CN110344411B - Underground supporting and anchoring equipment for building construction - Google Patents
Underground supporting and anchoring equipment for building construction Download PDFInfo
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- CN110344411B CN110344411B CN201910668986.2A CN201910668986A CN110344411B CN 110344411 B CN110344411 B CN 110344411B CN 201910668986 A CN201910668986 A CN 201910668986A CN 110344411 B CN110344411 B CN 110344411B
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- rod
- anchor rod
- anchor
- connecting rod
- underground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an underground supporting and anchoring device for building construction, which comprises an anchor rod, wherein one end of the anchor rod is screwed into a foundation pit, and the other end of the anchor rod is used for limiting a blockboard through a bearing plate; the inner rod is arranged inside the anchor rod and used for assisting in supporting and fixing the anchor rod; the anchor rod fixing device is novel in design, compact in structure and convenient to use, the overall stability and the cyclic utilization of the anchor rod fixing device are both considered, and semi-recovery can be realized, namely the conical body is reserved in a foundation pit during recovery, and only the anchor rod and the inner rod are recovered.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to underground supporting and anchoring equipment for building construction.
Background
In the underground construction process of the building industry, foundation pit supporting and underground anchoring are very important construction processes, and the purposes of protecting the whole structure, preventing earthwork collapse, concrete leakage and the like can be achieved.
The existing support is generally fixed by adopting a wood support and a wood board, the support and the guard plates are only connected by adopting anchor rods to be closely attached to a pouring foundation pit in the anchoring of some supports, but all claw force points of the structure are threads on the anchor rods, so that the structure is not very firm, and the existing cement grouting technology is inconvenient to recover. Accordingly, those skilled in the art have provided an underground supporting and anchoring apparatus for building construction to solve the problems set forth in the background art as described above.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the underground supporting and anchoring equipment for building construction comprises an anchor rod, wherein one end of the anchor rod is screwed into a foundation pit, and the other end of the anchor rod is used for limiting a blockboard through a bearing plate;
the inner rod is arranged inside the anchor rod and used for assisting in supporting and fixing the anchor rod;
the tapered body is arranged at one end, far away from the bearing plate, of the anchor rod and used for fixing the anchor rod.
Further, as preferred, the carpenter board rear is the foundation ditch to pre-buried in the foundation ditch has the plastic sleeve, it has the stock to run through in the plastic sleeve, the outer fixed surface of carpenter board is connected with the support, the welding has the bearing plate on the support, the top level of bearing plate is equipped with encloses the sandalwood, and the stock runs through the bearing plate, the outside threaded connection that the stock is located the bearing plate has the nut for restrict the bearing plate.
Further, as preferred, the plastic sleeve is arranged in an inclined mode, the inclined track of the plastic sleeve is thirty degrees from inside to outside, friction blocks are evenly distributed on the outer surface of the plastic sleeve, the friction blocks are groove-shaped and gradually widened from bottom to top, the friction blocks are arranged in a spiral rising mode, and the plastic sleeve wraps the upper half section of the anchor rod.
Further, as preferred, the surface of stock is close to the one end of toper body and is provided with screw thread one, and part screw thread one is used for linking to each other with toper body screw thread, the surface of toper body still cloth has screw thread two, the utricule has been arranged in the space that forms between stock and the toper body, the shape of utricule is the same with the toper body, just the inside symmetry of utricule is provided with two spring two, the inside of utricule is full of grout, still separate the baffle between the bottom of utricule and stock, the symmetry is provided with two water conservancy diversion holes on the oblique side of toper body, is provided with a plurality of sharp teeth on the inner wall of toper body simultaneously.
Further, as preferred, the stock is the hollow circular cylinder structure, and its inside is provided with interior pole, the fixed threaded rod that is provided with in upper end of interior pole, the threaded rod links to each other with the screw thread that sets up in stock port inboard, the other end of interior pole is provided with the limiting plate, the limiting plate slides and sets up the inside at the stock, the fixed extrusion stick that is provided with of the other end of limiting plate, the cover is equipped with spring one on the extrusion stick, the one end of spring one is fixed on the limiting plate, and the other end of spring one links to each other with the bottom of stock is fixed, still be provided with the flexible supporting link of 2-4.
Further, preferably, the bottom of the anchor rod is provided with an extending hole for allowing the extrusion rod to pass through, and the baffle plate is provided with a through hole with the same size as the extending hole.
Further, as preferred, the symmetry is provided with two sets of flexible support connecting rods on the interior pole, flexible support connecting rod includes connecting rod one, connecting rod two, connecting rod three and connecting rod four, the one end of connecting rod one is articulated mutually with fixed sleeve, fixed sleeve is the solid of revolution of cross section for T shape, the embedded cavity of fixing at the stock of fixed sleeve, fixed sleeve's inside links to each other with interior pole slip, the last symmetry of fixed sleeve is provided with two engaging lugs for with connecting rod one is articulated mutually, the other end of connecting rod one articulates the well upper portion at connecting rod two, interior pole, connecting rod two, connecting rod three and connecting rod four articulate according to the order, form four-bar structure.
Preferably, the inner rod is provided with a protruding groove at a position corresponding to the telescopic support connecting rod.
Preferably, the wood board is a member integrally die-cast by a composite wood board, and the thickness of the wood board is not less than three centimeters.
Further, preferably, a handle is provided at an end of the inner lever.
Compared with the prior art, the invention has the beneficial effects that:
the device has the advantages of novel design, compact structure and convenient use, has the advantages of taking the whole stability and cyclic utilization into consideration, and can realize semi-recovery, namely, the conical body is reserved in the foundation pit during recovery, and only the anchor rod and the inner rod are recovered; firstly, the anchor rod penetrates into the plastic sleeve and rotates clockwise, in the rotating process, the second thread on the conical body and the second thread on the anchor rod extrude soil layer for a while to realize preliminary anchoring, the handle is rotated to enable the threaded rod to drive the inner rod to sink, the extruding rod penetrates through the extending hole to extrude the capsule body, the capsule body extrudes sharp teeth to break, cement paste flows out from the backflow hole in a clockwise manner, the conical body is completely fixed after solidification, at the moment, the handle is rotated in a reverse direction to drive the inner rod to rise, so that the four-connecting-rod structure on the telescopic support connecting rod extends out of the extending groove, thereby assisting in supporting and fixing the inner rod, reducing the force of the threads, preventing the template from inclining, at the moment, the whole device is stable, when the anchor rod is disassembled at the later stage, the four-connecting-rod structure on the telescopic support connecting rod is retracted into the anchor rod, then, thereby recycling the anchor rod and the inner rod and saving resources.
Drawings
FIG. 1 is a schematic structural view of an underground supporting and anchoring apparatus for building construction;
FIG. 2 is a schematic view showing an installation structure of an underground supporting and anchoring apparatus for building construction;
fig. 3 is a schematic view of the internal structure of a rock bolt of the underground supporting and anchoring device for building construction.
Fig. 4 is an enlarged view of an inner portion of a shank of an underground supporting and anchoring apparatus for construction;
FIG. 5 is an enlarged view of FIG. 3 at A;
FIG. 6 is a schematic view of the internal structure of the anchor rod of the underground supporting and anchoring device for building construction;
in the figure: 1. an inner rod; 2. a nut; 3. a pressure bearing plate; 4. a support; 5. a friction block; 6. an anchor rod; 7. a first thread; 8. a threaded rod; 9. a plastic sleeve; 10. enclosing sandalwood; 11. a wood board; 12. a handle; 13. a telescopic support link; 14. a first spring; 15. fixing the sleeve; 16. extruding the rod; 17. a first connecting rod; 18. a second connecting rod; 19. a third connecting rod; 20. a connecting rod IV; 21. extending out of the groove; 22. a conical body; 23. an outlet hole; 24. a baffle plate; 25. a flow guide hole; 26. cuspid teeth; 27. a capsule body; 28. a second spring; 29. a second thread; 30. and a limiting 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.
Example (b): referring to fig. 1-6, the present invention provides a technical solution: the underground supporting and anchoring equipment for building construction comprises an anchor rod 6, wherein one end of the anchor rod 6 is screwed into a foundation pit, and the other end of the anchor rod 6 is used for limiting a blockboard 11 through a bearing plate 3;
the inner rod 1 is arranged inside the anchor rod 6 and used for assisting in supporting and fixing the anchor rod 6;
and the conical body 22 is arranged at one end of the anchor rod 6 far away from the bearing plate 3 and used for fixing the anchor rod 6.
Wherein, carpenter's board 11 rear is the foundation ditch to pre-buried plastic sleeve 9 that has in the foundation ditch, it has stock 6 to run through in the plastic sleeve 9, carpenter's board 11 outer fixed surface is connected with support 4, and support 4 is by the bolt fastening, convenient dismantlement, the welding has pressure-bearing plate 3 on the support 4, the top level of pressure-bearing plate 3 is equipped with encloses sandalwood 10, and stock 6 runs through pressure-bearing plate 3, the outside threaded connection that stock 6 is located pressure-bearing plate 3 has nut 2 for restrict pressure-bearing plate 3.
In this embodiment, plastic sleeve 9 is the slope setting to the orbit of its slope is thirty degrees from inside to outside, and this design prevents that the water on soil layer from getting into inside the building, plastic sleeve 9's surface equipartition has clutch blocks 5, clutch blocks 5 are the recess form that widens gradually from bottom to top, just clutch blocks 5 become spiral rising setting, plastic sleeve 9 is wrapping up the first section of the stock 6.
In this embodiment, one end of the outer surface of the anchor rod 6 close to the conical body 22 is provided with a first thread 7, a part of the first thread 7 is used for being in threaded connection with the conical body 22, when the anchor rod 6 extends into a foundation pit, the other part of the first thread 7 is used for extruding and grabbing a soil layer, a second thread 29 is further distributed on the outer surface of the conical body 22, the second thread 29 is also used for extruding and grabbing a soil layer, a bag 27 is arranged in a space formed between the anchor rod 6 and the conical body 22, the bag 27 is the same as the conical body 22 in shape, two springs 28 are symmetrically arranged inside the bag 27, cement paste is filled inside the bag 27, a baffle 24 is further arranged between the bag 27 and the bottom of the anchor rod 6, two diversion holes 25 are symmetrically arranged on the oblique side surface of the conical body 22, and a plurality of sharp teeth 26 are arranged on the inner wall of the conical body 22, the injection port is reserved in the capsule body 27, after cement paste is filled in the capsule body 27, the injection port is sealed, the second spring 28 is in a stretching shape, the size of the capsule body 27 is slightly smaller than the size of a space formed between the anchor rod 6 and the conical body 22, the pointed teeth are not damaged by the self gravity of the capsule body, the capsule body is extruded by the extrusion rod unless external force is applied, the capsule body is scratched by the pointed teeth, the cement paste in the capsule body flows out, the balance in the capsule body is broken, and the cement paste continuously flows out under the action of the second spring 28.
In this embodiment, stock 6 is the hollow circular cylinder structure, and its inside is provided with interior pole 1, the fixed threaded rod 8 that is provided with in upper end of interior pole 1, threaded rod 8 links to each other with the screw thread that sets up at 6 port inboards of stock, the other end of interior pole 1 is provided with limiting plate 30, limiting plate 30 slides and sets up the inside at stock 6, the fixed extrusion stick 16 that is provided with of the other end of limiting plate 30, the cover is equipped with spring 14 on the extrusion stick 16, the one end of spring 14 is fixed on limiting plate 30, and the other end of spring 14 is fixed continuous with the bottom of stock 6, still be provided with the flexible supporting rod 13 of 2-4 groups on interior pole 1.
The bottom of the anchor rod 6 is provided with an extending hole 23 for passing through the extrusion rod 16, and a through hole with the same size as the extending hole 23 is formed on the baffle plate 24.
Wherein, the symmetry is provided with two sets of flexible support connecting rods 13 on interior pole 1, flexible support connecting rod 13 includes connecting rod 17, two 18 of connecting rods, three 19 of connecting rod and four 20 of connecting rod, the one end and the fixed sleeve 15 of connecting rod 17 are articulated mutually, fixed sleeve 15 is the solid of revolution of cross section for T shape, the embedded fixing in the cavity of stock 6 of fixed sleeve 15, the inside and interior pole 1 of fixed sleeve 15 slide continuously, the symmetry is provided with two engaging lugs on the fixed sleeve 15, for with one 17 of connecting rod is articulated mutually, the other end of one 17 of connecting rod articulates the well upper portion at two 18 of connecting rod, interior pole 1, two 18 of connecting rod, three 19 of connecting rod and four 20 of connecting rod are articulated according to the order, form four-bar structure.
In this embodiment, the inner rod 1 is provided with an extending groove 21 at a position corresponding to the telescopic support link 13.
In this embodiment, the blockboard 11 is a member formed by integrally die-casting a composite wood board, and the thickness of the blockboard 11 is not less than three centimeters, so as to limit the strength of the blockboard 11 and prevent breakage.
In this embodiment, a handle 12 is provided at an end of the inner pole 1.
The device gives consideration to the integral stability and cyclic utilization during design, can realize semi-recycling, when in specific implementation, firstly, a through hole is arranged on a wood board 11 according to an embedded plastic sleeve 9, then the wood board 11 is attached to a foundation pit, the through hole corresponds to the plastic sleeve 9, then an anchor rod 6 penetrates into the plastic sleeve 9 and rotates clockwise, in the rotating process, a thread II 29 on a conical body 22 and a thread I7 on the anchor rod 6 extrude a soil layer, so that the anchor rod 6 goes deep, when one fifth of the thread II is left when the end part of the anchor rod 6 is screwed in, a bracket 4 is fixed on the wood board 11 through a bolt, a bearing plate 3 is sleeved on the end part of the anchor rod 6, the bearing plate 3 and the bracket 4 are fixed, then a nut 2 is sleeved on the anchor rod 6 to complete limiting, at the moment, as shown in figure 6, a handle 12 is rotated to drive an inner rod 1 to sink, an extrusion rod 16 passes through an extension hole 23 to extrude a capsule 27, the capsule 27 is broken by pressing the cuspids 26 and the cement slurry flows out of the holes 25, after solidification, the conical body 22 is completely fixed, it should be explained that the capsule 27 is made on site, namely, the bag body 27 is provided with a grouting opening, after the bag body 27 is filled with cement paste, the grouting opening is sealed, the manufactured capsule 27 is then placed in the conical body 22, and is retained by the baffle 24, then the conical body is fixed at the end part of the anchor rod 6, the handle 12 is rotated reversely at the moment to drive the inner rod 1 to rise, so that the four-bar structure on the telescopic support connecting bar 13 extends out of the extension groove 21, thereby assisting in supporting and fixing the inner rod 1, and the installation is finished at the moment, when later-period disassembly is carried out, the four-bar structure on the telescopic support connecting bar 13 is firstly retracted into the anchor rod 6, the anchor rod 6 is then rotated so that the anchor rod 6 is separated from the conical body 22, thereby recovering the anchor rod 6 and the inner rod 1.
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 (9)
1. The underground supporting and anchoring equipment for building construction is characterized by comprising an anchor rod (6), wherein one end of the anchor rod (6) is screwed into a foundation pit, and the other end of the anchor rod (6) is used for limiting a blockboard (11) through a bearing plate (3);
the inner rod (1) is arranged inside the anchor rod (6) and used for assisting in supporting and fixing the anchor rod (6);
the conical body (22) is arranged at one end, far away from the bearing plate (3), of the anchor rod (6) and used for fixing the anchor rod (6);
one end of the outer surface of the anchor rod (6) close to the conical body (22) is provided with a first thread (7), wherein part of the first screw thread (7) is used for being connected with the conical body (22) in a screw thread way, the outer surface of the conical body (22) is also provided with a second screw thread (29), a capsule body (27) is arranged in a space formed between the anchor rod (6) and the conical body (22), the shape of the capsule body (27) is the same as that of the conical body (22), two springs II (28) are symmetrically arranged inside the capsule body (27), the inside of the bag body (27) is filled with cement paste, a baffle (24) is arranged between the bag body (27) and the bottom of the anchor rod (6), two diversion holes (25) are symmetrically arranged on the oblique side surface of the conical body (22), meanwhile, a plurality of cuspids (26) are arranged on the inner wall of the conical body (22).
2. The underground supporting and anchoring device for building construction according to claim 1, characterized in that a foundation pit is behind the wood board (11), a plastic sleeve (9) is pre-embedded in the foundation pit, an anchor rod (6) penetrates through the plastic sleeve (9), a bracket (4) is fixedly connected to the outer surface of the wood board (11), a bearing plate (3) is welded on the bracket (4), a surrounding sandalwood (10) is horizontally arranged at the top of the bearing plate (3), the anchor rod (6) penetrates through the bearing plate (3), and a nut (2) is connected to the outer thread of the anchor rod (6) on the bearing plate (3) in a threaded manner so as to limit the bearing plate (3).
3. The underground supporting and anchoring device for building construction according to claim 2, wherein the plastic sleeve (9) is arranged in an inclined manner, the inclined track of the plastic sleeve is thirty degrees from inside to outside, the outer surface of the plastic sleeve (9) is uniformly provided with friction blocks (5), the friction blocks (5) are in a groove shape gradually widening from bottom to top, the friction blocks (5) are arranged in a spiral rising manner, and the plastic sleeve (9) wraps the upper half section of the anchor rod (6).
4. The construction underground support anchoring apparatus of claim 1, wherein the anchor rods (6) are of a hollow cylindrical structure, an inner rod (1) is arranged in the inner part, a threaded rod (8) is fixedly arranged at the upper end of the inner rod (1), the threaded rod (8) is connected with the thread arranged at the inner side of the port of the anchor rod (6), the other end of the inner rod (1) is provided with a limit plate (30), the limit plate (30) is arranged inside the anchor rod (6) in a sliding way, the other end of the limiting plate (30) is fixedly provided with an extrusion rod (16), a first spring (14) is sleeved on the extrusion rod (16), one end of the first spring (14) is fixed on the limiting plate (30), the other end of the first spring (14) is fixedly connected with the bottom of the anchor rod (6), and 2-4 groups of telescopic supporting connecting rods (13) are also arranged on the inner rod (1).
5. An underground support anchoring apparatus for building construction according to claim 4, wherein the anchor rods (6) are provided at the bottom thereof with an extension hole (23) for passing the pressing rod (16), and the blocking plate (24) is provided with a through hole having the same size as the extension hole (23).
6. The underground supporting and anchoring equipment for building construction according to claim 4, characterized in that two groups of telescopic supporting connecting rods (13) are symmetrically arranged on the inner rod (1), each telescopic supporting connecting rod (13) comprises a first connecting rod (17), a second connecting rod (18), a third connecting rod (19) and a fourth connecting rod (20), one end of the first connecting rod (17) is hinged to a fixing sleeve (15), the fixing sleeve (15) is a rotary body with a T-shaped cross section, the fixing sleeve (15) is embedded and fixed in a cavity of the anchor rod (6), the inside of the fixing sleeve (15) is connected with the inner rod (1) in a sliding mode, two connecting lugs are symmetrically arranged on the fixing sleeve (15) and used for being hinged to the first connecting rod (17), the other end of the first connecting rod (17) is hinged to the middle upper portion of the second connecting rod (18), and the inner rod (1), The second connecting rod (18), the third connecting rod (19) and the fourth connecting rod (20) are hinged in sequence to form a four-connecting-rod structure.
7. The underground support anchoring equipment for building construction according to claim 6, characterized in that the inner rod (1) is provided with a protruding groove (21) at the position corresponding to the telescopic support connecting rod (13).
8. An underground timbering and anchoring apparatus for construction according to claim 1, wherein the wood board (11) is a member integrally die-cast from a composite wood board, and the thickness of the wood board (11) should not be less than three cm.
9. A construction underground support anchoring apparatus according to claim 1, characterized in that the end of the inner rod (1) is provided with a handle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668986.2A CN110344411B (en) | 2019-07-23 | 2019-07-23 | Underground supporting and anchoring equipment for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668986.2A CN110344411B (en) | 2019-07-23 | 2019-07-23 | Underground supporting and anchoring equipment for building construction |
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| Publication Number | Publication Date |
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| CN110344411A CN110344411A (en) | 2019-10-18 |
| CN110344411B true CN110344411B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910668986.2A Active CN110344411B (en) | 2019-07-23 | 2019-07-23 | Underground supporting and anchoring equipment for building construction |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984173B (en) * | 2019-11-26 | 2021-04-16 | 陕西交通职业技术学院 | Underground support anchoring equipment for building construction and construction method thereof |
| CN111455997B (en) * | 2020-04-01 | 2021-08-17 | 安徽金联地矿科技有限公司 | A spacing fixing device for geotechnique's check room |
| CN111997048B (en) * | 2020-07-03 | 2021-09-17 | 中北大学 | Multifunctional recyclable anchor rod or anchor cable |
| CN112413543A (en) * | 2020-10-16 | 2021-02-26 | 成都华体慧城科技有限公司 | Lamp pole mounting base, lamp pole and mounting method of lamp pole |
| CN112538897A (en) * | 2020-12-01 | 2021-03-23 | 湖北和亿方装配式建筑科技有限公司 | Component part of assembly type building structure and building comprising component part |
| CN115030150B (en) * | 2022-07-01 | 2023-12-22 | 厦门铖知新材科技有限公司 | Bag anchor rod |
| CN117071594B (en) * | 2023-10-13 | 2023-12-22 | 四川省建筑科学研究院有限公司 | Foundation pit supporting structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2051672U (en) * | 1989-06-23 | 1990-01-24 | 煤炭科学研究总院南京研究所 | Tensible device of anchor shank |
| DE10017763B4 (en) * | 2000-04-10 | 2008-11-20 | Hilti Aktiengesellschaft | rock bolts |
| CN102926774B (en) * | 2012-11-20 | 2015-07-08 | 安徽理工大学 | Bolting and grouting process for governing roadway floor heave |
| CN106013189B (en) * | 2016-06-30 | 2018-08-21 | 重庆交通大学 | Slope retaining anchor system |
| CN205895284U (en) * | 2016-08-12 | 2017-01-18 | 中冶华天工程技术有限公司 | Anchor pipe and anchor support system |
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Effective date of registration: 20201214 Address after: 239300 Xinhe North Road, Chengbei street, Tianchang City, Chuzhou City, Anhui Province Applicant after: Tianchang Dacheng Construction Co.,Ltd. Address before: 100083 No. 30, Haidian District, Beijing, Xueyuan Road Applicant before: An Yuxia |
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