JPS57123315A - Sand scouring gate - Google Patents
Sand scouring gateInfo
- Publication number
- JPS57123315A JPS57123315A JP775581A JP775581A JPS57123315A JP S57123315 A JPS57123315 A JP S57123315A JP 775581 A JP775581 A JP 775581A JP 775581 A JP775581 A JP 775581A JP S57123315 A JPS57123315 A JP S57123315A
- Authority
- JP
- Japan
- Prior art keywords
- waterway
- sand
- bypassed
- gravel
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
Abstract
PURPOSE:To reduce damage by abrasion to the sand-flash waterway of a dam by stirring and floating sand and gravel damaging the bottom floor of the waterway by a method in which a pair of bypassed waterways are provided and their openings are directed at the symmetrically crossing angle on the upstream side. CONSTITUTION:A bypass gate door 9' and a cut-off gate door 7' are opened, and then a sand flash gate door 5' is opened, whereupon water stored flows out with a vigorous power by its pressure through the sand flash waterway 4 to the outside of the dam. The bypassed flowing water passing through a bypass waterway 10 is more accelerated by a negative pressure produced by the main flowing water passing through the waterway 4 in the side wall part of the waterway 4 and spouts crossly upwards to the main flowing water from the opening part. The jet stream of water from the lower opening of the openings of the paired bypassed waterways blows up sand and gravel flowing down on the bottom floor of the waterway 4, and also the jet stream of water from the upper opening stirs the sand and gravel blown up, whereby diffusing and floating them in the main flowing water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP775581A JPS57123315A (en) | 1981-01-20 | 1981-01-20 | Sand scouring gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP775581A JPS57123315A (en) | 1981-01-20 | 1981-01-20 | Sand scouring gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57123315A true JPS57123315A (en) | 1982-07-31 |
Family
ID=11674504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP775581A Pending JPS57123315A (en) | 1981-01-20 | 1981-01-20 | Sand scouring gate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57123315A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009012141A (en) * | 2007-07-06 | 2009-01-22 | Nakanishi Metal Works Co Ltd | Hanging carriage truck with lifting function, and hanging stand |
| US7896324B2 (en) | 2007-07-02 | 2011-03-01 | Nakanishi Metal Works Co., Ltd. | Transfer car having lifting and lowering function and turning function and automobile assembly line using the same |
| CN103266584A (en) * | 2013-06-05 | 2013-08-28 | 中国水利水电第七工程局有限公司 | Novel water conservancy project energy dissipater structure |
| CN110374062A (en) * | 2019-06-06 | 2019-10-25 | 赵晓霞 | A kind of compound bottom gate with sand discharge function |
-
1981
- 1981-01-20 JP JP775581A patent/JPS57123315A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896324B2 (en) | 2007-07-02 | 2011-03-01 | Nakanishi Metal Works Co., Ltd. | Transfer car having lifting and lowering function and turning function and automobile assembly line using the same |
| JP2009012141A (en) * | 2007-07-06 | 2009-01-22 | Nakanishi Metal Works Co Ltd | Hanging carriage truck with lifting function, and hanging stand |
| CN103266584A (en) * | 2013-06-05 | 2013-08-28 | 中国水利水电第七工程局有限公司 | Novel water conservancy project energy dissipater structure |
| CN103266584B (en) * | 2013-06-05 | 2015-08-19 | 中国水利水电第七工程局有限公司 | A kind of hydraulic engineering energy dissipating construction |
| CN110374062A (en) * | 2019-06-06 | 2019-10-25 | 赵晓霞 | A kind of compound bottom gate with sand discharge function |
| CN110374062B (en) * | 2019-06-06 | 2021-05-25 | 赵永宪 | Compound bottom hole gate with sand discharging function |
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