CN203429606U - Sediment retaining bank reconstructed from temporary cofferdam - Google Patents
Sediment retaining bank reconstructed from temporary cofferdam Download PDFInfo
- Publication number
- CN203429606U CN203429606U CN201320439519.0U CN201320439519U CN203429606U CN 203429606 U CN203429606 U CN 203429606U CN 201320439519 U CN201320439519 U CN 201320439519U CN 203429606 U CN203429606 U CN 203429606U
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- Prior art keywords
- cofferdam
- temporary cofferdam
- bank
- temporary
- sediment trapping
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- Expired - Fee Related
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- 239000013049 sediment Substances 0.000 title claims abstract description 31
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 239000002893 slag Substances 0.000 description 4
- 239000003818 cinder Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model relates to a sediment retaining bank, in particular to a sediment retaining bank reconstructed from a temporary cofferdam, and aims to provide the sediment retaining bank reconstructed from the temporary cofferdam, which has the advantages of simple structure, convenience in construction, lower engineering investment and reliability in operation. The technical scheme is that the sediment retaining bank reconstructed from the temporary cofferdam comprises a temporary cofferdam which is arranged at an inlet or an outlet of a river shore hydraulic tunnel, and is characterized in that the temporary cofferdam is removed to the design elevation and is compacted, wherein reinforced concrete is faced and cast on the inner slope of the compacted temporary cofferdam, the top of the cofferdam and the outer side slope of the cofferdam for slope protection. The sediment retaining bank is suitable for water conservancy and hydropower engineering.
Description
Technical field
The utility model relates to a kind of sediment trapping bank, the sediment trapping bank that especially a kind of Temporary Cofferdam reconstruction forms.Be applicable to Hydraulic and Hydro-Power Engineering.
Background technology
While being arranged in the hydraulic tunnel import on bank, river course and outlet structure construction, generally need to building Temporary Cofferdam and stop river, form withered construction foundation pit, after permanent construction foundation ditch in completes, remove again cofferdam.Construct for convenience and gather materials on the spot, Temporary Cofferdam generally adopts native stone or concrete structure pattern.Building of Temporary Cofferdam can make the river course what slag of tunnel import or export position increase, thereby raises bed elevation, and the later stage need to be expended the longer construction period during cofferdam demolition, and a large amount of scarfing cinders under water also makes the difficulty of construction of removing cofferdam increase, of a high price.On the other hand, because the crest level of Temporary Cofferdam is higher than tunnel import or export elevation, once will make slag in riverbed (comprising the slag body of removing cofferdam itself) along with flow backwards is to hydraulic tunnel, cause alluvial cofferdam demolition, affect the normal operation of tunnel.
Meanwhile, the import or export that is arranged in bank, river course hydraulic tunnel generally need to be built sediment trapping bank, for stopping that the bed load in river course enters hydraulic tunnel.For obtaining good sediment trapping effect, sediment trapping bank position need guarantee there is certain distance with tunnel portal, generally adopts concrete structure, is mostly arranged in the withered foundation ditch of cofferdam formation.For guaranteeing the stable of sediment trapping bank, its basis must guarantee to be arranged on firm basement rock, need to carry out a large amount of desiltings and excavation work.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, provide a kind of simple in structure, easy construction, engineering to drop into the sediment trapping bank that lower, reliable Temporary Cofferdam reconstruction forms.
The technical scheme that the utility model adopts is: the sediment trapping bank that a kind of Temporary Cofferdam reconstruction forms, this sediment trapping bank comprises the Temporary Cofferdam that is arranged in hydraulic tunnel import or export place, bank, river course, it is characterized in that: described Temporary Cofferdam is removed to design altitude compacting, domatic in Temporary Cofferdam after compacting, top, cofferdam and outer side slope veneer are built reinforced concrete revetment.
The outer side slope above water of described Temporary Cofferdam is reinforced concrete revetment, and underwater portion adopts the alloy string bag to reinforce.
In described reinforced concrete revetment, is furnished with dark beam.
In the power station of a plurality of tailrace outlets, between adjacent hydraulic tunnel, arrange concrete dividing pier, dividing pier one end connects in Temporary Cofferdam domatic, and the other end connects the hole building of hydraulic tunnel.
Sediment trapping bank bank crest level is a little less than the downstream flood level under the accidental conditions of power station.
The beneficial effects of the utility model are: by utilizing the Temporary Cofferdam reconstruction that the construction period builds to become permanent sediment trapping bank, on the one hand, can accomplish forever to face combination, reduce the dismounting amount of Temporary Cofferdam and side's amount of scarfing cinder under water, save construction period and construction costs; On the other hand, in the time of can avoiding because of cofferdam demolition, river pours in down a chimney to a large amount of alluvials that cause in tunnel, reduces the silting risk of tunnel, avoids desilting hole in, raising operational reliability.
Accompanying drawing explanation
Fig. 1 is section arrangement diagram of the present utility model.
The specific embodiment
As shown in Figure 1, the present embodiment has hydraulic tunnel 4 and hole building 5, on the import or export place basement rock of bank, river course hydraulic tunnel 4, build Temporary Cofferdam 1, for stopping river when the construction of hydraulic tunnel import and outlet structure, formed withered construction environment.In the present embodiment, Temporary Cofferdam 1 is removed to design altitude compacting, adopt reinforced concrete revetment 2 by side slope veneer outside domatic in the cofferdam after compacting, top, cofferdam and cofferdam, Temporary Cofferdam 1 is wrapped in reinforced concrete revetment 2, bank protection and Temporary Cofferdam 1 form whole, can prevent that thereby cofferdam from filling out slag and being drawn brush and affect the stability of sediment trapping bank, to guarantee sediment trapping bank safe and stable operation, and effectively stop that river course bed load enters tunnel.Outside sediment trapping bank, above water adopts reinforced concrete revetment 2, and underwater portion can adopt the mode spats such as the alloy string bag to reinforce, and avoids washing away.
Stable for guaranteeing sediment trapping bank, can to reinforced concrete revetment 2, carry out Reinforcement Design according to structural calculation achievement, as required can be at the reinforcement manner of the dark beam of the interior employing of reinforced concrete revetment 2.
Power station at a plurality of tailrace outlets, can between adjacent hydraulic tunnel 4, arrange concrete dividing pier 3, dividing pier one end connects Temporary Cofferdam 1 medial surface, the other end connects the hole building 5 of hydraulic tunnel 4, both can improve the stress condition of sediment trapping bank, also can form a plurality of independently foundation ditches, reduce construction and disturb.
Downstream flood level when sediment trapping bank bank crest level should consider downstream river course flood level and power station and normally moves in the present embodiment, generally a little less than the downstream flood level of power station accidental conditions, to avoid productive head loss.
Claims (5)
1. a Temporary Cofferdam is reconstructed the sediment trapping bank forming, this sediment trapping bank comprises the Temporary Cofferdam (1) that is arranged in bank, river course hydraulic tunnel (4) import or export place, it is characterized in that: described Temporary Cofferdam (1) is removed to design altitude compacting, domatic in the Temporary Cofferdam after compacting (1), top, cofferdam and outer side slope veneer are built reinforced concrete revetment (2).
2. the sediment trapping bank that Temporary Cofferdam reconstruction forms according to claim 1, is characterized in that: the outer side slope above water of described Temporary Cofferdam (1) is reinforced concrete revetment (2), and underwater portion adopts the alloy string bag to reinforce.
3. according to the sediment trapping bank that described in claim 1 or 2, Temporary Cofferdam reconstruction forms, it is characterized in that: described reinforced concrete revetment is furnished with dark beam in (2).
4. the sediment trapping bank that Temporary Cofferdam reconstruction forms according to claim 1, it is characterized in that: in the power station of a plurality of tailrace outlets, between adjacent hydraulic tunnel (4), arrange concrete dividing pier (3), dividing pier one end connects in Temporary Cofferdam (1) domatic, and the other end connects the hole building (5) of hydraulic tunnel (4).
5. the sediment trapping bank that Temporary Cofferdam reconstruction forms according to claim 1, is characterized in that: sediment trapping bank bank crest level is a little less than the downstream flood level under the accidental conditions of power station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439519.0U CN203429606U (en) | 2013-07-23 | 2013-07-23 | Sediment retaining bank reconstructed from temporary cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439519.0U CN203429606U (en) | 2013-07-23 | 2013-07-23 | Sediment retaining bank reconstructed from temporary cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203429606U true CN203429606U (en) | 2014-02-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439519.0U Expired - Fee Related CN203429606U (en) | 2013-07-23 | 2013-07-23 | Sediment retaining bank reconstructed from temporary cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203429606U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250960A (en) * | 2014-09-11 | 2014-12-31 | 河海大学 | Reservoir silt-preventing laying method |
| CN105735348A (en) * | 2016-04-26 | 2016-07-06 | 国电大渡河沙坪水电建设有限公司 | Sand blocking ridge and construction method thereof |
| CN106400751A (en) * | 2016-09-09 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | Sand blocking ridge structure and construction process thereof |
| CN106836035A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment |
| CN113006076A (en) * | 2021-03-04 | 2021-06-22 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction method |
| CN116623702A (en) * | 2020-07-28 | 2023-08-22 | 中交路桥华南工程有限公司 | Construction method of underwater bearing platform |
-
2013
- 2013-07-23 CN CN201320439519.0U patent/CN203429606U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250960A (en) * | 2014-09-11 | 2014-12-31 | 河海大学 | Reservoir silt-preventing laying method |
| CN105735348A (en) * | 2016-04-26 | 2016-07-06 | 国电大渡河沙坪水电建设有限公司 | Sand blocking ridge and construction method thereof |
| CN105735348B (en) * | 2016-04-26 | 2017-12-08 | 国电大渡河沙坪水电建设有限公司 | A kind of construction method of river channel hydroelectric resource development station factory building water inlet sediment trapping bank |
| CN106400751A (en) * | 2016-09-09 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | Sand blocking ridge structure and construction process thereof |
| CN106836035A (en) * | 2017-04-07 | 2017-06-13 | 中国矿业大学 | A kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment |
| CN116623702A (en) * | 2020-07-28 | 2023-08-22 | 中交路桥华南工程有限公司 | Construction method of underwater bearing platform |
| CN113006076A (en) * | 2021-03-04 | 2021-06-22 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction method |
| CN113006076B (en) * | 2021-03-04 | 2022-06-10 | 中国电建集团华东勘测设计研究院有限公司 | Flow isolation building structure for dry land construction and construction 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: 20140212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |