CN113047218A - Hydraulic engineering construction water retaining device of equipment type - Google Patents
Hydraulic engineering construction water retaining device of equipment type Download PDFInfo
- Publication number
- CN113047218A CN113047218A CN202110334244.3A CN202110334244A CN113047218A CN 113047218 A CN113047218 A CN 113047218A CN 202110334244 A CN202110334244 A CN 202110334244A CN 113047218 A CN113047218 A CN 113047218A
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- Prior art keywords
- supporting
- water retaining
- ring
- supporting seat
- hydraulic engineering
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- 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
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
-
- 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
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
- E02B3/106—Temporary dykes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses an assembled water conservancy project construction water retaining device in the technical field of water conservancy construction, which comprises a supporting seat and a water retaining plate, wherein the supporting seat is positioned on the ground, one side of the supporting seat is fixedly connected with a supporting upright post, the cross section of the supporting upright post is circular, the water retaining plate is movably connected between the adjacent supporting upright posts, a triangular plug is welded on the lower surface of the water retaining plate, a top beam is fixedly connected on the inner side wall of the adjacent supporting upright post and positioned right above the water retaining plate, a threaded rod is vertically inserted into the inner cavity of the supporting upright post, a sharp rivet is welded at the bottom end of the threaded rod, and a hand wheel is connected with the top end of the threaded rod in a threaded manner.
Description
Technical Field
The invention relates to the technical field of water conservancy construction, in particular to an assembled water retaining device for water conservancy engineering construction.
Background
Hydraulic engineering is the engineering of building in order to eliminate the water damage and utilize the water resource with the development, hydraulic engineering can control rivers, when preventing the flood calamity, satisfy people's demand to the water resource, watertight fittings often need be built at the both ends of one section river course, take out the water in the river course again, thereby conveniently build hydraulic engineering, but the manger plate method troublesome poeration that current hydraulic engineering used, work efficiency is low, after breakwater installation when watertight fittings, because the effect of rivers, the breakwater can be strikeed always to the rivers, and current breakwater installation is unstable again, lead to the breakwater to break away from the position easily, the manger plate effect is poor, for this reason, we propose an equipment type's hydraulic engineering construction watertight fittings.
Disclosure of Invention
The invention aims to provide an assembled water retaining device for hydraulic engineering construction, which aims to solve the problem of poor stability of the water retaining device in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hydraulic engineering construction water retaining device of equipment type, includes supporting seat and breakwater, the supporting seat is located subaerial, and one side fixedly connected with support post of supporting seat, the support post cross-section is circularly, and is adjacent swing joint has the breakwater between the support post, the lower skin weld of breakwater has triangle-shaped plug, and is adjacent the inside wall of support post just is located the fixedly connected with back timber directly over the breakwater, the vertical threaded rod of pegging graft of support post inner chamber, the bottom welding of threaded rod has sharp rivet, the top threaded connection of threaded rod has the hand wheel.
Preferably, the top of the supporting upright post is sleeved with a sleeve, two sides of the annular surface of the sleeve are movably connected with telescopic supporting rods, the bottom ends of the telescopic supporting rods are inclined planes, and the bottom end surfaces of the telescopic supporting rods are tightly attached to the ground.
Preferably, the sleeve includes left ring and right ring, the division port both sides fixedly connected with installation piece one of left ring, the open end both sides fixedly connected with and the installation piece assorted installation piece two of right ring, installation piece one and two inner chambers of installation piece prolong the horizontal direction and are equipped with the screw hole, screw hole and bolt phase-match.
Preferably, the anchor eye has been seted up to the anchor eye both sides of left side ring and right ring, swing joint has telescopic strut in the anchor eye, the inner circle of left side ring and right ring has anti-skidding packing ring through the viscose bonding, the outer wall of support post is closely laminated to the medial surface of anti-skidding packing ring.
Preferably, an installation cavity is formed in one side, close to the water baffle, of the side wall of the supporting stand column, the water baffle is movably connected in the installation cavity, through holes are formed in the water baffle and the installation cavity in the same vertical direction, the through holes are matched with the fastening bolts, and the fastening bolts penetrate through the side wall of the supporting stand column.
Preferably, an inner protective layer is arranged on the front side of the inner cavity of the water baffle, a first shock pad is arranged on the inner side of the inner protective layer, a second shock pad is arranged on the rear side of the inner cavity of the water baffle, and a plurality of groups of shock absorbing springs are arranged between the first shock pad and the second shock pad.
Preferably, the supporting seat is U style of calligraphy, and the open end is down, the inner cavity of the supporting seat intermediate position is equipped with the baffle that prolongs vertical direction setting, the left side of baffle is equipped with first cavity, fixedly connected with supporting shoe in the first cavity, the embedded anti-skidding line that is equipped with crisscross distribution of lower surface of supporting shoe.
Preferably, a second cavity is formed in the right side of the partition plate, an adjusting bolt is vertically inserted into the second cavity, the adjusting bolt penetrates through the top end of the supporting seat, the bottom end of the adjusting bolt is movably connected with the moving plate through a bearing, the moving plate is connected with a sliding rail in a sliding mode, the sliding rail is located on the right side of the partition plate and on the right side wall of the supporting seat, a trapezoidal supporting block is fixedly connected to the bottom end of the moving plate, and a damping pad is bonded to the bottom end face of the trapezoidal supporting block through an adhesive.
Compared with the prior art, the invention has the beneficial effects that:
1. the water baffle plate is more stable in operation, can prevent the water baffle plate from deviating from the position under the impact of water flow, and has good stability and good water baffle effect.
2. The first shock pad, the second shock pad and the damping spring in the inner cavity of the water baffle provide damping buffering force for the water baffle, and when water flow impacts the water baffle, the water baffle has reaction force, so that the water retaining effect of the water baffle is improved.
3. The supporting shoe laminating ground of supporting seat bottom, when ground position unevenness, the height of the trapezoidal supporting shoe of rotatable adjusting bolt regulation opposite side makes supporting shoe and trapezoidal supporting shoe keep the horizontal direction setting, has both guaranteed that the supporting seat is in horizontal position, has improved the stability of breakwater installation, has indirectly improved the manger plate effect of breakwater.
4. The rotatable threaded rod of the hand wheel rotates, the pointed rivet at the bottom end of the threaded rod is inserted into the water retaining river channel, the installation of the supporting stand column is reinforced, the triangular plug at the bottom end of the water retaining plate can facilitate the water retaining plate to be inserted into the water retaining river channel, and the installation method is simple and stable in connection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of the sleeve structure of the present invention;
FIG. 4 is a schematic view of the connection between the water guard plate and the support pillar according to the present invention;
FIG. 5 is a schematic view of the internal structure of the water guard plate of the present invention;
FIG. 6 is a schematic view of the internal structure of the support base according to the present invention.
In the figure: 1. a supporting seat; 2. supporting the upright post; 3. a hand wheel; 4. a top beam; 5. a threaded rod; 6. a sharp rivet; 7. a water baffle; 8. a triangular plug; 9. a sleeve; 900. a bolt; 901. a first mounting block; 902. a second mounting block; 904. a left ring; 905. a right ring; 906. a hinge hole; 907. an anti-slip washer; 10. a telescopic strut; 11. fastening a bolt; 12. a mounting cavity; 13. a through hole; 14. an inner protective layer; 15. a first cushion pad; 16. a second cushion pad; 17. a damping spring; 18. a support block; 19. a partition plate; 20. a slide rail; 21. adjusting the bolt; 22. moving the plate; 23. trapezoidal supporting shoe.
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.
Referring to fig. 1-6, the present invention provides a technical solution:
referring to fig. 1 and 2, an assembled water retaining device for hydraulic engineering construction comprises a supporting seat 1 and a water retaining plate 7, wherein the supporting seat 1 is positioned on the ground, one side of the supporting seat 1 is fixedly connected with a supporting upright post 2, the cross section of the supporting upright post 2 is circular, the water retaining plate 7 is movably connected between the adjacent supporting upright posts 2, a triangular plug 8 is welded on the lower surface of the water retaining plate 7, a top beam 4 is fixedly connected on the inner side wall of the adjacent supporting upright post 2 and positioned right above the water retaining plate 7, a threaded rod 5 is vertically inserted into an inner cavity of the supporting upright post 2, a pointed rivet 6 is welded at the bottom end of the threaded rod 5, a hand wheel 3 is connected at the top end of the threaded rod 5, the water retaining plate 7 is made of a waterproof material, when the water retaining plate 7 is installed, firstly, the water retaining plate 7 and the top beam 4 are installed on, supporting seat 1 parallel is placed subaerial, rotates hand wheel 3 again, and hand wheel 3 drives threaded rod 5 and rotates, adjusts its height after threaded rod 5 rotates, makes the pointed rivet 6 of threaded rod 5 bottom peg graft in the bottom in manger plate river course, and wherein, the triangle-shaped plug 8 of manger plate 7 bottom also pegs graft in the bottom in river course, has both accomplished the installation to manger plate 7, connects stably and convenient operation is simple.
Referring to fig. 2, a sleeve 9 is sleeved on the top end of the support column 2, telescopic support rods 10 are movably connected to two sides of the ring surface of the sleeve 9, the bottom ends of the telescopic support rods 10 are inclined planes, the bottom end surfaces of the telescopic support rods 10 are tightly attached to the ground, after the water baffle 7 is installed, the sleeve 9 is sleeved on the top end of the support column 2, the telescopic support rods 10 on the two sides are pulled out, the bottom ends of the inclined planes of the telescopic support rods 10 are attached to the ground, and a stable triangular structure is formed between the telescopic support rods 10 and the support column 2 and between the telescopic support rods 10 and the ground, so that the installation of.
Referring to fig. 3, the sleeve 9 includes a left ring 904 and a right ring 905, a first mounting block 901 is fixedly connected to two sides of an opening end of the left ring 904, a second mounting block 902 matched with the first mounting block 901 is fixedly connected to two sides of an opening end of the right ring 905, threaded holes are formed in inner cavities of the first mounting block 901 and the second mounting block 902 along a horizontal direction, the threaded holes are matched with the bolts 900, when the sleeve 9 is mounted, the left ring 904 and the right ring 905 are moved from opposite directions to be attached to a top end side wall of the support column 2, so that the first mounting block 901 and the threaded holes in the second mounting block 902 are attached to each other, at this time, the bolts 900 are rotated, and the bolts 900 reinforce the mounting of the left ring 904 and the right ring 905, and are.
Referring to fig. 2 and 3, hinge holes 906 are formed in two sides of the annular surface of the left ring 904 and the right ring 905, telescopic support rods 10 are movably connected in the hinge holes 906, anti-slip gaskets 907 are bonded on the inner rings of the left ring 904 and the right ring 905 through viscose glue, the inner side surfaces of the anti-slip gaskets 907 are tightly attached to the outer wall of the support column 2, the hinge holes 906 are arranged and can be used for withdrawing the telescopic support rods 10, space is not occupied, the anti-slip gaskets 907 can increase the contact area and friction force between the sleeve 9 and the support column 2, the sleeved sleeve 9 can be prevented from sliding off the support column 2, and connection is stable.
Please refer to fig. 1 and 4, the mounting cavity 12 has been seted up to the lateral wall of support post 2 and the one side that is close to breakwater 7, swing joint has breakwater 7 in the mounting cavity 12, it is equipped with through-hole 13 to extend same vertical direction in breakwater 7 and the mounting cavity 12, through-hole 13 and fastening bolt 11 phase-match, fastening bolt 11 runs through the lateral wall of support post 2, when installation breakwater 7, place the both sides wall of breakwater 7 in mounting cavity 12, through-hole 13 in mounting cavity 12 and the breakwater 7 is same vertical direction and can rotates fastening bolt 11, fastening bolt 11 has both consolidated the connection of breakwater 7, both breakwaters 7 are the assembled type, after the use is accomplished, detachable breakwater 7 carries and transports it.
Referring to fig. 5, an inner protection layer 14 is disposed on the front side of an inner cavity of the water baffle 7, a first shock absorption pad 15 is disposed on the inner side of the inner protection layer 14, a second shock absorption pad 16 is disposed on the rear side of the inner cavity of the water baffle 7, a plurality of groups of shock absorption springs 17 are disposed between the first shock absorption pad 15 and the second shock absorption pad 16, the inner protection layer 14 has an impact resistance function, the first shock absorption pad 15, the second shock absorption pad 16 and the shock absorption springs 17 can provide a shock absorption buffer force for the water baffle 7, when water impacts the water baffle 7, an acting force in the opposite direction of the water baffle 7 can be provided, the water baffle 7 can be prevented from being impacted by the impact force of the water flow to be deviated, and the water blocking.
Referring to fig. 1 and 6, the supporting seat 1 is U-shaped, the open end of the supporting seat is downward, a partition plate 19 extending in the vertical direction is arranged in the middle of an inner cavity of the supporting seat 1, a first cavity is arranged on the left side of the partition plate 19, a supporting block 18 is fixedly connected in the first cavity, and anti-skid grains distributed in a staggered manner are embedded in the lower surface of the supporting block 18.
Referring to fig. 6, a second cavity is formed in the right side of the partition plate 19, an adjusting bolt 21 is vertically inserted into the second cavity, the adjusting bolt 21 penetrates through the top end of the supporting seat 1, the bottom end of the adjusting bolt 21 is movably connected with a movable plate 22 through a bearing, the movable plate 22 is slidably connected with a slide rail 20, the slide rail 20 is located on the right side of the partition plate 19 and the right side wall of the supporting seat 1, the bottom end of the movable plate 22 is fixedly connected with a trapezoidal support block 23, a damping pad is bonded on the bottom end face of the trapezoidal support block 23 through an adhesive, when the ground is uneven, the support block 18 first contacts the ground, then the adjusting bolt 21 on one side is rotated, the adjusting bolt 21 drives the movable plate 22 to slide in the inner cavity of the slide rail 20 to change the height, the trapezoidal support block 23 at the bottom end, the water retaining effect of the water retaining plate 7 is indirectly improved.
The working principle is as follows: when the invention is used, firstly, two side walls of the water baffle 7 are placed in the installation cavity 12, when the installation cavity 12 and the through hole 13 in the water baffle 7 are in the same vertical direction, the fastening bolt 11 can be rotated, the fastening bolt 11 not only reinforces the connection of the water baffle 7, but also places the supporting block 18 at the bottom end of the supporting seat 1 on the ground, when the position of the supporting seat 1 is uneven, the adjusting bolt 21 at one side is rotated, the adjusting bolt 21 drives the moving plate 22 to slide in the inner cavity of the slide rail 20 to change the height, the trapezoidal supporting block 23 at the bottom end is driven to move until the trapezoidal supporting block 23 and the supporting block 18 are in the same horizontal position, the supporting upright column 2 is placed in the water-retaining riverway, then the hand wheel 3 is rotated, the hand wheel 3 drives the threaded rod 5 to rotate, the threaded rod 5 is rotated to adjust the height, so that the pointed rivet, wherein, the triangle-shaped plug 8 of breakwater 7 bottom also pegs graft in the bottom in river course, both accomplished the installation to breakwater 7, remove the laminating from relative direction with left ring 904 and right ring 905 at the top lateral wall of support post 2, make the screw hole laminating in installation piece 901 and the installation piece two 902, at this moment, rotate bolt 900, bolt 900 has both consolidated the installation of left ring 904 and right ring 905, pull out the telescopic strut 10 in the hinge hole 906 of left ring 904 and right ring 905 both sides, and peg graft subaerial with telescopic strut 10's bottom, telescopic strut 10 and support post 2, formed stable triangle-shaped structure between the ground, the installation of support post 2 has been consolidated, the installation is simple and the simple operation, the manger plate effect of breakwater 7 has been improved.
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 hydraulic engineering construction water retaining device of equipment type, includes supporting seat (1) and breakwater (7), its characterized in that: the supporting seat is characterized in that the supporting seat (1) is located on the ground, one side of the supporting seat (1) is fixedly connected with a supporting upright post (2), the cross section of the supporting upright post (2) is circular and adjacent, a water baffle (7) is movably connected between the supporting upright posts (2), a triangular plug (8) is welded on the lower surface of the water baffle (7) and adjacent, a top fixedly connected with top beam (4) is arranged on the inner side wall of the supporting upright post (2) and located over the water baffle (7), a threaded rod (5) is vertically inserted into an inner cavity of the supporting upright post (2), a pointed rivet (6) is welded at the bottom end of the threaded rod (5), and a hand wheel (3) is connected to.
2. The assembled hydraulic engineering construction water retaining device of claim 1, wherein: the top of support post (2) has cup jointed sleeve (9), the anchor ring both sides swing joint of sleeve (9) has telescopic strut (10), the bottom of telescopic strut (10) is the inclined plane, and the bottom face of telescopic strut (10) closely laminates ground.
3. The assembled hydraulic engineering construction water retaining device of claim 2, wherein: the sleeve (9) comprises a left ring (904) and a right ring (905), wherein a first mounting block (901) is fixedly connected to two sides of an opening end of the left ring (904), a second mounting block (902) matched with the first mounting block (901) is fixedly connected to two sides of an opening end of the right ring (905), threaded holes are formed in inner cavities of the first mounting block (901) and the second mounting block (902) in the horizontal direction in an extending mode, and the threaded holes are matched with bolts (900).
4. The assembled hydraulic engineering construction water retaining device of claim 3, wherein: hinge hole (906) have been seted up to the anchor ring both sides of left side ring (904) and right ring (905), swing joint has telescopic support rod (10) in hinge hole (906), the inner circle of left side ring (904) and right ring (905) has anti-skidding packing ring (907) through the viscose bonding, the medial surface of anti-skidding packing ring (907) closely laminates the outer wall of support post (2).
5. The assembled hydraulic engineering construction water retaining device of claim 1, wherein: the side wall of the supporting column (2) and the side close to the water baffle (7) are provided with an installation cavity (12), the water baffle (7) is movably connected in the installation cavity (12), a through hole (13) is formed in the water baffle (7) and the installation cavity (12) in the same vertical direction, the through hole (13) is matched with the fastening bolt (11), and the fastening bolt (11) penetrates through the side wall of the supporting column (2).
6. The assembled hydraulic engineering construction water retaining device of claim 1, wherein: the inner chamber front side of breakwater (7) is equipped with interior inoxidizing coating (14), the inboard of interior inoxidizing coating (14) is equipped with first shock pad (15), the inner chamber rear side of breakwater (7) is equipped with second shock pad (16), be equipped with a plurality of groups damping spring (17) between first shock pad (15) and second shock pad (16).
7. The assembled hydraulic engineering construction water retaining device of claim 1, wherein: supporting seat (1) is the U style of calligraphy, and the open end down, supporting seat (1) inner chamber intermediate position is equipped with baffle (19) that prolong vertical direction setting, the left side of baffle (19) is equipped with first cavity, fixedly connected with supporting shoe (18) in the first cavity, the embedded non-slip texture that is equipped with crisscross distribution of lower surface of supporting shoe (18).
8. The assembled hydraulic engineering construction water retaining device of claim 7, wherein: the second cavity has been seted up on the right side of baffle (19), vertical grafting has adjusting bolt (21) in the second cavity, adjusting bolt (21) run through the top of supporting seat (1), and bearing swing joint movable plate (22) are passed through to the bottom of adjusting bolt (21), movable plate (22) sliding connection slide rail (20), slide rail (20) are located the right side of baffle (19) and the right side wall of supporting seat (1), the bottom fixedly connected with trapezoidal supporting shoe (23) of movable plate (22), the bottom face of trapezoidal supporting shoe (23) bonds through the viscose has the damping pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334244.3A CN113047218A (en) | 2021-03-29 | 2021-03-29 | Hydraulic engineering construction water retaining device of equipment type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334244.3A CN113047218A (en) | 2021-03-29 | 2021-03-29 | Hydraulic engineering construction water retaining device of equipment type |
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| Publication Number | Publication Date |
|---|---|
| CN113047218A true CN113047218A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110334244.3A Pending CN113047218A (en) | 2021-03-29 | 2021-03-29 | Hydraulic engineering construction water retaining device of equipment type |
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| CN (1) | CN113047218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467285A (en) * | 2022-09-17 | 2022-12-13 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Channel-oriented river channel comprehensive ecological revetment structure in densely populated area |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569538A (en) * | 2016-02-01 | 2016-05-11 | 高瞻 | Jacking-descending type flood-prevention water retaining door with double-water-baffle structure |
| CN206581231U (en) * | 2017-03-09 | 2017-10-24 | 闫飞 | A kind of backwater gate of construction of hydro project |
| CN206874199U (en) * | 2017-07-06 | 2018-01-12 | 高瞻 | A kind of hand inserts formula water blocking door |
| CN111335254A (en) * | 2020-03-10 | 2020-06-26 | 张洪亮 | Hydraulic engineering construction water retaining device of equipment type |
| CN211369813U (en) * | 2019-12-13 | 2020-08-28 | 华伟电力建设有限公司 | Electric power changes protection frame |
-
2021
- 2021-03-29 CN CN202110334244.3A patent/CN113047218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569538A (en) * | 2016-02-01 | 2016-05-11 | 高瞻 | Jacking-descending type flood-prevention water retaining door with double-water-baffle structure |
| CN206581231U (en) * | 2017-03-09 | 2017-10-24 | 闫飞 | A kind of backwater gate of construction of hydro project |
| CN206874199U (en) * | 2017-07-06 | 2018-01-12 | 高瞻 | A kind of hand inserts formula water blocking door |
| CN211369813U (en) * | 2019-12-13 | 2020-08-28 | 华伟电力建设有限公司 | Electric power changes protection frame |
| CN111335254A (en) * | 2020-03-10 | 2020-06-26 | 张洪亮 | Hydraulic engineering construction water retaining device of equipment type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467285A (en) * | 2022-09-17 | 2022-12-13 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Channel-oriented river channel comprehensive ecological revetment structure in densely populated area |
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Application publication date: 20210629 |
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