CN107700440A - A kind of diversion tunnel concrete plug and its construction method - Google Patents
A kind of diversion tunnel concrete plug and its construction method Download PDFInfo
- Publication number
- CN107700440A CN107700440A CN201711043459.XA CN201711043459A CN107700440A CN 107700440 A CN107700440 A CN 107700440A CN 201711043459 A CN201711043459 A CN 201711043459A CN 107700440 A CN107700440 A CN 107700440A
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- China
- Prior art keywords
- plug
- diversion tunnel
- construction
- mozzle
- gallery
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- 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.)
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Classifications
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- 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
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention discloses a kind of diversion tunnel concrete plug and its construction method,Temporary water retaining cofferdam including being arranged on diversion tunnel front end,The mozzle through diversion tunnel is embedded with temporary water retaining cofferdam,It is additionally provided with the plug for blocking diversion tunnel completely and first pours block,Plug first pours block and covers the front end of mozzle,The rear end of mozzle is arranged with construction gallery,Block is first poured with plug and is connected in the front end of construction gallery,The outer surface covering plug main body of construction gallery,Plug main body floods diversion tunnel completely,This diversion tunnel concrete plug and its construction method,The temporary water retaining cofferdam for being arranged on diversion tunnel front end has ensured that diversion tunnel concrete head first pours the dry work of block,Eliminate due to influence of the plug front end percolating water for concrete construction,Again by setting construction gallery,It ensure that the follow-up row of current leads,So as to improve the construction quality of plug main body,Improve drainage efficiency and reduce construction cost,This is invented for hydraulic engineering field.
Description
Technical field
The present invention relates to hydraulic engineering field, more particularly to a kind of diversion tunnel concrete plug and its construction method.
Background technology
Water conservancy diversion outlet structure escape works are after water conservancy diversion sluicing task is completed, it usually needs block water conservancy diversion outlet structure escape works, at present
In Hydraulic and Hydro-Power Engineering, influenceed, led by closure gate installation precision, water-stagnating effect, geological conditions and liner structure
Before flowing the closure of tunnel occluding body, there is the infiltration of the leak for coming from closure gate, osculum and Lining Crack.In order to improve coagulation
Native bulkhead concrete pouring quality, it is necessary to take temporary water dash and row to lead measure, create for blocking concrete for diversion tunnel and apply dryly
The condition of work.Existing temporary water dash and row lead measure and the problems such as drainage efficiency is low, and construction cost is high be present.
The content of the invention
It is an object of the invention to provide the diversion tunnel concrete plug that a kind of drainage efficiency is high, construction cost is low and its apply
Work method.
The technical solution used in the present invention is：
A kind of diversion tunnel concrete plug, including it is arranged on the temporary water retaining cofferdam of diversion tunnel front end, temporary water retaining cofferdam
The mozzle through diversion tunnel is inside embedded with, the plug for blocking diversion tunnel completely is additionally provided with and first pours block, plug first pours block and will led
The front end covering of flow tube, the rear end of mozzle are arranged with construction gallery, and the front end of construction gallery is first poured block with plug and connected, construction
The outer surface covering plug main body of gallery, plug main body flood diversion tunnel completely.
The improvement of technical solution of the present invention is further used as, the rear end of mozzle is flexible pipe.
The improvement of technical solution of the present invention is further used as, the front end of flexible pipe is provided with gate valve.
The improvement of technical solution of the present invention is further used as, construction gallery is concrete prefabricated gallery.
The improvement of technical solution of the present invention is further used as, the top of construction gallery, which is provided with, to be used to introduce backfill grouting pipeline
With the preformed hole of contact grouting pipeline.
The improvement of technical solution of the present invention is further used as, backfill grouting pipeline includes stretching into through plug main body and one end
The rockfill grouting pipe of construction gallery, grout cell is provided with the mouth of pipe of rockfill grouting pipe.
The improvement of technical solution of the present invention is further used as, plug first pours block and the periphery of plug main body is equipped with neck,
The hydro-expansive rubber for being used for only starching is provided with neck.
The present invention proposes a kind of construction method of diversion tunnel concrete plug, comprises the following steps：
1) fills temporary water retaining cofferdam in the front end of diversion tunnel, and mozzle, mozzle are buried in temporary water retaining cofferdam
Through diversion tunnel；
2) pours plug in the front end of diversion tunnel and first pours block, and plug first pours block by the front end covering of mozzle and by water conservancy diversion
Hole blocks completely；
3) sets construction gallery in diversion tunnel, and the front end of construction gallery is first poured block with plug and is connected, and construction gallery is arranged
In the outside of mozzle；
4) pours plug main body, and the outer surface of construction gallery is completely covered and floods diversion tunnel completely by plug main body；
5) confined beds flow tube, plugging construction gallery.
The improvement of technical solution of the present invention is further used as, when step 1 buries mozzle, gate valve is set on mozzle,
The mozzle of gate valve back segment is set to flexible pipe.
It is further used as the improvement of technical solution of the present invention, after step 5 confined bed flow tube, first flexible pipe is removed, finally sealed
Stifled construction gallery.
Beneficial effects of the present invention：This diversion tunnel concrete plug and its construction method, using being arranged on diversion tunnel front end
Temporary water retaining cofferdam ensured that diversion tunnel concrete plug first pours the dry work of block, eliminate due to plug front end percolating water pair
In the influence of concrete construction, then by setting construction gallery, it ensure that the follow-up row of current leads, so as to improve plug main body
Construction quality, improve drainage efficiency and reduce construction cost.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the internal structure schematic diagram of diversion tunnel concrete plug in the embodiment of the present invention；
Fig. 2 is the A-A profiles of diversion tunnel concrete plug in the embodiment of the present invention；
Fig. 3 is that hydro-expansive rubber and concrete reserve neck schematic diagram in the embodiment of the present invention；
Fig. 4 is the drawing in side sectional elevation of construction gallery in the embodiment of the present invention.
Embodiment
1~Fig. 4 of reference picture, the present invention is a kind of diversion tunnel concrete plug, including is arranged on the interim of diversion tunnel front end
Water-retaining cofferdam 1, temporary water retaining cofferdam 1 is piled up using clay bag to be formed, and temporary water retaining cofferdam 1 piles up clay bag should not be too high, high
1.5m, thickness 1.5m or so, the mozzle 2 through diversion tunnel is embedded with temporary water retaining cofferdam 1, mozzle 2 is according to infiltration water
The size of amount selectes caliber and radical, and the front end of mozzle 2 is steel pipe, is additionally provided with the plug for blocking diversion tunnel completely and first pours block
12, plug first pours block 12 and covers the front end of mozzle 2, and the rear end of mozzle 2 is arranged with construction gallery 5, before construction gallery 5
End is first poured block 12 with plug and connected, and the outer surface covering plug main body 13 of construction gallery 5, plug main body 13 floods diversion tunnel completely
Not yet.
This diversion tunnel concrete plug and its construction method, protected using the temporary water retaining cofferdam 1 for being arranged on diversion tunnel front end
The dry work that diversion tunnel concrete plug first pours block 12 is hindered, has eliminated because plug front end percolating water is for concrete construction
Influence, then by setting construction gallery 5, ensure that the follow-up row of current leads, so as to improve the construction quality of plug main body 13,
Improve drainage efficiency and reduce construction cost.
As the preferred embodiment of the present invention, the rear end of mozzle 2 is flexible pipe 4, constructs and finishes when plug main body 13,
Before plugging construction gallery 5, this flexible pipe 4 can be removed, be recycled after remaining, save construction cost.
As the preferred embodiment of the present invention, the front end of flexible pipe 4 is provided with gate valve 3, must be by this before plugging construction gallery 5
Gate valve 3 is closed, and keeps the drying in construction gallery 5.
As the preferred embodiment of the present invention, construction gallery 5 is concrete prefabricated gallery, can be with the coagulation that subsequently pours
Soil combines together.
As the preferred embodiment of the present invention, the top of construction gallery 5, which is provided with, to be used to introduce backfill grouting pipeline and connects
The preformed hole 11 of grouting pipeline 8 is touched, plug backfill, surface grouting are carried out in construction gallery 5, after the completion of grouting, are applied
The concrete backfill of work gallery 5.
As the preferred embodiment of the present invention, backfill grouting pipeline includes stretching into construction through plug main body 13 and one end
The rockfill grouting pipe 9 of gallery 5, grout cell 10 is provided with the mouth of pipe of rockfill grouting pipe 9.
As the preferred embodiment of the present invention, plug first pours block 12 and the periphery of plug main body 13 is equipped with neck 6, card
The hydro-expansive rubber 7 for being used for only starching is provided with groove 6, it is pre- according to only slurry structure during plug both ends concrete is poured
The requirement of the size of neck 6 is stayed, corresponding embedded part is buried on bulkhead concrete periphery in advance, embedded part is torn open after concrete form removal
Remove, form concrete neck 6, the concrete that hydro-expansive rubber 7 is arranged on concrete plug periphery is reserved in neck 6.
The present invention proposes a kind of construction method of diversion tunnel concrete plug, comprises the following steps：
1) fills temporary water retaining cofferdam 1 in the front end of diversion tunnel, and mozzle 2 is buried in temporary water retaining cofferdam 1, leads
Flow tube 2 runs through diversion tunnel；
2) pours plug in the front end of diversion tunnel and first pours block 12, and plug first pours block 12 and the front end of mozzle 2 is covered and incited somebody to action
Diversion tunnel blocks completely；
3) sets construction gallery 5 in diversion tunnel, and the front end of construction gallery 5 is first poured block 12 with plug and is connected, construction gallery
5 are set in the outside of mozzle 2；
4) pours plug main body 13, and plug main body 13 outer surface of construction gallery 5 is completely covered and diversion tunnel is complete
Flood；
5) confined beds flow tube 2, plugging construction gallery 5.
As the preferred embodiment of the present invention, when step 1 buries mozzle 2, gate valve, gate valve are set on mozzle 2
The mozzle 2 of back segment is set to flexible pipe 4.
As the preferred embodiment of the present invention, after step 5 confined bed flow tube 2, first flexible pipe 4 is removed, finally closure is applied
Work gallery 5, after concrete stopper structure is formed, on its end vault periphery, oblique pore-creating carries out strengthening grouting hole, pore-creating requirement
Through bulkhead concrete and lining concrete and the faying face of lining concrete and basement rock.
To ensure the safe and reliable of diversion tunnel concrete plug, in addition to strictly control concrete pouring quality, in concrete
Plug and the keystone of construction gallery 5 are respectively provided with rockfill grouting, enter in concrete plug and liner structure, basement rock contact surface
Row surface grouting, by improving concrete plug to backfill, the optimization of surface grouting construction method and the control of grouting quality
Security reliability.
Certainly, the invention is not limited to above-mentioned embodiment, and those skilled in the art are without prejudice to originally
Equivalent variations or replacement can be also made on the premise of spirit, these equivalent modifications or replacement are all contained in the application right
It is required that in limited range.
Claims (10)
- A kind of 1. diversion tunnel concrete plug, it is characterised in that：Temporary water retaining cofferdam (1) including being arranged on diversion tunnel front end, The mozzle (2) through diversion tunnel is embedded with the temporary water retaining cofferdam (1), is additionally provided with the plug for blocking diversion tunnel completely Block (12) is first poured, the plug first pours block (12) and covers the front end of the mozzle (2), the rear end set of the mozzle (2) Provided with construction gallery (5), front end and the plug of the construction gallery (5) first pour block (12) and connected, the construction gallery (5) Outer surface covering plug main body (13), the plug main body (13) floods diversion tunnel completely.
- 2. diversion tunnel concrete plug according to claim 1, it is characterised in that：The rear end of the mozzle (2) is soft Manage (4).
- 3. diversion tunnel concrete plug according to claim 2, it is characterised in that：The front end of the flexible pipe (4) is provided with lock Valve (3).
- 4. diversion tunnel concrete plug according to claim 1, it is characterised in that：The construction gallery (5) is concrete Precast Gallery.
- 5. diversion tunnel concrete plug according to claim 1, it is characterised in that：Set at the top of the construction gallery (5) There is the preformed hole (11) for introducing backfill grouting pipeline and contact grouting pipeline (8).
- 6. diversion tunnel concrete plug according to claim 5, it is characterised in that：The backfill grouting pipeline includes running through The rockfill grouting pipe (9) of the construction gallery (5) is stretched into the plug main body (13) and one end, the rockfill grouting pipe (9) Grout cell (10) is provided with the mouth of pipe.
- 7. diversion tunnel concrete plug according to claim 1, it is characterised in that：The plug first pours block (12) and plug The periphery of main body (13) is equipped with neck (6), and the hydro-expansive rubber (7) for being used for only starching is provided with the neck (6).
- 8. a kind of construction method of diversion tunnel concrete plug, it is characterised in that comprise the following steps：1) fills temporary water retaining cofferdam (1) in the front end of diversion tunnel, and mozzle is buried in the temporary water retaining cofferdam (1) (2), the mozzle (2) runs through diversion tunnel；2) pours plug in the front end of diversion tunnel and first pours block (12), and the plug first pours block (12) and covers the front end of mozzle (2) Cover and block diversion tunnel completely；3) sets construction gallery (5) in diversion tunnel, and front end and the plug of the construction gallery (5) first pour block (12) phase Even, the construction gallery (5) is set in the outside of the mozzle (2)；4) pours plug main body (13), and the outer surface of the construction gallery (5) is completely covered and incited somebody to action by the plug main body (13) Diversion tunnel floods completely；5) closes the mozzle (2), blocks the construction gallery (5).
- 9. the construction method of diversion tunnel concrete plug according to claim 8, it is characterised in that：Step 1 buries water conservancy diversion When managing (2), gate valve (3) is set on mozzle (2), the mozzle (2) of gate valve (3) back segment is set to flexible pipe (4).
- 10. the construction method of diversion tunnel concrete plug according to claim 9, it is characterised in that：Step 5 is closed described After mozzle (2), first the flexible pipe (4) is removed, finally blocks the construction gallery (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043459.XA CN107700440A (en) | 2017-10-31 | 2017-10-31 | A kind of diversion tunnel concrete plug and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043459.XA CN107700440A (en) | 2017-10-31 | 2017-10-31 | A kind of diversion tunnel concrete plug and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107700440A true CN107700440A (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711043459.XA Pending CN107700440A (en) | 2017-10-31 | 2017-10-31 | A kind of diversion tunnel concrete plug and its construction method |
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| Country | Link |
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| CN (1) | CN107700440A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775002A (en) * | 2018-06-28 | 2018-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The plugging structure for diversion tunnel and construction method intersected with diversion tunnel |
| CN112211161A (en) * | 2020-10-27 | 2021-01-12 | 中水北方勘测设计研究有限责任公司 | Method for plugging diversion bottom hole of concrete dam in severe cold area |
| CN112323740A (en) * | 2020-10-26 | 2021-02-05 | 长江勘测规划设计研究有限责任公司 | Integrated 'leading-blocking-leading' multifunctional temporary ecological water drainage device and method |
| CN114790714A (en) * | 2022-04-24 | 2022-07-26 | 中国电建集团北京勘测设计研究院有限公司 | Later-stage diversion flood-fighting method for closed reservoir basin construction without permanent water release structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203905031U (en) * | 2014-05-30 | 2014-10-29 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Drainage structure used during concrete plug construction period |
| CN207537993U (en) * | 2017-10-31 | 2018-06-26 | 广东水电二局股份有限公司 | A kind of diversion tunnel concrete plug |
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2017
- 2017-10-31 CN CN201711043459.XA patent/CN107700440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203905031U (en) * | 2014-05-30 | 2014-10-29 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Drainage structure used during concrete plug construction period |
| CN207537993U (en) * | 2017-10-31 | 2018-06-26 | 广东水电二局股份有限公司 | A kind of diversion tunnel concrete plug |
Non-Patent Citations (3)
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| 罗永华;雷世贤;: "董箐水电站左岸导流洞快速封堵施工技术" * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775002A (en) * | 2018-06-28 | 2018-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The plugging structure for diversion tunnel and construction method intersected with diversion tunnel |
| CN112323740A (en) * | 2020-10-26 | 2021-02-05 | 长江勘测规划设计研究有限责任公司 | Integrated 'leading-blocking-leading' multifunctional temporary ecological water drainage device and method |
| CN112211161A (en) * | 2020-10-27 | 2021-01-12 | 中水北方勘测设计研究有限责任公司 | Method for plugging diversion bottom hole of concrete dam in severe cold area |
| CN114790714A (en) * | 2022-04-24 | 2022-07-26 | 中国电建集团北京勘测设计研究院有限公司 | Later-stage diversion flood-fighting method for closed reservoir basin construction without permanent water release structure |
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