CN112065474A - A strengthen supporting device for tunnel - Google Patents
A strengthen supporting device for tunnel Download PDFInfo
- Publication number
- CN112065474A CN112065474A CN202010815053.4A CN202010815053A CN112065474A CN 112065474 A CN112065474 A CN 112065474A CN 202010815053 A CN202010815053 A CN 202010815053A CN 112065474 A CN112065474 A CN 112065474A
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- China
- Prior art keywords
- supporting
- base
- roadway
- bevel gear
- top plate
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 81
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000005065 mining Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a reinforced supporting device for a roadway, which belongs to the field of roadway supporting and comprises the roadway and a base, wherein the base is positioned in the roadway, a reversed loader is arranged in the middle position of the upper surface of the base, through holes are symmetrically formed in the base, base fixing equipment is movably arranged in the through holes, sleeves are symmetrically welded on the upper surface of the base, hydraulic cylinders are symmetrically arranged on the side walls, far away from the two sleeves, of the two sleeves, one end of each of piston rods of the two hydraulic cylinders is fixedly provided with a same vertically-arranged supporting side plate, a screw rod is rotatably arranged in each sleeve, a first bevel gear is arranged on each screw rod, and a first motor is; the support column structure is novel in design, firm in structure, high in safety, capable of adapting to variable roadway environments and convenient to use, supports the top and two sides of a roadway stably, and the base can drive the support column structure to move, does not need manual disassembly, assembly and transportation, reduces labor intensity, and is worthy of popularization.
Description
Technical Field
The invention belongs to the technical field of roadway support, and particularly relates to a reinforced support device for a roadway.
Background
The support for the fully mechanized mining face transportation roadway is a precondition for ensuring normal work and ventilation of the face. Due to the complex geological conditions of the roadway, the mining of the working face may cause the large-area caving of the top plate of the roadway, and particularly, the variable slope section transportation roadway provided with the reversed loader is broken frequently due to insufficient supporting strength, so that the mining and transportation work of coal is influenced.
The transfer conveyor is important middle transfer equipment of the fully mechanized mining face and is used for transferring coal conveyed by the working face scraper conveyor to the belt conveyor, and the transfer conveyor can integrally move along with the propulsion of the fully mechanized mining face. The reversed loader is arranged in a fully mechanized mining face conveying roadway, and two sides of the reversed loader are respectively provided with a hydraulic support so as to support a roadway roof above the reversed loader. The hydraulic support comprises a top beam and hydraulic upright columns, wherein the top beam on each side is generally required to be connected with 6 hydraulic upright columns to ensure the supporting strength, and the top ends of the hydraulic upright columns are hinged with the top beam. When the elevating conveyor moves, the hydraulic support also needs to move along with the elevating conveyor, a plurality of operators are needed to be matched with each other, each hydraulic upright post is decompressed, the hydraulic upright posts and the top beam are disassembled, the hydraulic upright posts and the top beam are manually carried, the corresponding positions of the hydraulic upright posts and the top beam are moved, repeated operation is carried out for many times, the workload of the operators is increased, and the production efficiency is also influenced. Moreover, in the process of installing and disassembling the hydraulic support, an operator works below the support, and once the top plate falls, the operator is injured.
Disclosure of Invention
The present invention is directed to a reinforcing support device for a roadway to solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a reinforced supporting device for a roadway comprises the roadway and a base, wherein the base is positioned in the roadway, a reversed loader is installed in the middle position of the upper surface of the base, through holes are symmetrically formed in the base, base fixing equipment is movably arranged in the through holes, sleeves are symmetrically welded on the upper surface of the base, hydraulic cylinders are symmetrically installed on the side walls, far away from the two sleeves, of the two sleeves, one end of each piston rod of each hydraulic cylinder is fixedly provided with a vertically arranged supporting side plate, a screw rod is installed in each sleeve in a rotating mode, a bevel gear I is installed on each screw rod, a motor I is installed on one side wall of each sleeve, an output shaft of the motor I penetrates through the side wall of each sleeve and is provided with a bevel gear II, the bevel gear II is meshed with the bevel gear I, a moving block is connected onto each screw, the upper surface of mount table is fixed with supports roof one through the dead lever, the both sides of supporting roof one all articulate there is support roof two, the lower surface mounting of mount table has motor two, bevel gear three is installed to motor two's output shaft, two upper surface of backup pad have all welded two fixed blocks, lie in and install the lead screw with rotating between two fixed blocks of one side, the one end that two lead screws are close to mutually all runs through the fixed block and is connected with bevel gear four, threaded connection has the nut piece on the lead screw, it has the connecting rod to articulate on the nut piece, the one end of two connecting rods articulates respectively on two support roof two.
In a preferred embodiment, the lower surface of the base is symmetrically provided with moving wheels, and the moving wheels are provided with braking devices.
By adopting the scheme, the moving wheels on the lower surface of the base can conveniently move the whole device in the roadway, and the brake device improves the stability.
As a preferred embodiment, base fixed equipment includes the ground nail, and the ground nail activity sets up in the through-hole, and the top welding of ground nail has the clamp plate, and the cover is equipped with the spring on the ground nail, and the top of spring is connected on the clamp plate, and the bottom of spring is connected on the base.
Adopt above-mentioned scheme, through fixing the ground nail at the subaerial in tunnel, can further improve the stability of base, avoid the base to remove, the spring can be so that the removal that can not influence the base can not be contacted ground to the ground nail when not using.
As a preferred embodiment, the moving block is located above the first bevel gear, and a limit block is installed at the top end of the screw rod.
By adopting the scheme, the limiting block at the top end of the screw rod can be used for placing the moving block to separate from the screw rod when the moving block rotates to the top of the screw rod.
In a preferred embodiment, the supporting side plate, the first supporting top plate and the second supporting top plate are all made of metal alloy materials.
By adopting the scheme, the side supporting plate, the first supporting top plate and the second supporting top plate which are made of the metal alloy materials have the advantages of high strength, high hardness and good supporting effect.
As a preferred embodiment, the first supporting top plate and the second supporting top plate are both arc-shaped structures, and the circle center of the arc-shaped curved surface of the first supporting top plate coincides with the circle center of the arc-shaped curved surface of the second supporting top plate.
By adopting the scheme, the first supporting top plate and the second supporting top plate of the arc-shaped structure are matched with the shape of the top of the roadway, so that better supporting capacity is provided.
In a preferred embodiment, the bevel gears three are located between two bevel gears four, and the bevel gears three are respectively engaged with the two bevel gears four.
By adopting the scheme, the bevel gears rotate three times, so that the two bevel gears can be driven to rotate synchronously four times.
In a preferred embodiment, the screw threads of the two screw rods are opposite in thread direction.
By adopting the scheme, the thread turning directions of the two screw rods are opposite, so that the two nut blocks can move in opposite directions, the angle of the second supporting top plate is adjusted through the connecting rod, and the supporting device is suitable for different roadway environments.
Compared with the prior art, the invention has the beneficial effects that:
according to the reinforcing support device for the roadway, the structure comprising the base, the reversed loader, the ground nail, the pressing plate, the spring, the sleeve, the hydraulic cylinder, the support side plate and the like is arranged, the reversed loader is fixed on the base, the two sides of the roadway are supported through the support side plate, the stability of the base is good, and the support effect is good;
the reinforcing support device for the roadway is provided with structures such as a screw rod, a first bevel gear, a first motor, a second bevel gear, a moving block, a supporting rod, a supporting plate and the like, and the height of the supporting plate is adjusted by driving the screw rod to rotate through the first motor, so that the reinforcing support device is suitable for changeable environments in the roadway;
this a strengthen supporting device for tunnel is through setting up mount table, dead lever, supporting roof one, supporting roof two, fixed block, bevel gear three, lead screw, bevel gear four, nut piece and connecting rod isotructure, supports roof one and supports roof two and cooperate, supports the top in tunnel, and supports roof two and can adjust, and adaptability is good, and application range is wide, is worth promoting.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the invention at A;
FIG. 3 is a schematic view of the internal structure of the sleeve of the present invention;
fig. 4 is a schematic view of the structure above the support plate in the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Referring to fig. 1-4, the present invention provides a reinforced support device for a roadway, which includes a roadway 1 and a base 2, wherein moving wheels are symmetrically installed on the lower surface of the base 2, and braking devices are installed on the moving wheels (see fig. 1); the removal wheel of 2 lower surfaces of base can be convenient remove whole device in 1 in tunnel, and brake equipment has improved stability.
The base 2 is positioned in the roadway 1, the reversed loader 3 is installed in the middle of the upper surface of the base 2, through holes are symmetrically formed in the base 2, base fixing equipment is movably arranged in the through holes and comprises ground nails 4, the ground nails 4 are movably arranged in the through holes, pressing plates 5 are welded at the tops of the ground nails 4, springs 6 are sleeved on the ground nails 4, the top ends of the springs 6 are connected to the pressing plates 5, and the bottom ends of the springs 6 are connected to the base 2 (see fig. 1 and 2); through fixing ground nail 4 subaerial in tunnel 1, can further improve base 2's stability, avoid base 2 to remove, spring 6 can be so that ground nail 4 can not contact ground when not using, can not influence base 2's removal.
The upper surface of the base 2 is symmetrically welded with sleeves 7, the side walls, far away from the two sleeves 7, of the two sleeves are symmetrically provided with hydraulic cylinders 8, one end of a piston rod of each hydraulic cylinder 8 is fixedly provided with a vertically arranged supporting side plate 9, a screw rod 10 is rotatably arranged in the sleeve 7, a bevel gear I11 is arranged on the screw rod 10, a motor I12 is arranged on one side wall of the sleeve 7, an output shaft of the motor I12 penetrates through the side wall of the sleeve 7 and is provided with a bevel gear II 13, the bevel gear II 13 is meshed with the bevel gear I11, a moving block 14 is connected to the screw rod 10 in a threaded manner, the upper surface of the moving block 14 is symmetrically welded with supporting rods 15, the moving block 14 is positioned above; the stop block at the top end of the screw 10 can prevent the moving block 14 from being separated from the screw 10 when the moving block rotates to the top of the screw 10.
A supporting plate 16 is fixed at the top end of the supporting rod 15, an installation table 17 is installed on the upper surface of the supporting plate 16, a first supporting top plate 19 is fixed on the upper surface of the installation table 17 through a fixing rod 18, two sides of the first supporting top plate 19 are hinged with second supporting top plates 20, and the supporting side plates 9, the first supporting top plates 19 and the second supporting top plates 20 are made of metal alloy materials; the supporting side plate 9, the first supporting top plate 19 and the second supporting top plate 20 are made of metal alloy materials, the strength is high, the hardness is high, the supporting effect is good, the first supporting top plate 19 and the second supporting top plate 20 are both arc-shaped structures, and the circle center of the arc-shaped curved surface of the first supporting top plate 19 is overlapped with the circle center of the arc-shaped curved surface of the second supporting top plate 20 (see fig. 1 and 4); the first supporting top plate 19 and the second supporting top plate 20 of the arc-shaped structure are matched with the top of the roadway 1 in shape, and better supporting capacity is provided.
A second motor 21 is mounted on the lower surface of the mounting table 17, a third bevel gear 22 is mounted on an output shaft of the second motor 21, two fixing blocks 23 are welded on two upper surfaces of the support plate 16, a screw rod 24 is rotatably mounted between the two fixing blocks 23 on the same side, one ends, close to the two screw rods 24, penetrate through the fixing blocks 23 and are connected with a fourth bevel gear 25, the third bevel gear 22 is located between the two fourth bevel gears 25, and the third bevel gear 22 is respectively meshed with the two fourth bevel gears 25 (see fig. 1 and 4); the bevel gear three 22 rotates to drive the two bevel gears four 25 to synchronously rotate.
The screw rod 24 is connected with a nut block 26 in a threaded manner, and the thread directions of the two screw rods 24 are opposite (see fig. 1 and 4); the nut block 26 is hinged with a connecting rod 27, one end of each of the two connecting rods 27 is hinged to the two supporting top plates 20, and the thread turning directions of the two screw rods 24 are opposite, so that the two nut blocks 26 can move in opposite directions, the angle of the supporting top plates 20 is adjusted through the connecting rods 27, and the supporting roof block adapts to different roadway environments.
When the device is used, the whole device can be arranged at a designated working place through the movable wheels on the lower surface of the base 2, then the ground nails 4 of the base fixing device are utilized to nail the ground nails 4 into the ground of the roadway 1, the base 2 is further fixed, the supporting side plates 8 are abutted to two sides of the roadway 1 through the hydraulic cylinders 8 to support two sides of the roadway 1, two motors I12 are simultaneously opened according to the height of the roadway 1, the motors I12 drive the bevel gears II 13 to rotate, the bevel gears II 13 are meshed with the bevel gears I11 to drive the screw rods 10 to rotate, so that the two movable blocks 14 simultaneously move upwards, the supporting plates 16 are pushed through the supporting rods 15 to move, the supporting top plates I19 are contacted with the top of the roadway 1 to support the top of the roadway 1, then the motors I12 are closed, the motors II 21 are opened according to the radians on two sides of the roadway 1 to drive the, the bevel gear three 22 is meshed with the bevel gear four 25, so that the two screw rods 24 synchronously rotate, the thread turning directions of the two screw rods 24 are opposite, and the two nut blocks 26 can move oppositely, so that the angle of the supporting top plate two 20 is adjusted through the connecting rod 27, and the supporting top plate is suitable for different roadway environments.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a strengthen supporting device for tunnel, includes tunnel (1) and base (2), its characterized in that: the base (2) is positioned in a roadway (1), a reversed loader (3) is installed in the middle of the upper surface of the base (2), through holes are symmetrically formed in the base (2), base fixing equipment is movably arranged in the through holes, sleeves (7) are symmetrically welded on the upper surface of the base (2), hydraulic cylinders (8) are symmetrically installed on the side wall, away from each other, of the two sleeves (7), one end of a piston rod of each hydraulic cylinder (8) is fixedly provided with a same vertically-arranged supporting side plate (9), a screw rod (10) is rotatably installed in each sleeve (7), a bevel gear I (11) is installed on each screw rod (10), a motor I (12) is installed on one side wall of each sleeve (7), a bevel gear II (13) is installed on the side wall, an output shaft of each motor I (12) penetrates through each sleeve (7), each bevel gear II (13) is meshed with each bevel gear I (11), the upper surface of the moving block (14) is symmetrically welded with a supporting rod (15), the top end of the supporting rod (15) is fixed with a supporting plate (16), the upper surface of the supporting plate (16) is provided with an installation table (17), the upper surface of the installation table (17) is fixed with a first supporting top plate (19) through a fixing rod (18), two sides of the first supporting top plate (19) are hinged with a second supporting top plate (20), the lower surface of the installation table (17) is provided with a second motor (21), an output shaft of the second motor (21) is provided with a third bevel gear (22), two fixing blocks (23) are welded on two upper surfaces of the supporting plate (16), a screw rod (24) is rotatably arranged between the two fixing blocks (23) on the same side, one end, close to each other, of the two screw rods (24) penetrates through the fixing blocks (23) and is connected, the nut block (26) is hinged with connecting rods (27), and one ends of the two connecting rods (27) are respectively hinged on the two supporting top plates (20).
2. A reinforcing support device for a roadway as claimed in claim 1, wherein: the lower surface symmetry of base (2) is installed and is removed the wheel, and removes to take turns to and install brake equipment.
3. A reinforcing support device for a roadway as claimed in claim 1, wherein: the base fixed equipment comprises a ground nail (4), the ground nail (4) is movably arranged in the through hole, a pressing plate (5) is welded at the top of the ground nail (4), a spring (6) is sleeved on the ground nail (4), the top end of the spring (6) is connected onto the pressing plate (5), and the bottom end of the spring (6) is connected onto the base (2).
4. A reinforcing support device for a roadway as claimed in claim 1, wherein: the moving block (14) is located above the first bevel gear (11), and a limiting block is installed at the top end of the screw rod (10).
5. A reinforcing support device for a roadway as claimed in claim 1, wherein: the supporting side plate (9), the supporting top plate I (19) and the supporting top plate II (20) are all made of metal alloy materials.
6. A reinforcing support device for a roadway as claimed in claim 1, wherein: the first supporting top plate (19) and the second supporting top plate (20) are both arc-shaped structures, and the circle center of the arc-shaped curved surface of the first supporting top plate (19) coincides with the circle center of the arc-shaped curved surface of the second supporting top plate (20).
7. A reinforcing support device for a roadway as claimed in claim 1, wherein: the bevel gear III (22) is located between the two bevel gears IV (25), and the bevel gear III (22) is meshed with the two bevel gears IV (25) respectively.
8. A reinforcing support device for a roadway as claimed in claim 1, wherein: the thread directions of the two screw rods (24) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815053.4A CN112065474A (en) | 2020-08-13 | 2020-08-13 | A strengthen supporting device for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815053.4A CN112065474A (en) | 2020-08-13 | 2020-08-13 | A strengthen supporting device for tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112065474A true CN112065474A (en) | 2020-12-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010815053.4A Pending CN112065474A (en) | 2020-08-13 | 2020-08-13 | A strengthen supporting device for tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112065474A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431617A (en) * | 2020-12-17 | 2021-03-02 | 钟运涛 | Tunnel is with spraying maintenance support |
| CN113215875A (en) * | 2021-05-18 | 2021-08-06 | 江西安福华洋劳务合作有限公司 | But safety support device is used in track traffic construction of fast assembly extension |
| CN113309223A (en) * | 2021-06-07 | 2021-08-27 | 浙江高盛钢结构有限公司 | Steel house frame |
| CN114320394A (en) * | 2021-12-02 | 2022-04-12 | 济宁学院 | Tunnel scour protection resistance to compression supporting device based on deep dynamic load |
| CN115355028A (en) * | 2022-08-25 | 2022-11-18 | 华亭煤业集团有限责任公司 | Broken roof just has cushioning effect's roadway support device |
| CN115875061A (en) * | 2023-03-08 | 2023-03-31 | 北京工业大学 | High-pressure-bearing tunnel supporting structure |
| CN115929366A (en) * | 2022-11-18 | 2023-04-07 | 盐城工学院 | Adjustable tunnel section supporting mechanism for subway construction |
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| CN201747387U (en) * | 2010-04-16 | 2011-02-16 | 辽宁天安矿山科技有限公司 | Roadway supporting bracket |
| CN208686406U (en) * | 2018-09-21 | 2019-04-02 | 翟武杰 | A kind of supporting coal mine underworkings device |
| CN209308718U (en) * | 2019-01-05 | 2019-08-27 | 亢燕卿 | A kind of supporting coal mine underworkings device |
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| CN209621334U (en) * | 2019-03-12 | 2019-11-12 | 肥城矿业集团矿业管理服务有限公司 | One kind being used for coal mine tunnel suspension device |
| CN209654059U (en) * | 2019-02-20 | 2019-11-19 | 李文亮 | A kind of supporting coal mine underworkings device |
| CN210317357U (en) * | 2019-08-13 | 2020-04-14 | 舒渊 | Mineral engineering tunnel supporting construction |
| CN210317368U (en) * | 2019-05-30 | 2020-04-14 | 刘丽峰 | Roadway support device for coal mine |
| CN210799004U (en) * | 2019-09-29 | 2020-06-19 | 夏洪高 | Coal mine supporting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201747387U (en) * | 2010-04-16 | 2011-02-16 | 辽宁天安矿山科技有限公司 | Roadway supporting bracket |
| CN208686406U (en) * | 2018-09-21 | 2019-04-02 | 翟武杰 | A kind of supporting coal mine underworkings device |
| CN209308718U (en) * | 2019-01-05 | 2019-08-27 | 亢燕卿 | A kind of supporting coal mine underworkings device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431617A (en) * | 2020-12-17 | 2021-03-02 | 钟运涛 | Tunnel is with spraying maintenance support |
| CN112431617B (en) * | 2020-12-17 | 2022-10-28 | 钟运涛 | Tunnel is with spraying maintenance support |
| CN113215875A (en) * | 2021-05-18 | 2021-08-06 | 江西安福华洋劳务合作有限公司 | But safety support device is used in track traffic construction of fast assembly extension |
| CN113309223A (en) * | 2021-06-07 | 2021-08-27 | 浙江高盛钢结构有限公司 | Steel house frame |
| CN114320394A (en) * | 2021-12-02 | 2022-04-12 | 济宁学院 | Tunnel scour protection resistance to compression supporting device based on deep dynamic load |
| CN114320394B (en) * | 2021-12-02 | 2023-11-21 | 济宁学院 | Tunnel scour protection resistance to compression strutting arrangement based on deep strong dynamic load |
| CN115355028A (en) * | 2022-08-25 | 2022-11-18 | 华亭煤业集团有限责任公司 | Broken roof just has cushioning effect's roadway support device |
| CN115355028B (en) * | 2022-08-25 | 2023-12-05 | 华亭煤业集团有限责任公司 | Roadway support device with broken top plate and damping function |
| CN115929366A (en) * | 2022-11-18 | 2023-04-07 | 盐城工学院 | Adjustable tunnel section supporting mechanism for subway construction |
| CN115875061A (en) * | 2023-03-08 | 2023-03-31 | 北京工业大学 | High-pressure-bearing tunnel supporting structure |
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Application publication date: 20201211 |
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| RJ01 | Rejection of invention patent application after publication |