CN205636668U - Keep off and flow board cut -off equipment - Google Patents
Keep off and flow board cut -off equipment Download PDFInfo
- Publication number
- CN205636668U CN205636668U CN201620515746.0U CN201620515746U CN205636668U CN 205636668 U CN205636668 U CN 205636668U CN 201620515746 U CN201620515746 U CN 201620515746U CN 205636668 U CN205636668 U CN 205636668U
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- China
- Prior art keywords
- flow
- stopping plate
- longkou
- damming
- equipment
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Abstract
The utility model provides a keep off and flow board cut -off equipment is equipped with in the low reaches of the longkou of damming and keep off flows the board, keeps off the width that flows the board no longer than the width of the longkou of damming, keeps off the low reaches of flowing the board and sets firmly in subfluvial free bearing articulatedly, is equipped with hydraulic jack keeping off the below of flowing the board. Fold when the longkou of damming and be close the scope that flows the board of keeping off, start hydraulic jack, prop up to keep off and flow the board, through above step reduce the to dam velocity of flow and the drop of longkou. Fender through setting up in the longkou low reaches of damming flows the plate structure, in the work progress that dams of superior difficulty, and not only effective loss that prevents the material that dams, the drop that dams of the longkou that reduces to dam reduces the velocity of flow of the longkou of damming, reduces the degree of difficulty of damming, improves the safety and the success rate of damming moreover, practices thrift the expense of damming simultaneously.
Description
Technical field
This utility model relates to Hydraulic and Hydro-Power Engineering river closure construction field, particularly a kind of flow-stopping plate cut-off equipment.
Background technology
In Hydraulic and Hydro-Power Engineering, the phase that is generally divided into dams and the second phase dams, and often built and led before a phase dams
Lumen canal, diversion canal typically uses stone masonry river bottom protection bank protection, or concrete river bottom protection bank protection.After diversion canal has been built,
The phase that carries out again dams, and treats that the construction of foundation ditch Inner guide hole is complete, and the beginning second phase dams.The highly difficult second phase is dammed, is cutting
Stream Longkou closes up period and requires that intensity of jettisoninging is the highest, needs the artificial cut-off material quantity used many.Of the prior art dam
Construction method is jettisoning in Longkou of damming stone or artificial block, such as concrete blocks, concrete tetrahedron, galvanized wire cage, bamboo
The cut-off materials such as cage, Liu Shi pillow and string stone intercept current, force river to be let out under diversion structure.Of the prior art damming executes
Work method not only cost is high, and difficulty of construction is big, and the cut-off material turnover rate within this period is big, and dike dike head is at current in an opposite direction
Effect is lower easily caves in, and threatens workmen and the safety of plant equipment, and potential safety hazard is big.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of flow-stopping plate cut-off equipment, it is possible to reduce Longkou of damming
Flow rate of water flow, drop and unit stream energy, reduce Longkou of damming and close up the turnover rate of period cut-off material, improve river closure construction
Economy, and ensure safety of damming, reduce construction risk.
For solving above-mentioned technical problem, this utility model be the technical scheme is that a kind of flow-stopping plate cut-off equipment,
The dam downstream of Longkou is provided with flow-stopping plate, and the width of flow-stopping plate is less than the width of Longkou of damming, and the downstream of flow-stopping plate is with fixed
Free bearing in river bed is hinged, is provided with hydraulic jack in the lower section of flow-stopping plate, and one end of hydraulic jack is hinged with flow-stopping plate, separately
One end is connected by free bearing with river bed.
Longkou of damming at dike in an opposite direction and bank protection or is led between wall, or dams Longkou between dike in an opposite direction；
When flow-stopping plate is propped up by hydraulic jack, flow-stopping plate height is the 0.1 ~ 0.8 of dike in an opposite direction.
Bank protection or lead wall and in an opposite direction dike be xoncrete structure or stone masonry structure.
Described river bed is xoncrete structure or stone masonry structure.
Described flow-stopping plate is positioned at the baffle hole of river bed, when flow-stopping plate is in the state put down, the upper surface of flow-stopping plate
Concordant with river bed.
Described flow-stopping plate thickness is 10cm ~ 20cm.
Described flow-stopping plate is steel plate.
Described flow-stopping plate is made up of one or more, and hydraulic jack is one or more accordingly.
A kind of use above-mentioned flow-stopping plate cut-off equipment to carry out the method dammed, comprise the following steps:
When Longkou of damming is brought together into the scope close to flow-stopping plate, start hydraulic jack, prop up flow-stopping plate；
Flow velocity and the drop of Longkou of damming is reduced by above step.
When building diversion canal, reserve baffle hole, by hydraulic jack and gear at the dam downstream position of Longkou of second phase
Stream plate is embedded in baffle hole.
A kind of flow-stopping plate cut-off equipment that this utility model provides, is hardened by the baffle arranged in downstream, Longkou of damming
Structure, during highly difficult river closure construction, the most effectively stops the loss of cut-off material, reduce Longkou of damming dam to fall
Difference, reduces the flow velocity of Longkou of damming, and reduces closure difficulty, and improves the safety and success rate dammed, and saving simultaneously is dammed
Expense.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is plan structure schematic diagram of the present utility model.
Fig. 2 is this utility model side-looking structural representation when not damming.
Fig. 3 is this utility model side-looking structural representation when damming.
In figure: bank protection or lead wall 1, in an opposite direction dike 2, flow-stopping plate 3, hydraulic jack 4, river bed 5, water surface curve 6, Longkou 7 of damming, gear
Stream hole 8, flow-stopping plate height H.
Detailed description of the invention
Embodiment 1:
In Fig. 1 ~ 3, a kind of flow-stopping plate cut-off equipment, it is provided with flow-stopping plate 3, the width of flow-stopping plate 3 in the downstream of Longkou 7 of damming
Degree is less than the width of Longkou 7 of damming, and the downstream of flow-stopping plate 3 is hinged with the free bearing being fixedly arranged on river bed 5, in the lower section of flow-stopping plate 3
Being provided with hydraulic jack 4, one end of hydraulic jack 4 is hinged with flow-stopping plate 3, and the other end is connected by free bearing with river bed 5.Thus
Structure, during damming, utilizes hydraulic jack 4 to be propped up by flow-stopping plate 3, in advance the high upper pond level of harmony, it is possible to reduces and cuts
The flow velocity of stream Longkou 7.
Preferably in scheme such as Fig. 1, Longkou 7 of damming at dike 2 in an opposite direction and bank protection or is led between wall 1, and the most unidirectional dike 2 in an opposite direction is tied
Structure, or Longkou 7 of damming is between dike 2 in an opposite direction, the most two-way dike 2 structure in an opposite direction；
Preferably in scheme such as Fig. 3, when flow-stopping plate 3 is propped up by hydraulic jack 4, flow-stopping plate height H is dike 2 in an opposite direction
0.1~0.8.Thus structure, by harmony height upper pond level, to reduce the flow velocity of Longkou 7 of damming.
Preferably in scheme, bank protection or lead wall 1 and in an opposite direction dike 2 be xoncrete structure or stone masonry structure.
Preferably in scheme, described river bed 5 is xoncrete structure or stone masonry structure.
Preferably in scheme such as Fig. 2, described flow-stopping plate 3 is positioned at the baffle hole 8 of river bed 5, puts down when flow-stopping plate 3 is in
State, the upper surface of flow-stopping plate 3 is concordant with river bed 5.Thus structure, does not interferes with current, does not results in silt particle yet at ordinary times
Alluvial.
Described flow-stopping plate 3 thickness is 10cm ~ 20cm.
Described flow-stopping plate 3 is steel plate.
Described flow-stopping plate 3 is made up of one or more, and hydraulic jack 4 is one or more accordingly.Thus structure,
To reduce the installation difficulty of flow-stopping plate 3.
Embodiment 2:
On the basis of embodiment 1, a kind of above-mentioned flow-stopping plate cut-off equipment is used to carry out the method dammed, including following
Step:
When damming, Longkou 7 is brought together into the scope close to flow-stopping plate 3, and operator on the coast, start hydraulic jack 4, support
Play flow-stopping plate 3；
Flow velocity and the drop of Longkou 7 of damming is reduced by above step.
Preferably in scheme, when building diversion canal, reserve baffle hole 8 at the dam downstream position of Longkou 7 of second phase, will
Hydraulic jack 4 and flow-stopping plate 3 are embedded in baffle hole 8.
Embodiment 3:
On the basis of embodiment 1 ~ 2, certain power station uses stage diversion, removes a phase cofferdam, blocks diversion canal.Dam
Dike is unidirectional attacks and occupies to use list to clash, and reserved Longkou 7 width that dams is 20 meters, and river closure design flow is 1300m3/ s, dike 2 height is in an opposite direction
5m, width 7m, Longkou of damming is arranged in the left side of open channel.Longkou of damming is when being 20m, and closure drop is 1.25m, and dam Longkou stream
Amount 206.2m3/ s, mean flow rate is 2.75m/s.Flow-stopping plate 3 overall width is 20m, and thickness is 20cm, flow-stopping plate height H is 5 ×
0.2=1m。
Result of the test: when Longkou width is 20m, starts Longkou and dams, start hydraulic jack 4, prop up flow-stopping plate 3,
Now clashing dike 2 drop front and back is 1.4m, Longkou flow 89.42m3/ s, discharge per unit width is 4.47m3/ s, Longkou mean flow rate is
1.2m/s.Longkou 7 each stage of damming uses current capacity contrast's table before and after steel plate door as follows:
After flow-stopping plate 3 rises, Longkou 7 cross-section of river that dams also greatly reduces, and defines a Thin Rectangular in Longkou 7 of damming
Wall weir, this weir shifts to an earlier date harmony height upper pond level, thus increases the inflow-rate of water turbine at a phase gate, reduces the Longkou stream that dams
Amount, the Longkou flow velocity that dams is far smaller than flow velocity when not having flow-stopping plate 3.Owing to only Longkou of damming need to be considered during river closure construction
Section, after flow velocity when damming, flow-reduction, closure difficulty is obviously reduced.According to calculating, maximum cut-off material particle diameter was by originally
0.8m be reduced to 0.4m, cut-off material loss rate is reduced to 22% by original 40%, remarkable in economical benefits.
The above embodiments are only optimal technical scheme of the present utility model, and are not construed as limit of the present utility model
System, the embodiment in the application and the feature in embodiment, can mutual combination in any in the case of not conflicting.This practicality is new
The technical scheme that the protection domain of type should be recorded with claim, including technical characteristic in the technical scheme that claim is recorded
Equivalents is protection domain.Equivalent the most in this range is improved, also protection domain of the present utility model it
In.
Claims (8)
1. a flow-stopping plate cut-off equipment, is characterized in that: be provided with flow-stopping plate (3), flow-stopping plate (3) in the downstream of Longkou of damming (7)
Width less than damming the width of Longkou (7), the downstream of flow-stopping plate (3) is hinged, in baffle with the free bearing being fixedly arranged on river bed (5)
The lower section of plate (3) is provided with hydraulic jack (4), and one end of hydraulic jack (4) is hinged with flow-stopping plate (3), the other end and river bed
(5) connected by free bearing.
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: Longkou of damming (7) be positioned in an opposite direction dike (2) with
Bank protection or lead between wall (1), or Longkou of damming (7) be positioned in an opposite direction between dike (2)；
When flow-stopping plate (3) is propped up by hydraulic jack (4), flow-stopping plate height (H) is the 0.1 ~ 0.8 of dike (2) in an opposite direction.
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: bank protection or lead wall (1) and in an opposite direction dike (2) be
Xoncrete structure or stone masonry structure.
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: described river bed (5) is concrete knot
Structure or stone masonry structure.
A kind of flow-stopping plate cut-off equipment the most according to claim 4, is characterized in that: described flow-stopping plate (3) is positioned at river bed
(5) in baffle hole (8), when flow-stopping plate (3) is in the state put down, and the upper surface of flow-stopping plate (3) is concordant with river bed (5).
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: described flow-stopping plate (3) thickness is
10cm~20cm。
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: described flow-stopping plate (3) is steel plate.
A kind of flow-stopping plate cut-off equipment the most according to claim 1, is characterized in that: described flow-stopping plate (3) by one piece or
Polylith forms, and hydraulic jack (4) is one or more accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620515746.0U CN205636668U (en) | 2016-05-31 | 2016-05-31 | Keep off and flow board cut -off equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620515746.0U CN205636668U (en) | 2016-05-31 | 2016-05-31 | Keep off and flow board cut -off equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205636668U true CN205636668U (en) | 2016-10-12 |
Family
ID=57051324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620515746.0U Expired - Fee Related CN205636668U (en) | 2016-05-31 | 2016-05-31 | Keep off and flow board cut -off equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205636668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839597A (en) * | 2016-05-31 | 2016-08-10 | 中国葛洲坝集团第工程有限公司 | Cut-off device of flow baffle and method |
-
2016
- 2016-05-31 CN CN201620515746.0U patent/CN205636668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839597A (en) * | 2016-05-31 | 2016-08-10 | 中国葛洲坝集团第工程有限公司 | Cut-off device of flow baffle and method |
| CN105839597B (en) * | 2016-05-31 | 2018-06-26 | 中国葛洲坝集团第一工程有限公司 | Flow-stopping plate cut-off equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20190531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |