CN108824380A - A kind of energy-dissipating structure and its adjusting method of adjustable stilling pond end sill height - Google Patents
A kind of energy-dissipating structure and its adjusting method of adjustable stilling pond end sill height Download PDFInfo
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- 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
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Abstract
The present invention relates to the energy-dissipating structures and its adjusting method of a kind of adjustable stilling pond end sill height, the present invention includes Stepped Spillway, WES ogee section and stilling pond, three is sequentially connected, the tail end of stilling pond is provided with stilling pond end sill, stilling pond end sill bottom is provided with hydraulic jacking device, and the height of stilling pond end sill is adjusted by hydraulic jacking device.The present invention passes through the optimization to stilling pond end sill integral part; the height of different stilling pond end sills can be taken in different flow; the disorder degree of stability and flow-shape to force reduction pool bottom entirety can all have different degrees of buffer function; the stabilization of stabilization and two sides bank slope for protection stilling pond bottom is advantageous, and the energy dissipation rate under flows at different levels has different degrees of raising.
Description
Technical field
The present invention relates to the energy-dissipating structures and its adjusting method of a kind of adjustable stilling pond end sill height, belong to water conservancy and hydropower
Hydraulic structure flood-discharge energy-dissipating field in engineering.
Background technique
In the design of dam work, flood discharge and energy dissipating are the two main tasks that discharge structure undertakes, i.e. safety leads extra flood off
While strict control under sluice stream dam body and Excavation of Downstream Foundation Pit are washed away, prevent dam body destroy and dam foundation unstability.Particularly with
High water head, big flow Flood-relief project, there is bottom plate underflow speed and fluctuation pressure are larger, erosion protection difficulty is big, and required
Stilling pond size is big, high cost problem, therefore always exists limitation to the research and engineer application of this energy dissipation type.
On the basis of traditional energy dissipater, introduces Stepped Spillway and carry out energy dissipating, in conjunction with flaring gate pier and stilling pond, shape
The advantages of energy-dissipating installation integrally changed, this energy dissipation type has flaring pier energy dissipation and Stepped Spillway energy dissipating concurrently, it was both utilized
Stepped Spillway further enhances the energy dissipation rate of flaring gate pier, but utilize after flaring gate pier without pool from overflow bottom to ladder
Dam facing is ventilated to avoid cavitation and cavitation erosion, so that stepped spillway be made to develop to high water head large discharge per unit direction.
In recent years, some large hydropower station engineerings that China is built, all there are two prominent features：First is that high water head, big
The discharge structure of discharge per unit width, cajon；Second is that the discharge structure of big flow, deep tail water, low Froude number water flow.For
The two features protruded, the pioneering New Type Energy Dissipator-flaring gate pier combined energy dissipation in China, flaring gate pier and various traditional energy dissipating sides
Why the conjunctive use of formula can promote effect of energy dissipation, substantially all be inside a series of water flows formed with weir crest constricted jet
The variation of structure and hydraulic characteristic(s) is inseparable.The collision that crosses of shock wave evokes one splashing water flow and aeration, to dissipate
Sub-fraction water flow dynamic energy；But the most of constricted jet overflow let out under dam facing, since ternary overflow two sides are the scope of freedom,
Under let out during two sides by huge lateral pressure.When water flow comes downstream ogee section, by the effect of centrifugal force, overflow is rapid
Become flat to two sides smoothization, and spread to two sides, when Adjacent openings overflow meets collision two-by-two in ogee section, is evoked huge
Water hat.
When being used in combination with energy dissipation by hydraulic jump, collision and blending between the stock that mutually borders on the river occur in water cushion, except the water that crosses
The collision blending of capital stock body generates momentum-exchange outside energy dissipating, and also and the water body of water cushion carries out strong turbulent fluctuation diffusion and blending,
Water flow largely consumes kinetic energy by the strong turbulent fluctuation shear action of itself, is converted into thermal energy and potential energy, in terms of fluidised form, originally
Horizontal tail pier type stilling pond binary hydraulic jump or undular jump, become ternary hydraulic jump, its energy dissipation rate greatly enhances, so wide
The basic principle of the conjunctive use of tail pier and underflow, energy dissipating is：In addition to the weir crest shock wave aeration that crosses consumes a part of kinetic energy
Outside, blending is collided to two sides smoothization and in water cushion in ogee section due to mutually bordering on the river stock by a large amount of kinetic energy system, thus in stilling pond
Interior formation ternary hydraulic jump, greatly reinforces the turbulent fluctuation shear action of water flow itself.
In terms of technical standpoint, since underflow stilling basin is to carry out energy dissipating by large scale hydraulic jump, flow turbulence is strong, energy
Dissipation is concentrated mainly on stilling pond first half area, and force reduction pool bottom load often compares concentration in the region, and underflow speed is high,
Preresearch estimates, when water levels of upstream and downstream difference is higher than 60m, stilling pond maximum underflow speed can reach 30m/s or more.In high water head
Under the conditions of big flow, it is easy to make since the hydraulic indexes such as underflow speed and Pressure Fluctuation are higher using underflow stilling basin scheme
At the unstable failure of force reduction pool bottom plate.Its chief destructive pattern is：（1）The cavitation that high-velocity flow can directly induce bottom plate is empty
Erosion destroys；（2）There is cavitation destruction to the abrasion development of stilling pond afterwards to a certain extent in high-velocity & sediment-laden flow；（3）Pulsation
Load causes between plate after the destruction of sealing, because the transmitting of high-velocity flow flowing pressure causes plate unstable failure；（4）Strong
Fluctuating load directly contributes plate unstable failure in moment.Above-mentioned four kinds of failure modes at home and abroad occur in built engineering
It crosses, although the research of survey, research and analysis on the spot shows that the Slope protection of above-mentioned engineering is different, all faces bottom water with stilling pond
Mechanical index is excessively high direct relation.As it can be seen that using energy dissipation by hydraulic jump mode under the conditions of high head and large flow, still have biggish
Technical risk.
Summary of the invention
Not for stilling pond water flow stationary in the design of current hydraulic structure Energy dissipation of flood discharging and stilling pond energy dissipating efficiency
The problems such as high and force reduction pool bottom stability, the present invention provides a kind of energy-dissipating structures of adjustable stilling pond end sill height
And its adjusting method.
The technical scheme is that：A kind of energy-dissipating structure of adjustable stilling pond end sill height, including Stepped Spillway,
WES ogee section and stilling pond, three are sequentially connected, and the tail end of stilling pond is provided with stilling pond end sill, it is characterised in that：It is described to disappear
Power pond end sill bottom is provided with hydraulic jacking device, different flow when in face of aerial drainage, disappears by the way that hydraulic jacking device is adjustable
The height of power pond end sill, and then reach the optimal operation state of engineering.
Wherein stilling pond end sill is WES type end sill, including ogee section, straightway and curved section, stilling pond end sill bottom are set
It is equipped with certain thickness pedestal；Wherein hydraulic jacking device includes Main Hydraulic Pump, main hydraulic cylinder, main hydraulic control valve, Hydraulic Main
Pipeline, secondary hydraulic cylinder, secondary jacking post, secondary hydraulic control valve and hydraulic secondary duct, the main hydraulic cylinder is interior equipped with hydraulic pump, described
Main hydraulic cylinder is connected by hydraulic main pipeline with hydraulic secondary duct, and hydraulic secondary duct is then connected to secondary hydraulic cylinder, the pair liquid
Secondary jacking post is equipped in cylinder pressure；Secondary hydraulic cylinder is provided with multiple, is evenly spaced in hydraulic secondary duct, sets on each pair hydraulic cylinder
Set corresponding secondary hydraulic control valve；Wherein secondary hydraulic cylinder and secondary jacking post are fixed on the bottom of stilling pond end sill, Main Hydraulic Pump, master
Hydraulic cylinder, main hydraulic valve and secondary hydraulic valve are all installed concentratedly in the computer room of riverbank side.
Sluice stream is crossed according to weir crest when aerial drainage by different flow, adjusts the lifting of hydraulic jacking device to stilling pond tail
The height H of bank is adjusted, and detailed process is as follows：
When needing to increase stilling pond end sill height H, the volume V of main hydraulic cylinder can be made to reduce by Main Hydraulic Pump, and
The fluid flow Q in hydraulic main pipeline is controlled by adjusting the aperture of main hydraulic valve, so that the stilling pond end sill rate of climb is not
As for too fast, when reducing because of main hydraulic cylinder volume V causes the volume v of secondary hydraulic cylinder to increase, secondary jacking post is forced to move upwards,
Stilling pond end sill height H is caused to increase, when stilling pond end sill height H rises in the range of necessary requirement, by adjusting pair
The aperture of hydraulic valve makes its reach desired height more accurately；When stilling pond end sill height H is excessive, need to reduce its height
H is spent, then can make the volume V of main hydraulic cylinder to increase by Main Hydraulic Pump, and is controlled by adjusting the aperture of main hydraulic valve
The fluid flow Q in hydraulic main pipeline is made, so that stilling pond end sill decrease speed is unlikely to too fast, as the volume v of secondary hydraulic cylinder
When main hydraulic cylinder volume V, which increases, to be reduced, under gravity, secondary jacking post can be moved downward, and cause stilling pond end sill
Height H reduces, and when stilling pond end sill height H drops in the range of necessary requirement, comes by adjusting the aperture of secondary hydraulic valve
Its is set to reach desired height H more accurately, by the different height H of H, to adapt to the practical fortune of the engineering under various flows
Battalion.
The working principle of the invention：When passing through different flow, by high to stilling pond end sill figure and stilling pond end sill
On the one hand adjustment of both degree can increase lower sluicings stream rotary roll and degree of collision in stilling pond and flow to sluice under improving
Energy dissipating efficiency in stilling pond；On the other hand, because the height H for changing stilling pond end sill can change cushion pool in stilling pond
Depth weakens the impact kinetic energy that the lower stream that sluices is injected in stilling pond, can protect the overall stability of force reduction pool bottom, may make
The energy dissipation rate of flows at different levels, which has, significantly to be promoted.
The beneficial effects of the invention are as follows：
（1）Increase lower rotary roll, blending and the degree of collision of the stream in stilling pond that sluice, so can be promoted stilling pond for
The energy dissipation rate of the lower stream that sluices；
（2）The depth of cushion pool in stilling pond is increased, offsets power bottom of pond so as to weaken from the lower sluicing stream that flaring gate pier projects
Impact force caused by plate；
（3）The atomizating phenomenon generated when improving aerial drainage, and keep the water flow for obtaining pond more steady, for downstream river course two sides
Overall stability it is advantageous.
Detailed description of the invention
Fig. 1 is 1 schematic diagram of stereochemical structure embodiment of the present invention；
Fig. 2 is 2 schematic diagram of stereochemical structure embodiment of the present invention；
Fig. 3 is the schematic perspective view of novel stilling pond end sill in the present invention；
Fig. 4 is the hydraulic jacking device structural schematic diagram of embodiment 1 in the present invention；
Fig. 5 is the hydraulic jacking device structural schematic diagram of embodiment 2 in the present invention；
In figure respectively marked as：1-Stepped Spillway, 2-WES ogee sections, 3-stilling ponds, 4-stilling pond end sills, the anti-arc of 4-1-
Section, 4-2-straightway, 4-3-curved section, 4-4-pedestal, 5-hydraulic jacking devices, 5-1-Main Hydraulic Pump, the main liquid of 5-2-
The main hydraulic control valve of cylinder pressure, 5-3-, the hydraulic main pipeline of 5-4-, 5-5-pair hydraulic cylinder, 5-6-pair jacking post, 5-7-pair liquid
The hydraulic secondary duct of pressure control valve, 5-8-.
Specific embodiment
With reference to the accompanying drawings and examples, the invention will be further described, but the contents of the present invention be not limited to it is described
Range.
As shown in Figs. 1-2, a kind of energy-dissipating structure of adjustable stilling pond end sill height, including Stepped Spillway 1, WES are anti-
Segmental arc 2 and stilling pond 3, three is sequentially connected, and the tail end of stilling pond 3 is provided with stilling pond end sill 4, it is characterised in that：It is described to disappear
End sill 4 bottom in power pond is provided with hydraulic jacking device 5, different flow when in face of aerial drainage, adjustable by hydraulic jacking device 5
The height of stilling pond end sill 4, and then reach the optimal operation state of engineering.
As shown in figure 3, wherein stilling pond end sill 4 is WES type end sill, including ogee section 4-1, straightway 4-2 and curved section
4-3,4 bottom of stilling pond end sill are provided with certain thickness pedestal 4-4, can carry out the adjustment of 4 height of stilling pond end sill in this way,
The structure of stilling pond end sill 4 is more in line with the rule that water flow flows in river dynamics, has to a certain degree for letting out under water flow
Benefit, lower fluctuating level of the stream in stilling pond that sluice can be cut down to a certain extent, for maintaining river two after stilling pond
The stabilization of bank is advantageous.
As illustrated in figures 4-5, wherein hydraulic jacking device 5 includes Main Hydraulic Pump 5-1, main hydraulic cylinder 5-2, main hydraulic control valve
5-3, hydraulic main pipeline 5-4, secondary hydraulic cylinder 5-5, secondary jacking post 5-6, pair hydraulic control valve 5-7 and hydraulic secondary duct 5-8, it is described
Hydraulic pump 5-1 is equipped in main hydraulic cylinder 5-2, the main hydraulic cylinder 5-2 passes through hydraulic main pipeline 5-4 and hydraulic secondary duct 5-8 phase
Connect, and hydraulic secondary duct 5-8 is then connected to secondary hydraulic cylinder 5-5, and secondary jacking post 5-6 is equipped in the pair hydraulic cylinder 5-5；It is wherein secondary
The bottom that hydraulic cylinder 5-5 and pair jacking post 5-6 is fixed on stilling pond end sill 4 passes through as shown in the dotted box portion in Fig. 4-5
Extend in corresponding hydraulic main pipeline 5-4 and hydraulic secondary duct 5-8 to the computer room of riverbank side that Main Hydraulic Pump 5-1, master is hydraulic
Cylinder 5-2, main hydraulic valve 5-3 and pair hydraulic valve 5-7 are installed concentratedly in the computer room of riverbank side, wherein pair hydraulic cylinder 5-5 is arranged
Have multiple, be evenly spaced on hydraulic secondary duct 5-8, corresponding secondary hydraulic control valve 5-7 is set on each pair hydraulic cylinder 5-5.
In addition to this, there are also other corresponding some corresponding ancillary equipments, including sensor, remote sensing equipment, the secondary liquid of adjusting
The equipment such as the equipment of pressure control valve aperture, other circuit-lines and device are both mounted in the computer room of riverbank side.For sluicing
Building carry out aerial drainage when pass through different flow cross sluice stream, it may be convenient to adjust the height H of stilling pond end sill 4 in the hope of
The flood-discharge energy-dissipating operation of progress reservoir can optimally be gone.
It on the one hand can increase lower sluicing stream by changing the height H of stilling pond end sill 4 using this energy-dissipating structure disappearing
Rotary roll and the degree of collision improve lower energy dissipating efficiency of the stream in stilling pond that sluices in power pond；On the other hand, because change disappears power
The depth that the height H of pond end sill 4 can change cushion pool in stilling pond weakens the impact kinetic energy that the lower stream that sluices is injected in stilling pond,
The overall stability of force reduction pool bottom can be protected.
Embodiment 1：As shown in figs. 1 and 4, when weir crest discharge per unit width is 180m3It is single wide in/sm even more small range
When flow, hydraulic jacking device 5 is not adjusted, and overall operation is highly carried out with the original of stilling pond end sill 4.Under this situation, so that
Whole flow-shape stability in stilling pond 3 improves, and can reduce the hydrostatic pressing of force reduction pool bottom to a certain extent
By force, advantageous for the stability of force reduction pool bottom, it may make the whole hydraulic characteristic(s) in stilling pond to be optimal, including energy dissipating
The hydraulic characteristic(s)s such as rate, water level fluctuation situation, the stilling pond depth of water, stilling pond underflow speed and force reduction pool bottom time-average pressure exist
In controllable range, and water flow in stilling pond can be allowed more smoothly to flow to downstream；Body relative to general stilling pond end sill
The case where when type and height cannot change, by this kind of method, energy dissipation rate can be improved 9.7% to 14.2%.
Embodiment 2：As shown in figures 2 and 5, when the discharge per unit width that weir crest crosses sluice stream is 180m3/ sm and higher list
It when wide flow, needs to carry out a degree of energy dissipating in stilling pond, stilling pond tail can be changed by hydraulic jacking device 5
The height H of bank 4.Desired height H is different under different flow, and first, it, can be with when needing to increase the height H of stilling pond end sill 4
By Main Hydraulic Pump 5-1 the volume V of main hydraulic cylinder 5-2 is reduced, and is controlled by adjusting the aperture of main hydraulic valve 5-3
Fluid flow Q in hydraulic main pipeline 5-4, so that 4 rate of climb of stilling pond end sill is unlikely to too fast, when because of main hydraulic cylinder 5-2
When volume V reduces the volume v increase for causing secondary hydraulic cylinder 5-5, forces secondary jacking post 5-6 to move upwards, cause stilling pond end sill 4
Height H increases, and when 4 height H of end sill rises in the range of necessary requirement, makes by adjusting the aperture of secondary hydraulic valve 5-7
Its reaches desired height more accurately；Second, when 4 height H of stilling pond end sill is excessive, need to reduce its height H, then it can be with
By Main Hydraulic Pump 5-1 the volume V of main hydraulic cylinder 5-2 is increased, and is controlled by adjusting the aperture of main hydraulic valve 5-3
Fluid flow Q in main pipeline 5-4, so that 4 decrease speed of stilling pond end sill is unlikely to too fast, as the volume v of secondary hydraulic cylinder 5-5
When main hydraulic cylinder 5-2 volume V, which increases, to be reduced, under gravity, secondary jacking post 5-6 can be moved downward, and cause the power that disappears
End sill 4 height H in pond reduces, when 4 height of stilling pond end sill drops in the range of necessary requirement, by adjusting secondary hydraulic valve 5-
7 aperture makes its reach desired height H more accurately.Carry out the height H change of different stilling pond end sills 4 adjusted
Also different, but generally can all increase the degree of the lower movements such as rotary roll, collision and blending of the stream in stilling pond that sluice, to subtract
The kinetic energy of weep, achievees the purpose that energy dissipating；And lower sluicing is made to flow rotary roll, blending in stilling pond and collide more abundant,
It is advantageous for the energy dissipating of the lower stream that sluices to reduce the kinetic energy of water flow；Water cushion in stilling pond can be increased by increasing by 4 height H of end sill
The depth on the pool can have buffer function to lower sluicing stream, be conducive to the stabilization of force reduction pool bottom, and integrated energy dissipater is whole more
Meet Practical Project service condition；The case where when figure and height relative to general stilling pond end sill cannot change, by this
Kind method, energy dissipation rate can be improved 10.8% to 16.4%.
It should be noted that the application method of this combined energy dissipation structure be carried out according to concrete engineering actual conditions using
, here only it is merely the elaboration for having carried out a part, is unable to the overview whole circumstances.It is whole for stilling pond end sill 4 in the structure
The not certain restriction of the adjustment mode of body, under different engineerings and different operating conditions, the adjustment of stilling pond end sill 4 none
Fixed scheme can only be adjusted in a certain range according under all kinds of project situations.In addition, in the structure
The variation of the hydraulic characteristic(s)s such as state of whole water flow is also extremely complex in stilling pond, only simply elaborates part work here
Water flow overall condition under condition cannot represent the situation under all engineerings and corresponding different operating conditions, but can be in stilling pond
The interior number for increasing rotary roll, blending and collision, can be correspondingly improved energy dissipating efficiency of the water flow in stilling pond, and can weaken
Percussion of the incident water flow to force reduction pool bottom.
Above in conjunction with attached drawing, the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (5)
1. a kind of energy-dissipating structure of adjustable stilling pond end sill height, including Stepped Spillway（1）, WES ogee section（2）With the power that disappears
Pond（3）, three is sequentially connected, stilling pond（3）Tail end be provided with stilling pond end sill（4）, it is characterised in that：The stilling pond tail
Bank（4）Bottom is provided with hydraulic jacking device（5）, pass through hydraulic jacking device（5）Adjustable stilling pond end sill（4）Height；
The hydraulic jacking device（5）Including Main Hydraulic Pump（5-1）, main hydraulic cylinder（5-2）, main hydraulic control valve（5-3）, it is hydraulic
Main pipeline（5-4）, secondary hydraulic cylinder（5-5）, secondary jacking post（5-6）, secondary hydraulic control valve（5-7）With hydraulic secondary duct（5-8）, institute
State main hydraulic cylinder（5-2）It is interior to be equipped with hydraulic pump（5-1）, the main hydraulic cylinder（5-2）Pass through hydraulic main pipeline（5-4）With hydraulic pair
Pipeline（5-8）It is connected, and hydraulic secondary duct（5-8）Then with secondary hydraulic cylinder（5-5）Connection, the pair hydraulic cylinder（5-5）Inside it is equipped with
Secondary jacking post（5-6）.
2. the energy-dissipating structure of adjustable stilling pond end sill height according to claim 1, it is characterised in that：The stilling pond
End sill（4）For WES type end sill, including ogee section（4-1）, straightway（4-2）And curved section（4-3）, stilling pond end sill（4）Bottom
It is provided with certain thickness pedestal（4-4）.
3. the energy-dissipating structure of adjustable stilling pond end sill height according to claim 1, it is characterised in that：The pair is hydraulic
Cylinder（5-5）It is provided with multiple, is evenly spaced in hydraulic secondary duct（5-8）On, each pair hydraulic cylinder（5-5）It is upper that corresponding pair is set
Hydraulic control valve（5-7）.
4. the energy-dissipating structure of adjustable stilling pond end sill height according to claim 1, it is characterised in that：The pair is hydraulic
Cylinder（5-5）With secondary jacking post（5-6）It is fixed on stilling pond end sill（4）Bottom, Main Hydraulic Pump（5-1）, main hydraulic cylinder（5-2）,
Main hydraulic valve（5-3）With secondary hydraulic valve（5-7）It all installs concentratedly in the computer room of riverbank side.
5. a kind of method that stilling pond end sill height is adjusted using energy-dissipating structure as described in claim 1, feature
It is：Sluice stream is crossed according to weir crest when aerial drainage by different flow, adjusts hydraulic jacking device（5）Lifting to stilling pond tail
Bank（4）Height H be adjusted, detailed process is as follows：
Increase stilling pond end sill（4）Height H：Push Main Hydraulic Pump（5-1）So that main hydraulic cylinder（5-2）Volume V reduce,
Adjust main hydraulic valve（5-3）Aperture control main pipeline（5-4）Interior fluid flow Q, and then control stilling pond end sill（4）'s
The rate of climb, main hydraulic cylinder（5-2）Volume V reduction causes secondary hydraulic cylinder（5-5）Volume v increase, force secondary jacking post（5-6）
It moves upwards, stilling pond end sill（4）Height H increase, when stilling pond end sill（4）Height H rise in required range, adjust
Secondary hydraulic valve（5-7）Aperture to stilling pond end sill（4）Height H fine tuning, so that its is reached desired height more accurately；
Reduce stilling pond end sill（4）Height H：Promote Main Hydraulic Pump（5-1）So that main hydraulic cylinder（5-2）Volume V increase,
Adjust main hydraulic valve（5-3）Aperture control main pipeline（5-4）Interior fluid flow Q, and then control stilling pond end sill（4）'s
Decrease speed, main hydraulic cylinder（5-2）Volume V increase causes secondary hydraulic cylinder（5-5）Volume v reduce, secondary jacking post（5-6）Downwards
Movement, stilling pond end sill（4）Height H reduce, when stilling pond end sill（4）Height H drop in required range, adjust secondary liquid
Pressure valve（5-7）Aperture to stilling pond end sill（4）Height H fine tuning, so that its is reached desired height more accurately.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577271A (en) * | 2018-11-28 | 2019-04-05 | 扬州大学 | A kind of lifting bottom sill certainly of regulation water flow |
| CN113237631A (en) * | 2021-05-08 | 2021-08-10 | 中国水利水电科学研究院 | Urban accumulated water monitoring oscillation eliminating structure based on underflow energy dissipation and energy dissipation method thereof |
| CN114457773A (en) * | 2022-01-21 | 2022-05-10 | 西南石油大学 | Novel jacket platform suitable for offshore oil and gas exploitation |
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| CN109577271A (en) * | 2018-11-28 | 2019-04-05 | 扬州大学 | A kind of lifting bottom sill certainly of regulation water flow |
| CN113237631A (en) * | 2021-05-08 | 2021-08-10 | 中国水利水电科学研究院 | Urban accumulated water monitoring oscillation eliminating structure based on underflow energy dissipation and energy dissipation method thereof |
| CN114457773A (en) * | 2022-01-21 | 2022-05-10 | 西南石油大学 | Novel jacket platform suitable for offshore oil and gas exploitation |
| CN114457773B (en) * | 2022-01-21 | 2023-11-14 | 西南石油大学 | Novel jacket platform suitable for offshore oil and gas exploitation |
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