CN104831688A - Method for cofferdam construction - Google Patents
Method for cofferdam construction Download PDFInfo
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- CN104831688A CN104831688A CN201510245086.9A CN201510245086A CN104831688A CN 104831688 A CN104831688 A CN 104831688A CN 201510245086 A CN201510245086 A CN 201510245086A CN 104831688 A CN104831688 A CN 104831688A
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- film bag
- cofferdam
- film
- bag
- catchwater
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Abstract
The invention discloses a method for cofferdam construction, which relates to the technical field of water conservancy dam construction. The method comprises the following steps of 1, clearing and levelling; 2, laying and fixing a film bag; 3, filling the film bag; 4, laying an upstream impermeable membrane; 5, draining the film bag. In comparison with the prior art, the method has the advantages of simple structure and convenient construction.
Description
Technical field
The present invention relates to water resources dam technical field of construction, especially a kind of method of cofferdam construction.
Background technology
At present, the form of construction work in cofferdam has fore shaft steel sheet-pile cofferdam, Larsen steel sheet-pile cofferdam, open caisson, build cofferdam, island, the multiple method such as precast-boxed cofferdam, but for having block stone, erratic boulder geology and topography variation is large, the shallow water area cofferdam of the high complicated hydrologic condition of environmental requirement in works depth bounds, above-mentioned cofferdam construction all has its limitation, shortcomings such as there is laying difficulty, have high input, be long in time limit.Utility application numbers 201320116906.0 discloses a kind of geomembrane bag blast cofferdam, comprise geomembrane bag and positioning steel tube support that length differs, below the face, riverbed around cushion cap is planned to build in the insertion of described positioning steel tube support bottom, in the space of positioning steel tube internal stent, geomembrane bag stacks gradually by order from long to short that to form horizontal end face be trapezoidal closed enclose body, but this utility application lacks the upstream and downstream treatment technology for film bag.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of cofferdam construction, and it can solve laying difficulty, the problem long in time limit that prior art exists.
In order to solve the problem, the technical solution adopted in the present invention is: the method for this cofferdam construction, comprises the following steps:
A. clear up smooth: by needing, the region arranging cofferdam is smooth;
B. film bag is laid and is fixed: lay film bag to peak level bottom dam body, described film bag has mesh, bottom described dam body, arrange wire hawser, and described wire hawser fixes described film bag both sides from the bottom of described dam body to film bag top;
C. film bag is filled: with waterpower hydraulic reclamation silt in film bag, described film bag is filled up by the mesh on described film bag by described silt;
D. upstream antiseepage film is laid: lay antiseepage film at described film bag upstream side;
E. film bag draining: back side digs catchwater in cofferdam, described catchwater lays non-woven fabrics, in described catchwater, arrange collecting well, and at described collecting well place installing submersible pump, the water in film bag pumps out by described submersible pump.
In technique scheme, technical scheme can also be more specifically: the film bag described in step C is geotextile, and described mesh size is 0.07 ~ 0.2 millimeter.
Further: antiseepage film described is in step D made up of thermoplastic resin material-polyvinyl resin.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, fill the construction of silt as cofferdam with film bag, lay simple, easy construction.
2, lay antiseepage film in the film bag upstream filling up silt, can effectively will water permeation be prevented in film bag, and submersible pump is set at the back side in cofferdam the water in film bag is pumped out, make the easy dewatering and coagulating of the silt in film bag, form firmly water-retaining cofferdam.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
The method of this cofferdam construction, comprises the following steps:
A. clear up smooth: by needing, the region arranging cofferdam is smooth;
B. film bag is laid and is fixed: lay film bag to peak level bottom dam body, described film bag has mesh, bottom described dam body, arrange wire hawser, and described wire hawser fixes described film bag both sides from the bottom of described dam body to film bag top;
C. film bag is filled: with waterpower hydraulic reclamation silt in film bag, described film bag is filled up by the mesh on described film bag by described silt, and this film bag is geotextile, and this mesh size is 0.07 millimeter;
D. upstream antiseepage film is laid: lay antiseepage film at described film bag upstream side, this antiseepage film is made up of thermoplastic resin material-polyvinyl resin;
E. film bag draining: back side digs catchwater in cofferdam, described catchwater lays non-woven fabrics, in described catchwater, arrange collecting well, and at described collecting well place installing submersible pump, the water in film bag pumps out by described submersible pump.
Embodiment 2:
The method of this cofferdam construction, comprises the following steps:
A. clear up smooth: by needing, the region arranging cofferdam is smooth;
B. film bag is laid and is fixed: lay film bag to peak level bottom dam body, described film bag has mesh, bottom described dam body, arrange wire hawser, and described wire hawser fixes described film bag both sides from the bottom of described dam body to film bag top;
C. film bag is filled: with waterpower hydraulic reclamation silt in film bag, described film bag is filled up by the mesh on described film bag by described silt, and this film bag is geotextile, and this mesh size is 0.2 millimeter;
D. upstream antiseepage film is laid: lay antiseepage film at described film bag upstream side, this antiseepage film is made up of thermoplastic resin material-polyvinyl resin;
E. film bag draining: back side digs catchwater in cofferdam, described catchwater lays non-woven fabrics, in described catchwater, arrange collecting well, and at described collecting well place installing submersible pump, the water in film bag pumps out by described submersible pump.
Adopt film bag to fill silt as the construction in cofferdam, can gather materials on the spot, and lay simple, easy construction; Lay antiseepage film in the film bag upstream filling up silt, can effectively will water permeation be prevented in film bag, and submersible pump is set at the back side in cofferdam the water in film bag is pumped out, make the easy dewatering and coagulating of the silt in film bag, form firmly water-retaining cofferdam.
Claims (3)
1. a method for cofferdam construction, is characterized in that comprising the following steps:
A. clear up smooth: by needing, the region arranging cofferdam is smooth;
B. film bag is laid and is fixed: lay film bag to peak level bottom dam body, described film bag has mesh, bottom described dam body, arrange wire hawser, and described wire hawser fixes described film bag both sides from the bottom of described dam body to film bag top;
C. film bag is filled: with waterpower hydraulic reclamation silt in film bag, described film bag is filled up by the mesh on described film bag by described silt;
D. upstream antiseepage film is laid: lay antiseepage film at described film bag upstream side;
E. film bag draining: back side digs catchwater in cofferdam, described catchwater lays non-woven fabrics, in described catchwater, arrange collecting well, and at described collecting well place installing submersible pump, the water in film bag pumps out by described submersible pump.
2. cofferdam construction method according to claim 1, is characterized in that: film bag described is in step geotextile, and described mesh size is 0.07 ~ 0.2 millimeter.
3. cofferdam construction method according to claim 1, is characterized in that: antiseepage film described is in step D made up of thermoplastic resin material-polyvinyl resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245086.9A CN104831688A (en) | 2015-05-14 | 2015-05-14 | Method for cofferdam construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245086.9A CN104831688A (en) | 2015-05-14 | 2015-05-14 | Method for cofferdam construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104831688A true CN104831688A (en) | 2015-08-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510245086.9A Pending CN104831688A (en) | 2015-05-14 | 2015-05-14 | Method for cofferdam construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN104831688A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059523A (en) * | 2017-06-20 | 2017-08-18 | 天津大学 | A kind of construction method that road is built on reclaimed ground and the subgrade strengthening structure of construction method formation |
| CN107675717A (en) * | 2017-09-09 | 2018-02-09 | 中建八局第三建设有限公司 | Phytal zone green jumbo bag cofferdam construction method |
| CN110593286A (en) * | 2019-09-04 | 2019-12-20 | 河海大学 | Removable cofferdam rapid construction geotechnical formwork bag net hanging structure and construction method thereof |
Citations (5)
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| RU2319805C2 (en) * | 2006-04-11 | 2008-03-20 | Общество с ограниченной ответственностью Научно-производственная фирма "БЕРЕГ" | Method for bio-positive spur dike erection |
| CN101967785A (en) * | 2010-09-17 | 2011-02-09 | 唐山市滨海大道建设指挥部 | High-grade highway structure of soaked sand dredger filling embankment in coastal region |
| CN202347497U (en) * | 2011-12-16 | 2012-07-25 | 王鸿鹏 | Dam body anti-seepage structure |
| CN203188224U (en) * | 2013-03-15 | 2013-09-11 | 浙江省交通工程建设集团有限公司 | Geomembrane bag sand blowing cofferdam |
| JP2014218847A (en) * | 2013-05-09 | 2014-11-20 | 大成建設株式会社 | Temporary cofferdam wall |
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2015
- 2015-05-14 CN CN201510245086.9A patent/CN104831688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2319805C2 (en) * | 2006-04-11 | 2008-03-20 | Общество с ограниченной ответственностью Научно-производственная фирма "БЕРЕГ" | Method for bio-positive spur dike erection |
| CN101967785A (en) * | 2010-09-17 | 2011-02-09 | 唐山市滨海大道建设指挥部 | High-grade highway structure of soaked sand dredger filling embankment in coastal region |
| CN202347497U (en) * | 2011-12-16 | 2012-07-25 | 王鸿鹏 | Dam body anti-seepage structure |
| CN203188224U (en) * | 2013-03-15 | 2013-09-11 | 浙江省交通工程建设集团有限公司 | Geomembrane bag sand blowing cofferdam |
| JP2014218847A (en) * | 2013-05-09 | 2014-11-20 | 大成建設株式会社 | Temporary cofferdam wall |
Non-Patent Citations (1)
| Title |
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| 魏效凤: "膜袋围堰在十三陵水库除险加固工程中的应用", 《北京水务》, no. 05, 31 October 2007 (2007-10-31), pages 32 - 34 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059523A (en) * | 2017-06-20 | 2017-08-18 | 天津大学 | A kind of construction method that road is built on reclaimed ground and the subgrade strengthening structure of construction method formation |
| CN107675717A (en) * | 2017-09-09 | 2018-02-09 | 中建八局第三建设有限公司 | Phytal zone green jumbo bag cofferdam construction method |
| CN110593286A (en) * | 2019-09-04 | 2019-12-20 | 河海大学 | Removable cofferdam rapid construction geotechnical formwork bag net hanging structure and construction method thereof |
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Application publication date: 20150812 |