CN102797242A - Arrangement structure of overflow surface holes of arch dam - Google Patents
Arrangement structure of overflow surface holes of arch dam Download PDFInfo
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- CN102797242A CN102797242A CN2012103174491A CN201210317449A CN102797242A CN 102797242 A CN102797242 A CN 102797242A CN 2012103174491 A CN2012103174491 A CN 2012103174491A CN 201210317449 A CN201210317449 A CN 201210317449A CN 102797242 A CN102797242 A CN 102797242A
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Abstract
The invention discloses an arrangement structure of overflow surface holes of an arch dam. The arrangement structure comprises two middle piers arranged on the overflow surface of the arch dam at an interval, and two side piers arranged on the outer sides of the two middle piers at an interval respectively; each of an overflow middle hole and two overflow side holes consists an overflow section and an outlet section; the side walls of the side piers, positioned at the outlet sections of the overflow side holes are inclined for 4-5 degrees towards the corresponding middle lines of the side piers from the upstream to the downstream; the side walls of the two middle piers , positioned at the outlet section of the overflow middle hole, are inclined for 7-8 degrees towards the corresponding middle lines of the middle piers from the upstream to the downstream; and the overflow surface structure of each overflow side hole is as follows from the upstream to the downstream: the curve of a weir surface is a power curve, the upstream of the origin of the power curve is an elliptic curve, the power curve is tangent to a straight-line segment inclined downwards, and the lower end of the straight-line segment extends to the outlet tail end of the overflow side holes and is connected with a horizontal bucklet lip through an arc transition section. On the premise of meeting energy dissipation of outlets of the overflow surface holes of the arm dam, the arrangement structure can alleviate or avoid washout on a downstream side slope or sidewall.
Description
Technical field
The present invention relates to block the water bridge dam in the water conservancy construction, especially relate to the arrangement in arch dam weir meter hole.
Background technology
In the arch dam engineering, the dam body flood discharge is the most economic flood discharge mode, adopts this flood discharge mode mostly for the arch dam of on great rivers, arranging.At present; Mostly the flood discharge arrangement form of dam body is " table hole+deep hole " or " table hole+mesopore+bottom outlet "; The also energy dissipating modes that adopt horizontal proliferation or longitudinal stretching of the outlet energy dissipating in each aperture in the above-mentioned arrangement form still, run into the riverbed when narrower more; The energy dissipating mode of table hole horizontal proliferation will cause cushion pool abutment wall under slope, underwater bed bank or the dam is produced certain washing away.
Summary of the invention
The object of the invention is to provide the arrangement in a kind of arch dam weir meter hole, realizes both having satisfied lateral opening outlet energy dissipating, suitable more again orographic condition.
For realizing above-mentioned purpose, the present invention takes following technical proposals:
The arrangement in arch dam weir meter according to the invention hole comprises Liang Zhongdun that is arranged at interval on the arch dam spillwag chute and two abutment piers that are arranged on the pier outside in said two respectively at interval; Constitute the overflow mesopore in two between the pier, in two between pier and the corresponding abutment pier formation two overflows lateral opening; Said overflow mesopore, the lateral opening spillwag chute of two overflows constitute by overflow segment and outlet section; The pier sidewall that is arranged in the lateral opening outlet section of said overflow from the upper reaches to downstream direction 7-8 ° of setting of pier center line inclination to correspondence; The abutment pier sidewall that is positioned at the lateral opening outlet section of said overflow from the upper reaches to downstream direction 4-5 ° of setting of abutment pier center line inclination to correspondence; The two pier sidewalls that are arranged in said overflow mesopore outlet section from the upper reaches to downstream direction 7-8 ° of setting of pier center line inclination to correspondence; The lateral opening spillwag chute structure of said two overflows is to downstream direction from the upper reaches: the weir surface curve is a power curve; The initial point upper reaches of power curve are elliptic curve; Power curve and downward-sloping straightway are tangent; It is terminal that the lower end of said straightway extends to the lateral opening outlet of overflow, and be connected with horizontal bucket lip through the arc transition section.
Said downward-sloping straightway angle is 30 °, and it is terminal that the lower end of said straightway extends the lateral opening outlet of overflow, and is connected with horizontal bucket lip through radius R=5m, central angle=30 ° arc transition section.
The invention has the advantages that the lateral opening structure of said overflow is set to the arrangement form of current expanding and contraction phase combination; The longitudinal stretching and the horizontal proliferation of current are effectively combined; Therefore; Under the prerequisite that satisfies the energy dissipating of arch dam weir meter hole exits, alleviate or avoided the washing away of downstream side slope or abutment wall improved the application life of downstream side slope or abutment wall greatly.
Description of drawings
Fig. 1 is an arch dam table of the present invention hole arrangement diagram.
Fig. 2 is lateral opening spillwag chute sectional drawing.
The specific embodiment
Like Fig. 1, shown in 2, of the present invention
The arrangement in arch dam weir meter of the present invention hole comprises two abutment piers 3,4 that are arranged at interval pier 1,2 in two on the arch dam spillwag chute and are arranged on pier 1,2 outsides in said two respectively at interval; Pier 1 in two, constitute the overflow mesopore between 2, pier 1,2 and corresponding abutment pier 3 in two, between 4 formation two overflows lateral opening; Said overflow mesopore, the lateral opening spillwag chute of two overflows constitute by overflow segment 5 and outlet section 6; Pier 1 sidewall that is arranged in the lateral opening outlet section 6 of said overflow from the upper reaches to downstream direction to the 7 ° of settings of tilting of the pier center line 7 of correspondence, that is: the angle of flare of the lateral opening outlet section 6 of overflow is 7 °; Abutment pier 3 sidewalls that are positioned at the lateral opening outlet section 6 of said overflow from the upper reaches to downstream direction to the 4 ° of settings of tilting of the abutment pier center line 8 of correspondence, that is: the angle of throat of the lateral opening outlet section 6 of overflow is 4 °; Therefore, the angle of throat of the lateral opening outlet section 6 of overflow has guaranteed that less than angle of flare the lateral opening outlet current of overflow are to be diffused as the master.Two piers, 1,2 sidewalls that are arranged in said overflow mesopore outlet section from the upper reaches to downstream direction to the 7 ° of settings of tilting of the pier center line 7,9 of correspondence; As shown in Figure 2; The lateral opening spillwag chute structure of said two overflows is to downstream direction from the upper reaches: the weir surface curve is a power curve 10; The initial point upper reaches of power curve 10 are elliptic curve 11, and power curve 10 is tangent with downward-sloping 30 ° straightway 12, and it is terminal that the lower end of said straightway 12 extends to the lateral opening outlet of overflow; And be connected with horizontal bucket lip 14 through radius R=5m, central angle=30 ° arc transition section 13; Therefore, impel the lateral opening outlet current of overflow to provoke, outlet is chosen current with flat slope.Because the setting of arc transition section 13; Make that the energy dissipating of outlet is main to fall the stream energy dissipating; It is penetrated apart from the combination model test result and sees, the basic satisfied hydraulic elements
that falls the stream energy dissipating.
In the formula:
---bucket lip to the riverbed discrepancy in elevation, m.
Claims (2)
1. the arrangement in an arch dam weir meter hole comprises Liang Zhongdun (1,2) that is arranged at interval on the arch dam spillwag chute and two abutment piers (3,4) that are arranged on pier in said two (1, the 2) outside respectively at interval; Constitute the overflow mesopore between the pier in two (1,2), formation two overflows are lateral opening between Liang Zhongdun (1,2) and the corresponding abutment pier (3,4); Said overflow mesopore, the lateral opening spillwag chute of two overflows constitute by overflow segment (5) and outlet section (6); It is characterized in that: pier (1) sidewall that is arranged in the lateral opening outlet section of said overflow (6) from the upper reaches to downstream direction to pier center line (7) the inclination 7-8 of correspondence ° setting; Abutment pier (3) sidewall that is positioned at the lateral opening outlet section of said overflow (6) from the upper reaches to downstream direction to abutment pier center line (8) the inclination 4-5 of correspondence ° setting; Liang Zhongdun (1, the 2) sidewall that is arranged in said overflow mesopore outlet section from the upper reaches to pier center line (7,9) the inclination 7-8 ° setting of downstream direction to correspondence; The lateral opening spillwag chute structure of said two overflows is to downstream direction from the upper reaches: the weir surface curve is power curve (10); The initial point upper reaches of power curve (10) are elliptic curve (11); Power curve (10) is tangent with downward-sloping straightway (12); It is terminal that the lower end of said straightway (12) extends to the lateral opening outlet of overflow, and be connected with horizontal bucket lip (14) through arc transition section (13).
2. according to the arrangement in the said arch dam weir meter of claim 1 hole; It is characterized in that: said downward-sloping straightway (12) angle is 30 °; It is terminal that the lower end of said straightway (12) extends the lateral opening outlet of overflow, and be connected with horizontal bucket lip (14) through radius R=5m, central angle=30 ° arc transition section (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317449.1A CN102797242B (en) | 2012-08-31 | 2012-08-31 | Arrangement structure of overflow surface holes of arch dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317449.1A CN102797242B (en) | 2012-08-31 | 2012-08-31 | Arrangement structure of overflow surface holes of arch dam |
Publications (2)
| Publication Number | Publication Date |
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| CN102797242A true CN102797242A (en) | 2012-11-28 |
| CN102797242B CN102797242B (en) | 2014-07-16 |
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| CN201210317449.1A Active CN102797242B (en) | 2012-08-31 | 2012-08-31 | Arrangement structure of overflow surface holes of arch dam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190711A (en) * | 2017-04-28 | 2017-09-22 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN111501682A (en) * | 2020-05-18 | 2020-08-07 | 中国电建集团华东勘测设计研究院有限公司 | Flood discharge orifice multilayer asymmetric arrangement method suitable for high arch dam |
| CN113481944A (en) * | 2021-07-26 | 2021-10-08 | 中国三峡建工(集团)有限公司 | Dam surface hole connection girder supporting structure and construction method |
| CN113481928A (en) * | 2021-07-27 | 2021-10-08 | 中国三峡建工(集团)有限公司 | High-water-level water storage method for construction period of high-dam large reservoir and at initial operation stage |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202718074U (en) * | 2012-08-31 | 2013-02-06 | 黄河勘测规划设计有限公司 | Arranging structure of arch dam spillover surface outlet |
-
2012
- 2012-08-31 CN CN201210317449.1A patent/CN102797242B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202718074U (en) * | 2012-08-31 | 2013-02-06 | 黄河勘测规划设计有限公司 | Arranging structure of arch dam spillover surface outlet |
Non-Patent Citations (1)
| Title |
|---|
| 鲍倩等: "顺溪拱坝溢流消能布置模型试验研究", 《人民长江》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190711A (en) * | 2017-04-28 | 2017-09-22 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN107190711B (en) * | 2017-04-28 | 2019-04-12 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN111501682A (en) * | 2020-05-18 | 2020-08-07 | 中国电建集团华东勘测设计研究院有限公司 | Flood discharge orifice multilayer asymmetric arrangement method suitable for high arch dam |
| CN113481944A (en) * | 2021-07-26 | 2021-10-08 | 中国三峡建工(集团)有限公司 | Dam surface hole connection girder supporting structure and construction method |
| CN113481944B (en) * | 2021-07-26 | 2022-07-15 | 中国三峡建工(集团)有限公司 | Construction method of dam surface hole connection girder supporting structure |
| CN113481928A (en) * | 2021-07-27 | 2021-10-08 | 中国三峡建工(集团)有限公司 | High-water-level water storage method for construction period of high-dam large reservoir and at initial operation stage |
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| Publication number | Publication date |
|---|---|
| CN102797242B (en) | 2014-07-16 |
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Address after: 450003 Jinshui Road 109, Zhengzhou City, Henan Province Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450003 Jinshui Road 109, Zhengzhou City, Henan Province Patentee before: Yellow River Engineering Consulting Co., Ltd. |