supporting device is improved, and the electric telescopic rod drives the second supporting plate assembly to support the upper wall of the tunnel arch, so that the stability of the arch is improved.
Drawings
Fig. 1 is a schematic structural view of an arch support device for tunnel construction.
Fig. 2 is an enlarged view of a structure at a in fig. 1.
Fig. 3 is a sectional view of a first support plate assembly in the arch support apparatus for tunnel construction.
Fig. 4 is a sectional view of a second supporting plate assembly in the arch supporting apparatus for tunnel construction.
Fig. 5 is a schematic view showing a connection state of a second abutting plate and a second extending plate in the arch support device for tunnel construction.
In the figure: 1-bracket, 2-first butt joint plate, 3-motor, 4-second butt joint plate, 5-driving shaft, 6-bidirectional external thread, 7-threaded sleeve, 8-connecting rod, 9-roller, 10-tapered rod, 11-driven gear, 12-driving gear, 13-worm wheel, 14-worm, 15-pinion, 16-a gearwheel, 17-a driving sleeve, 18-a fixed rod, 19-a movable sleeve, 20-a first spring, 21-a first extension plate, 22-a second extension plate, 23-a first push rod, 24-a second push rod, 25-a fixed sleeve, 26-a second spring, 27-a movable rod, 28-an electric telescopic rod, 29-a supporting rod and 30-a bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 5, in an embodiment of the present invention, an arch support device for tunnel construction includes a support 1 and a bottom plate 30 installed on the support 1, wherein a plurality of tapered rods 10 are fixedly installed on one side of the bottom plate 30 away from the support 1, at least three electric telescopic rods 28 are installed on one side of the support 1 away from the bottom plate 30, and a second support plate assembly is installed at a movable end of each electric telescopic rod 28;
first supporting plate components are symmetrically arranged on two sides of the support 1 and connected with a driving mechanism arranged on the support 1, and the driving mechanism drives the first supporting plate components to move towards or away from the support 1;
still articulated on the support 1 have a bracing piece 29, be fixed with gyro wheel 9 on the bracing piece 29, bracing piece 29 with support 1 articulated pivot pass through drive assembly with actuating mechanism connects, works as actuating mechanism drives through drive assembly bracing piece 29 rotates, so that gyro wheel 9 moves towards or keeps away from ground.
In the embodiment of the invention, the first supporting plate component is driven by the arranged driving mechanism to move towards the side wall of the tunnel arch for supporting, the supporting rod 29 is driven to rotate by the transmission component when the first supporting component is driven to move, so that the roller 9 is separated from the ground, the conical rod 10 is contacted with the ground to increase the stability of the supporting device, and the arranged electric telescopic rod 28 drives the second supporting plate component to support the upper wall of the tunnel arch so as to increase the stability of the arch.
In the embodiment of the present invention, it should be noted that one side of the bracket 1 away from the bottom plate 30 is arranged in an arc structure, so as to ensure that when three or more electric telescopic rods 28 extend, the second supporting plate assembly can be in full contact with the tunnel arch, thereby increasing the supporting effect of the supporting device.
As an embodiment of the present invention, the first supporting plate assembly includes a first abutting plate 2 and a fixing rod 18 fixedly connected to the first abutting plate 2, and one end of the fixing rod 18 away from the first abutting plate 2 is inserted into a movable sleeve 19 connected to the driving mechanism and is connected to an inner end of the movable sleeve 19 through a first spring 20.
In the embodiment of the invention, when the movable sleeve 19 moves under the action of the driving mechanism, the fixed rod 18 drives the first abutting plate 2 to move towards the side wall of the arch, and when the first abutting plate 2 contacts with the side wall of the arch, the movable sleeve 19 continuously moves to press the first spring 20, so that the first spring 20 is in a compressed state, and a certain shock absorption effect is provided for the arch.
As an embodiment of the present invention, the first abutting plate 2 is disposed in a hollow structure, and two first extending plates 21 slidably engaged with the first abutting plate 2 are inserted into the inner side of the first abutting plate 2, and the first extending plates 21 are hinged to the movable sleeve 19 through first pushing rods 23 hinged to the first extending plates 21.
In the embodiment of the present invention, after the first abutting plate 2 contacts with the side wall of the arch, the movable sleeve 19 continues to move, so that the first extending plate 21 extends out of the first abutting plate 2 through the action of the first pushing rod 23, thereby increasing the supporting area and improving the supporting stability.
As an embodiment of the present invention, the driving mechanism includes a motor 3 mounted on the bracket 1, an output shaft of the motor 3 is rotatably connected to a driving shaft 5 rotatably mounted on the bracket 1, a bidirectional external thread 6 is provided on the driving shaft 5, the driving shaft 5 is threadedly connected to a threaded sleeve 7 through the bidirectional external thread 6, and the threaded sleeve 7 is hinged to the movable sleeve 19 through a connecting rod 8 hinged to the threaded sleeve.
In the embodiment of the invention, the motor 3 is arranged to drive the driving shaft 5 to rotate, the two-way external thread 6 arranged on the riding wheel drives the threaded sleeve 7 to move when the driving shaft 5 rotates, and the movable sleeve 19 moves under the action of the connecting rod 8 when the threaded sleeve 7 moves, so that the driving requirement is met.
In the embodiment of the present invention, it should be noted that a plurality of bidirectional external threads 6 are provided, each of the bidirectional external threads 6 corresponds to two first support plate assemblies which are oppositely arranged, and two threaded sleeves 7 are threadedly connected to one of the bidirectional threaded rods 6, so that when the driving shaft 5 rotates, the two bidirectional threaded rods 7 move in opposite directions or move in opposite directions.
As an embodiment of the present invention, the second supporting plate assembly includes a second abutting plate 4 and a fixed sleeve 25 fixedly connected to the second abutting plate 4, a movable rod 27 fixed to a movable end of the electric telescopic rod 28 is inserted into one end of the fixed sleeve 25 away from the second abutting plate 4, a second spring 26 is further disposed inside the fixed sleeve 25, and two ends of the second spring 26 are respectively fixed to the movable rod 27 and an inner wall of the movable sleeve 25.
In the embodiment of the present invention, when the electric telescopic rod 8 extends, the movable rod 27 and the fixed sleeve 25 drive the second abutting plate 4 to move, and when the second abutting plate 4 contacts with the upper side of the arch, the movable rod 27 continuously moves, so as to compress the second spring 26, and provide a certain damping effect for the arch.
As an embodiment of the present invention, a through groove is disposed on the inner side of the second abutting plate 4, and two oppositely disposed second extending plates 22 are inserted into the through groove, and the second extending plates 22 are hinged to the movable rod 27 through a second pushing rod 24 hinged to the second extending plates.
In the embodiment of the present invention, it can be understood that the two second extension plates 22 are unfolded by the action of the second push rod 24 when the movable rod 27 is continuously moved, thereby increasing the supporting area of the arch to enhance the supporting effect.
In the embodiment of the present invention, it should be noted that the second abutting plate 4 and the second extending plate 22 are both disposed in an arc structure.
As an embodiment of the present invention, the transmission assembly includes a driven gear 11 fixed to a rotating shaft connecting the support rod 29 and the bracket 1, and a driving gear 12 engaged with the driven gear 11, a worm wheel 13 is fixed to a rotating shaft of the driving gear 12, the worm wheel 13 is engaged with a worm 14, and the worm 14 is connected to the threaded sleeve 7 near the bracket 1 through a connection assembly.
In the embodiment of the invention, when the connecting assembly moves, the worm 14 is driven to rotate, the worm 14 drives the driving gear 12 to rotate through the worm wheel 13 meshed with the worm, and when the driving gear 12 rotates, the supporting rod 29 is driven to rotate through the driven gear 11 meshed with the driving gear, so that the roller 9 moves towards or away from the ground.
In the embodiment of the present invention, it can be understood that the position locking after the adjustment of the roller 9 can be effectively ensured due to the self-locking effect between the worm wheel 13 and the worm 14.
As an embodiment of the present invention, the connecting assembly includes a driving sleeve 17 rotatably mounted on the threaded sleeve 7 and a large gear 16 fixed on the driving sleeve 17, wherein the large gear 16 is engaged with a small gear 15 fixed on the worm 14;
the drive sleeve 17 is in sliding fit with the drive shaft 5 through a stop assembly.
In the embodiment of the invention, the driving sleeve 17 is driven by the driving shaft 5 to rotate under the action of the limiting assembly, so as to drive the large gear 16 fixed on the driving sleeve 17 to rotate, and when the large gear 16 rotates, the small gear 15 is driven to rotate, so as to drive the worm 14 to rotate, thereby realizing the transmission effect.
As an embodiment of the present invention, the driving assembly includes at least one bar-shaped limiting block disposed on the inner wall of the driving sleeve 17 and a bar-shaped limiting groove disposed on the driving shaft 5 and slidably engaged with the bar-shaped limiting block.
In the embodiment of the invention, the strip-shaped limiting blocks are matched with the strip-shaped limiting grooves, so that the driving sleeve 17 can rotate along with the driving shaft 5.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The arch support device for tunnel construction is characterized by comprising a support (1) and a bottom plate (30) installed on the support (1), wherein a plurality of conical rods (10) are fixedly installed on one side, away from the support (1), of the bottom plate (30), at least three electric telescopic rods (28) are installed on one side, away from the bottom plate (30), of the support (1), and a second support plate assembly is installed at the movable end of each electric telescopic rod (28);
first supporting plate components are symmetrically arranged on two sides of the support (1), and are connected with a driving mechanism arranged on the support (1), and the driving mechanism drives the first supporting plate components to move towards or away from the support (1);
still articulated on support (1) have bracing piece (29), be fixed with gyro wheel (9) on bracing piece (29), bracing piece (29) with support (1) articulated pivot pass through transmission assembly with actuating mechanism connects, works as actuating mechanism during operation, drives through transmission assembly bracing piece (29) rotates, so that gyro wheel (9) move towards or keep away from ground.
2. The arch support device for tunnel construction according to claim 1, wherein the first support plate assembly comprises a first abutting plate (2) and a fixed rod (18) fixedly connected with the first abutting plate (2), one end of the fixed rod (18) far away from the first abutting plate (2) is inserted into a movable sleeve (19) connected with the driving mechanism and is connected with the inner end of the movable sleeve (19) through a first spring (20).
3. The arch support device for tunnel construction according to claim 2, wherein the first butt plate (2) is provided in a hollow structure, and two first extension plates (21) slidably engaged with the first butt plate (2) are inserted into the inner side of the first butt plate (2), and the first extension plates (21) are hinged to the movable sleeve (19) through first push rods (23) hinged to the first extension plates.
4. The arch support device for tunnel construction according to claim 2, wherein the driving mechanism comprises a motor (3) mounted on the bracket (1), an output shaft of the motor (3) is rotatably connected with a driving shaft (5) rotatably mounted on the bracket (1), a bidirectional external thread (6) is arranged on the driving shaft (5), the driving shaft (5) is in threaded connection with a threaded sleeve (7) through the bidirectional external thread (6), and the threaded sleeve (7) is hinged with the movable sleeve (19) through a connecting rod (8) hinged with the threaded sleeve.
5. The arch support device for tunnel construction according to claim 1, wherein the second support plate assembly includes a second abutting plate (4) and a fixed sleeve (25) fixedly connected to the second abutting plate (4), a movable rod (27) fixed to the movable end of the electric telescopic rod (28) is inserted into one end of the fixed sleeve (25) far away from the second abutting plate (4), a second spring (26) is further disposed inside the fixed sleeve (25), and two ends of the second spring (26) are respectively fixed to the movable rod (27) and the inner wall of the movable sleeve (25).
6. An arch support device for tunnel construction according to claim 5, wherein the second abutting plate (4) is provided with a through slot at the inner side, and two second extending plates (22) are inserted into the through slot and oppositely arranged, and the second extending plates (22) are hinged with the movable rods (27) through second pushing rods (24) hinged with the second extending plates.
7. The arch support device for tunnel construction according to claim 4, wherein the transmission assembly comprises a driven gear (11) connected with the support rod (29) and fixed with a rotating shaft of the bracket (1) and a driving gear (12) engaged with the driven gear (11), a worm wheel (13) is fixed on the rotating shaft of the driving gear (12), the worm wheel (13) is engaged with a worm (14), and the worm (14) is connected with a threaded sleeve (7) close to the bracket (1) through a connecting assembly.
8. The arch support device for tunnel construction according to claim 7, wherein the connecting assembly comprises a driving sleeve (17) rotatably mounted on the threaded sleeve (7) and a large gear (16) fixed on the driving sleeve (17), the large gear (16) is engaged with a small gear (15) fixed on the worm (14);
the driving sleeve (17) is in sliding fit with the driving shaft (5) through a limiting assembly.
9. The arch support device for tunnel construction according to claim 8, wherein the driving assembly includes at least one strip-shaped stopper disposed on the inner wall of the driving sleeve (17) and a strip-shaped stopper groove disposed on the driving shaft (5) and slidably engaged with the strip-shaped stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880465.6A CN112031852A (en) | 2020-08-27 | 2020-08-27 | Arch supporting device for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880465.6A CN112031852A (en) | 2020-08-27 | 2020-08-27 | Arch supporting device for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112031852A true CN112031852A (en) | 2020-12-04 |
Family
ID=73587306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010880465.6A Pending CN112031852A (en) | 2020-08-27 | 2020-08-27 | Arch supporting device for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112031852A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855232A (en) * | 2021-01-20 | 2021-05-28 | 吉林大学 | Highway tunnel construction is with emergent strutting arrangement of resistance to deformation |
| CN113236311A (en) * | 2021-01-14 | 2021-08-10 | 陈汝连 | Arched supporting structure in tunnel construction and construction method |
| CN114045828A (en) * | 2022-01-14 | 2022-02-15 | 郑州航空工业管理学院 | Building underground construction is with supplementary protector |
| CN115653651A (en) * | 2022-11-10 | 2023-01-31 | 浙江汉宇设计有限公司 | Temporary supporting equipment for tunnel bridge construction |
| CN115681700A (en) * | 2022-10-12 | 2023-02-03 | 浙江浙交检测技术有限公司 | Tunnel top crack detection device |
| CN115929366A (en) * | 2022-11-18 | 2023-04-07 | 盐城工学院 | Adjustable tunnel section supporting mechanism for subway construction |
| CN116378730A (en) * | 2023-05-24 | 2023-07-04 | 山西朔州平鲁区茂华白芦煤业有限公司 | Stable supporting device for mining |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236311A (en) * | 2021-01-14 | 2021-08-10 | 陈汝连 | Arched supporting structure in tunnel construction and construction method |
| CN113236311B (en) * | 2021-01-14 | 2023-08-08 | 欣勤建设集团有限公司 | Arch support structure in tunnel construction and construction method |
| CN112855232A (en) * | 2021-01-20 | 2021-05-28 | 吉林大学 | Highway tunnel construction is with emergent strutting arrangement of resistance to deformation |
| CN114045828A (en) * | 2022-01-14 | 2022-02-15 | 郑州航空工业管理学院 | Building underground construction is with supplementary protector |
| CN114045828B (en) * | 2022-01-14 | 2023-03-14 | 郑州航空工业管理学院 | Building underground construction is with supplementary protector |
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| CN115681700B (en) * | 2022-10-12 | 2023-08-25 | 浙江浙交检测技术有限公司 | Tunnel top crack detection device |
| CN115653651A (en) * | 2022-11-10 | 2023-01-31 | 浙江汉宇设计有限公司 | Temporary supporting equipment for tunnel bridge construction |
| CN115929366A (en) * | 2022-11-18 | 2023-04-07 | 盐城工学院 | Adjustable tunnel section supporting mechanism for subway construction |
| CN116378730A (en) * | 2023-05-24 | 2023-07-04 | 山西朔州平鲁区茂华白芦煤业有限公司 | Stable supporting device for mining |
| CN116378730B (en) * | 2023-05-24 | 2023-08-11 | 山西朔州平鲁区茂华白芦煤业有限公司 | Stable supporting device for mining |
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Application publication date: 20201204 |
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