CN213926067U - Retaining wall for hydraulic engineering - Google Patents
Retaining wall for hydraulic engineering Download PDFInfo
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- CN213926067U CN213926067U CN202022796684.4U CN202022796684U CN213926067U CN 213926067 U CN213926067 U CN 213926067U CN 202022796684 U CN202022796684 U CN 202022796684U CN 213926067 U CN213926067 U CN 213926067U
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Abstract
The utility model belongs to the technical field of retaining wall, in particular to a retaining wall for hydraulic engineering, which comprises a substrate, a bearing wall surface, a buffering wall back and a foundation, wherein one side of the top end of the substrate is movably connected with the bearing wall surface, the bottom end of the substrate is fixedly connected with the foundation, one side of the inner part of the substrate is fixedly connected with a wall surface fixing column, the other side of the inner part of the substrate is fixedly connected with a wall back fixing column, the other side of the top end of the substrate is movably connected with the buffering wall back, the buffering wall back can buffer the beaten water and collect the silt written by the water flow, so that the retaining wall is more stable, when the water flow is beaten on the buffering wall back, the water flow is buffered, the sand carried in the water flow enters four wall back collecting tanks, and the filter screens in the three wall back collecting tanks downwards flow the water in the sand and is discharged through a wall back drainage hole, thereby the weight of messenger's buffering wall back of the body obtains increasing, the effectual practicality that improves retaining wall and use.
Description
Technical Field
The utility model belongs to the technical field of the retaining wall, specifically be a retaining wall for hydraulic engineering.
Background
At present, in hydraulic engineering such as river levees and the like, retaining walls are often used, the retaining walls refer to structures which support roadbed filling or hillside soil bodies and prevent the filling or soil bodies from deforming and destabilizing, and in the cross sections of the retaining walls, the parts which are directly contacted with the supported soil bodies are called wall backs; the part facing the wall back and being empty is called the wall surface; the part directly contacting with the foundation is called a substrate; the top surface of the wall opposite the base is called the wall top; the front end of the base is called a wall toe; the rear end of the base is called a wall heel, and can be divided into three types, namely a rigid retaining wall, a flexible retaining wall and a temporary support according to different rigidity and displacement modes of the retaining wall, and divided into a shoulder wall, a embankment wall, a cutting wall, a slope wall and the like according to different arrangement positions of the retaining wall.
The retaining wall practicality is low for current hydraulic engineering, poor stability, the structure of retaining wall inside support is stable inadequately, and the retaining wall can not be under construction through the mode of prefabricated installation, and current retaining wall for hydraulic engineering does not have the part of buffering rivers, pat water on the retaining wall and can not get the buffering, influence the stability of retaining wall, and do not carry out water conservancy diversion and exhaust part to the rainwater, easy ponding on the retaining wall, the retaining wall is perfect inadequately, be difficult to satisfy the demand of society.
Therefore, how to design a retaining wall for hydraulic engineering becomes a problem that needs to be solved currently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a retaining wall for hydraulic engineering to it is low to provide the practicality in solving above-mentioned background art, the poor problem of stability.
In order to achieve the above object, the utility model provides a following technical scheme: a retaining wall for hydraulic engineering comprises a base, a bearing wall surface, a buffering wall surface and a foundation, wherein one side of the top end of the base is movably connected with the bearing wall surface, the other side of the top end of the base is movably connected with the buffering wall surface, the bottom end of the base is fixedly connected with the foundation, one side of the inner part of the base is fixedly connected with a wall surface fixing column, the other side of the inner part of the base is fixedly connected with a wall surface fixing column, one side of the bottom end of the bearing wall surface is fixedly connected with a wall toe, one side inner wall of the bearing wall surface is embedded and connected with a drainage channel, the top end of the bearing wall surface is embedded and connected with a wall top, the middle part of the inner part of the bearing wall surface is embedded and connected with a wall surface connecting channel, the other side inner wall of the top of the buffering wall surface is embedded and connected with a first connecting channel of the wall top, the inner wall of one side of the top of the bearing wall surface is embedded and connected with a second connecting channel of the wall top, the buffer wall back is characterized in that wall back fixing grooves are connected to one sides of the front and the back of the buffer wall back in an embedded mode, wall face fixing grooves are connected to the other sides of the front and the back of the bearing wall face in an embedded mode, side reinforcing plates are connected to the inner side inner walls of the wall face fixing grooves in an embedded mode, reinforcing bolts penetrate through the middle positions of the two sides of the side reinforcing plates, a wall back collecting groove is connected to the inner side inner wall of the other side of the buffer wall back in an embedded mode, a filter screen is fixedly connected to the inner bottom inner wall of the inner side of the wall back collecting groove, and a wall back draining hole is connected to the other side of the bottom end of the wall back collecting groove in an embedded mode.
Preferably, wall top connecting plates are fixedly connected to two sides of the bottom of the wall top.
Preferably, the inner wall of one side of the wall toe is embedded and connected with a wall toe drainage groove.
Preferably, the bottom end of the drainage groove is connected with anti-skid lines in an embedded mode.
Preferably, the bearing wall surface is provided with a layer, the bearing wall surface is arranged on one side of the top end of the substrate, and the bearing wall surface is movably connected with the substrate.
Preferably, the buffering wall back is provided with a layer, the buffering wall back is arranged on the other side of the top end of the base, and the buffering wall back is movably connected with the base.
Compared with the prior art, the beneficial effects of the utility model are that:
1. retaining wall for hydraulic engineering, the bearing wall sets up in top one side of basement, bearing wall and basement swing joint, the bearing wall can improve the bearing capacity of retaining wall, and can be with the rainwater discharge of drippage on the retaining wall, avoids having too much ponding on the bearing wall and makes the retaining wall receive the long-time soaking of rainwater and receive erosion or damage.
2. Retaining wall for hydraulic engineering, the buffering wall back of the body, the setting of buffering wall back of the body is at the top opposite side of basement, buffering wall back of the body and basement swing joint, and the buffering wall back of the body can cushion the water of patting to the silt of writing rivers to collect, let the retaining wall more stable, the effectual practicality that has improved the retaining wall and use.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the point A of the present invention;
FIG. 3 is an enlarged view of the point B of the present invention;
FIG. 4 is an enlarged view of the point C of the present invention;
fig. 5 is a schematic view of the structure of the wall and toe of the present invention.
In the figure: 1. a substrate; 2. a load-bearing wall surface; 3. a buffer wall back; 4. a foundation; 5. a wall top; 6. a wall toe; 7. a water discharge tank; 8. anti-skid lines; 9. wall surface connecting grooves; 10. wall surface fixing columns; 11. wall back connecting grooves; 12. wall back fixing columns; 13. a wall top connecting plate; 14. a first connecting groove at the top of the wall; 15. a second connecting groove on the top of the wall; 16. a side reinforcing plate; 17. reinforcing the bolt; 18. a wall surface side fixing groove; 19. wall back side fixing grooves; 20. a wall back collecting tank; 21. a filter screen; 22. a wall back drainage hole; 23. wall toe water drainage tank.
Detailed Description
The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
In a first embodiment, please refer to fig. 1-5, the present invention provides a technical solution: a retaining wall for hydraulic engineering comprises a base 1, a bearing wall surface 2, a buffer wall back 3 and a foundation 4, wherein one side of the top end of the base 1 is movably connected with the bearing wall surface 2, the other side of the top end of the base 1 is movably connected with the buffer wall back 3, the bottom end of the base 1 is fixedly connected with the foundation 4, one side of the inner part of the base 1 is fixedly connected with a wall surface fixing column 10, the other side of the inner part of the base 1 is fixedly connected with a wall back fixing column 12, one side of the bottom end of the bearing wall surface 2 is fixedly connected with a wall toe 6, one side inner wall of the bearing wall surface 2 is embedded and connected with a drainage channel 7, the top end of the bearing wall surface 2 is embedded and connected with a wall top 5, the middle part of the inner part of the bearing wall surface 2 is embedded and connected with a wall surface connecting channel 9, the middle part of the inner part of the buffer wall back 3 is embedded and connected with a wall top connecting channel 11, the other side inner wall of the top of the buffer wall back 3 is embedded and connected with a wall top first connecting channel 14, the embedding of the top one side inner wall of bearing wall face 2 is connected with wall crown second spread groove 15, the embedding of the preceding and back one side of buffering back of the wall 3 is connected with wall dorsal part fixed slot 19, the embedding of the preceding and back opposite side of bearing wall face 2 is connected with wall face side fixed slot 18, the embedding of the inboard inner wall of wall face side fixed slot 18 is connected with side gusset plate 16, the both sides intermediate position through connection of side gusset plate 16 has reinforcing bolt 17, the embedding of the inboard inner wall of the opposite side of buffering back of the wall 3 is connected with back of the wall collecting vat 20, the inboard bottom inner wall fixedly connected with filter screen 21 of back of the wall collecting vat 20, the embedding of the bottom opposite side of back of the wall collecting vat 20 is connected with back of the wall wash port 22.
Preferably, both sides of the bottom of the wall top 5 are fixedly connected with wall top connecting plates 13, the wall top 5 is contacted with the bearing wall surface 2 and the buffer wall back 3, and the wall top connecting plate 13 is respectively connected with a wall top second connecting groove 15 arranged on the bearing wall surface 2 and a wall top first connecting groove 14 arranged on the buffer wall back 3, when the wall top 5 is installed, the top end of the inner side of the wall top 5 is only required to be attached to the top ends of the bearing wall surface 2 and the buffer wall back 3, and the wall top 5 is moved from front to back, so that the wall top connecting plate 13 is embedded into the wall top second connecting groove 15 arranged on the bearing wall surface 2 and the wall top first connecting groove 14 arranged on the buffer wall back 3, thereby be connected the wall top 5 with bearing wall 2 and buffering wall back 3 and fix the top of bearing wall 2 and buffering wall back 3, wall top connecting plate 13 has played fixed with bearing wall 2 and buffering wall back 3's effect.
Preferably, one side inner wall embedding of wall toe 6 is connected with wall toe water drainage tank 23, wall toe 6 is connected with bearing wall 2, and be provided with water drainage tank 7 on the bearing wall 2, water that the inslot 7 internal flow is downed will flow in the wall toe water drainage tank 23 that wall toe 6 set up, wall toe water drainage tank 23 is the steep recess of the mild top arc of bottom arc, make water that water drainage tank 7 flows in wall toe water drainage tank 23 can obtain the buffering when striking wall toe water drainage tank 23, thereby reduce the velocity of flow of rivers, avoid wall toe water drainage tank 23 discharged water to break down the ground toe soil of bearing wall 2 bottom one side, wall water drainage tank 23 has played the effect of the velocity of flow of buffering drainage.
Preferably, the bottom embedding of water drainage tank 7 is connected with anti-skidding line 8, water drainage tank 7 sets up in bearing wall 2, and when will installing with the wall crown 5 of bearing wall 2 contact, need staff or constructor to climb the operation of carrying out the installation on bearing wall 2, water drainage tank 7 can let staff or constructor step on the bottom at water drainage tank 7, use water drainage tank 7 as stair, when staff or constructor's foot is stepped on in water drainage tank 7, staff or constructor's foot and anti-skidding line 8 contact, anti-skidding line 8 is coarse line, can increase the frictional force of staff or constructor's foot and the contact of anti-skidding line 8, avoid staff or constructor to step on the condition that takes place the cunning when water drainage tank 7, the effectual antiskid nature that improves anti-skidding line 8.
Preferably, the bearing wall surface 2 is provided with a layer, the bearing wall surface 2 is arranged on one side of the top end of the substrate 1, the bearing wall surface 2 is movably connected with the substrate 1, the bearing wall surface 2 can improve the bearing capacity of the retaining wall and can discharge rainwater dropping on the retaining wall to prevent the retaining wall from being eroded or damaged due to long-time soaking of rainwater caused by excessive water accumulation on the bearing wall surface 2, three wall surface connecting grooves 9 are arranged in the bearing wall surface 2, the three wall surface fixing columns 10 are fixed in the substrate 1 in a pouring mode, one side of the bearing wall surface 2 is an inclined surface, side surface fixing grooves 18 on the bearing wall surface 2 and wall back side fixing grooves 19 on the buffer wall back 3 are embedded with side reinforcing plates 16, two reinforcing bolts 17 are arranged on the side reinforcing plates 16, when the bearing wall surface 2 is installed, only the wall surface connecting grooves 9 on the bearing wall surface 2 need to be aligned with the wall surface fixing columns 10, then with bearing wall 2 from last to removing down, make wall spread groove 9 nestification outside wall fixed column 10, then with side gusset plate 16 embedding wall side fixed slot 18 and wall back side fixed slot 19 in, run through side gusset plate 16 with reinforcing bolt 17 again and imbed in bearing wall 2 and buffering wall back 3, thereby fix bearing wall 2 and buffering wall back 3, make bearing wall 2 be connected and fixed with buffering wall back 3, and the rainwater that flows onto bearing wall 2 leads and discharges through the inclined plane of bearing wall 2 one side, support through three wall fixed columns 10 in the bearing wall 2, make the fixed of bearing wall 2 more stable, the effectual fixed stability of bearing wall 2 that has improved.
Preferably, the buffering wall back 3 is provided with a layer, the buffering wall back 3 is arranged at the other side of the top end of the substrate 1, the buffering wall back 3 is movably connected with the substrate 1, the buffering wall back 3 can buffer beaten water and collect silt written by water flow, the weight of the buffering wall back 3 is increased to enable the retaining wall to be more stable, the buffering wall back 3 is provided with four wall back collecting tanks 20, the heights of the four wall back collecting tanks 20 are gradually increased, filter screens 21 are arranged in the three wall back collecting tanks 20 and are communicated with wall back water drainage holes 22, three wall back connecting grooves 11 are arranged in the buffering wall back 3, the substrate 1 places three wall back fixing columns 12 through pouring, when the buffering wall back 3 is installed, the wall back connecting grooves 11 are firstly aligned with the wall back fixing columns 12, then the buffering wall back 3 is moved from front to back, so that the wall back connecting grooves 11 are nested outside the wall back fixing columns 12, when rivers are patted on buffering wall back 3 for rivers are patted when buffering wall back 3 is gone up, and rivers obtain the buffering, and the gravel and sand that carries in the rivers get into four wall back collecting grooves 20, and wherein the filter screen 21 in the three wall back collecting groove 20 flows down the rivers in the gravel and discharges through wall back wash port 22, thereby makes the weight of buffering wall back 3 obtain increasing, lets the retaining wall more stable, the effectual practicality that improves the retaining wall use.
The working principle is as follows: firstly, checking whether the wall top connecting plate 13 is damaged or not, fixedly connecting the wall top connecting plate 13 on two sides of the bottom of the wall top 5, contacting the wall top 5 with the bearing wall surface 2 and the buffer wall back 3, and the wall top connecting plate 13 is respectively connected with a wall top second connecting groove 15 arranged on the bearing wall surface 2 and a wall top first connecting groove 14 arranged on the buffer wall back 3, when the wall top 5 is installed, the top end of the inner side of the wall top 5 is only required to be attached to the top ends of the bearing wall surface 2 and the buffer wall back 3, and the wall top 5 is moved from front to back, so that the wall top connecting plate 13 is embedded into the wall top second connecting groove 15 arranged on the bearing wall surface 2 and the wall top first connecting groove 14 arranged on the buffer wall back 3, thereby connecting the wall top 5 with the bearing wall surface 2 and the buffer wall back 3 and fixing the top ends of the bearing wall surface 2 and the buffer wall back 3, and the wall top connecting plate 13 plays a role in fixing the bearing wall surface 2 and the buffer wall back 3;
then, whether the wall toe drainage grooves 23 can be normally used or not is checked, the wall toe drainage grooves 23 are embedded and connected into the inner wall of one side of the wall toe 6, the wall toe 6 is connected with the bearing wall surface 2, the drainage grooves 7 are formed in the bearing wall surface 2, water flowing down from the drainage grooves 7 can flow into the wall toe drainage grooves 23 formed in the wall toe 6, the wall toe drainage grooves 23 are grooves with gentle bottom arcs and steep top arcs, so that water flowing into the wall toe drainage grooves 23 from the drainage grooves 7 can be buffered when impacting the wall toe drainage grooves 23, the flow velocity of water flow is reduced, the situation that the ground soil on one side of the bottom of the bearing wall surface 2 is eroded by the water discharged from the wall toe drainage grooves 23 is avoided, and the wall toe drainage grooves 23 play a role in buffering the flow velocity of drainage;
then, checking the abrasion degree of the anti-skid grains 8, embedding and connecting the anti-skid grains 8 at the bottom end of the drainage groove 7, arranging the drainage groove 7 in the bearing wall surface 2, when the wall top 5 contacted with the bearing wall surface 2 is installed, workers or constructors need to climb onto the bearing wall surface 2 for installation operation, the drainage channel 7 can lead the workers or the constructors to step on the bottom end of the drainage channel 7, the drainage channel 7 is used as a stair, when the feet of the workers or constructors step on the drainage channel 7, the feet of the workers or constructors contact with the anti-skid lines 8, the anti-skid lines 8 are rough lines, the friction force of the contact between the feet of the workers or the constructors and the anti-skid patterns 8 can be increased, the situation that the workers or the constructors slip when stepping in the drainage grooves 7 is avoided, and the anti-skid property of the anti-skid patterns 8 is effectively improved;
next, the retaining wall is weighed and supported through the bearing wall surface 2, the bearing wall surface 2 is provided with a layer, the bearing wall surface 2 is arranged on one side of the top end of the substrate 1, the bearing wall surface 2 is movably connected with the substrate 1, the bearing wall surface 2 can improve the bearing capacity of the retaining wall and can discharge rainwater dropping on the retaining wall to prevent the retaining wall from being eroded or damaged due to long-time soaking of rainwater on the retaining wall due to excessive water accumulation on the bearing wall surface 2, three wall connecting grooves 9 are arranged in the bearing wall surface 2, three wall fixing columns 10 are fixed in the substrate 1 in a pouring mode, one side of the bearing wall surface 2 is an inclined surface, a side reinforcing plate 16 is embedded into a wall surface side fixing groove 18 on the bearing wall surface 2 and a wall back side fixing groove 19 on the buffer wall back 3, two reinforcing bolts 17 are arranged on the side reinforcing plate 16, when the bearing wall surface 2 is installed, only the wall connecting grooves 9 on the bearing wall surface 2 are aligned to the wall fixing columns 10, then the bearing wall surface 2 is moved from top to bottom, the wall connecting grooves 9 are embedded outside the wall fixing columns 10, then the side reinforcing plates 16 are embedded into the wall surface side fixing grooves 18 and the wall back side fixing grooves 19, then the reinforcing bolts 17 penetrate through the side reinforcing plates 16 and are embedded into the bearing wall surface 2 and the buffer wall back 3, so that the bearing wall surface 2 and the buffer wall back 3 are fixed, the bearing wall surface 2 and the buffer wall back 3 are connected and fixed, rainwater flowing onto the bearing wall surface 2 is guided and discharged through the inclined surface on one side of the bearing wall surface 2, the bearing wall surface 2 is supported through the three wall fixing columns 10, the bearing wall surface 2 is more stably fixed, and the stability of the fixing of the bearing wall surface 2 is effectively improved;
finally, the buffering wall back 3 is buffered by the impact of water flow received by the buffering wall back 3, the buffering wall back 3 is provided with a layer, the buffering wall back 3 is arranged at the other side of the top end of the substrate 1, the buffering wall back 3 is movably connected with the substrate 1, the buffering wall back 3 can buffer beaten water and collect silt written by the water flow, the weight of the buffering wall back 3 is increased to ensure that the retaining wall is more stable, the buffering wall back 3 is provided with four wall back collecting tanks 20, the heights of the four wall back collecting tanks 20 are gradually increased, filter screens 21 are arranged in the three wall back collecting tanks 20 and are communicated with wall back drain holes 22, three wall back connecting grooves 11 are arranged in the buffering wall back 3, the substrate 1 places three wall back fixing columns 12 through pouring, when the buffering wall back 3 is installed, the wall back connecting grooves 11 are firstly aligned with the wall back fixing columns 12, then the buffering wall back 3 is moved from front to back, make wall back spread groove 11 nestification outside wall back fixed column 12, when rivers are patted on buffering wall back 3, make rivers pat when buffering wall back 3, rivers obtain the buffering, the gravel and sand that carries in the rivers get into four wall back collecting vat 20, and wherein the filter screen 21 in the three wall back collecting vat 20 rivers in with the gravel and sand down and discharge through wall back wash port 22, thereby make the weight of buffering wall back 3 obtain increasing, let the retaining wall more stable, the effectual practicality that improves the retaining wall and use, this kind of retaining wall for hydraulic engineering's theory of operation.
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 (7)
1. The utility model provides a retaining wall for hydraulic engineering, includes basement (1), bearing wall (2), buffering wall back (3) and ground (4), its characterized in that: one side of the top end of the substrate (1) is movably connected with a bearing wall surface (2), the other side of the top end of the substrate (1) is movably connected with a buffering wall back (3), the bottom end of the substrate (1) is fixedly connected with a foundation (4), one side of the inside of the substrate (1) is fixedly connected with a wall surface fixing column (10), the other side of the inside of the substrate (1) is fixedly connected with a wall back fixing column (12), one side of the bottom end of the bearing wall surface (2) is fixedly connected with a wall toe (6), one side of the inner wall of the bearing wall surface (2) is embedded and connected with a drainage groove (7), the top end of the bearing wall surface (2) is embedded and connected with a wall top (5), the middle part of the inside of the bearing wall surface (2) is embedded and connected with a connecting groove wall surface (9), and the middle part of the inside of the buffering wall back (3) is embedded and connected with a wall back connecting groove (11), the embedding of the top opposite side inner wall of buffering back of wall (3) is connected with the first connecting groove of wall top (14), the embedding of top one side inner wall of bearing wall (2) is connected with wall top second connecting groove (15), the embedding of the preceding and back one side of buffering back of wall (3) is connected with back of wall side fixed slot (19), the preceding and back opposite side embedding of bearing wall (2) is connected with wall side fixed slot (18), the inboard inner wall embedding of wall side fixed slot (18) is connected with side gusset plate (16), the both sides intermediate position through connection of side gusset plate (16) has reinforcing bolt (17).
2. A retaining wall for hydraulic engineering according to claim 1, characterized in that: the inner wall of the inner side of the other side of the buffering wall back (3) is connected with a wall back collecting groove (20) in an embedded mode, the inner wall of the bottom of the inner side of the wall back collecting groove (20) is fixedly connected with a filter screen (21), and the other side of the bottom end of the wall back collecting groove (20) is connected with a wall back drainage hole (22) in an embedded mode.
3. A retaining wall for hydraulic engineering according to claim 1, characterized in that: and two sides of the bottom of the wall top (5) are fixedly connected with wall top connecting plates (13).
4. A retaining wall for hydraulic engineering according to claim 1, characterized in that: and a wall toe drainage groove (23) is embedded and connected into the inner wall of one side of the wall toe (6).
5. A retaining wall for hydraulic engineering according to claim 1, characterized in that: the bottom end of the drainage groove (7) is embedded and connected with anti-skid lines (8).
6. A retaining wall for hydraulic engineering according to claim 1, characterized in that: the bearing wall surface (2) is provided with a layer, the bearing wall surface (2) is arranged on one side of the top end of the substrate (1), and the bearing wall surface (2) is movably connected with the substrate (1).
7. A retaining wall for hydraulic engineering according to claim 1, characterized in that: the buffer wall back (3) is provided with a layer, the buffer wall back (3) is arranged on the other side of the top end of the base (1), and the buffer wall back (3) is movably connected with the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022796684.4U CN213926067U (en) | 2020-11-27 | 2020-11-27 | Retaining wall for hydraulic engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022796684.4U CN213926067U (en) | 2020-11-27 | 2020-11-27 | Retaining wall for hydraulic engineering |
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| Publication Number | Publication Date |
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| CN213926067U true CN213926067U (en) | 2021-08-10 |
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| CN202022796684.4U Active CN213926067U (en) | 2020-11-27 | 2020-11-27 | Retaining wall for hydraulic engineering |
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| CN (1) | CN213926067U (en) |
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