CN209508927U - The permanent plugging structure of high dam dam body bottom diversion outlet venthole - Google Patents
The permanent plugging structure of high dam dam body bottom diversion outlet venthole Download PDFInfo
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- CN209508927U CN209508927U CN201822242645.2U CN201822242645U CN209508927U CN 209508927 U CN209508927 U CN 209508927U CN 201822242645 U CN201822242645 U CN 201822242645U CN 209508927 U CN209508927 U CN 209508927U
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- steel pipes
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- steel pipe
- diversion outlet
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Abstract
The utility model relates to a kind of permanent plugging structures of high dam dam body bottom diversion outlet venthole.The permanent plugging structure of high dam dam body bottom diversion outlet venthole that the purpose of the utility model is to provide a kind of structures is simple, easy for construction, cost is relatively low, plugging effect is good.The technical solution of the utility model is: a kind of permanent plugging structure of high dam dam body bottom diversion outlet venthole, and for blocking bottom diversion outlet venthole, which is formed by being embedded in the ventilation steel pipe inside dam body in advance, it is characterised in that: has and blocks short steel pipes and steel deck-plate；Short steel pipes outer diameter is wherein blocked to be adapted with ventilation pipe diameter, closure short steel pipes one end is coaxially plugged in ventilation steel pipe bottom end and the end end is connected by fillet weld with ventilation steel pipe inner wall, the other end of the closure short steel pipes is exposed to outside ventilation steel pipe, is connected between ventilation steel pipe bottom end and closure short steel pipes outer wall by fillet weld.The utility model is suitable for hydraulic and hydroelectric engineering field.
Description
Technical field
The utility model relates to a kind of permanent plugging structures of high dam dam body bottom diversion outlet venthole.Suitable for water conservancy and hydropower work
Journey field.
Background technique
As China continues to increase the exploitation dynamics of hydraulic power potentials, the big library engineering construction of high dam is like a raging fire.In large-scale water
In the work progress of power station, upstream water level is high, and water level rises fastly, and water conservancy diversion flow is big, generallys use diversion tunnel combination dam body water conservancy diversion
The mode of bottom outlet carries out construction diversion, and the later period respectively blocks it.
Diversion outlet closuring body is a part of power station permanent building, for hundred meter level high dams, operates normally phase gear
Water highest head is up to rice up to a hundred, requires the antiseepage of occluding body high.Under diversion outlet closuring gate during lock, in runner
It is possible that free pressure flow alternate run operating condition, being likely to occur negative pressure when flowing full moves underwater lock, after lock leads to radial gate vibration.Cause
This needs that venthole (see Fig. 1) is arranged on 1 downstream aperture top of gate slot, and the later period, fill concrete was blocked directly in venthole.
Currently, bottom diversion outlet venthole is generally rear by the problem of embedded steel tube is arranged, does so inside dam body
It when fill concrete is shunk in phase venthole, may come to nothing to form penetrating passage with venthole tube wall, venthole is caused to block not
It is closely knit, dam body globality is destroyed, bottom diversion outlet entirety plugging effect is influenced.
Summary of the invention
Technical problem to be solved by the utility model is: in view of the above problems, provide that a kind of structure is simple, construction
The permanent plugging structure of high dam dam body bottom diversion outlet venthole convenient, cost is relatively low, plugging effect is good.
The technical scheme adopted by the utility model is a kind of permanent plugging structure of high dam dam body bottom diversion outlet venthole,
For blocking bottom diversion outlet venthole, which is formed by being embedded in the ventilation steel pipe inside dam body in advance, it is characterised in that: is had
Block short steel pipes and steel deck-plate；
It wherein blocks short steel pipes outer diameter to be adapted with ventilation pipe diameter, blocks short steel pipes one end and be coaxially plugged in ventilation steel
Tube bottom end and the end end pass through fillet weld and are connected with ventilation steel pipe inner wall, and the other end of the closure short steel pipes is exposed to ventilation steel
Pipe is outer, is connected between ventilation steel pipe bottom end and closure short steel pipes outer wall by fillet weld；
The steel lid board diameter is adapted with the internal diameter for blocking short steel pipes, blocks the bared end of short steel pipes through steel deck-plate
It blocks, the lower end surface edge of the steel deck-plate is formed with a circle groove, and steel deck-plate is connected with closure short steel pipes diameter through groove weldering.
Several band steels are welded on the steel deck-plate.
The closure short steel pipes wall thickness 25mm.
The beneficial effects of the utility model are: 1, cost is low: the plugging structure pattern material requested of use is few, production letter
Easily, it is only necessary to which one section of closure short steel pipes and one piece of steel deck-plate are attached by welding manner.2, high-efficient: this structure passes through weldering
Installation is connect, molding is fast, high-efficient.Under the urgent background of diversion outlet closuring concrete pouring construction task, the utility model
Closure can be quickly reached to require, do not influence diversion outlet closuring construction speed.3, effect is good: by along the fillet weld of caliber border
And groove weldering, it is ensured that ventilation steel pipe is completely embedded with short steel pipes are blocked, and is not easy permeable, good leak tightness.4, easy for installation: this is practical
New structure is simple, and operation is simple, easy for installation, is that one kind is readily appreciated that, convenient for the scheme of construction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the structural schematic diagram of embodiment.
Fig. 3 is the end view of steel deck-plate in embodiment.
Specific embodiment
As shown in Fig. 2, the present embodiment is a kind of permanent plugging structure of high dam dam body bottom diversion outlet venthole, led for blocking
Bottom outlet venthole 2 is flowed, venthole 2 is formed by being embedded in the ventilation steel pipe 201 inside dam body in advance.
Plugging structure, which has, in the present embodiment blocks short steel pipes 3 and steel deck-plate 4, wherein blocking the outer diameter of short steel pipes 3 and leading to
201 internal diameter of gas steel pipe is adapted, and blocks 3 wall thickness 25mm of short steel pipes, length 40cm；In 4 diameter of steel deck-plate and closure short steel pipes 3
Diameter is adapted, which is welded with several band steels 5 and is formed steel deck-plate with ribbing (see Fig. 3), 4 lower end surface of steel deck-plate
Edge is formed with a circle groove 401.
3 upper end of short steel pipes is blocked in this example and is coaxially plugged in ventilation 201 bottom end of steel pipe, is blocked 3 lower end of short steel pipes and is exposed to
It ventilates outside steel pipe 201, wherein the length of insertion ventilation lengths of steel pipes is 30cm, the length for exposing section is 10cm.It blocks on short steel pipes 3
It holds and is weldingly connected between end and ventilation 201 inner wall of steel pipe by fillet weld 6, outside ventilation 201 bottom end of steel pipe and closure short steel pipes 3
It is weldingly connected between wall by fillet weld 6, makes closure short steel pipes 3 and connect stronger stabilization between steel pipe 201 of ventilating.
Steel deck-plate 4 is welded through groove by the groove 401 of its lower end surface and blocks 3 inner wall of short steel pipes welding phase in the present embodiment
Even, so that steel deck-plate 4 be made to block short steel pipes 3.
The concrete construction method of the present embodiment is as follows:
1, short steel pipes 3 will be blocked and be nested in bottom diversion outlet ventilation 201 bottom end of steel pipe, expose 2 bottom 10cm of venthole.
2, by way of fillet weld 6, short steel pipes 3 and ventilation steel pipe 201 will be blocked along 3 top border of short steel pipes is blocked
Inner wall welding is closely knit；Equally, it by ventilation steel pipe 201 and is blocked short by way of fillet weld 6 along ventilation 201 lower end border of steel pipe
Steel pipe 3 welds closely knit.
3, in such a way that groove welds, one piece of steel deck-plate 4 is welded along 3 bottom end border of short steel pipes is blocked, reaches venthole 2
The effect of bottom end closure.
Short steel pipes 3 and steel deck-plate 4 are blocked in the present embodiment can also serve as the waterstop of diversion tunnel occluding body, bottom diversion outlet coagulation
After the completion of grave is stifled, picks up from air-free concrete and backfill closure is carried out to venthole 2, it is ensured that pour closely knit.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The those of ordinary skill in art field, in the scope of the utility model, variation, addition or the replacement made all should belong to this reality
With novel protection scope.
Claims (3)
1. the permanent plugging structure of a kind of high dam dam body bottom diversion outlet venthole, for blocking bottom diversion outlet venthole (2), the ventilation
Hole is formed by being embedded in the ventilation steel pipe (201) inside dam body in advance, it is characterised in that: is had and is blocked short steel pipes (3) and steel deck-plate
(4)；
It wherein blocks short steel pipes (3) outer diameter to be adapted with ventilation steel pipe (201) internal diameter, blocks short steel pipes (3) one end and coaxially insert
In ventilation steel pipe (201) bottom end and the end end by fillet weld (6) with ventilate steel pipe (201) inner wall be connected, the short steel of the closure
The other end of pipe is exposed to ventilation steel pipe (201) outside, ventilates and passes through between steel pipe (201) bottom end and closure short steel pipes (3) outer wall
Fillet weld (6) is connected；
Steel deck-plate (4) diameter is adapted with the internal diameter for blocking short steel pipes (3), blocks the bared end warp of short steel pipes (3)
Steel deck-plate (4) blocks, and the lower end surface edge of the steel deck-plate is formed with a circle groove (401), steel deck-plate (4) and closure short steel pipes (3)
Diameter is welded through groove to be connected.
2. the permanent plugging structure of high dam dam body bottom diversion outlet venthole according to claim 1, it is characterised in that: the steel
Several band steels (5) are welded on cover board (4).
3. the permanent plugging structure of high dam dam body bottom diversion outlet venthole according to claim 1 or 2, it is characterised in that: institute
It states and blocks short steel pipes (3) wall thickness 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242645.2U CN209508927U (en) | 2018-12-29 | 2018-12-29 | The permanent plugging structure of high dam dam body bottom diversion outlet venthole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242645.2U CN209508927U (en) | 2018-12-29 | 2018-12-29 | The permanent plugging structure of high dam dam body bottom diversion outlet venthole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209508927U true CN209508927U (en) | 2019-10-18 |
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ID=68198352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822242645.2U Active CN209508927U (en) | 2018-12-29 | 2018-12-29 | The permanent plugging structure of high dam dam body bottom diversion outlet venthole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209508927U (en) |
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2018
- 2018-12-29 CN CN201822242645.2U patent/CN209508927U/en active Active
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