CN114541344A - Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head - Google Patents
Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head Download PDFInfo
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- CN114541344A CN114541344A CN202210353153.9A CN202210353153A CN114541344A CN 114541344 A CN114541344 A CN 114541344A CN 202210353153 A CN202210353153 A CN 202210353153A CN 114541344 A CN114541344 A CN 114541344A
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- gate
- water retaining
- outlet
- water
- sluicing
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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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- 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
- E02B7/20—Movable barrages; 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
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/205—Barrages controlled by the variations of the water level; automatically functioning barrages
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Barrages (AREA)
Abstract
The invention discloses a sluicing tunnel arrangement structure adopting overflow depressurization to reduce a gate water retaining head. By regulating and controlling the serial gates in the water drainage main tunnel and the control gates in one or more groups of drainage branch tunnels, the total water retaining head of the metal structure equipment of the engineering water drainage building can be obviously improved by grading water retaining of the gates under the condition of fully utilizing the water retaining of a single gate.
Description
Technical Field
The invention relates to a water conservancy and hydropower engineering sluicehole arrangement structure, in particular to a sluicehole arrangement structure adopting overflow depressurization to reduce a gate water retaining head.
Background
The steel gates in the hydraulic and hydroelectric engineering are classified according to different working properties into working gates, accident gates and overhaul gates according to 1.0.3 in the specification of steel gate design in the hydraulic and hydroelectric engineering (SL 74-2013) and 2.0.1 to 2.0.3 in the specification of steel gate design in the hydraulic and hydroelectric engineering (NB 35055 and 2015), and the steel gates in the hydraulic and hydroelectric engineering (SL 74-2013) are divided into low-head, medium-head, high-head and extra-high-head gates according to the design heads in the specification of corresponding terms. Specifically, a low water head gate is below 25m of the designed water head, a medium water head gate is 25-50 m of the designed water head, a high water head gate is 50-80 m of the designed water head, and an extra-high water head gate is above 80m of the designed water head. The higher the design head of the gate, the more difficult it is to design the gate.
The water retaining height of the steel gate in the domestic hydraulic metal structure is less than 80 m. From the end of the 20 th century, water conservancy and hydropower in China enters a high-speed development period, and after the water conservancy and hydropower in China enters the 21 st century, along with the rapid development of economy in China and the continuous improvement of the technological level, the development of water conservancy and hydropower engineering enters a new stage, hydraulic metal structures are synchronously developed, and the water retaining area and the water retaining head of a gate are also continuously improved. The gate water retaining heads in the projects exceed 120m, wherein the bottom hole accident gate of the bay hydropower station adopts a plane chain wheel gate, the size of the orifice is 5m multiplied by 12m, the bottom hole working gate adopts an eccentric hinge arc gate, the size of the orifice is 5m multiplied by 7m, and the water retaining heads of the two gates are 160 m.
Under the same condition, the water retaining head of the gate is high, and larger water retaining pressure is inevitably brought. The larger water retaining pressure firstly influences the structural design of the gate, and secondly influences the supporting design, the water retaining design and the embedded part design of the gate. In addition, under the condition of high water head, the problems of the hydraulics of a gate slot and the hydraulics of the bottom edge of the gate of the plane gate, the vibration of a door body of the radial gate when the radial gate is opened, and the like exist. The design of high water head gate takes more factors into consideration, and the design difficulty is large.
With the development of economic strength and scientific technology in China, it is expected that a high dam and a large reservoir will emerge constantly, the water retaining head of the hydraulic and hydroelectric engineering will be improved constantly, and higher requirements will be put forward on the design of metal structure equipment.
Disclosure of Invention
In order to adapt to the technical development of future hydraulic and hydroelectric engineering and improve the water retaining head of metal structural equipment of the hydraulic and hydroelectric engineering, the invention provides a water drainage tunnel arrangement structure which adopts overflow depressurization to reduce the water retaining head of a gate, and can effectively solve the problem of design and arrangement of metal structural equipment under the condition of ultrahigh and unconventional designed water head which may appear in the future.
In order to solve the technical problems, the invention adopts the technical scheme that: a sluicing hole arrangement structure adopting overflow depressurization to reduce a gate water retaining head comprises a sluicing main hole, an inlet gate and an outlet gate, wherein a drainage branch hole is arranged between the inlet gate and the outlet gate in the sluicing main hole, a control gate is arranged at the outlet of the drainage branch hole, and the elevation of a bottom plate of the control gate is higher than that of the bottom plate of the outlet gate.
The inlet gate adopts a plane gate, and the outlet gate and the control gate adopt an arc gate.
A sluicing hole arrangement structure adopting overflow depressurization to reduce a gate water retaining head comprises a sluicing main hole, an inlet gate and an outlet gate, wherein at least one water retaining gate is arranged between the inlet gate and the outlet gate in the sluicing main hole, a drainage branch hole is respectively arranged between the inlet gate and the adjacent water retaining gate in the sluicing main hole, between two adjacent water retaining gates and between the outlet gate and the adjacent water retaining gate, a control gate is uniformly distributed at the outlet of each drainage branch hole, the bottom elevation of the control gate arranged along the outlet of each drainage branch hole from the inlet gate to the outlet gate is sequentially reduced, the bottom elevation of the highest control gate is lower than the total water retaining head, and the bottom elevation of the lowest control gate is higher than the bottom elevation of the sluicing main hole.
The inlet gate and the water retaining gate are plane gates, and the outlet gate and the control gate are radial gates.
The invention has the beneficial effects that: by regulating and controlling the serial gates in the water drainage main tunnel and the control gates in one or more groups of drainage branch tunnels, the total water retaining head of the metal structure equipment of the engineering water drainage building can be obviously improved by grading water retaining of the gates under the condition of fully utilizing the water retaining of a single gate.
Drawings
FIG. 1 is a schematic view of a set of branch drainage holes in a main drainage hole and a control gate in the branch drainage hole, according to the present invention;
FIG. 2 is a schematic view of the structure of adding two drainage branch holes in the main drainage hole and arranging a control gate in each drainage branch hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in figure 1, the sluicing cave arrangement structure adopting overflow depressurization to reduce the water retaining head of the gate comprises a sluicing main cave 1, an inlet gate 2 and an outlet gate 3, wherein a drainage branch cave 4 is arranged between the inlet gate 2 and the outlet gate 3 in the sluicing main cave 1, a control gate 5 is arranged at the outlet of the drainage branch cave 4, and the floor elevation of the control gate 5 is higher than the floor elevation of the outlet gate 3.
Preferably, the inlet gate 2 is a plane gate, and the outlet gate 3 and the control gate 5 are radial gates.
As shown in fig. 2, the sluicing hole arrangement structure adopting overflow depressurization to reduce the gate water head of the sluicing hole of the invention comprises a sluicing main hole 1, an inlet gate 2 and an outlet gate 3, wherein at least one water retaining gate 6 is arranged between the inlet gate 2 and the outlet gate 3 in the sluicing main hole 1, a drainage branch hole is respectively arranged between the inlet gate 2 and the adjacent water retaining gate 6, between two adjacent water retaining gates 6 and between the outlet gate 3 and the adjacent water retaining gate 6 in the sluicing main hole 1, a control gate is uniformly arranged at each drainage branch hole outlet, the bottom elevation of the control gate arranged along each drainage branch hole outlet from the inlet gate 2 to the outlet gate 3 is sequentially reduced, the bottom elevation of the highest control gate is lower than the total water head, and the bottom elevation of the lowest control gate is higher than the bottom elevation of the sluicing main hole 1.
Preferably, the inlet gate 2 and the water retaining gate 6 are plane gates, and the outlet gate 3, the control gate 5 and the control gate 8 are radial gates.
In fig. 2, a water gate 6 is arranged between an inlet gate 2 and an outlet gate 3 in a main sluicing hole 1; a drainage branch tunnel 4 is arranged between a water retaining gate 6 and an outlet gate 3 in the drainage main tunnel 1, and a control gate 5 is arranged in the drainage branch tunnel 4; a drainage branch tunnel 7 is arranged between the inlet gate 2 and the water gate 6 in the drainage main tunnel 1, and a control gate 8 is arranged in the drainage branch tunnel 7.
In fig. 1 and 2, H is the total water retaining head of the gate, H0 is the sill elevation at the position of the outlet gate 3, and H1 and H2 are the corresponding gate water retaining heads set according to the engineering requirements, wherein: h0 < H1 < H2 < H.
As shown in fig. 1, during normal water retaining, the inlet gate 2 and the outlet gate 3 are in a closed state, and the control gate 5 is in an open state; when the water retaining head of the outlet gate 3 in the water drainage main tunnel 1 is lower than H1, the inlet gate 2 supplements water, and the excess water overflows through the drainage branch tunnel 4.
When the engineering needs to discharge, the control gate 5 and the inlet gate 2 are opened first, and the outlet gate 3 is opened later; when the inlet gate 2 is opened and the outlet gate 3 is not opened, the excessive water flows through the drainage branch hole 4 and overflows; when the inlet gate 2 and the outlet gate 3 are both opened, the project is in a normal drainage state.
When the water flow is required to be cut off after the engineering is finished, the control gate 5 is opened firstly, the outlet gate 3 is closed, and the inlet gate 2 is closed later; when the outlet gate 3 is closed and the inlet gate 2 is not closed, the excess water flows through the drainage branch hole 4 and overflows; when the inlet gate 2 and the outlet gate 3 are both closed, the project is in a normal water retaining state.
When the water retaining head of the inlet gate 2 needs to be reduced and the water retaining head of the outlet gate 3 needs to be increased, the control gate 5 can be operated to regulate and control water flow, so that the water head in the drainage branch hole 4 is increased to the required height; when the water retaining head of the inlet gate 2 needs to be increased and the water retaining head of the outlet gate 3 needs to be reduced, the control gate 5 can be opened, and the outlet gate 3 is lifted to release partial water flow in the drainage main tunnel 1, so that the water head in the drainage branch tunnel 4 is reduced to the required height.
As shown in fig. 2, during normal water retaining, the inlet gate 2, the outlet gate 3 and the water retaining gate 6 are in a closed state, and the control gate 5 and the control gate 8 are in an open state; when the water retaining head of the water retaining gate 6 is lower than H2, water is supplemented through the inlet gate 2, and the excessive water overflows through the drainage branch hole 7; when the water retaining head of the outlet gate 3 is lower than H1, water is simultaneously supplemented through the inlet gate 2 and the water retaining gate 6, the excess water in front of the water retaining gate 6 overflows through the drainage branch hole 7, and the excess water in front of the outlet gate 3 overflows through the drainage branch hole 4.
When the engineering needs to discharge, firstly opening the control gate 5 and the control gate 8, then sequentially opening the inlet gate 2 and the water retaining gate 6, and finally opening the outlet gate 3; when the inlet gate 2 is opened and the water retaining gate 6 and the outlet gate 3 are not opened, the excess water flows through the drainage branch hole 7 and overflows; when the inlet gate 2 and the water retaining gate 6 are opened and the outlet gate 3 is not opened, the excess water flows through the drainage branch hole 7 and the drainage branch hole 4 to overflow; when the inlet gate 2, the water retaining gate 6 and the outlet gate 3 are all opened, the project is in a normal drainage state.
When the water flow is required to be cut off after the engineering is finished, the control gate 5 and the control gate 8 are opened firstly, the outlet gate 3 is closed later, the water retaining gate 6 is closed, and the inlet gate 2 is closed finally; when the outlet gate 3 is closed and the water retaining gate 6 and the inlet gate 2 are not closed, the excess water flows through the drainage branch hole 7 and the drainage branch hole 4 to overflow; when the outlet gate 3 and the water retaining gate 6 are closed and the inlet gate 2 is not closed, the excess water flows through the drainage branch hole 7 and overflows; when the inlet gate 2, the water retaining gate 6 and the outlet gate 3 are all closed, the project is in a normal water retaining state.
When the water retaining head of the water retaining gate 6 needs to be reduced and the water retaining head of the outlet gate 3 needs to be increased, the control gate 5 can be operated to regulate and control water flow, so that the water head in the drainage branch hole 4 is raised to the required height; when the water retaining head of the water retaining gate 6 needs to be increased and the water retaining head of the outlet gate 3 needs to be reduced, the control gate 5 can be opened, and the outlet gate 3 is lifted to discharge part of water flow in the drainage main tunnel 1, so that the water head in the drainage branch tunnel 4 is reduced to the required height; when the water retaining head of the inlet gate 2 needs to be reduced and the water retaining head of the water retaining gate 6 needs to be increased, the control gate 8 can be operated to regulate and control water flow, so that the water head in the drainage branch hole 7 is raised to the required height; when the water retaining head of the inlet gate 2 needs to be increased and the water retaining head of the water retaining gate 6 needs to be reduced, the control gate 8 can be opened, and the outlet gate 6 is lifted to release part of the water flow in the main drainage tunnel 1, so that the water head in the drainage branch tunnel 7 is reduced to the required height.
The drainage branch holes are not limited to one or two, when the number of the drainage branch holes is not less than two, the water retaining gate and the control gate are arranged at corresponding positions according to the analogy, and the analogy is carried out.
The structure of the invention can adapt to the technical development of future hydraulic and hydroelectric engineering, improve the total water retaining head of the metal structure equipment of the hydraulic and hydroelectric engineering, and effectively solve the problem of design and arrangement of the metal structure equipment under the condition of ultrahigh and unconventional designed head which may appear in the future. By regulating and controlling the serial gates in the water drainage main tunnel and the control gates in one or more groups of drainage branch tunnels, the total water retaining head of the metal structure equipment of the engineering water drainage building can be obviously improved by grading water retaining of the gates under the condition of fully utilizing the water retaining of a single gate.
And assuming that the water retaining head of each gate is H when each gate independently retains water, and the total water retaining head of the metal structure equipment of the hydraulic building is H.
FIG. 1: gate 3 water retaining head: H-H1
Then: H-H1 + H-2H
FIG. 2: gate 3 water retaining head: H-H1
6 manger plate flood heads at gate: H-H2-H1
Then: h2+ H1+2H 3H
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (4)
1. The utility model provides an adopt overflow step-down to reduce sluicing hole arrangement structure of gate manger plate flood peak, includes sluicing main tunnel (1), import gate (2) and export gate (3), its characterized in that arranges one earial drainage branch tunnel (4) between import gate (2) in sluicing main tunnel (1) and export gate (3), arranges control gate (5) in earial drainage branch tunnel (4) export, and the bottom plate elevation of control gate (5) is higher than the bottom plate elevation of export gate (3).
2. The arrangement of a sluicehole for reducing the damming head of a gate by means of overflow depressurization as claimed in claim 1, wherein the inlet gate (2) is a flat gate and the outlet gate (3) and the control gate (5) are radial gates.
3. A sluicing hole arrangement structure adopting overflow depressurization to reduce a gate water retaining head comprises a sluicing main hole (1), an inlet gate (2) and an outlet gate (3), and is characterized in that at least one water retaining gate (6) is arranged between the inlet gate (2) and the outlet gate (3) in the sluicing main hole (1), a drainage branch hole is respectively arranged between the inlet gate (2) and the adjacent water retaining gate (6) in the sluicing main hole (1), between two adjacent water retaining gates (6) and between the outlet gate (3) and the adjacent water retaining gate (6), a control gate is uniformly distributed at each drainage branch hole outlet, the bottom elevation of the control gate arranged from the inlet gate (2) to the outlet gate (3) is sequentially reduced, and the bottom elevation of the highest control gate is lower than the total water retaining head, the bottom elevation of the lowest control gate is higher than that of the main sluicing cave (1).
4. The arrangement structure of the sluicehole for reducing the gate waterhead by overflowing with depressurizing as claimed in claim 2, wherein the inlet gate (2) and the waterhead gate (6) are planar gates, and the outlet gate (3) and the control gate are radial gates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353153.9A CN114541344A (en) | 2022-04-02 | 2022-04-02 | Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353153.9A CN114541344A (en) | 2022-04-02 | 2022-04-02 | Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head |
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| Publication Number | Publication Date |
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| CN114541344A true CN114541344A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210353153.9A Pending CN114541344A (en) | 2022-04-02 | 2022-04-02 | Drainage tunnel arrangement structure adopting overflow depressurization to reduce gate water retaining head |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2011740C1 (en) * | 1990-02-09 | 1994-04-30 | Василий Петрович Ягин | Device for water intake from waterway |
| CN102644261A (en) * | 2012-05-02 | 2012-08-22 | 黄河勘测规划设计有限公司 | Surge shaft construction method combining impedance with overflow |
| CN107130568A (en) * | 2017-07-06 | 2017-09-05 | 中国水利水电科学研究院 | More than 200 meters superelevation dam reservoir emptying tunnel structures and its arrangement and application method |
| CN108677894A (en) * | 2018-05-29 | 2018-10-19 | 长江勘测规划设计研究有限责任公司 | It is a kind of to utilize pipeline type karstic ground water electricity generation system and design method |
| CN109267549A (en) * | 2018-10-15 | 2019-01-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Diversion tunnel structure |
| CN210002356U (en) * | 2018-12-21 | 2020-01-31 | 中国电建集团贵阳勘测设计研究院有限公司 | high dam step-by-step water retaining and emptying system |
-
2022
- 2022-04-02 CN CN202210353153.9A patent/CN114541344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2011740C1 (en) * | 1990-02-09 | 1994-04-30 | Василий Петрович Ягин | Device for water intake from waterway |
| CN102644261A (en) * | 2012-05-02 | 2012-08-22 | 黄河勘测规划设计有限公司 | Surge shaft construction method combining impedance with overflow |
| CN107130568A (en) * | 2017-07-06 | 2017-09-05 | 中国水利水电科学研究院 | More than 200 meters superelevation dam reservoir emptying tunnel structures and its arrangement and application method |
| CN108677894A (en) * | 2018-05-29 | 2018-10-19 | 长江勘测规划设计研究有限责任公司 | It is a kind of to utilize pipeline type karstic ground water electricity generation system and design method |
| CN109267549A (en) * | 2018-10-15 | 2019-01-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Diversion tunnel structure |
| CN210002356U (en) * | 2018-12-21 | 2020-01-31 | 中国电建集团贵阳勘测设计研究院有限公司 | high dam step-by-step water retaining and emptying system |
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