CN113737747B - Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave - Google Patents
Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave Download PDFInfo
- Publication number
- CN113737747B CN113737747B CN202111113048.XA CN202111113048A CN113737747B CN 113737747 B CN113737747 B CN 113737747B CN 202111113048 A CN202111113048 A CN 202111113048A CN 113737747 B CN113737747 B CN 113737747B
- Authority
- CN
- China
- Prior art keywords
- dam
- wave
- trapezoid
- slope
- trapezoidal
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Revetment (AREA)
Abstract
The invention discloses a wave dissipation structure for an upstream protection slope of an earth and rock dam of a reservoir, belonging to the technical field of protection slopes of earth and rock dams, and comprising a plurality of trapezoidal wave dissipation piers, wherein the trapezoidal wave dissipation piers are uniformly arranged at certain intervals downwards along the direction of a dam slope from a wave wall; the trapezoidal wave dissipation pier consists of a straight quadrangular prism with a right-angled trapezoid bottom surface; the side edges of the straight quadrangular prisms are parallel to the dam axis, and the length of the side edges is consistent with the dam length; the bottom surface of the straight quadrangular prism is vertical to the dam surface; the waist line of the right trapezoid is basically kept horizontal and is in a gradient of about 2 percent; the upper bottom of the right trapezoid is parallel to the slope line of the dam; the lower bottom of right trapezoid and the coincidence of dam slope line, trapezoidal unrestrained mound that disappears and concrete bank protection integral erection, the inside of gravel stone bed course is provided with the drain pipe, and structural integrity, stability are better, and long service life can make the unrestrained anti-spattering of unrestrained, can effectively disappear and kill wave kinetic energy, reduce the wave and climb, can tentatively estimate general trapezoidal unrestrained mound bank protection wave of disappearing and climb, provide the reference for relevant engineering implementation.
Description
Technical Field
The invention relates to the technical field of earth and rockfill dam protection, in particular to an upstream protection slope wave dissipation structure of a reservoir earth and rockfill dam.
Background
In the engineering design of reservoir earth-rock dams, the wave climbing height is the most important parameter for determining the elevation of the dam crest, and the engineering safety and investment are directly influenced. The method adopts a certain technical means to reduce the wave climbing height, and has wider application prospect in the reservoir dam construction: on one hand, the reduction of the wave climbing height can enable related technicians to reduce the elevation of the dam crest in the design stage and reduce the project investment budget; on the other hand, when the old dangerous reservoir is safely rechecked according to the existing standard, certain wave dissipation measures are taken on the upstream surface of the dam, so that the problem of insufficient height of the dam can be effectively solved, and the safe reserve of the reservoir is increased.
The main factors influencing the wave climbing height include the slope of the dam slope, the wave height, the wavelength, the wave direction of incident waves, the roughness of the slope surface and the like. In the field of sea wall engineering, the wave run-up is generally reduced by roughening the facing, for example: throwing and filling square hollow blocks, twisting blocks, arranging fence plates and the like. However, the wave dissipation measures are huge in size, complex to manufacture and install and large in investment, and are not beneficial to popularization in reservoir earth-rock dam engineering.
The conventional inclined plane bank protection form is adopted usually to reservoir earth and rockfill dam engineering at present, mainly has: the invention designs a wave dissipation structure for the upstream slope protection of the earth and rock dam of the reservoir based on the characteristics that the design and the construction method related to the form of the slope protection are mature, but the roughness of the slope surface is small and the wave dissipation effect is not obvious.
Disclosure of Invention
The invention aims to provide a wave-dissipating structure for upstream revetment of earth and rockfill dam of reservoir, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the upstream slope protection wave dissipation structure of the reservoir earth-rock dam comprises a plurality of trapezoidal wave dissipation piers, wherein the trapezoidal wave dissipation piers are uniformly arranged at certain intervals downwards along the direction of a dam slope from a wave protection wall; the trapezoidal wave dissipation pier consists of a straight quadrangular prism with a right-angled trapezoid bottom surface; the side edges of the straight quadrangular prisms are parallel to the dam axis, and the length of the side edges is consistent with the dam length; the bottom surface of the straight quadrangular prism is vertical to the dam face; the waist line of the right trapezoid is basically kept horizontal and is in a gradient of about 2%; the upper bottom of the right trapezoid is parallel to a dam slope line; the lower bottom of the right trapezoid is superposed with a dam slope line, and the trapezoid wave dissipation pier and the concrete slope are integrally cast and are connected with a concrete slab through a steel bar; plain concrete cushion layers and sand gravel cushion layers are sequentially laid under the reinforced concrete slope protection, the slope gradient of the dam facing surface of the dam is 1:m, and a drain pipe is arranged inside the gravel cushion layers.
Preferably, the lowest point of the range of the trapezoidal wave dissipation mop is preferably not higher than the height of the double waves below the designed water level and not lower than the average water level in winter; the lengths of the right-angle side and the upper bottom of the right-angle trapezoid are 0.2-0.4 m, and the lengths of the lower bottom and the waist line of the right-angle trapezoid can be calculated according to the following formula:
b'＝a'+mh' (1)
in the formula, a 'is the length of the upper bottom of the right trapezoid, b' is the length of the lower bottom of the right trapezoid, h 'is the length of the right-angle side of the right trapezoid, t' is the length of the waist line of the right trapezoid, and m is the slope coefficient of the upstream dam slope of the dam.
Preferably, the wave climbing height of the slope protection of the trapezoidal wave dissipation pier under the common stormy wave condition of the reservoir engineering is calculated by using a FLUENT numerical platform. The numerical model adopts a two-dimensional unsteady implicit solver, an RNG k-epsilon turbulence model, a VOF two-phase flow model and a pressure-velocity coupled PIOS algorithm, and the control equation comprises a continuity equation, a momentum equation, a fluid volume transport equation and the like, and has the following forms:
in the formula: u and v are the fluid velocities in the x and y directions, respectively; p is the fluid pressure; ρ is the fluid density; μ is the hydrodynamic viscosity coefficient; a is q Is a volume fraction, i.e. if a q And =1 indicates that the q-th phase occupies the entire grid cell.
According to the design Specification of Rolling Earth-rockfill dam (SL 274-2020), the wave run-up R is calculated as follows:
in the formula: h is the incident wave height; l is the wavelength of the incident wave; k Δ The coefficient of penetration is rough; k W Defining the comprehensive permeability coefficient K for empirical coefficient s ＝K Δ ·K W 。
Calculating comprehensive rough permeability coefficient (shown in table 1) under common stormy wave conditions of the reservoir according to the numerical simulation result, and calculating K s Substituting into the formula (6), the wave climbing height of the slope protection of the trapezoidal wave-dissipating pier can be preliminarily estimated, and reference is provided for implementation of related engineering.
TABLE 1 trapezoidal wave-dissipating pier slope protection wave run-up and comprehensive permeability coefficient
Preferably, the construction of the trapezoidal wave-dissipating pier revetment comprises the following steps:
s1: and paving a sand gravel cushion layer on the surface of the upstream rockfill area of the dam, tamping the slope surface, filling joints and leveling.
S2: and laying a plain concrete cushion layer on the sand gravel cushion layer, and pre-burying a drain pipe.
S3: the reinforced concrete slope protection and the trapezoidal wave dissipation pier are integrally cast through the vertical die, wherein angle steel is embedded at the right angle of the upstream face of the trapezoidal wave dissipation pier, and the angle steel is connected with a reinforced concrete slab through a tie bar to form an integral structure. Structural seams are adopted along the water flow direction, and polyethylene closed-cell foam boards are filled between the seams; and (5) cutting along the axis direction of the dam by using a cutting machine.
S4: and after pouring is finished, inserting a vibrator to vibrate, and naturally curing by sprinkling water, wherein the curing time is not less than 7 days until the design requirement is met.
Compared with the prior art, the invention has the beneficial effects that:
the trapezoidal wave dissipation pier and the concrete slope protection are cast in a combined mode, the structural integrity and the stability are good, and the service life is long;
the trapezoidal wave dissipation pier increases the roughness of the protective surface, so that the spray can be splashed reversely, the kinetic energy of the waves can be effectively dissipated and killed, and the climbing height of the waves is reduced;
the trapezoidal wave dissipation pier waist line is basically kept horizontal, and the slope can be about 2% as appropriate, so that on one hand, convenient traffic is provided for later overhaul, monitoring and the like of the dam, and on the other hand, water accumulation can be reduced.
The trapezoidal wave dissipation pier has the advantages of simple and attractive structural form, simple and feasible construction procedure and better applicability to projects such as design and modification of the upper slope protection of the reservoir earth-rock dam.
According to the numerical model calculation result and the comprehensive permeability coefficient calculation, the wave climbing height of the slope protection of the common trapezoidal wave-dissipating piers can be preliminarily estimated, and reference is provided for implementation of related engineering.
Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic longitudinal section of a slope protection of a trapezoidal wave-dissipating pier of the invention;
FIG. 2 is a schematic diagram of a three-dimensional structure of a trapezoidal wave-dissipating pier of the present invention;
fig. 3 is a schematic three-dimensional arrangement diagram of the trapezoidal wave-breaking pier revetment.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a wave wall; 2. a drain pipe; 3. a trapezoidal wave-dissipating pier; 4. a plain concrete cushion; 5. reinforced concrete slope protection; 6. a gravel stone cushion layer.
a. The upper bottom of the right trapezoid; b. the lower bottom of the right trapezoid; h. the right-angle sides of the right-angle trapezoid; t, a waist line of the right trapezoid; d. the side edges of the straight quadrangular prism.
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.
A certain hydropower station is located in high-latitude areas of China, is cold and long in winter, and has an average temperature of 3.8 ℃ over many years and an extremely low temperature of-38.4 ℃ over the years. The upstream slope protection mode that this power station main dam preliminary design stage was criticized is stone masonry bank protection. But in the technical construction stage, the stone preparation is insufficient, and the outward transportation of the rock blocks can greatly increase the revetment investment; on the other hand, the engineering area is cold and long in winter, the stone protection slope can not resist the tensile stress generated by the stone protection slope when bearing ice load and deforming, and then cracking easily occurs, and the concrete protection slope has better effect in resisting the ice load because the concrete protection slope is internally provided with reinforcing steel bars. Therefore, the upstream protection slope of the main dam of the hydropower station is changed into a reinforced concrete protection slope form. Considering that the excavation of the engineering dam foundation is finished and the section of the dam body is shaped, if the traditional reinforced concrete slope protection form is adopted, the original dam crest elevation does not meet the requirement necessarily. Therefore, the trapezoidal wave dissipation pier structure is adopted to increase the roughness of the protective surface and reduce the wave climbing height so as to maintain the original dam body section and the dam crest elevation unchanged.
The slope coefficient m of the upstream face dam slope of the main dam of the hydropower station is 2.1, and the reservoir area wave conditions are as follows: h =1.1m, l =28m. Look-up table 1, the comprehensive coefficient of permeability K can be preliminarily estimated s The wave climbing height R is about 0.65, the wave climbing height R is calculated by substituting the formula (6) into the formula (6) to be 1.55m, compared with an inclined concrete protection slope and a masonry protection slope, the wave climbing height attenuation can respectively reach more than 33% and 18%, and therefore the section of the original dam body and the elevation of the dam top can be kept unchanged.
The single trapezoid wave dissipation pier is in a structural form of a straight quadrangular prism with a right-angled trapezoid bottom surface, and is shown in figure 2. The lower bottom b of the right trapezoid is superposed with the dam face; the right-angle side h of the right-angle trapezoid is perpendicular to the dam face; the waist line t of the right trapezoid keeps 2% gradient with the horizontal direction; and the side edge d of the straight quadrangular prism is parallel to the dam axis and is consistent with the dam length of the main dam.
The construction process of the trapezoidal wave dissipation pier slope protection is as follows: as shown in fig. 1, a plurality of trapezoidal wave dissipation piers 3 are uniformly arranged downwards from the wave wall 1 along the slope direction at certain intervals, the trapezoidal wave dissipation piers 3 and the concrete slope protection 5 are integrally cast, and reinforcing steel bars are configured to be connected with concrete slabs. And a plain concrete cushion layer 4 and a sand gravel cushion layer 6 are sequentially paved under the reinforced concrete slope protection 5.
A three-dimensional schematic diagram of the trapezoidal wave-dissipating piers uniformly arranged along the dam face from top to bottom at certain intervals is shown in figure 3.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The upstream slope protection wave dissipation structure of the reservoir earth-rock dam is characterized by comprising trapezoid wave dissipation piers (3) and wave walls (1), wherein a plurality of the trapezoid wave dissipation piers (3) are uniformly arranged at certain intervals downwards from the wave walls (1) along the direction of a dam slope; the trapezoidal wave dissipation pier (3) consists of a straight quadrangular prism with a right-angled trapezoid bottom surface; the side edges of the straight quadrangular prisms are parallel to the dam axis, and the length of the side edges is consistent with the dam length; the bottom surface of the straight quadrangular prism is vertical to the dam face; the waist line of the right trapezoid is basically kept horizontal and is in a gradient of about 2%; the upper bottom of the right trapezoid is parallel to a dam slope line; the lower bottom of the right trapezoid coincides with a dam slope line, and the trapezoid wave dissipation pier (3) and the reinforced concrete slope protection(5) Integrally pouring, and connecting with a concrete slab through a steel bar; plain concrete bed course (4) and sand gravel bed course (6) are laid in proper order under reinforced concrete bank protection (5), and the dam upstream face dam slope is 1:ma drain pipe (2) is arranged inside the sand gravel cushion (6);
the lowest point of the arrangement range of the trapezoidal wave dissipation piers (3) is not higher than the height of two-time waves below the designed water level and is not lower than the average water level in winter; the lengths of the right-angle side and the upper bottom of the right-angle trapezoid are 0.2m to 0.4m, and the lengths of the lower bottom and the waist line of the right-angle trapezoid are calculated according to the following formula:
in the formula (I), the compound is shown in the specification,
is the length of the upper bottom of the right trapezoid,
the length of the lower bottom of the right-angled trapezoid,
the length of the right-angle side of the right-angle trapezoid is,
is the length of the waist line of the right trapezoid,mthe slope coefficient of the upstream face of the dam is the slope coefficient of the dam slope.
2. The upstream slope protection wave-breaking structure of the earth and rockfill dam of the reservoir according to claim 1, wherein: the trapezoid wave dissipation pier (3) is in the shape of a straight quadrangular prism with a right trapezoid bottom surface, a is the upper bottom of the right trapezoid, b is the lower bottom of the right trapezoid, h is the right-angle side of the right trapezoid, t is the waist line of the right trapezoid, and d is the side edge of the straight quadrangular prism.
3. The upstream slope protection wave-breaking structure of the earth and rockfill dam of the reservoir according to claim 1, wherein: the comprehensive rough permeability coefficient of the reservoir under the common storm condition is calculated by using the FLUENT numerical platform, the wave climbing height of the slope protection of the trapezoidal wave dissipation pier can be preliminarily estimated, and reference is provided for implementation of relevant engineering.
4. The upstream slope protection wave-breaking structure of the reservoir earth-rock dam according to claim 1, characterized in that the construction of the slope protection of the trapezoid wave-breaking pier (3) comprises the following steps;
s1: paving a sand gravel cushion layer (6) on the surface of the upstream rockfill area of the dam, tamping the slope surface, and filling and leveling;
s2: laying a plain concrete cushion (4) on the sand gravel cushion (6), and pre-burying the drain pipe (2);
s3: the reinforced concrete slope protection (5) and the trapezoidal wave-dissipating pier (3) are integrally cast in a vertical mode, wherein angle steel is embedded at the right angle of the upstream surface of the trapezoidal wave-dissipating pier (3), the angle steel is connected with a reinforced concrete slab through a lacing wire to form an integral structure, structural seams are adopted along the water flow direction, and polyethylene closed-cell foam boards are filled between the seams; cutting a seam along the axis direction of the dam by using a cutting and sewing machine;
s4: after pouring is finished, a vibrator is inserted for vibrating and natural curing by sprinkling water, and the curing time is not less than 7 days until the design requirement is met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113048.XA CN113737747B (en) | 2021-09-18 | 2021-09-18 | Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113048.XA CN113737747B (en) | 2021-09-18 | 2021-09-18 | Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113737747A CN113737747A (en) | 2021-12-03 |
| CN113737747B true CN113737747B (en) | 2023-01-31 |
Family
ID=78740478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111113048.XA Active CN113737747B (en) | 2021-09-18 | 2021-09-18 | Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113737747B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561914B (en) * | 2022-03-04 | 2024-01-19 | 中国电建集团西北勘测设计研究院有限公司 | Drainage structure for bedding layer area of concrete face rockfill dam in cold area |
| CN114561913B (en) * | 2022-03-04 | 2024-01-19 | 中国电建集团西北勘测设计研究院有限公司 | Drainage partition structure of concrete panel rock-fill dam |
| CN115045233B (en) * | 2022-07-20 | 2023-04-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Anti-ice pushing and scouring dam slope protection and construction method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204982814U (en) * | 2015-08-06 | 2016-01-20 | 茂县天龙湖电力有限公司 | Power that disappears structure in low water head dam low reaches riverbed |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0306547D0 (en) * | 2003-03-21 | 2003-04-23 | Engineering Business Ltd | Apparatus for creating a local reduction in wave height |
| CN101831892B (en) * | 2010-04-08 | 2011-07-20 | 重庆交通大学 | Hydropower station bank slope energy dissipation structure |
| CN109944215B (en) * | 2019-04-09 | 2024-01-05 | 长江勘测规划设计研究有限责任公司 | Wave-eliminating slope protection structure for earth-rock dam reinforcement engineering |
-
2021
- 2021-09-18 CN CN202111113048.XA patent/CN113737747B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204982814U (en) * | 2015-08-06 | 2016-01-20 | 茂县天龙湖电力有限公司 | Power that disappears structure in low water head dam low reaches riverbed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113737747A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113737747B (en) | Reservoir earth and rockfill dam upper reaches bank protection structure of breaking wave | |
| CN109778829B (en) | Composite foundation combining deep soft soil rigid and flexible piles and lattice walls | |
| CN104514216B (en) | A kind of canal on embankment frost heaving resistant leakage preventing structure and construction method | |
| CN102877420A (en) | Construction method of large tube well fixed point precipitation, sealing bottom free concrete and steel sheet pile cofferdam deepwater bearing platform | |
| CN203373705U (en) | Ecological slope protection | |
| CN109653049B (en) | Construction method for processing bridge head filling road section on soft foundation | |
| CN104846781A (en) | Ecological interlocking block and ecological interlocking block type slope protection construction method | |
| CN108385627A (en) | Power station diversion tunnel plugging construction method based on karst landform | |
| CN111705752A (en) | Clay core wall dam with seepage-proofing and self-healing functions and implementation method thereof | |
| CN108842523A (en) | In-strong expansive rock or expansive soils ballastless track of high-speed railway foundation stabilization construction and construction method | |
| CN104652371A (en) | Overflow cemented rock-fill dam established based on old dam and construction method thereof | |
| CN213417904U (en) | Closed basement floor subsides post-cast strip structure in advance | |
| CN109944215B (en) | Wave-eliminating slope protection structure for earth-rock dam reinforcement engineering | |
| CN202440766U (en) | Water-drainage open cut tunnel aqueduct of road cut section | |
| CN209722993U (en) | A kind of embankment side slope framework parts La Tuoding anchor slab supporting construction a little | |
| CN102561551A (en) | Thick wall and construction method thereof | |
| CN105951676A (en) | Interlocked wave-resistance protection slope precast block system and construction method | |
| CN217870559U (en) | Inclined wall geomembrane earth-rock cofferdam structure suitable for higher manger plate flood peak of geomembrane | |
| CN208293317U (en) | A kind of Plateau Permafrost Areas high-speed railway cutting water blocking discharge structure | |
| CN111364466B (en) | Construction method of dry dock bottom plate | |
| CN106930234A (en) | A kind of High-cold regions earth and rockfill dam protective slope structure and its construction method | |
| CN209989781U (en) | Novel structure of silty-fine sand stratum flood control dam | |
| CN210031683U (en) | Earth and rockfill dam reinforcement engineering wave dissipation slope protection structure | |
| CN212956576U (en) | Confined space high fill roadbed side slope foam concrete's reinforced structure | |
| CN103924616B (en) | The pre-buried shearing groove of ultra-deep underground continuous wall makes, construction method of installation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |