CN102966081A - Biological environment-friendly expansion-drop combination energy dissipater - Google Patents

Biological environment-friendly expansion-drop combination energy dissipater Download PDF

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Publication number
CN102966081A
CN102966081A CN2012104544265A CN201210454426A CN102966081A CN 102966081 A CN102966081 A CN 102966081A CN 2012104544265 A CN2012104544265 A CN 2012104544265A CN 201210454426 A CN201210454426 A CN 201210454426A CN 102966081 A CN102966081 A CN 102966081A
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bank
dredging flow
flow groove
groove
absorption basin
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CN102966081B (en
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戴会超
郑铁刚
柳海涛
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China Three Gorges Corp
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China Three Gorges Corp
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Abstract

The invention belongs to a flood discharge energy dissipation facility, and discloses a biological environment-friendly expansion-drop combination energy dissipater. The energy dissipater comprises a plurality of upstream flood discharge slots, flood discharge partition walls arranged among the upstream flood discharge slots, a flow picking structure arranged at the tail ends of the upstream flood discharge slots, a stilling basin arranged at the downstream of the flow picking structure, and a stilling basin tail weir and a downstream apron arranged at the downstream of the stilling basin, wherein the upstream flood discharging slots consist of a plurality of high-weir flood discharge slots and a plurality of low-weir flood discharge slots; and the high-weir flood discharge slots and the low-weir flood discharge slots are arranged in parallel from top to bottom. According to energy dissipater provided by the invention, the problem that the bottom plate of multi-strand flood discharge downstream stilling basin is suffered from the threat of vertical vortex under large flow; and moreover, under the promise that the energy dissipation efficiency of the bottom flow energy dissipater is improved, the gas super-saturation is reduced, and the influence to the downstream biological environment is reduced.

Description

The combination energy dissipater is expanded in falling of eco-friendly type
Technical field
The invention belongs to the flood-discharge energy-dissipating facility, particularly a kind of falling of eco-friendly type that is applicable to large hydraulic engineering expanded the combination energy dissipater.
Background technology
Environmental protection has become society to the basic demand of Hydraulic and Hydro-Power Engineering exploitation, and development environment close friend's planning and designing and operational management etc. are the inexorable trends of following water conservancy scientific technology development.Flood-discharge energy-dissipating is one of important component part of Water Conservancy Works.In Hydraulic and Hydro-Power Engineering flood discharge and the generating sluicing process, strong turbulent fluctuation and aeration effect occur in lower sluicing stream, so that the content of downstream river course dissolved gas obviously increases, the dissolved gas supersaturation occur under the certain condition.Studies show that when the dissolved gas degree of supersaturation acquired a certain degree (such as 110%), fish just may suffer from bubble illness and death.Therefore, to reduce the dissolved gas supersaturation degree as target, the flood-discharge energy-dissipating mode of taking into account energy dissipating efficient is following goal in research.For the high dam flood-discharge energy-dissipating, flip trajectory bucket is comparatively widely a kind of Energy Dissipation Modes of present domestic and international application.In the flip trajectory bucket process, current and air and the friction of water cushion pool downstream generation intense impact, be accompanied by the strong exchange of water air interface, cause that dissolved gas content significantly increases in the water body of downstream, and the atomizating phenomenon that produces is very serious, can produce precipitation area and the large-scale fog district that scope is little, intensity is large in some areas, downstream, power station normal operation, downstream bank stability, two sides traffic etc. are caused have a strong impact on [Pan Ruiwen, Comments on Trajectory Bucket Type Energy Dissipator for A High Dam, the Yunnan hydroelectric generation, 1998,14(3): 15-19].The tradition disspation through hydraudic jimp utilizes hydraulic jump to carry out energy dissipating, and water surface forms huge rotary roll in the absorption basin, and under the effect of turbulent fluctuation blending, being involved in large quantity of air becomes dissolved gas, and along with the current migration has influence on the farther scope in downstream.For this reason, developed country has carried out many research, points out to reduce lower sluicing and flows to into the water cushion pool downstream pool degree of depth, can reduce to a certain extent the dissolved gas supersaturation degree.
Development from flood-discharge energy-dissipating, for many years model testing and engineering practice show, lower sluicing stream is dispersed into multiply or multilayer overflow, make it to inject as far as possible equably cushion pool or absorption basin, to improve the flood-discharge energy-dissipating rate, reduce to impact dynamic pressure at the bottom of the pool or the pond and save the effective way [Lin Bingnan of cushion pool or absorption basin construction investment, the development of China's high-velocity flow energy-dissipating tech, Journal of Hydraulic Engineering, 1985(5): 23-26; Dai Guangqing, multiple jets cushion pool ternary flow numerical simulation and energy dissipating, Chinese science, 1995,25(9): 1002-1008].A kind of multiply height bank absorption basin is disclosed in the Chinese patent application of publication number CN101215828A, and by adopting the contraction mode to make downstream m flow state stable; Improve on multiply height bank absorption basin scheme basis in the file of Chinese patent application publication number CN101624818A, proposed a kind of multiply differential column-splitting inlet energy dissipater.For this multi-lever and multi-strand disspation through hydraudic jimp scheme, under the prerequisite that guarantees energy dissipation rate, alleviated to a certain extent absorption basin and faced end index; Yet test shows that this Energy Dissipation Modes downstream water surface produces huge rotary roll, the same problem that dissolved gas supersaturation occurs that exists; Simultaneously owing between two bursts of main flows enough spaces are arranged, main flow certainly will have the possibility of vertical shaft vortex arising under the sudden expansion effect, Deng Jun, Yang Zhong are superfine also to have confirmed this point [Deng Jun by test or numerical computations, experimental study and numerical simulation to family's dam cushion pool, hydroelectric generation, 2004,30 (11): 12-15; Yang Zhongchao, Numerical simulation of 3-D flow field of multi-horizontal submerged jets into plunge pool, hydroelectric generation journal, 2004,23 (5): 69-73.], strong vertical shaft whirlpool will cause serious threat to downstream absorption basin base plate under large flow.Trajectory bucket type energy in a kind of absorption basin is disclosed in the Chinese patent application of publication number CN101538841A, although changed traditional underflow energy dissipation by hydraulic jump mode, yet absorption basin base plate vicinity hydraulic indexes is higher, under the effects such as impact of main flow, has certain destructive power to choosing the bank facility in the pond, behind the bank and the destructions such as cavitation corrosion that cause easily absorption basin.
In sum, the present flood-discharge energy-dissipating mode of document or patent disclosure mainly take energy dissipating efficient as target, and has been ignored impact on downstream ecology, environment, and the extensive Fish kills that causes owing to the dam earial drainage all once occured external and China's part reservoir.Existing main Energy Dissipation Modes has then increased the dissolved gas supersaturation degree as to improve energy dissipating efficient as starting point; Otherwise, if to reduce the dissolved gas supersaturation degree as starting point, then will affect energy dissipating efficient, therefore to carry out the flood discharge mode of taking into account energy dissipating efficient and ecological environment and study and have certain economic benefit and social benefit, this is just starting point of the present invention and meaning also.
The information that is disclosed in background parts of the present invention only is intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or hint that in any form this information structure is for the known prior art of persons skilled in the art.
Summary of the invention
The object of the invention is to solve the contradiction of energy dissipating efficient and ecological environment, for the defective that exists in the prior art, propose a kind of expansion formula of falling that is applicable to the eco-friendly type of large hydraulic engineering and made up the energy dissipater, the flip trajectory bucket theory is applied to the disspation through hydraudic jimp worker, not only having solved under the large flow multiply earial drainage downstream absorption basin base plate is subjected to the vertical shaft whirlpool to threaten problem, and under the prerequisite that improves disspation through hydraudic jimp worker energy dissipating efficient, reduce the dissolved gas supersaturation degree, reduced the impact on the downstream ecology environment; Simultaneously can shorten absorption basin length, thereby save construction costs.
According to an aspect of the present invention, the combination energy dissipater is expanded in falling of a kind of eco-friendly type, can comprise: a plurality of upstreams dredging flow groove; Be arranged on and let out the groove partition wall between the dredging flow groove of described a plurality of upstreams; Be arranged on described upstream dredging flow groove the end choose flow structure; Be arranged on the described absorption basin of choosing the downstream part of flow structure; With absorption basin tail bank and the downstream apron of the downstream part that is arranged on described absorption basin, wherein said upstream dredging flow groove is comprised of a plurality of high bank dredging flow grooves and a plurality of low bank dredging flow groove, and this high bank dredging flow groove and low bank dredging flow groove are arranged in parallel up and down.
According to another aspect of the present invention, the combination energy dissipater is expanded in falling of a kind of eco-friendly type, can comprise: the upstream dredging flow groove; Be arranged on described upstream dredging flow groove the end choose flow structure; Be arranged on the described absorption basin of choosing the downstream part of flow structure; Absorption basin tail bank and downstream apron with the downstream part that is arranged on described absorption basin, wherein said upstream dredging flow groove is comprised of a high bank dredging flow groove and a plurality of low bank dredging flow groove that separates with each other, this high bank dredging flow groove and described a plurality of low bank dredging flow groove are arranged in parallel up and down, and described a plurality of low bank dredging flow grooves are spaced apart by letting out the groove partition wall.
Preferably, described low bank dredging flow groove presses multiply to go out stream for having, and describedly chooses the bank of carrying water that flow structure is solid type, the carrying water bank and described low smooth-going joining of bank dredging flow groove of this solid type, and the base plate of the bottom surface of the bank of carrying water and described absorption basin coincides.
Preferably, described low bank dredging flow groove presses multiply to go out stream for having, and describedly chooses the bank of carrying water that flow structure is tooth grid type, the carrying water bank and described low smooth-going joining of bank dredging flow groove of this tooth grid type, and the base plate of the bottom surface of the bank of carrying water and described absorption basin coincides.
Preferably, the level that described high bank dredging flow groove is the with no pressure multiply goes out stream, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the top of described high bank dredging flow groove.
Preferably, described high bank dredging flow groove is the stream that tilts of with no pressure, and the earial drainage outlet of this high bank dredging flow groove comprises the corner sections of bowing, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the top of described high bank dredging flow groove.
Preferably, the level that described high bank dredging flow groove is with no pressure goes out stream, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the bottom of described high bank dredging flow groove.
Preferably, described high bank dredging flow groove is the stream that tilts of with no pressure, and the earial drainage outlet of this high bank dredging flow groove comprises the corner sections of bowing, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the bottom of described high bank dredging flow groove.
Preferably, be provided with 10 ° ~ 30 ° subsides pin behind the bank of choosing flow structure of described low bank dredging flow groove from its top.
The present invention has following beneficial effect:
1, with respect to existing flood-discharging energy dissipater, the expansion formula combination energy dissipater that falls of eco-friendly type of the present invention has changed the outlet scheme, carry out energy dissipating by the collision effect in the absorption basin water body between the main flow, improve energy dissipating efficient, can be widely used in different flow, multi-form earial drainage.
2, the expansion formula of falling of eco-friendly type of the present invention makes up the energy dissipater, has reduced downstream water surface rotary roll, can reduce the gas downstream degree of supersaturation, fluid stable, and range of atomized flow is less, can effectively improve the downstream ecology environment.
3, eco-friendly type of the present invention falls expansion formula combination energy dissipater, changed traditional disspation through hydraudic jimp mode, reduce to a certain extent absorption basin and faced end hydraulic indexes, can be used as main energy dissipater uses in the outlet structure escape works of high water head, large discharge per unit width, and meet the energy dissipating requirement, for the outlet structure escape works of high water head, large discharge per unit width have proposed a kind of novel energy-dissipating installation.
The main flow of 4, letting out down is divided into multiply and enters the pond, and the partition wall afterbody is provided with streamlined pier tail, and the vertical shaft whirlpool that can avoid dispersion of flow to produce destroys.
5, eco-friendly type of the present invention falls expansion formula combination energy dissipater, can effectively solve under the bank that proposes among the China Patent Publication No. CN101624818A alluvial problems such as silt.
Method and apparatus of the present invention has other characteristic and advantage, these characteristics and advantage will be apparent from the accompanying drawing that is incorporated herein and the specific embodiment subsequently, to state in detail in the accompanying drawing that is incorporated herein and the specific embodiment subsequently that perhaps these the drawings and specific embodiments are used for explaining certain principles of the present invention jointly.
Description of drawings
Fig. 1 is the sectional drawing according to the first example of high bank dredging flow groove of the present invention, wherein to be that the with no pressure multiply goes out streamed for high bank dredging flow groove, the outlet of its earial drainage comprises level and establishes the two kinds of forms in the angle of depression, and the upper surface of letting out the pier tail of groove partition wall flushes with the top of high bank dredging flow groove;
Fig. 2 is the sectional drawing according to the first example of low bank dredging flow groove of the present invention, and wherein low bank dredging flow groove is streamed for there being the multiply of pressure to go out, and its earial drainage exports and comprises solid type and the tooth grid type bank of carrying water; The pier tail upper surface of letting out the groove partition wall flushes with the top of high bank dredging flow groove;
Fig. 3 is the second example cross-section figure according to high bank dredging flow groove of the present invention, and it is streamed that this high bank dredging flow groove is that with no pressure goes out continuously, and the earial drainage outlet comprises level and establishes the two kinds of forms in the angle of depression; The upper surface of letting out the pier tail of groove partition wall flushes with the bottom of high bank dredging flow groove;
Fig. 4 is the sectional drawing according to the second example of low bank dredging flow groove of the present invention, and to press multiply to go out streamed in order to have for this low bank dredging flow groove, and the earial drainage outlet comprises solid type and the tooth grid type bank of carrying water; The pier tail upper surface of letting out the groove partition wall flushes with the bottom of high bank dredging flow groove;
Fig. 5 is the plan view of high bank dredging flow groove, and wherein the wide build level of dredging flow groove is evenly arranged;
Fig. 6 is another plan view of high bank dredging flow groove, and the wide build of dredging flow groove is evenly arranged, and the angle of depression is established in the dredging flow groove outlet;
Fig. 7 is an again plan view of high bank dredging flow groove, and upstream multiply earial drainage connects the continuous segment level and enters the pond;
Fig. 8 is high bank dredging flow groove plan view, and upstream multiply earial drainage connects continuous segment and enters the pond, and the earial drainage notch is established the angle of depression;
Fig. 9 is that the wide build of dredging flow groove is evenly arranged according to the low bank dredging flow groove plan view of the first of the present invention, and the earial drainage outlet comprises the solid type bank of carrying water;
Figure 10 is that the wide build of dredging flow groove is evenly arranged according to the low bank dredging flow groove plan view of the second of the present invention, and the earial drainage outlet comprises the tooth grid type bank of carrying water;
Figure 11 is for falling expansion formula combination energy dissipater earial drainage Outlet Section elevation according to eco-friendly type of the present invention; High bank dredging flow groove is that the with no pressure multiply evenly goes out stream among the figure, and outlet comprises level and establishes the two kinds of forms in the angle of depression; Low bank dredging flow groove is for there being the multiply of pressure evenly to go out stream among the figure, and outlet comprises solid type and two kinds of forms of tooth grid type;
Figure 12 is for falling expansion formula combination energy dissipater earial drainage Outlet Section elevation according to eco-friendly type of the present invention; High bank dredging flow groove is that with no pressure goes out stream continuously among the figure, and outlet comprises level and establishes the two kinds of forms in the angle of depression; Low bank dredging flow groove is for there being the multiply of pressure evenly to go out stream among the figure, and outlet comprises solid type and two kinds of forms of tooth grid type;
Figure 13 is the low bank dredging flow groove outlet solid type according to the present invention local enlarged diagram of bank section of carrying water;
Figure 14 goes out the ability to speak grid type local enlarged diagram of bank section of carrying water for low bank dredging flow groove according to the present invention;
Figure 15 goes out the ability to speak grid type bank plane partial schematic diagram of carrying water for low bank dredging flow groove according to the present invention.
Figure 16 is the explanatory diagram of choosing flow structure.
The specific embodiment
Below, with reference to shown in accompanying drawing describe illustrative embodiments of the present invention in detail.This illustrative embodiments is example and can is utilized various form to implement by those skilled in the art.Therefore, the present invention is not defined in the illustrative embodiments described in this literary composition.
Eco-friendly type according to the present invention falls expansion formula combination energy dissipater, and it is two-layer that the earial drainage import comprises height, is respectively high bank earial drainage import 1 and low bank earial drainage import 2, their layouts that is arranged in parallel; The end of earial drainage import is provided with chooses stream or down stream structure.Its mechanism of energy dissipation is: current are let out by under the upstream, and lower sluicing flow point does not enter absorption basin 4 by high bank earial drainage section and low bank earial drainage section, exist certain water level to guarantee to form abundant submerged jets in the absorption basin during lower letting out.The current of high bank incident are injected absorption basin with horizontal direction or drop direction, low bank incident current are necessarily chosen the angle with absorption basin 4 formation and are entered absorption basin under the bank structure function of carrying water, the energy dissipating that in the absorption basin water body, bumps of the high bank that then is arranged in parallel and low bank incident current, guaranteed energy dissipating efficient, and letting out main flow under Gao Kan and the low bank restricts mutually, water surface is difficult to form larger rotary roll, fluid stable, reduced to a certain extent dissolved gas supersaturation degree in the water body of downstream, and range of atomized flow is little, can effectively improve the downstream ecology environment.
Choose in the flow structure of the present invention, with reference to shown in Figure 16, circular arc section end is to the mid portion of choosing the flow structure end, and is positioned at be called " on the bank " of choosing the flow structure top; And the described flow structure end of choosing is referred to as later on " behind the bank ".
The expansion formula combination energy dissipater that falls of the eco-friendly type in following examples tests in the some hydropower station multi-purpose project.
Embodiment 1
Eco-friendly type in the present embodiment falls expansion formula combination energy dissipating construction such as Fig. 1, Fig. 2, Fig. 5, Fig. 9, Figure 11 and shown in Figure 13, and its structure forms and comprises that carry water bank 10, seven of seven high bank dredging flow grooves 1, seven low bank dredging flow grooves 2, solid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.The quantity that it should be noted that above-mentioned high bank dredging flow groove and low bank dredging flow groove is only for exemplary, and not should be understood to determinately, and its quantity can be two, three or a plurality of arbitrarily.
Wherein: high bank dredging flow groove 1 goes out stream for the share split form without voltage levels, as shown in Figure 5; Each dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m.Low bank dredging flow groove and the parallel identical set of high bank dredging flow groove stream for the multiply of pressure is arranged, as shown in Figure 9, and each low bank dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the solid type bank 10 of carrying water, the long L of this bank of carrying water 7=12m, solid type carry water bank 10 partial structurtes as shown in figure 13, and the solid type bank specific design parameter of carrying water is: arc radius R=30m, choose angle α 1=15 °, α on the bank 2=45 °, long L on the bank 8=1.5m chooses bank height h 5=3m.High bank and low bank dredging flow groove section arrangement form as shown in figure 11, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=3m, low bank dredging flow groove height h 2=6m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove is 12m apart from absorption basin base plate height, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out the afterbody of groove partition wall 7 and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, high h 7=12m.Absorption basin 4 wide d 5=108m, the long L of absorption basin 3=228m, tail bank 5 high h 8=25m, the long L of Kan Ding 4=3m, the downstream apron bottom is apart from tail bank top h 9=10m, L 5=10m.
Embodiment 2
Eco-friendly type in the present embodiment falls expansion formula combination energy dissipating construction such as Fig. 1, Fig. 2, Fig. 6, Fig. 9, Figure 11 and shown in Figure 13, and structure forms and comprises that carry water bank 10, seven of seven high bank dredging flow grooves 1, seven low bank dredging flow grooves 2, solid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank dredging flow groove is that the share split form flows without extruding, and high bank dredging flow groove outlet arranges the 1:10 angle of depression from the overfull dam surface terminal point, as shown in Figure 6; Each high bank dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m, 1:10 angle of depression section 9 long L 6=8m.Low bank dredging flow groove and the parallel identical set of high bank dredging flow groove stream for the multiply of pressure is arranged, as shown in Figure 9, and each low bank dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each low bank dredging flow groove is provided with the solid type bank 10 of carrying water, the long L of the bank of carrying water 7=12m carries water the bank partial structurtes as shown in figure 13, and its design parameters is identical with embodiment 1.High bank and low bank dredging flow groove section arrangement form as shown in figure 11, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=3m, low bank dredging flow groove height h 2=6m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove is 12m apart from absorption basin base plate height, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange fairshaped pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, high h 7=12m.Absorption basin 4 wide d 5=108m, the long L of absorption basin 3=228m, tail bank 5 high h 8=25m, the long L of Kan Ding 4=3m, the downstream apron bottom is apart from tail bank top h 9=10m, L 5=10m.
Embodiment 3
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 1, Fig. 2, Fig. 5, Figure 10, Figure 11, Figure 14 and shown in Figure 15, and structure forms and comprises that carry water bank 11, seven of seven high bank dredging flow grooves 1, seven low bank dredging flow grooves 2, tooth grid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank dredging flow groove is that the share split form goes out stream without voltage levels, as shown in Figure 5; Each high bank dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m.Low bank dredging flow groove 2 and high bank dredging flow groove 1 parallel identical set have been and have pressed multiply to go out stream, as shown in figure 10, and each low bank dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the tooth grid type bank 11 of carrying water, the long L of the bank of carrying water 7=14.4m carries water bank partial structurtes and layout shown in Figure 14 and 15, and the tooth grid type bank specific design parameter of carrying water is: arc radius R=30m, choose angle α 1=15 °, bank height h carries water 5=3m, the thick d of the bank of carrying water 6=3m, bank interval d carries water 7=1.5m, α on the bank 2=45 °, long L on the bank 8=1.5m, entity section α between bank 3=8 °, entity section α behind the Kan Kan that carries water 4=16 °, entity segment length L behind the bank of carrying water 9=2.4m, the top is apart from absorption basin floor elevation h 6=2m.High bank and low bank dredging flow groove section arrangement form as shown in figure 11, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=2m, low bank dredging flow groove height h 2=7m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove is 12m apart from absorption basin base plate height, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out the afterbody of groove partition wall 7 and arrange streamlined pier tail 3, the long L of pier tail 1=6m, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Embodiment 4
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 1, Fig. 2, Fig. 6, Figure 10, Figure 11, Figure 14 and shown in Figure 15, and structure forms and comprises that carry water bank 10, seven of seven high bank dredging flow grooves 1, seven low bank dredging flow grooves 2, solid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank dredging flow groove is that the share split form flows without extruding, and high bank dredging flow groove outlet arranges the 1:10 angle of depression from the overfull dam surface terminal point, as shown in Figure 6; Each dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m, 1:10 angle of depression section 9 long L 6=8m.Low bank dredging flow groove 2 and high bank dredging flow groove 1 parallel identical set, and be and press multiply to go out to flow, as shown in figure 10, each low bank dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the tooth grid type bank 11 of carrying water, the long L of the bank of carrying water 7=14.4m carries water bank partial structurtes and layout shown in Figure 14 and 15, and the solid type bank specific design parameter of carrying water is: arc radius R=30m, choose angle α 1=15 °, bank height h carries water 5=3m, the thick d of the bank of carrying water 6=3m, bank interval d carries water 7=1.5m, α on the bank 2=45 °, long L on the bank 8=1.5m, entity section α between bank 3=8 °, entity section α behind the Kan Kan that carries water 4=16 °, entity segment length L behind the bank of carrying water 9=2.4m, the top is apart from absorption basin floor elevation h 6=2m.High bank and low bank dredging flow groove section arrangement form as shown in figure 11, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down bank dredging flow groove 2 apart from absorption basin base plate height h 1=2m, low bank dredging flow groove 2 height h 2=7m, height bank dredging flow groove 1 depth displacement h 3=3m, high bank dredging flow groove 1 is 12m apart from absorption basin base plate height, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Embodiment 5
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 3, Fig. 4, Fig. 7, Fig. 9, Figure 12 and shown in Figure 13, and structure forms and comprises that carry water bank 10, seven of seven high bank dredging flow grooves 1, high bank dredging flow groove continuous segment 8, seven low bank dredging flow grooves 2, solid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank dredging flow groove is that conitnuous forms go out stream without voltage levels, as shown in Figure 7; Each dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m, earial drainage continuous segment 8 is to absorption basin front end, L 2=80m, wide d 4=108m.Low bank dredging flow groove and the parallel identical set of high bank dredging flow groove stream for the multiply of pressure is arranged, as shown in Figure 9, and each dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the solid type bank 10 of carrying water, the long L of the bank of carrying water 7=12m carries water the bank partial structurtes as shown in figure 13.High bank and low bank dredging flow groove section arrangement form as shown in figure 12, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down bank dredging flow groove 2 apart from the base plate height h of absorption basin 4 1=3m, low bank dredging flow groove height h 2=6m, height bank dredging flow groove 1 depth displacement h 3=3m, high bank dredging flow groove is 12m apart from absorption basin base plate height, high bank dredging flow groove 1 height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Embodiment 6
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 3, Fig. 4, Fig. 8, Fig. 9, Figure 12 and shown in Figure 13, and structure forms and comprises that carry water bank 10, seven of seven high bank dredging flow grooves 1, high bank dredging flow groove continuous segment 8, seven low bank dredging flow grooves 2, solid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank earial drainage is that conitnuous forms flow without extruding, and high bank dredging flow groove outlet arranges the 1:10 angle of depression from the overfull dam surface terminal point, as shown in Figure 8; Each dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m; Earial drainage continuous segment 8 is to absorption basin front end, L 2=80m, wide d 4=108m, 1:10 angle of depression section 9 long L 6=8m.Low bank dredging flow groove and the parallel identical set of high bank dredging flow groove stream for the multiply of pressure is arranged, as shown in Figure 9, and each earial drainage groove width d 1=12m lets out the thick d of groove partition wall 3=4m; The outlet of each dredging flow groove is provided with the solid type bank 10 of carrying water, the long L of the bank of carrying water 7=12m carries water the bank partial structurtes as shown in figure 13.High bank and low bank dredging flow groove section arrangement form as shown in figure 12, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and namely hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=3m, low bank dredging flow groove height h 2=6m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove is 12m apart from absorption basin base plate height, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Embodiment 7
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 3, Fig. 4, Fig. 7, Figure 10, Figure 12, Figure 14 and shown in Figure 15, and structure forms and comprises that carry water bank 11, seven of seven high bank dredging flow grooves 1, high bank dredging flow groove continuous segment 8, seven low bank dredging flow grooves 2, tooth grid types let out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank dredging flow groove is that conitnuous forms go out stream without voltage levels, as shown in Figure 7; Each dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m, earial drainage continuous segment 8 is to absorption basin front end, L 2=80m, wide d 4=108m.Low bank dredging flow groove and the parallel identical set of high bank dredging flow groove stream for the multiply of pressure is arranged, as shown in figure 10, and each low bank dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the tooth grid type bank 11 of carrying water, this tooth grid type bank 11 long L that carry water 7=14.4m carries water bank 11 partial structurtes and layout shown in Figure 14 and 15.High bank and low bank dredging flow groove section arrangement form as shown in figure 12, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=2m, low bank dredging flow groove height h 2=7m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove 1 is 12m apart from absorption basin base plate height, high bank dredging flow groove 1 height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Embodiment 8
Eco-friendly type in the present embodiment falls expansion formula disspation through hydraudic jimp worker's structure such as Fig. 3, Fig. 4, Fig. 8, Figure 10, Figure 12, Figure 14 and shown in Figure 15, and structure forms carry water bank 11, seven of the earial drainage continuous segment 8 that comprises seven high bank dredging flow grooves 1, high bank dredging flow groove, seven low bank dredging flow grooves 2, tooth grid types and lets out groove partition wall 7, absorption basin 4, absorption basin tail bank 5, downstream apron 6.Wherein: high bank earial drainage is that conitnuous forms flow without extruding, and high bank dredging flow groove outlet arranges the 1:10 angle of depression from the overfull dam surface terminal point, as shown in Figure 8; Each high bank dredging flow groove 1 wide d 2=12m lets out groove partition wall 7 thick d 3=4m; Earial drainage continuous segment 8 is to absorption basin 4 front ends, L 2=80m, wide d 4=108m, 1:10 angle of depression section 9 long L 6=8m.Low bank dredging flow groove 2 and high bank dredging flow groove 1 parallel identical set have been and have pressed multiply to go out stream, as shown in figure 10, and each dredging flow groove 2 wide d 1=12m lets out groove partition wall 7 thick d 3=4m; The outlet of each dredging flow groove is provided with the tooth grid type bank 11 of carrying water, the long L of the bank of carrying water 7=14.4m carries water bank partial structurtes and layout shown in Figure 14 and 15, and the tooth grid type bank specific design parameter of carrying water is identical with embodiment 5, in this omission.High bank and low bank dredging flow groove section arrangement form as shown in figure 12, the bank bottom of carrying water overlaps with the absorption basin base plate and joins, and hangs down the bank dredging flow groove apart from absorption basin base plate height h 1=2m, low bank dredging flow groove height h 2=7m, height bank dredging flow groove depth displacement h 3=3m, high bank dredging flow groove 1 is 12m apart from the base plate height of absorption basin 4, high bank dredging flow groove height h 4=18m.Carry water and alternatively behind the Kan Kan arrange that 30 ° are pasted pin.Let out groove partition wall 7 afterbodys and arrange streamlined pier tail 3, the long L of pier tail 1=6m, the continuous dredging flow groove base plate of the paramount bank of its upper surface, absorption basin is identical with embodiment 2 with the design parameters of the bank of carrying water etc., in this omission.
Show through numerical simulation result, eco-friendly type of the present invention falls expansion formula disspation through hydraudic jimp worker, two bursts of main flows are at downstream absorption basin water body inner impact, the inner turbulent fluctuation of water body is violent, energy dissipating efficient is higher, and under the interaction of two bursts of main flows, the energy dissipating water surface does not form in a big way rotary roll, downstream m flow state is stable, but the required downstream water depth of energy dissipater of the present invention is higher.Calculating show tooth grid type carry water bank the hydraulic jump state than solid type carry water bank steadily, and fluidised form is more stable, energy dissipating efficient is higher, the therefore preferential recommend adoption tooth grid type bank of carrying water.
Aforementioned description to concrete exemplary of the present invention is for the purpose with illustration is described.These descriptions are not to think limit the present invention, perhaps the present invention are defined as disclosed precise forms, and scope of the present invention is intended to be limited by appending claims and equivalents thereof.

Claims (9)

1. falling of an eco-friendly type expanded the combination energy dissipater, comprising:
A plurality of upstreams dredging flow groove;
Be arranged on and let out the groove partition wall between the dredging flow groove of described a plurality of upstreams;
Be arranged on described upstream dredging flow groove the end choose flow structure;
Be arranged on the described absorption basin of choosing the downstream part of flow structure; With
Be arranged on absorption basin tail bank and the downstream apron of the downstream part of described absorption basin,
It is characterized in that described upstream dredging flow groove is comprised of a plurality of high bank dredging flow grooves and a plurality of low bank dredging flow groove, this high bank dredging flow groove and low bank dredging flow groove are arranged in parallel up and down.
2. falling of an eco-friendly type expanded the combination energy dissipater, comprising:
The upstream dredging flow groove;
Be arranged on described upstream dredging flow groove the end choose flow structure;
Be arranged on the described absorption basin of choosing the downstream part of flow structure; With
Be arranged on absorption basin tail bank and the downstream apron of the downstream part of described absorption basin,
It is characterized in that described upstream dredging flow groove is comprised of a high bank dredging flow groove and a plurality of low bank dredging flow groove that separates with each other, this high bank dredging flow groove and described a plurality of low bank dredging flow groove are arranged in parallel up and down, and described a plurality of low bank dredging flow grooves are spaced apart by letting out the groove partition wall.
3. falling of eco-friendly type according to claim 1 and 2 expanded the combination energy dissipater, it is characterized in that, described low bank dredging flow groove is for there being the multiply of pressure to go out stream, describedly choose the bank of carrying water that flow structure is solid type, carrying water bank and described low smooth-going joining of bank dredging flow groove of this solid type, and the base plate of the bottom surface of the bank of carrying water and described absorption basin coincides.
4. falling of eco-friendly type according to claim 1 and 2 expanded the combination energy dissipater, it is characterized in that, described low bank dredging flow groove is for there being the multiply of pressure to go out stream, describedly choose the bank of carrying water that flow structure is tooth grid type, carrying water bank and described low smooth-going joining of bank dredging flow groove of this tooth grid type, and the bottom surface of the bank of carrying water of this tooth grid type and the base plate of described absorption basin coincide.
5. falling of eco-friendly type according to claim 1 expanded the combination energy dissipater, it is characterized in that, the level that described high bank dredging flow groove is the with no pressure multiply goes out stream, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the top of described high bank dredging flow groove.
6. falling of eco-friendly type according to claim 1 and 2 expanded the combination energy dissipater, it is characterized in that, described high bank dredging flow groove is the stream that tilts of with no pressure, the earial drainage outlet of this high bank dredging flow groove comprises the corner sections of bowing, the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the top of described high bank dredging flow groove.
7. falling of eco-friendly type according to claim 1 and 2 expanded the combination energy dissipater, it is characterized in that, the level that described high bank dredging flow groove is with no pressure goes out stream, and the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the bottom of described high bank dredging flow groove.
8. falling of eco-friendly type according to claim 1 and 2 expanded the combination energy dissipater, it is characterized in that, described high bank dredging flow groove is the stream that tilts of with no pressure, the earial drainage outlet of this high bank dredging flow groove comprises the corner sections of bowing, the described tail end of letting out the groove partition wall is provided with fairshaped pier tail, and the upper surface of described pier tail flushes with the bottom of described high bank dredging flow groove.
According to claim 3 or falling of 4 described eco-friendly types expand the combination energy dissipater, it is characterized in that, be provided with 10 ° ~ 30 ° subsides pin behind the bank of choosing flow structure of described low bank dredging flow groove from its top.
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CN103410128A (en) * 2013-07-29 2013-11-27 中国长江三峡集团公司 Underflow energy dissipation structure for fish back type drop bank
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CN103526733A (en) * 2013-10-25 2014-01-22 三峡大学 Flood discharge and power generation energy dissipation hydropower station
CN105625280A (en) * 2015-12-30 2016-06-01 中国电建集团中南勘测设计研究院有限公司 Submerged jet energy dissipation structure
CN106368186A (en) * 2016-11-11 2017-02-01 中国电建集团北京勘测设计研究院有限公司 Jet flow and drop flow energy dissipation structure for overflowing of shore-side flood protection gap of gravity dam
CN106368186B (en) * 2016-11-11 2018-08-17 中国电建集团北京勘测设计研究院有限公司 It passes the flood period the choosing of the breach flow, down stream energy-dissipating structure for gravity dam bank
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