CN106836035A - A kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment - Google Patents
A kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment Download PDFInfo
- Publication number
- CN106836035A CN106836035A CN201710224274.2A CN201710224274A CN106836035A CN 106836035 A CN106836035 A CN 106836035A CN 201710224274 A CN201710224274 A CN 201710224274A CN 106836035 A CN106836035 A CN 106836035A
- Authority
- CN
- China
- Prior art keywords
- embankment
- cofferdam
- culvert
- antiseepage film
- spoil
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment, the domatic upper berth of embankment first in culvert both sides sets antiseepage film, then cofferdam is set, cofferdam is made up of the straightway of arc section and connection arc section two ends, antiseepage film is pushed down by the straightway in cofferdam, so that water cannot penetrate into embankment from the embankment for being provided with antiseepage film overlay segment, also cannot just be entered inside culvert by the subsiding crack of culvert barrel again, so as to empty culvert inside ponding as early as possible, the effluent cost inside culvert is reduced, construction costs is reduced.
Description
Technical field
The present invention relates to culvert cofferdam dam filling construction under a kind of porous embankment, it is adaptable to the dimension of existing culvert under porous embankment
Reinforcing engineering is repaiied, effluent cost during culvert maintenance and reinforcement can be reduced, reduce construction costs.
Background technology
Porous embankment is generally with ratchel, cobble or other porositys are high, good water permeability material heap is built with permeable
The embankment of ability.The spoil embankment largely used in the sinking land in coalmining areas is filled by gangue materials and formed.Spoil sheet is as granular material
Material, construction rolling is insufficient in addition, and the water penetration of filler is often higher.Therefore, spoil embankment is it is also assumed that be porous embankment.
Due to a variety of causes, such as long neglected and in disrepair, culvert overlying depth of packing increases, it is necessary to enter to its structure culvert under porous embankment
Row is reinforced and repaired.Conventional method is to fill cofferdam in the two ends openings position of culvert, will culvert inside and the isolation of outside water system,
Then the ponding in culvert is emptied, obtains working space.Because embankment sheet is as seepy material, in drainage procedure,
Water can pass through embankment, then be entered inside culvert by the subsiding crack of culvert barrel.Although openings position is deposited due to cofferdam
Culvert is cannot be introduced into, water, but embankment-barrel this permeation pathway, drainage procedure reclaimed water is endlessly entered into culvert
Portion.In order that culvert inside ponding is emptied as early as possible, and it is that culvert maintenance and reinforcement creates good working space, draining energy can only be increased
Power, causes effluent cost to increase sharply.Such issues that Huainan Mining Area several existing culvert maintenance engineering saliency out,
Indivedual engineerings that effluent cost has are up to up to a million, account for the 20% of total investment of engineering.
The content of the invention
Goal of the invention：For above-mentioned prior art, a kind of cofferdam side of filling for being applicable existing culvert under spoil embankment is proposed
Method, can reduce the effluent cost inside culvert.
Technical scheme：The anti-seepage method in existing culvert cofferdam, comprises the following steps under a kind of embankment suitable for spoil：
Step a：The domatic upper berth of embankment in culvert both sides sets antiseepage film；
Step b：Cofferdam is set, and the cofferdam is made up of the straightway of arc section and connection arc section two ends, described anti-
Film is oozed to be pushed down by the straightway in cofferdam.
Further, extended outside the antiseepage film on the outside of embankment leg wire of slope at 2-3m.
Further, the antiseepage film along the length L in embankment direction according to embankment fill material infiltration coefficient and cofferdam inside and outside
Head difference determine that circular is：
L=K Δs/v
In formula, L is antiseepage film length, and Δ is head difference inside and outside cofferdam, and K is embankment infiltration coefficient, and v is seepage velocity.
Further, waterline is exposed on the top of the antiseepage film.
Further, the cofferdam is made up of timber and clay filler.
Further, the cofferdam straightway is consistent with antiseepage film length along embankment direction extension.
Beneficial effect：A kind of cofferdam dam filling construction for being applicable existing culvert under spoil embankment of the invention, what it was applicable
Embankment is filled by gangue and formed, and water penetration is strong.Due to underground mining activity, earth's surface can be settled, in order to maintain embankment top
Face absolute altitude is constant, it is necessary to carry out increasing treatment to embankment, causes culvert top surface overlying depth of packing to increase.Accordingly, it would be desirable to containing
Hole structure is reinforced, and the method for reinforcing generally has thickening culvert side wall and top board, or rectangle steel framework is set in culvert
Frame, is in close contact with original structure, forms the composite construction of common stress.No matter a kind of that reinforcement means, is required at two sections
Cofferdam is filled at hole, forms closed area, and then by the region ponding emptying, personnel, equipment could enter the region, be applied
Work industry.Cofferdam of the invention is constituted by three sections altogether, and arc need to surround culvert opening, both sides straightway along embankment direction outside
Stretch.Antiseepage film is set on side slope of embankment upper berth, antiseepage film need to be pushed down by straightway cofferdam, so that water cannot be anti-from being provided with
The embankment for oozing film overlay segment penetrates into embankment, also cannot just be entered inside culvert by the subsiding crack of culvert barrel again, so as to
The enough culvert of emptying as early as possible inside ponding, reduces the effluent cost inside culvert, reduces construction costs.
Brief description of the drawings
Fig. 1 is cofferdam elevation of the invention；
Fig. 2 is cofferdam plan of the invention；
Fig. 3 is embankment cross-sectional view of the invention；
In accompanying drawing, 1 is culvert, and 2 is that embankment is domatic, and 3 is antiseepage film, and 4 is embankment leg wire of slope, and 5 is cofferdam, and 6 is curb side
Line, 7 is embankment center line.
Specific embodiment
The present invention is done below in conjunction with the accompanying drawings further is explained.
The anti-seepage method in existing culvert cofferdam, comprises the following steps under a kind of embankment suitable for spoil：
Step a：Domatic 2 upper berth of embankment in the both sides of culvert 1 sets and extended outside embankment leg wire of slope 4 outside antiseepage film 3, antiseepage film 3
At the 2-3m of side, waterline is exposed on the top of antiseepage film 3, as shown in Figure 3.Antiseepage film 3 is along the unilateral length L in embankment direction according to road
Head difference inside and outside dike filler infiltration coefficient and cofferdam 5 determines that circular is：
L=K Δs/v
In formula, L is antiseepage film length, m；Δ is head difference, m inside and outside cofferdam；K is embankment infiltration coefficient, m/s；V is infiltration
Speed, m/s.
Step b：Cofferdam 5 is set, and cofferdam 5 is made up of the straightway of arc section and connection arc section two ends, and cofferdam 5 is by wood
Stake and clay filler composition, extend outward the antiseepage film 3 on the outside of embankment leg wire of slope 4 and embankment domatic 2 by the straightway in cofferdam 5
Push down, the straightway of cofferdam 5 is consistent with antiseepage film length along embankment direction extension, as shown in Figure 2.
In theory, the water penetrated into the range of cofferdam in the unit interval is Sv, and cofferdam internal unit time internal drainage energy
Power is Q, if：
Q≥Sv
Then ponding is not had inside cofferdam；In formula, Q is pumping drainage ability, m3/s；S is for embankment in waterline with bottom
Divide cross sectional area, m2。
Claims (6)
1. under a kind of embankment suitable for spoil existing culvert cofferdam anti-seepage method, it is characterised in that comprise the following steps：
Step a：The domatic upper berth of embankment in culvert both sides sets antiseepage film；
Step b：Cofferdam is set, and the cofferdam is made up of the straightway of arc section and connection arc section two ends, the antiseepage film
Pushed down by the straightway in cofferdam.
2. under the embankment suitable for spoil according to claim 1 existing culvert cofferdam anti-seepage method, it is characterised in that institute
State and extended outside antiseepage film on the outside of embankment leg wire of slope at 2-3m.
3. under the embankment suitable for spoil according to claim 1 and 2 existing culvert cofferdam anti-seepage method, its feature exists
In the antiseepage film determines along the length L in embankment direction according to the head difference inside and outside embankment fill material infiltration coefficient and cofferdam, tool
Body computational methods are：
L=K Δs/v
In formula, L is antiseepage film length, and Δ is head difference inside and outside cofferdam, and K is embankment infiltration coefficient, and v is seepage velocity.
4. under the embankment suitable for spoil according to claim 3 existing culvert cofferdam anti-seepage method, it is characterised in that institute
Expose waterline in the top for stating antiseepage film.
5. under the embankment suitable for spoil according to claim 4 existing culvert cofferdam anti-seepage method, it is characterised in that institute
Cofferdam is stated to be made up of timber and clay filler.
6. under the embankment suitable for spoil according to claim 4 existing culvert cofferdam anti-seepage method, it is characterised in that institute
State cofferdam straightway consistent with antiseepage film length along embankment direction extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224274.2A CN106836035B (en) | 2017-04-07 | 2017-04-07 | A kind of cofferdam dam filling construction being applicable in existing culvert under spoil embankment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224274.2A CN106836035B (en) | 2017-04-07 | 2017-04-07 | A kind of cofferdam dam filling construction being applicable in existing culvert under spoil embankment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106836035A true CN106836035A (en) | 2017-06-13 |
| CN106836035B CN106836035B (en) | 2018-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710224274.2A Expired - Fee Related CN106836035B (en) | 2017-04-07 | 2017-04-07 | A kind of cofferdam dam filling construction being applicable in existing culvert under spoil embankment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004843A (en) * | 2019-05-06 | 2019-07-12 | 中国建设基础设施有限公司 | Coombe location antiseepage embankment structure and its construction method |
| CN111305095A (en) * | 2020-03-30 | 2020-06-19 | 中铁第五勘察设计院集团有限公司 | Pushing frame culvert for existing railway underpass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838995A (en) * | 2010-05-20 | 2010-09-22 | 中铁六局集团有限公司 | Simple water sealing method of steel sheet pile cofferdam for shoal affected by tidal water level |
| CN203113359U (en) * | 2013-03-18 | 2013-08-07 | 中国水电顾问集团成都勘测设计研究院 | Earth rock cofferdam structure |
| CN203429606U (en) * | 2013-07-23 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Sediment retaining bank reconstructed from temporary cofferdam |
-
2017
- 2017-04-07 CN CN201710224274.2A patent/CN106836035B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838995A (en) * | 2010-05-20 | 2010-09-22 | 中铁六局集团有限公司 | Simple water sealing method of steel sheet pile cofferdam for shoal affected by tidal water level |
| CN203113359U (en) * | 2013-03-18 | 2013-08-07 | 中国水电顾问集团成都勘测设计研究院 | Earth rock cofferdam structure |
| CN203429606U (en) * | 2013-07-23 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Sediment retaining bank reconstructed from temporary cofferdam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004843A (en) * | 2019-05-06 | 2019-07-12 | 中国建设基础设施有限公司 | Coombe location antiseepage embankment structure and its construction method |
| CN111305095A (en) * | 2020-03-30 | 2020-06-19 | 中铁第五勘察设计院集团有限公司 | Pushing frame culvert for existing railway underpass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106836035B (en) | 2018-11-27 |
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Granted publication date: 20181127 Termination date: 20200407 |