CN112921889A - Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure - Google Patents
Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure Download PDFInfo
- Publication number
- CN112921889A CN112921889A CN202110387383.2A CN202110387383A CN112921889A CN 112921889 A CN112921889 A CN 112921889A CN 202110387383 A CN202110387383 A CN 202110387383A CN 112921889 A CN112921889 A CN 112921889A
- Authority
- CN
- China
- Prior art keywords
- concrete
- polygonal
- stepped honeycomb
- rib plate
- concrete stepped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Revetment (AREA)
Abstract
The invention provides an assembled concrete stepped honeycomb-shaped coast erosion prevention structure, and belongs to the field of coast protection. The direction from the ocean side to the coast side is transverse, each layer of concrete stepped honeycomb building blocks are sequentially arranged end to end in the transverse direction, and a first polygonal rib plate and a second polygonal rib plate of adjacent concrete stepped honeycomb building blocks are mutually attached; the direction vertical to the sea side to the coast side is longitudinal, in the longitudinal direction, one obtuse angle tooth on each side of the concrete stepped honeycomb building block is matched with the obtuse angle groove of the adjacent row of concrete stepped honeycomb building blocks, and the other obtuse angle tooth is matched with the obtuse angle groove formed on the slope surface at the joint of the two adjacent rows of concrete stepped honeycomb building blocks. The invention has the advantages that the sand flow from the coast to the sea is inhibited, the sand flowing along with the near-shore flow is collected, and the erosion of the coast is relieved; the design is reasonable, and the operation is convenient; the method has the advantages that the industrial manufacturing is adopted, the construction efficiency is improved, the dismantled building materials can be recycled, and the waste is avoided.
Description
Technical Field
The invention relates to the field of coast protection, in particular to an assembled concrete stepped honeycomb-shaped coast anti-erosion structure.
Background
The coastal zone is positioned at the junction of ocean, land and air, is a very sensitive zone, and is very easy to cause unbalanced silt collection and distribution of the coast under the influence of wind, wave, tide, flow and human activities, so that a series of coastal erosion phenomena such as coastline retreating, beach erosion and the like are caused. According to a 908 special investigation result report, the total erosion shoreline of continental coasts in China is 3255.3km, and the erosion of sandy coasts is 2463.4 km, which accounts for 49.5% of sandy coasts in China; the erosion of the silt coastline is 791.9km, which accounts for 7.3 percent of silt coasts in China, and seriously influences the sustainable development of ocean economy. The protection and repair of coastal erosion are brought forward, hard protection such as a seawall, a breakwater and a spur dike and a few soft protection are mostly adopted in the coast before, along with green environmental protection and deep humanity, the method also carries out and responds to 'development of blue bay renovation action' in China, and the national overall support places develop ecological repair engineering such as 'blue bay', 'south red north willow' and 'ecological reef island', and it can be seen that the future protection and repair are mainly ecological protection and repair.
For a long time, the coastal erosion degree is aggravated by a series of human activities and natural disasters which are difficult to predict, and relevant scholars do a great deal of work aiming at erosion phenomena of different erosion, so that scientific basis is provided for protection and repair of coastal zones. The relevant theoretical research conditions of coastal erosion in recent years at home and abroad, including coastal erosion mechanism, erosion reason and harm, are briefly described and discussed, the method for coastal protection and restoration is explored, and corresponding thinking is provided from the aspects of research methods, means and the like.
The sand beach of the coast is generated by accumulation of sand supplied from a river on land, a sand dune on the coast, and the sand supplied in a natural state is balanced with a phenomenon in which sand runs into the sea due to waves, so that the sand beach is maintained.
On the other hand, coastal sandy beach is not only in terms of environmental protection but also in terms of popularity in various ocean leisure sports, and the importance of this is also becoming prominent as a sightseeing resource, but because the shoreside of a river is buried or blocked by a concrete dike in river regulation works, the amount of sand flowing into the sea is drastically reduced due to the reduction of natural greenbelts caused by urban facility construction, the disappearance of coastal sand dunes caused by the burying, and the like, and the phenomenon of the reduction of the coastal sandy beach occurs.
According to the bank protection mode, the waves are pushed to the bank protection to scour the front of the bank protection, and sand loss cannot be prevented. The manual beach maintenance method in which sand is artificially input not only requires a large amount of expenses for sand collection and transportation but also is not a fundamental measure for preventing sand loss, and thus has a burden of continuously supplying sand.
Disclosure of Invention
In order to solve the technical problems, the invention provides an assembled concrete stepped honeycomb type coastal anti-erosion structure which not only can achieve the coastal anti-erosion effect, but also can be conveniently removed after the protection requirement is finished.
The technical scheme adopted by the invention is as follows:
the assembled concrete stepped honeycomb-shaped shore anti-erosion structure is mainly formed by splicing concrete stepped honeycomb blocks, the direction from the ocean side to the coast side is transverse, the cross section of each layer of concrete stepped honeycomb blocks is integrally triangular from the top end to the bottom end in the transverse direction, the concrete stepped honeycomb blocks in each layer are sequentially arranged end to end in the transverse direction, and a first polygonal rib plate and a second polygonal rib plate of adjacent concrete stepped honeycomb blocks are tightly attached to each other;
the direction perpendicular to the sea side to the coast side is longitudinal, in the longitudinal direction, one obtuse angle tooth on each side of the concrete stepped honeycomb building block is matched with the obtuse angle groove of the adjacent row of concrete stepped honeycomb building blocks, and the other obtuse angle tooth is matched with the obtuse angle groove formed on the slope surface at the joint of the two adjacent rows of concrete stepped honeycomb building blocks;
the placing directions of the adjacent upper and lower layers of concrete stepped honeycomb blocks in end-to-end connection are opposite, wherein the first polygonal rib plates of the concrete stepped honeycomb blocks of odd number layers point to one side of the sea, and the first polygonal rib plates of the concrete stepped honeycomb blocks of even number layers point to one side of the coast;
the upper concrete stepped honeycomb blocks of two adjacent layers of concrete stepped honeycomb blocks are all retracted by half of the length of the concrete stepped honeycomb blocks than the lower concrete stepped honeycomb blocks on one side of the sea and one side of the coast, the lower half groove of the upper concrete stepped honeycomb blocks is matched with the upper concrete tooth of the adjacent next layer of concrete stepped honeycomb blocks, and the lower concrete tooth of the upper concrete stepped honeycomb blocks is matched with the upper half groove of the adjacent next layer of concrete stepped honeycomb blocks.
Further, the concrete stepped honeycomb block is composed of a first polygonal rib plate, a second polygonal rib plate, an upper half groove, a lower half groove, upper concrete teeth, lower concrete teeth, a first polygonal sand accumulation hole, a second polygonal sand accumulation hole, obtuse angle teeth, obtuse angle grooves, a slope surface and steps;
the horizontal projections of the first polygonal rib plate and the second polygonal rib plate are identical regular hexagons, a first polygonal sand accumulation hole and a second polygonal sand accumulation hole which are vertically communicated and identical regular hexagons are respectively arranged in the first polygonal rib plate and the second polygonal rib plate, and one edge of the first polygonal rib plate is overlapped with one edge of the second polygonal rib plate;
the first polygonal rib plate and the second polygonal rib plate have the same height and have the same height difference (no specific limitation is needed) from top to bottom, so that a step is formed; the first polygonal rib plate is provided with lower concrete teeth which are convex downwards at the bottom, and an upper half groove which is concave downwards at the top; the second polygonal ribbed slab forms upward convex upper concrete teeth at the top, and forms upward concave lower half-groove at the bottom;
the two sides of the joint of the first polygonal ribbed plate and the second polygonal ribbed plate respectively form inward concave obtuse angle grooves with included angles of 120 degrees;
the 120-degree angle which is adjacent to the obtuse angle groove and protrudes outwards on each concrete stepped honeycomb building block is an obtuse angle tooth;
the plane of the outer edge of the 4 obtuse angle teeth forms a slope surface with the end part concave inwards.
The invention has the advantages that:
the sand flow from the coast to the sea is inhibited, and the sand flowing along with the near-shore flow is captured, so that the erosion of the coast is relieved, and the coastal beach is protected; the technology has reasonable design and convenient operation; the method has the advantages that the industrial manufacturing and construction are adopted, the engineering quantity is effectively reduced, the construction efficiency is improved, the removed building materials can be recycled, and the waste of the building materials is avoided.
Drawings
FIG. 1 is a schematic front view of a concrete stepped honeycomb block;
FIG. 2 is a schematic top view of a concrete stepped honeycomb block;
FIG. 3 is a schematic vertical cross-sectional view of an assembled concrete stepped honeycomb-shaped shore erosion prevention structure;
FIG. 4 is a schematic top view of an assembled concrete stepped honeycomb-shaped shore erosion prevention structure.
In the figure, 1 is a first polygonal rib; 2 is a second polygonal rib plate; 3 is an upper half groove; 4 is a lower half groove; 5 is an upper concrete tooth; 6 is lower concrete tooth; 7 is a first polygonal sand accumulation hole; 8 is a second polygonal sand accumulation hole; 9 is obtuse angle tooth; 10 is a blunt angle groove; 11 is a slope surface; 12 is a step.
Detailed Description
In order to further illustrate the present invention, the following detailed description of the present invention is given with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
The fabricated concrete stepped honeycomb-shaped sea shore anti-corrosion structure provided by the invention is shown in figures 1-4.
The utility model provides a cellular coast anti-erosion structure of assembled concrete ladder, mainly assembles by the cellular building block of concrete ladder and forms: the direction from the ocean side to the coast side is transverse, the cross section of each layer of concrete stepped honeycomb blocks is integrally triangular from the top end to the bottom end in the transverse direction, the concrete stepped honeycomb blocks in each layer are sequentially arranged end to end in the transverse direction, and the first polygonal rib plate 1 and the second polygonal rib plate 2 of the adjacent concrete stepped honeycomb blocks are tightly attached to each other;
the direction vertical to the sea side to the coast side is longitudinal, in the longitudinal direction, one obtuse angle tooth 9 on each side of the concrete stepped honeycomb building block is matched with an obtuse angle groove 10 of an adjacent row of concrete stepped honeycomb building blocks, and the other obtuse angle tooth 9 is matched with an obtuse angle groove formed on a slope 11 at the joint of two adjacent rows of concrete stepped honeycomb building blocks;
the placing directions of the adjacent upper and lower layers of concrete stepped honeycomb blocks in end-to-end connection are opposite, wherein the first polygonal rib plates 1 of the concrete stepped honeycomb blocks of odd number layers point to one side of the sea, and the first polygonal rib plates 1 of the concrete stepped honeycomb blocks of even number layers point to one side of the coast;
the upper concrete stepped honeycomb blocks of two adjacent layers of concrete stepped honeycomb blocks are all retracted by half of the length of the concrete stepped honeycomb blocks than the lower concrete stepped honeycomb blocks on one side of the sea and one side of the coast, the lower half groove 4 of the upper concrete stepped honeycomb block is matched with the upper concrete tooth 5 of the adjacent next layer of concrete stepped honeycomb block, and the lower concrete tooth 6 of the upper concrete stepped honeycomb block is matched with the upper half groove 3 of the adjacent next layer of concrete stepped honeycomb block.
The concrete stepped honeycomb building block is composed of a first polygonal rib plate 1, a second polygonal rib plate 2, an upper half groove 3, a lower half groove 4, an upper concrete tooth 5, a lower concrete tooth 6, a first polygonal sand accumulation hole 7, a second polygonal sand accumulation hole 8, an obtuse angle tooth 9, an obtuse angle groove 10, a slope 11 and a step 12;
the horizontal projections of the first polygonal rib plate 1 and the second polygonal rib plate 2 are the same regular hexagon, the interior of the first polygonal rib plate 1 and the interior of the second polygonal rib plate 2 are respectively provided with a first polygonal sand accumulation hole 7 and a second polygonal sand accumulation hole 8 which are vertically communicated and have the same regular hexagon, and one edge of the first polygonal rib plate 1 is overlapped with one edge of the second polygonal rib plate 2;
the first polygonal rib plate 1 and the second polygonal rib plate 2 have the same height and the same height difference (no specific limitation is needed, a step 12 is formed, a lower concrete tooth 6 which is convex downwards is formed at the bottom of the first polygonal rib plate 1, an upper half groove 3 which is concave downwards is formed at the top of the first polygonal rib plate 1, an upper concrete tooth 5 which is convex upwards is formed at the top of the second polygonal rib plate 2, and a lower half groove 4 which is concave upwards is formed at the bottom of the second polygonal rib plate 2;
the two sides of the joint of the first polygonal ribbed plate 1 and the second polygonal ribbed plate 2 respectively form inward concave obtuse angle grooves 10 with included angles of 120 degrees;
the 120-degree angle which is adjacent to the obtuse angle groove 10 and protrudes outwards on each concrete stepped honeycomb building block is an obtuse angle tooth 9;
the plane in which the outer edges of the 4 obtuse teeth 9 lie forms a ramp 11 whose end is recessed inwards.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. An assembled concrete stepped honeycomb-shaped shore anti-erosion structure is mainly formed by splicing concrete stepped honeycomb blocks and is characterized in that the direction from the sea side to the coast side is transverse, the cross section of the structure from the top end to the bottom end is integrally triangular in the transverse direction, each layer of concrete stepped honeycomb blocks are sequentially arranged end to end in the transverse direction, and a first polygonal rib plate (1) and a second polygonal rib plate (2) of adjacent concrete stepped honeycomb blocks are tightly attached to each other; the direction vertical to the sea side to the coast side is longitudinal, in the longitudinal direction, one obtuse angle tooth (9) on each side of the concrete stepped honeycomb building block is matched with an obtuse angle groove (10) of an adjacent row of concrete stepped honeycomb building blocks, and the other obtuse angle tooth (9) is matched with an obtuse angle groove formed by a slope surface (11) at the joint of two adjacent rows of concrete stepped honeycomb building blocks; the placing directions of the adjacent upper and lower layers of concrete stepped honeycomb blocks which are connected end to end are opposite, wherein the first polygonal rib plates (1) of the concrete stepped honeycomb blocks of the odd number layers point to one side of the sea, and the first polygonal rib plates (1) of the concrete stepped honeycomb blocks of the even number layers point to one side of the coast; the upper concrete stepped honeycomb blocks of two adjacent layers of concrete stepped honeycomb blocks are all retracted by half of the length of the concrete stepped honeycomb blocks than the lower concrete stepped honeycomb blocks on one side of the sea and one side of the coast, the lower half groove (4) of the upper concrete stepped honeycomb blocks is matched with the upper concrete tooth (5) of the adjacent lower concrete stepped honeycomb blocks, and the lower concrete tooth (6) of the upper concrete stepped honeycomb blocks is matched with the upper half groove (3) of the adjacent lower concrete stepped honeycomb blocks.
2. The fabricated concrete stepped honeycomb shore erosion prevention structure of claim 1, wherein: the concrete stepped honeycomb building block is composed of a first polygonal rib plate (1), a second polygonal rib plate (2), an upper half groove (3), a lower half groove (4), upper concrete teeth (5), lower concrete teeth (6), a first polygonal sand accumulation hole (7), a second polygonal sand accumulation hole (8), obtuse angle teeth (9), an obtuse angle groove (10), a slope surface (11) and steps (12); the horizontal projections of the first polygonal rib plate (1) and the second polygonal rib plate (2) are the same regular hexagon, the interior of the first polygonal rib plate (1) and the interior of the second polygonal rib plate (2) are respectively a first polygonal sand accumulation hole (7) and a second polygonal sand accumulation hole (8) which are the same regular hexagon and are vertically communicated, and one edge of the first polygonal rib plate (1) and one edge of the second polygonal rib plate (2) are overlapped; the first polygonal rib plate (1) and the second polygonal rib plate (2) have the same height and have the same height difference from top to bottom (no specific limitation is needed), and a step (12) is formed; the bottom of the first polygonal rib plate (1) is provided with lower concrete teeth (6) which are convex downwards, and the top of the first polygonal rib plate (1) is provided with an upper half groove (3) which is concave downwards; the second polygonal rib plate (2) is provided with an upper concrete tooth (5) which is convex upwards at the top, and the second polygonal rib plate (2) is provided with a lower half groove (4) which is concave upwards at the bottom; the two sides of the joint of the first polygonal ribbed plate (1) and the second polygonal ribbed plate (2) respectively form inward concave obtuse angle grooves (10) with included angles of 120 degrees; an obtuse angle tooth (9) is arranged on each concrete stepped honeycomb block, is adjacent to the obtuse angle groove (10) and protrudes outwards at an angle of 120 degrees; the plane of the outer edge of the 4 obtuse angle teeth (9) forms a slope surface (11) with the end part concave inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387383.2A CN112921889A (en) | 2021-04-12 | 2021-04-12 | Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387383.2A CN112921889A (en) | 2021-04-12 | 2021-04-12 | Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112921889A true CN112921889A (en) | 2021-06-08 |
Family
ID=76174012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110387383.2A Withdrawn CN112921889A (en) | 2021-04-12 | 2021-04-12 | Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112921889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230039419A1 (en) * | 2021-08-05 | 2023-02-09 | Erick Pons | Reef and shoreline restoration, retention, and protection passive, non-ferrous, non-reactive precast solution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064986A (en) * | 1999-08-25 | 2001-03-13 | Shizen To Kankyo:Kk | Ecology stabilization block |
| CN2780828Y (en) * | 2005-01-23 | 2006-05-17 | 安徽康特新型建材有限责任公司 | Plane interlock slope protection block |
| CN109235365A (en) * | 2018-10-29 | 2019-01-18 | 中水电第十工程局（郑州）有限公司 | A kind of self-locking ecological revetment brick construction method |
| CN210315649U (en) * | 2019-04-15 | 2020-04-14 | 武汉车都环保再生资源有限公司 | Environment-friendly retaining wall building block |
-
2021
- 2021-04-12 CN CN202110387383.2A patent/CN112921889A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064986A (en) * | 1999-08-25 | 2001-03-13 | Shizen To Kankyo:Kk | Ecology stabilization block |
| CN2780828Y (en) * | 2005-01-23 | 2006-05-17 | 安徽康特新型建材有限责任公司 | Plane interlock slope protection block |
| CN109235365A (en) * | 2018-10-29 | 2019-01-18 | 中水电第十工程局（郑州）有限公司 | A kind of self-locking ecological revetment brick construction method |
| CN210315649U (en) * | 2019-04-15 | 2020-04-14 | 武汉车都环保再生资源有限公司 | Environment-friendly retaining wall building block |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230039419A1 (en) * | 2021-08-05 | 2023-02-09 | Erick Pons | Reef and shoreline restoration, retention, and protection passive, non-ferrous, non-reactive precast solution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109778798B (en) | Multistage hole pipe weir flow dividing and silt discharging method | |
| CN112921889A (en) | Fabricated concrete stepped honeycomb-shaped shore anti-erosion structure | |
| CN113006144A (en) | Permeable structure tunnel structure | |
| CN203821306U (en) | Flexible anti-scour protection pad | |
| CN113356131B (en) | Fabricated concrete stepped cross block seashore erosion prevention structure | |
| CN113373862B (en) | Fabricated concrete double-hole tooth socket block sea shore erosion prevention structure | |
| CN103711143B (en) | The jointing of a kind of transportation by driving formula diversion box culvert ground stabilization and construction method | |
| CN113089569A (en) | Fabricated concrete lattice type coast erosion prevention structure | |
| CN210899012U (en) | Be applied to photovoltaic power generation structure of breakwater | |
| CN113073608A (en) | Fabricated concrete arc angle fan-shaped block sea shore erosion prevention structure | |
| CN210459142U (en) | High arch dam protection energy dissipation system adopting water-permeable bottom plate | |
| CN113089568A (en) | Fabricated concrete overhanging plate lattice block coastal water erosion prevention structure | |
| CN113373863B (en) | Fabricated concrete lattice side connection block sea shore anti-erosion structure | |
| CN113279365A (en) | Assembled concrete combination sand accumulation hole seashore erosion prevention structure | |
| CN113216079A (en) | Fabricated concrete I-shaped plate sea shore erosion prevention structure | |
| CN107130644A (en) | Coffering composite geo-membrane and gravelly clay combination against seepage construction method | |
| CN113931125A (en) | Fabricated concrete layer secondary block seashore anti-erosion structure | |
| CN220414123U (en) | Rock-fill dam low reaches slope protection structure | |
| CN113356132B (en) | Fabricated concrete open lattice block seashore anti-erosion structure | |
| CN219653743U (en) | Double-deck annular cofferdam of convenient maintenance | |
| CN215857143U (en) | Tubular pile round culvert combined type open sea-entering road structure | |
| CN204728288U (en) | Chain prefabricated section mask anti-scour trench | |
| CN113089567A (en) | Fabricated concrete lattice group array coast erosion prevention structure | |
| CN218712588U (en) | A permeable type sheet pile spur dike for sand beach erosion protection | |
| CN203684270U (en) | Foundation reinforcing and connecting connector of floating type water diversion box culvert |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210608 |