CN104264642A - Drainage tunnel and drainage method for ditch water treatment - Google Patents
Drainage tunnel and drainage method for ditch water treatment Download PDFInfo
- Publication number
- CN104264642A CN104264642A CN201410471931.XA CN201410471931A CN104264642A CN 104264642 A CN104264642 A CN 104264642A CN 201410471931 A CN201410471931 A CN 201410471931A CN 104264642 A CN104264642 A CN 104264642A
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- Prior art keywords
- delivery port
- water outlet
- ditch
- upper horizontal
- water treatment
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/04—Free-flow canals or flumes; Intakes
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a hydropower station engineering construction, and particularly relates to a drainage tunnel for ditch water treatment according to mountain and valley area branch valleys. The drainage tunnel for ditch water treatment eliminates potential safety hazards during main engineering construction and comprises a longitudinal slope, an upper horizontal tunnel and a high water outlet, the upper horizontal tunnel and the high water outlet are formed in the longitudinal slope, a volute chamber, a shaft and a low water outlet are formed in the longitudinal slope, the volute chamber is arranged between the upper horizontal tunnel and the high water outlet and communicated with the upper horizontal tunnel and the high water outlet, the upper end of the shaft is communicated with the volute chamber, the shaft extends downwards and then is communicated with the low water outlet, a detachable temporary plugging body is arranged in the high water outlet, and a vent hole is formed in the upper portion of the temporary plugging body. The longitudinal slope of the drainage tunnel does not need to be set over-steepened after the drainage tunnel for ditch water treatment is provided with the high water outlet and the low water outlet, construction and maintenance are facilitated, and the low water outlet solves the problem of the potential safety hazards of roads and bridges near the water outlet, temporary building facilities and production personnel as step protection of the water outlet of a conventional drainage tunnel is frequently washed out.
Description
Technical field
The present invention relates to a kind of Hydropower Project structure, especially a kind of drainage tunnel for ditch water treatment for high-mountain gorge areas tributary cheuch.In addition, the invention still further relates to a kind of water discharge method, especially a kind of water discharge method for high-mountain gorge areas tributary cheuch
Background technology
When high-mountain gorge areas building Hydropower Project, when when closing on checkdam place and having tributary cheuch to import, consider water power calculation, generally, dam site will be selected in cheuch downstream, due to available construction plant, Jin Ba district and few, and in engineering construction, have a large amount of wastes to need to store up, also need to arrange that all kinds of construction factories etc. face construction and execute, therefore, often utilize the tributary cheuch of dam site upstream side as Dumping Sites, the tributary cheuch of high-mountain gorge areas mostly is perennial flowing water, cutting is comparatively dark and longitudinal gradient is larger, once slag, will all block by cheuch, behind the waste formation place of part excavation in early stage, construction is faced in all kinds of constructions needed for the top layout subsequent construction of slag field execute, larger by cheuch longitudinal gradient, the factor impacts such as slag capacity requirement and reserve-water-level, the major part of arranging in cheuch faces the place that construction is executed and waste is formed will be positioned at more than reservoir level (forming permanent slag field), therefore, before this type of cheuch utilizes, ditch water treatment need be carried out to cheuch, ditch-water processing mode many employings checkdam+drainage tunnel.
At present, general employing one slope drainage tunnel on earth in engineering, the water that namely outfall is discharged directly is become owner of in river along overland flow, and drainage tunnel water inlet is arranged and utilized scope and ditch water treatment checkdam position limitation by cheuch, and water inlet elevation is relatively fixing; Drainage tunnel delivery port arranges elevation and limits by drainage tunnel longitudinal gradient and outlet water level, under the prerequisite being convenient to drainage tunnel self construction and maintenance, strengthens longitudinal gradient as far as possible, is connected as far as possible to make drainage tunnel delivery port with downstream river course water level; As drainage tunnel is arranged by the maximum longitudinal grade meeting construction requirement, when drainage tunnel delivery port elevation is still large apart from the downstream river course discrepancy in elevation, be ensure delivery port safety, delivery port of being everlasting arranges step energy-dissipating installation.See according to engineering operation situation in the past, adopt the drainage tunnel difficulty of construction of above arrangement larger, large and the run duration of delivery port preventive works amount need repeatedly be repaired, before major project retaining, drainage tunnel runs road and the bridge to (or below) near delivery port, faces to build and to execute and producers cause larger potential safety hazard, dodge delivery port layout road (namely detour or wear drainage tunnel outlet under access tunnel) as taked and face construction and execute, will the shortcomings such as the investment increase of whole engineering be caused again.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of drainage tunnel for ditch water treatment eliminating major project construction period potential safety hazard.
The present invention solves the drainage tunnel for ditch water treatment that its technical problem adopts, and comprises longitudinal gradient, is arranged on upper horizontal section in longitudinal gradient and high delivery port, be also provided with volute chamber, vertical shaft and low delivery port in described longitudinal gradient; Described volute chamber is arranged between upper horizontal section and high delivery port, and is communicated with high delivery port with upper horizontal section; The upper end of described vertical shaft is communicated with volute chamber, and described vertical shaft is communicated with low delivery port after downward-extension; Be provided with dismountable temporary plugging body in described high delivery port, the top of described temporary plugging body is provided with air vent.
Further, be also provided with stilling pool slab in described longitudinal gradient, described stilling pool slab is connected to the lower end of vertical shaft, and is positioned under vertical shaft and low delivery port junction.
Further, be also provided with air vent in described longitudinal gradient, the two ends of described air vent are communicated with low delivery port with high delivery port respectively.
Further, the drain port height of described low delivery port is being arranged between main river high water level in flood season and ordinary water level.
Further, described longitudinal gradient is provided with road in field, in described field, road is positioned on low delivery port.
Another technical problem that will solve of the present invention eliminates the water discharge method for ditch water treatment of major project construction period potential safety hazard.
Water discharge method for ditch water treatment provided by the invention, adopts the above-mentioned drainage tunnel for ditch water treatment,
Before reservoir major project completes, utilize temporary plugging body shutoff height delivery port, tributary ditch-water, by after upper horizontal section, volute chamber and vertical shaft, enters main river from low delivery port;
After reservoir major project completes retaining, remove temporary plugging body, ditch-water is drained in reservoir by upper horizontal section, volute chamber, high delivery port.
The invention has the beneficial effects as follows: after ditch water treatment drainage tunnel arranges high-low water outlet, drainage tunnel longitudinal gradient need not arrange suddenly, constructability and maintenance.Low delivery port meets the ditch-water ejectment of engineering construction phase, arrange low delivery port to solve the protection of conventional drainage hole delivery port step and often destroyed by rush of water, to the road of (or below) near delivery port and bridge, face to build and execute and potential safety hazard that producers cause, such as Flood may destroy by rush of water step protection, and then jeopardize road and bridge, face construction and the safety such as to execute, plateau or cold district may produce atomization winter, cause icy on road; Cost saving, namely cancelling excavation and step preventive works amount, saving are detoured access tunnel engineering quantity.Arrange after high delivery port solves reservoir filling, easily there is silting and not possessing the drawback of maintenance in low delivery port, meets ditch-water ejectment and the water power calculation requirement of engineering permanent phase.Ditch water treatment drainage tunnel arranges the security of operation that high-low water outlet can ensure construction period and permanent phase.
Accompanying drawing explanation
Fig. 1 is sectional drawing of the present invention.
Fig. 2 is the sectional drawing of height delivery port part of the present invention.
Fig. 3 is the sectional drawing of the low delivery port part of the present invention.
Component, position and numbering in figure: road 8, air vent 9, stilling pool slab air vent 10 in upper horizontal section 1, volute chamber 2, high delivery port 3, temporary plugging body 4, vertical shaft 5, stilling pool slab 6, low delivery port 7, field.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the present invention includes longitudinal gradient, be arranged on upper horizontal section 1 in longitudinal gradient and high delivery port 3, in described longitudinal gradient, be also provided with volute chamber 2, vertical shaft 5 and low delivery port; Described volute chamber 2 is arranged between upper horizontal section 1 and high delivery port 3, and is communicated with high delivery port 3 with upper horizontal section 1; The upper end of described vertical shaft 5 is communicated with volute chamber 2, and described vertical shaft 5 is communicated with low delivery port 7 after downward-extension; Be provided with dismountable temporary plugging body 4 in described high delivery port 3, the top of described temporary plugging body 4 is provided with air vent 9.Temporary plugging body 4 is mainly in order to prevent the water in volute chamber 2 from discharging from high delivery port 3.
Said structure can be constructed in the following ways: the upper horizontal section 1 of drainage tunnel, high delivery port 3 and low delivery port 7 hole section all adopt that conventional method is excavated, lining cutting, volute chamber 2 and high delivery port 3 are as the passage of construction volute chamber 2, vertical shaft 5 adopt raise boring machine first excavate pilot shaft, after the mode that digs from top to bottom excavate, concrete is put in storage by vacuum pouring tube through high delivery port 3 hopper, slipform casting.After drainage tunnel is all constructed and terminated, carry out temporary plugging to high delivery port 3, volute chamber air vent 9 is reserved at temporary plugging body 4 top, after reservoir filling, then removes the temporary plugging body 4 of high delivery port 3.
Said structure specifically adopts following manner to run: before reservoir major project completes, and utilizes temporary plugging body 4 shutoff height delivery port 3, and tributary ditch-water, by after upper horizontal section 1, volute chamber 2 and vertical shaft 5, enters main river from low delivery port 7; After reservoir major project completes retaining, remove temporary plugging body 4, ditch-water is drained in reservoir by upper horizontal section 1, volute chamber 2, high delivery port 3.
Different from traditional slope drainage tunnel on earth, drainage tunnel of the present invention is provided with high delivery port 3 and low delivery port 3, before major project completes, low delivery port 3 is utilized to discharge ditch-water, such benefit is exactly, water is not along vertical hillslope overland flow, and the impact of such current would not have influence on road, the bridge of longitudinal gradient bottom, face construction executes and producers; And at this moment, high delivery port 3 is by temporary plugging body 4 shutoff, it can only discharge the air in volute chamber 2 by air vent 9, and can not draining, and high delivery port 3 can help by discharging air to form eddy flow in volute chamber 2 at this moment, reaches good energy dissipating effect.The present invention with substantially increasing the extra structure such as vertical shaft 5, low delivery port 7, but but eliminates the Step Energy Dissipation facility in conventional discharge hole, also without the need to strengthening longitudinal gradient.Such cost is less than traditional drainage tunnel on the contrary.After reservoir major project completes retaining, remove temporary plugging body 4, ditch-water is drained in reservoir by upper horizontal section 1, volute chamber 2, high delivery port 3.And the structure such as low delivery port 3 and vertical shaft 5 is just submerged in water, automatically discard.So perfectly solve major project construct the ditch-water emission request of front and back.
In order to better energy dissipating, avoid vertical shaft 5 and low delivery port 7 to be washed out, as shown in Figure 1, be also provided with stilling pool slab 6 in described longitudinal gradient, described stilling pool slab 6 is connected to the lower end of vertical shaft 5, and is positioned under vertical shaft 5 and low delivery port 7 junction.
For the ease of flow, as shown in Figure 1, be also provided with stilling pool slab air vent 10 in described longitudinal gradient, the two ends of described stilling pool slab air vent 10 are communicated with low delivery port 7 with high delivery port 3 respectively.Stilling pool slab air vent 10 can discharge by high delivery port 3 air disappeared in vertical 6 and low delivery port 7, is conducive to current.
Concrete, the drain port height of described low delivery port 7 is being arranged between main river high water level in flood season and ordinary water level.
As Fig. 1, after employing the present invention, because low delivery port 7 is connected directly to main river, therefore the road bottom longitudinal gradient, bridge, face construction and to execute and producers all can arrange on low delivery port 7, to avoid by water impact, longitudinal gradient such as, be provided with road 8 in field, in described field, road 8 is positioned on low delivery port 7.
Drainage tunnel longitudinal gradient, upper horizontal section 1, high delivery port 3 and low delivery port 7 are by meeting self construction and maintenance requirement setting.Closing on the end of upper horizontal section 1, rock more complete hole section arranges volute chamber 2, vertical shaft 5 and stilling pool slab 6 energy dissipating, stilling pool slab 6 connects low delivery port 7, low delivery port 7 is connected with the natural river course before reservoir filling, meet the ditch-water ejectment of Engineering in Construction Period, at reservoir normal retaining elevation, high delivery port 3 is set, high delivery port 3 and volute chamber 2, upper horizontal section 1 connects, high delivery port 3 construction period is as working tunnel, drainage tunnel construction terminates to carry out temporary plugging to high delivery port 3 afterwards, and reserved air vent 9, ditch-water is by upper horizontal section 1, volute chamber 2, vertical shaft 5, stilling pool slab 6, the ejectment of low delivery port 7, after reservoir filling, low delivery port 7 floods under water, easy generation silting, do not possess maintenance condition, now remove the temporary plugging body 4 in high delivery port 3, ditch-water is by upper horizontal section 1, volute chamber 2, high delivery port 3 drains in storehouse, low delivery port 7 is discarded voluntarily, upper horizontal section 1 is connected with reservoir level.
Claims (6)
1. for the drainage tunnel of ditch water treatment, comprise longitudinal gradient, be arranged on upper horizontal section (1) in longitudinal gradient and high delivery port (3), it is characterized in that: in described longitudinal gradient, be also provided with volute chamber (2), vertical shaft (5) and low delivery port (7); Described volute chamber (2) is arranged between upper horizontal section (1) and high delivery port (3), and is communicated with high delivery port (3) with upper horizontal section (1); The upper end of described vertical shaft (5) is communicated with volute chamber (2), and described vertical shaft (5) is communicated with low delivery port (7) after downward-extension; Be provided with dismountable temporary plugging body (4) in described high delivery port (3), the top of described temporary plugging body (4) is provided with air vent (9).
2. as claimed in claim 1 for the drainage tunnel of ditch water treatment, it is characterized in that: in described longitudinal gradient, be also provided with stilling pool slab (6), described stilling pool slab (6) is connected to the lower end of vertical shaft (5), and is positioned under vertical shaft (5) and low delivery port (7) junction.
3. as claimed in claim 1 for the drainage tunnel of ditch water treatment, it is characterized in that: be also provided with stilling pool slab air vent (10) in described longitudinal gradient, the two ends of described stilling pool slab air vent (10) are communicated with low delivery port (7) with high delivery port (3) respectively.
4., as claimed in claim 1 for the drainage tunnel of ditch water treatment, it is characterized in that: the drain port height of described low delivery port (7) is being arranged between main river high water level in flood season and ordinary water level.
5. the drainage tunnel for ditch water treatment as described in claim as arbitrary in Claims 1-4, is characterized in that: described longitudinal gradient is provided with road in field (8), and in described field, road (8) is positioned on low delivery port (7).
6. for the water discharge method of ditch water treatment, it is characterized in that: adopt the drainage tunnel for ditch water treatment as described in claim as arbitrary in claim 1 to 5;
Before reservoir major project completes, utilize temporary plugging body (4) shutoff height delivery port (3), tributary ditch-water, by after upper horizontal section (1), volute chamber (2) and vertical shaft (5), enters main river from low delivery port (7);
After reservoir major project completes retaining, remove temporary plugging body (4), ditch-water is drained in reservoir by upper horizontal section (1), volute chamber (2), high delivery port (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471931.XA CN104264642B (en) | 2014-09-16 | 2014-09-16 | The scupper processed for ditch-water and water discharge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471931.XA CN104264642B (en) | 2014-09-16 | 2014-09-16 | The scupper processed for ditch-water and water discharge method |
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| Publication Number | Publication Date |
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| CN104264642A true CN104264642A (en) | 2015-01-07 |
| CN104264642B CN104264642B (en) | 2016-08-31 |
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| CN201410471931.XA Active CN104264642B (en) | 2014-09-16 | 2014-09-16 | The scupper processed for ditch-water and water discharge method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369784A (en) * | 2015-11-27 | 2016-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Drainage hole structure and drainage method for ditchwater treatment |
| CN105421296A (en) * | 2015-12-29 | 2016-03-23 | 中国电建集团成都勘测设计研究院有限公司 | Drainage tunnel for ditch water treatment and maintaining method |
| CN110258476A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | High-mountain gorge areas power station ditch water process scupper structure |
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| CN204080759U (en) * | 2014-09-16 | 2015-01-07 | 中国电建集团成都勘测设计研究院有限公司 | Ditch water treatment drainage tunnel |
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| CN101294377A (en) * | 2008-06-20 | 2008-10-29 | 四川大学 | Rotational flow silo equipped with air entrainment ridge |
| CN101881019A (en) * | 2010-07-29 | 2010-11-10 | 中国水利水电科学研究院 | High tailrace level vortex flow flood discharge tunnel and exhaust method of flood discharge tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105369784A (en) * | 2015-11-27 | 2016-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Drainage hole structure and drainage method for ditchwater treatment |
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| CN105421296A (en) * | 2015-12-29 | 2016-03-23 | 中国电建集团成都勘测设计研究院有限公司 | Drainage tunnel for ditch water treatment and maintaining method |
| CN110258476A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | High-mountain gorge areas power station ditch water process scupper structure |
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| CN104264642B (en) | 2016-08-31 |
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