CN109555087A - The two dam structures and its application method of runtime not pump drainage turn(a)round interim pump drainage - Google Patents
The two dam structures and its application method of runtime not pump drainage turn(a)round interim pump drainage Download PDFInfo
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- CN109555087A CN109555087A CN201910008195.7A CN201910008195A CN109555087A CN 109555087 A CN109555087 A CN 109555087A CN 201910008195 A CN201910008195 A CN 201910008195A CN 109555087 A CN109555087 A CN 109555087A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000012423 maintenance Methods 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000008595 infiltration Effects 0.000 claims description 10
- 238000001764 infiltration Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/10—Gravity dams, i.e. those in which the weight of the structure prevents overturning
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Barrages (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明涉及水利水电工程泄洪消能设计领域，公开了一种运行期不抽排检修期临时抽排的二道坝结构，包括二道坝坝体，二道坝坝体的上游坝面和下游坝面均从上至下开设有若干个排水孔，二道坝坝体内底部设有水平的基础排水廊道，排水孔均与基础排水廊道连通，二道坝坝体内位于基础排水廊道下方设有集水井，集水井与基础排水廊道连通，集水井与二道坝坝体顶部之间设有竖直的抽水井，抽水井顶部出口位置设有安装水泵底座的预留坑。本发明还公开了一种运行期不抽排检修期临时抽排的二道坝结构的运用方法。本发明运行期不抽排检修期临时抽排的二道坝结构及其运用方法，仅检修期进行临时抽排，运行费用大大降低，维护管理方便。
The invention relates to the field of flood discharge and energy dissipation design of water conservancy and hydropower projects, and discloses a secondary dam structure that is not pumped during operation period and temporarily drained during maintenance period, comprising a secondary dam body, an upstream dam surface and a downstream of the secondary dam body. There are several drainage holes on the dam surface from top to bottom. There are horizontal foundation drainage corridors at the bottom of the dam body of Erdao dam. The drainage holes are all connected with the foundation drainage corridor. The body of Erdao dam is located below the foundation drainage corridor. There is a water collecting well, which is connected with the foundation drainage gallery. A vertical pumping well is set between the water collecting well and the top of the Erdao dam. The outlet of the top of the pumping well is provided with a reserved pit for installing the pump base. The invention also discloses an application method of the secondary dam structure that is not drained during the operation period and is temporarily drained during the maintenance period. According to the invention, the secondary dam structure and the application method for temporary extraction during the maintenance period without extraction during the operation period can be temporarily extracted only during the maintenance period, the operation cost is greatly reduced, and the maintenance and management are convenient.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering Design of Discharge Dissipation fields, and in particular to a kind of not pump drainage turn(a)round runtime
The two dam structures and its application method of interim pump drainage.
Background technique
With the construction of Southwestern China area large water conservancy hydroelectric engineering, the engineerings such as " high water head, big flow, narrow river valley " are special
The more aobvious protrusion of point, flood-discharge energy-dissipating is the emphasis studied in engineering safely.In existing induced joint engineering Design of Discharge Dissipation, dam body
Almost all uses the flood-discharge energy-dissipating mode of down stream of choosing, and this Energy Dissipation Modes have simple engineering structure, short time limit and to letting out
Flow, Tailwater Depth change adaptable feature.Since induced joint engineering flood discharge power is huge, to avoid release floodwatering flow under
Trip river causes seriously to wash away, and ensures flood discharge safety, needs to be arranged cushion pool behind dam and carries out energy dissipating, and is arranged in cushion pool end
Two dams are with harmony high water level, to guarantee there is enough energy dissipating water bodys and water cushion depth in cushion pool.
In existing induced joint engineering, the two dam overwhelming majority use concrete gravity dam pattern, and are arranged in dam body
Permanent closure evacuation system: being arranged the horizontal gallery of two row or multi-row in dam body, close to upstream and downstream dam facing position cloth between gallery
Drainage in dam body hole is set, sets dam base drainage well in the gallery of bottom；Sump and pump house are arranged in bottom, and install the water pump that permanently draws water.
It seeps water within the runtime, dam and is pooled in underdrain well by drainage in dam body hole and gallery, is discharged by water pump.Close pump drainage
Two dam of formula can effectively be discharged in dam and seep water, and reduce osmotic pressure and Uplift in dam body, improve the stabilization on two dams
Property.But closing two dam structure of pump-drainage type need to continue pump drainage in the normal operation phase, longtime running maintenance, construction investment and operation at
This is larger.
It in general, include: 1. water level in the high cushion pool of harmony in the main function that two dams are arranged in cushion pool end；2. blocking
Gear downstream river course sandstone back-silts to avoiding denuding in cushion pool；3. blocking downstream water in cushion pool turn(a)round as cushion pool
Condition is overhauled in offer dryly, therefore the main of two dams with condition includes the following two kinds situation:
(1) phase is operated normally
During operating normally phase flood discharge, two dams are integrally submerged under water, and lower sluicing stream crosses two dam dam crest streams
Downstream, the substantially anhydrous head difference of two above and below the dam or head difference very little.Even if at this point, leaning on it without pump drainage measure in two dams
Self weight can meet stability requirement completely.Therefore, the evacuation system in two dam of normal operation phase is not necessarily to.
(2) cushion pool turn(a)round
Behind dam during cushion pool maintenance, two dams need to block downstream water, and condition of overhauling dryly is provided for cushion pool, general
It is acted on by downstream water pressure and silt pressure, stress condition and general gravity dam are almost the same.To meet the steady of two dams
Determine and answer force request, need that pump drainage measure is arranged in dam body and carry out pump drainage, to reduce the intracorporal osmotic pressure of foundation plane and dam
Power.
It is found that two dams are only during cushion pool maintenance there are necessity of pump drainage, runtime pump drainage is complete for above-mentioned analysis
It is not necessary to.Existing two dam structure of closing pump-drainage type need to continue pump drainage in the normal operation phase, longtime running maintenance, operation at
This is higher, and operation maintenance management is complicated.
Summary of the invention
The purpose of the present invention is to the deficiency of above-mentioned technology, a kind of runtime not pump drainage turn(a)round interim pump drainage is provided
Two dam structures and its application method, only turn(a)round, carries out interim pump drainage, and operating cost substantially reduces, and maintenance management is convenient.
To achieve the above object, two dam structures of the runtime not pump drainage turn(a)round interim pump drainage designed by the present invention,
The two dam dam bodys including being located at cushion pool end, two dam dam body are concrete gravity dam, two dam dam body
Upstream dam facing and downstream dam facing offer several drainage holes from top to bottom, and bottom is equipped with horizontal in two dam dam body
Foundation drainage gallery, the drainage hole are connected to the foundation drainage gallery, and the basis is located in two dam dam body
Sump is equipped with below collector drain, the sump is connected to the foundation drainage gallery, the infiltration of two dam dam body
The sump can be converged into, is equipped with vertical pumped well, the pumping between the sump and two dam dam body top
Well top exit position is equipped with the reserved hole of installation engineering for pump housing.
Preferably, several horizontal traffic collector drains, the friendship are additionally provided in two dam dam body from top to bottom
Logical collector drain is connected to the foundation drainage gallery, the drainage hole above each traffic collector drain with the traffic
Collector drain connection is catchmented described in the intracorporal infiltration in the dam two Dao Ba preferably remittance by the traffic collector drain
Well.
Preferably, the pumped well top exit is closed by dismountable high-strength steel sheet, is utilized in the phase of normal operation
The high-strength steel sheet closes the pumped well top exit, enters in the pumped well to avoid silt in water flow, described
Cushion pool turn(a)round, removes the high-strength steel sheet, is easily installed the engineering for pump housing.
Preferably, the diameter of the pumped well is greater than 80cm, meets the requirement that the water pump that draws water sinks down into the sump.
Preferably, it is connected with the dam base drainage well for being located at the two dams dam body bottom below the foundation drainage gallery, made
Infiltration below two dam dam body imports the foundation drainage gallery.
Preferably, the dam base drainage well downstream side is equipped with seepage proof curtain, reduces the infiltration below two dam dam body
Amount.
A kind of application method of runtime not two dam structures of pump drainage turn(a)round interim pump drainage, in the phase of normal operation, institute
Pumped well top exit is stated to close by dismountable high-strength steel sheet；Before cushion pool maintenance starts, the cushion pool
Inside start to draw water, after the dam crest of two dam dam body exposes the surface, removes and close the high-strength of the pumped well top exit
Steel plate is spent, engineering for pump housing is installed in the reserved hole, the water pump that will draw water is sunk down into the sump along the pumped well, is formed
Evacuation system carries out pump drainage to the intracorporal infiltration in the dam two Dao Ba；During cushion pool maintenance, water in the cushion pool
Body is drained, and the water pump that draws water carries out pump drainage to the infiltration in the two dams dam body dam；It, will after the completion of the cushion pool maintenance
Water-filling in the cushion pool takes out the water that draws water in the sump before the dam crest of two dam dam body sinks to the water surface
Pump removes the engineering for pump housing, and is closed the pumped well top exit by the high-strength steel sheet.
Compared with prior art, the present invention having the advantage that
1, without pump drainage within the phase of normal operation, two dam dam bodys, operational management is convenient, saves pump drainage operating cost；
2, two dam dam bodys are greatly facilitated without the electromechanical equipments such as water pump that draw water within the phase of normal operation, two dam dam bodys
Operation maintenance management, and avoid the security risk of the generations such as electromechanical equipment aging, electric leakage；
3, in cushion pool turn(a)round, evacuation system is formed by installing the water pump that draws water, can meet in cushion pool and overhaul dryly
Condition, two dam dam stabilizations are secure；
4, due in two dam dam bodys without permanent evacuation system, electrical equipment in two dam dam bodys, ventilation illumination, fire-fighting,
The designs such as power supply can greatly simplify, and structure is relatively easy, and design difficulty and difficulty of construction are relatively low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of runtime of the invention not two dam structures of pump drainage turn(a)round interim pump drainage.
Each part numbers are as follows in figure:
Two dam dam bodys 1, downstream dam facing 3, seepage proof curtain 4, drainage hole 5, foundation drainage gallery 6, catchment at upstream dam facing 2
Well 7, pumped well 8, reserved hole 9, traffic collector drain 10, dam base drainage well 11.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, by taking black East Germany's engineering as an example, two dam knots of runtime of the invention not pump drainage turn(a)round interim pump drainage
Structure, including be located at cushion pool end two dam dam bodys 1, two dam dam bodys 1 be concrete gravity dam, two dam dam bodys 1 it is upper
Trip dam facing 2 and downstream dam facing 3 offer several drainage holes 5 from top to bottom, and bottom is equipped with horizontal base in two dam dam bodys 1
Plinth collector drain 6 is additionally provided in two dam dam bodys 1 with the traffic collector drain 10 of a level, traffic collector drain 10 and basis
Collector drain 6 is connected to, and the drainage hole 5 of 10 top of traffic collector drain is connected to the traffic collector drain 10, and traffic drains corridor
The drainage hole 5 of 10 lower section of road is connected to foundation drainage gallery 6, is connected with below foundation drainage gallery 6 and is located at two dam dam bodys, 1 bottom
Dam base drainage well 11,11 downstream side of dam base drainage well is equipped with seepage proof curtain 4, is located at foundation drainage gallery 6 in two dam dam bodys 1
Lower section is equipped with sump 7, and sump 7 is connected to foundation drainage gallery 6, is equipped between 1 top of sump 7 and two dam dam bodys perpendicular
Straight pumped well 8, the diameter of pumped well 8 are 80cm, and 8 top exit position of pumped well is equipped with the reserved hole 9 of installation engineering for pump housing,
8 top exit of pumped well is closed by dismountable high-strength steel sheet.
A kind of application method of runtime not two dam structures of pump drainage turn(a)round interim pump drainage, in the phase of normal operation, two
Dam 1 water levels of upstream and downstream of dam body in road is essentially identical, and without any electromechanical equipment in two dam dam bodys 1,8 top exit of pumped well passes through can
The high-strength steel sheet of disassembly is closed, and is entered in pumped well 8 to avoid silt in water flow, without pump drainage in two dam dam bodys 1；In water cushion
Before pool maintenance starts, start to draw water in cushion pool, two dam dam bodys, 1 water levels of upstream and downstream is essentially identical, when the dam of two dam dam bodys 1
After top is exposed the surface, the high-strength steel sheet of closing 8 top exit of pumped well is removed, in reserved 9 installation engineering for pump housing of hole, will be drawn water
Water pump is sunk down into sump 7 along pumped well 8, forms evacuation system, carries out pump drainage to the infiltration in two dam dam bodys, 1 dam；?
During cushion pool overhauls, water body is drained in cushion pool, and two dam dam bodys 1 need to block downstream water, is provided for cushion pool and is examined dryly
Condition is repaired, two dam dam bodys 1 will be acted on by downstream water pressure and silt pressure, and the water pump that draws water is to the infiltration in two dam dam bodys 1
Water carries out pump drainage, it is ensured that two dam dam bodys 1 are stablized；After the completion of cushion pool maintenance, by water-filling in cushion pool, on two dam dam bodys 1
The level of tail water is essentially identical, before the dam crest of two dam dam bodys 1 sinks to the water surface, takes out the water pump that draws water in sump 7, removes
Engineering for pump housing, and closed 1 top exit of pumped well by high-strength steel sheet.
Through calculating, Wu Dongde engineering, two dam structure of the present embodiment can save runtime pump drainage expense about 1,000,000 every year.
The two dam structures and its application method of runtime of the invention not pump drainage turn(a)round interim pump drainage, are operating normally
Phase, two dam dam bodys 1 are interior without pump drainage, and operational management conveniently, saves pump drainage operating cost；And the interior nothing of two dam dam body 1 is drawn water
The electromechanical equipments such as water pump, greatly facilitate the operation maintenance management of two dam dam bodys 1, and avoid electromechanical equipment aging, leakage
The security risk of the generations such as electricity；In cushion pool turn(a)round, evacuation system is formed by installing the water pump that draws water, can be met in cushion pool
Condition is overhauled dryly, and two dam dam bodys 1 are stablized secure；In addition, due in two dam dam bodys 1 without permanent evacuation system, two
The designs such as electrical equipment in dam dam body 1, ventilation illumination, fire-fighting, power supply can greatly simplify, and structure is relatively easy, design difficulty and
Difficulty of construction is relatively low.
Claims (7)
1. a kind of two dam structures of not pump drainage turn(a)round interim pump drainage of runtime, two dams Dao Ba including being located at cushion pool end
Body (1), two dam dam body (1) are concrete gravity dam, it is characterised in that: the upstream dam facing of two dam dam body (1)
(2) and downstream dam facing (3) offers several drainage holes (5) from top to bottom, and two dam dam body (1) interior bottom is equipped with water
Flat foundation drainage gallery (6), the drainage hole (5) are connected to the foundation drainage gallery (6), two dam dam body
(1) it is located at below the foundation drainage gallery (6) in and is equipped with sump (7), the sump (7) and the foundation drainage gallery
(6) it is connected to, vertical pumped well (8) is equipped between the sump (7) and two dam dam body (1) top, it is described to draw water
Well (8) top exit position is equipped with the reserved hole (9) of installation engineering for pump housing.
2. two dam structures of runtime not pump drainage turn(a)round interim pump drainage according to claim 1, it is characterised in that: described
Several horizontal traffic collector drains (10), the traffic collector drain are additionally provided in two dam dam bodys (1) from top to bottom
(10) be connected to the foundation drainage gallery (6), the drainage hole (5) above each traffic collector drain (10) with this
Traffic collector drain (10) connection.
3. two dam structures of runtime according to claim 1 or claim 2 not pump drainage turn(a)round interim pump drainage, it is characterised in that:
Pumped well (8) top exit is closed by dismountable high-strength steel sheet.
4. two dam structures of runtime not pump drainage turn(a)round interim pump drainage according to claim 3, it is characterised in that: described
The diameter of pumped well (8) is greater than 80cm.
5. two dam structures of runtime not pump drainage turn(a)round interim pump drainage according to claim 4, it is characterised in that: described
The dam base drainage well (11) for being located at two dam dam body (1) bottom is connected with below foundation drainage gallery (6).
6. two dam structures of runtime not pump drainage turn(a)round interim pump drainage according to claim 5, it is characterised in that: described
Dam base drainage well (11) downstream side is equipped with seepage proof curtain (4).
7. the utilization side of a kind of claim 4 or 5 or 6 runtimes not two dam structures of pump drainage turn(a)round interim pump drainage
Method, it is characterised in that: in the phase of normal operation, pumped well (8) top exit is closed by dismountable high-strength steel sheet；?
Before the cushion pool maintenance starts, start to draw water in the cushion pool, when the dam crest of two dam dam body (1) exposes the surface
Afterwards, the high-strength steel sheet for closing pumped well (8) top exit is removed, engineering for pump housing is installed in the reserved hole (9), will be taken out
Water water pump is sunk down into the sump (7) along the pumped well (8), evacuation system is formed, to two dam dam body (1) dam
Interior infiltration carries out pump drainage；During cushion pool maintenance, water body is drained in the cushion pool, and the water pump that draws water is to described
Infiltration in two dam dam bodys (1) carries out pump drainage；After the completion of the cushion pool maintenance, by water-filling in the cushion pool, described
The dam crest of two dam dam bodys (1) is sunk to before the water surface, takes out the water pump that draws water in the sump (7), removes the water pump bottom
Seat, and closed the pumped well (1) top exit by the high-strength steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910008195.7A CN109555087B (en) | 2019-01-04 | 2019-01-04 | Two-way dam structure with temporary pumping and draining function in non-pumping and draining maintenance period in operation period and application method of two-way dam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910008195.7A CN109555087B (en) | 2019-01-04 | 2019-01-04 | Two-way dam structure with temporary pumping and draining function in non-pumping and draining maintenance period in operation period and application method of two-way dam structure |
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| Publication Number | Publication Date |
|---|---|
| CN109555087A true CN109555087A (en) | 2019-04-02 |
| CN109555087B CN109555087B (en) | 2024-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593706A (en) * | 2020-05-25 | 2020-08-28 | 中国水利水电第七工程局有限公司 | Two-dam-crossing traffic corridor structure and construction method thereof |
| CN115726309A (en) * | 2022-11-01 | 2023-03-03 | 中国电建集团昆明勘测设计研究院有限公司 | Water pumping and drainage system for maintenance of hydropower station plunge pool and construction method |
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| KR20050092565A (en) * | 2004-03-16 | 2005-09-22 | 농업기반공사 | Basal water drainage structure of groundwater dam without power supply |
| CN101429759A (en) * | 2008-12-12 | 2009-05-13 | 中国葛洲坝集团股份有限公司 | Inverse drainage processing method in high concrete panel rock-fill dam construction period |
| CN201598619U (en) * | 2010-01-22 | 2010-10-06 | 中国水电顾问集团华东勘测设计研究院 | Dam body water draining structure |
| RU2418911C1 (en) * | 2010-05-19 | 2011-05-20 | Василий Петрович Ягин | Method to increase reliability of concrete arc-gravity dam in operation |
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| CN203768881U (en) * | 2014-03-06 | 2014-08-13 | 中国水利水电第七工程局有限公司 | Water seepage draining device for corridors of mountain and dam body |
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| CN107354917A (en) * | 2017-07-28 | 2017-11-17 | 昆明理工大学 | A kind of gravity rock and its construction method |
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| CN111593706A (en) * | 2020-05-25 | 2020-08-28 | 中国水利水电第七工程局有限公司 | Two-dam-crossing traffic corridor structure and construction method thereof |
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