CN106638647A - Underwater sunk shaft sealing method and sunk shaft - Google Patents
Underwater sunk shaft sealing method and sunk shaft Download PDFInfo
- Publication number
- CN106638647A CN106638647A CN201611271520.1A CN201611271520A CN106638647A CN 106638647 A CN106638647 A CN 106638647A CN 201611271520 A CN201611271520 A CN 201611271520A CN 106638647 A CN106638647 A CN 106638647A
- Authority
- CN
- China
- Prior art keywords
- concrete
- layer
- open caisson
- back cover
- well bore
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 104
- 238000001914 filtration Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims description 9
- 241001529734 Ocimum Species 0.000 claims description 4
- 235000010676 Ocimum basilicum Nutrition 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 44
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/02—Caissons able to be floated on water and to be lowered into water in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Revetment (AREA)
Abstract
The invention relates to an underwater sunk shaft sealing method which is characterized by comprising the following steps of: descending a prefabricated shaft body to a proper position without water drainage; digging a sunk shaft pan bottom, and performing backfilling of macadam in the pan bottom so as to form a filling filtration layer; putting concrete conveying pipe of an automobile pump into the shaft body, wherein the distance between the discharge port of the concrete conveying pipe and the top surface of the filling filtration layer is 100-300mm; descending concrete an burying the discharge port of the concrete conveying pipe into the concrete; when the concrete surface reaches the thickness of a sealing concrete layer, slowly and horizontally moving the concrete conveying pipe while descending the concrete; an when the local concrete surface to which the concrete conveying pipe is moved reaches the thickness of the sealing concrete layer, slowly and horizontally moving the concrete conveying pipe while descending the concrete until a sealing concrete layer is formed on the filling filtration layer. The underwater sunk shaft sealing method is capable preventing sand from being mixed into the sealing concrete layer, reducing the construction difficulty, achieving a relatively good sunk shaft sealing effect, furthermore reducing the volume of the sealing concrete layer reducing the concrete dosage and greatly lowering the cost; the underwater sunk shaft sealing method is capable of preventing water from entering into the concrete during the concrete descending process, and the sealing concrete layer quality is relatively good.
Description
Technical field
The present invention relates to Open caisson construction technology, particularly a kind of open caisson bottom sealing method and open caisson under water.
Background technology
The construction method that construction open caisson is most frequently with poor strata is not drainage method, but under water back cover is again heavy
The key of well construction.Because existing back cover under water is using rigid conduit method, this method complicated construction technique, high cost, water
Lower back cover effect is difficult to ensure that the application to drop shaft sinking construction receives certain restriction.Under water back cover is applied for open caisson construction at present
Work technique also occurs in that many problems in engineering construction, and such as leak, back cover difficulty of construction be larger, cost is high, and it is heavy to have impact on
The use of well construction method.
When carrying out underwater concrete back cover using rigid conduit method, back cover need to conduit radical and spacing should be made by conduit
Determined with radius and back cover area.The order of many tremie concretes is made each with there is no concrete sandwich as principle
The concrete that conduit is poured into a mould simultaneously keeps roughly the same absolute altitude.The first batch of amount of concrete of every catheter perfusion should be computed really
It is fixed.This method need to set up an operation platform and fix each conduit in well head, also remove after having constructed, and this virtually increased and applies
Work operation and construction cost.
Perfusion Underwater Concrete is that from the beginning of the open caisson the bottom of a pan, concrete consumption cost increases due to open caisson the bottom of a pan significant increase, in addition,
There is substantial amounts of silt particle in the open caisson the bottom of a pan when Underwater Concrete back cover is carried out, and concrete very capacity is mixed into silt particle and forms interlayer, causes back cover to construct
Difficulty is larger, back cover effect is poor.
The content of the invention
In order to solve the problems referred to above that above-mentioned bottom sealing method is present, the present invention proposes a kind of open caisson back cover side under water
Method and open caisson, to reduce difficulty of construction, improve back cover effect and reduce construction cost.
To achieve these goals, the invention provides a kind of open caisson bottom sealing method under water, it is characterised in that including following
Step：
Prefabricated well bore non-drainage subsidence is in place；
The open caisson the bottom of a pan is dug, rubble has been backfilled in the bottom of a pan and is formed filling filtering layer；
The concrete delivery pipe of automotive pump is put in well bore, the discharging opening distance filling filtering layer top surface 100- of concrete delivery pipe
300mm, decentralization concrete is embedded in the discharging opening of concrete delivery pipe in concrete, when concrete face reaches back cover concrete layer thickness, while concrete is transferred
Concrete delivery pipe is slowly moved horizontally, concrete face reaches back cover concrete layer thickness where concrete delivery pipe is moved to, in the same of concrete decentralization
When slowly move horizontally concrete delivery pipe, until fill filtering layer on formed one layer of back cover concrete layer.
Present invention also offers the open caisson that a kind of employing said method construction is obtained, including well bore and the pot below well bore
Bottom, it is characterised in that the bottom of a pan is provided with the filling filtering layer that one layer of backfill rubble is formed, filling filtering layer is provided with one layer of back cover concrete layer
Open caisson bottom sealing method and open caisson under water that the present invention is provided, one layer of filling filtering layer has been backfilled on the bottom of a pan with rubble,
During follow-up concrete is transferred and is formed back cover concrete layer, prevent silt particle from being mixed into back cover concrete layer, reduce difficulty of construction, bottom sealing
Effect more preferably, fills the volume that filtering layer reduces back cover concrete layer simultaneously, reduces concrete consumption, greatly reduces cost.Under concrete
During putting, the discharging opening of concrete delivery pipe is embedded in all the time in concrete, prevents water from entering in concrete so that the quality of back cover concrete layer is more
It is good.
Description of the drawings
Fig. 1 to Fig. 3 is open caisson bottom sealing method work progress state diagram under water；
Fig. 4 is the caisson structure schematic diagram that open caisson bottom sealing method construction under water is completed.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment
Referring to Fig. 1 to Fig. 3, open caisson bottom sealing method three below step under water.
(1). in place, the structure of well bore 1 is what common open caisson construction method was adopted to the prefabricated non-drainage subsidence of well bore 1
Well bore, position of the waterline 7 in well bore 1 be as shown in the figure in well.
(2). dug the open caisson the bottom of a pan 2 in the bottom of well bore 1, the bottom of a pan 2 as the bottom of a pan of common open caisson construction method, with broken
Stone backfills the bottom of a pan 2, forms filling filtering layer 3, fills the top surface of filtering layer 3 at the foot of the basil 11 of well bore 1, fills the top surface of filtering layer 3
It is substantially smooth.
(3). routinely Underwater Concrete Construction method, the concrete delivery pipe 5 of automotive pump is put in well bore 1, the discharging of concrete delivery pipe 5
The discharging opening of concrete delivery pipe 5 is embedded in concrete by top surface about 100-300mm, the preferably 200mm of mouth distance filling filtering layer 3, decentralization concrete
It is interior, when concrete face reaches back cover concrete layer thickness, concrete delivery pipe 5 is slowly moved horizontally while concrete is transferred, when concrete delivery pipe 5 is moved
Concrete face reaches back cover concrete layer thickness to where, and concrete delivery pipe is slowly moved horizontally while concrete is transferred, until filling filtering layer 3
One layer of back cover concrete layer 4 of upper formation.Whole back cover concrete layer 4 is in well bore 1.
Using above-mentioned open caisson, under water bottom sealing method constructs the open caisson for obtaining as shown in figure 4, including well bore 1 and under well bore 1
The bottom of a pan 2 of side, the bottom of a pan 2 is provided with the filling filtering layer 3 that one layer of backfill rubble is formed, and filling filtering layer 3 is provided with one layer of back cover concrete layer
4.At the foot of the basil 11 of well bore 1, the top surface for filling filtering layer 3 is substantially smooth, and back cover concrete layer 4 is in well bore 1 for the top surface of filling filtering layer 3
It is interior.
Open caisson of the present invention bottom sealing method under water, one layer of filling filtering layer has been backfilled on the bottom of a pan with rubble, transfers follow-up concrete
During forming back cover concrete layer, prevent silt particle from being mixed into back cover concrete layer, reduce difficulty of construction, bottom sealing effect more preferably, is filled
Filtering layer is filled out while reducing the volume of back cover concrete layer, concrete consumption is reduced, cost is greatly reduced.During concrete is transferred,
The discharging opening of concrete delivery pipe 5 is embedded in all the time in concrete, prevents water from entering in concrete so that the better quality of back cover concrete layer.Lead with rigidity
Tube method under water compare by back cover, and under water bottom sealing method does not need well head to set up an operation platform to open caisson of the present invention, solves for firm
Property tremie method under water bottom closing construction process is installed, removes the complicated difficult problem of wellhead platform construction, economic benefit is apparent.
Claims (7)
1. a kind of open caisson bottom sealing method under water, it is characterised in that comprise the following steps：
Prefabricated well bore non-drainage subsidence is in place；
The open caisson the bottom of a pan is dug, rubble has been backfilled in the bottom of a pan and is formed filling filtering layer；
The concrete delivery pipe of automotive pump is put in well bore, the discharging opening distance filling filtering layer top surface 100-300mm of concrete delivery pipe, under
Put concrete the discharging opening of concrete delivery pipe is embedded in concrete, when concrete face reaches back cover concrete layer thickness, slow level while concrete is transferred
Mobile concrete delivery pipe, concrete face reaches back cover concrete layer thickness where concrete delivery pipe is moved to, slow water while concrete is transferred
The dynamic concrete delivery pipe of translation, formed on filtering layer one layer of back cover concrete layer until filling.
2. open caisson according to claim 1 bottom sealing method under water, it is characterised in that the discharging opening distance filling of concrete delivery pipe
Filtering layer top surface 200mm.
3. open caisson according to claim 2 bottom sealing method under water, it is characterised in that the top surface of the filling filtering layer is in well bore
Basil foot at, back cover concrete layer is in well bore.
4. open caisson according to claim 3 bottom sealing method under water, it is characterised in that the top surface of the filling filtering layer is substantially put down
It is whole.
5. the open caisson for being obtained using the construction of claim 1 methods described, including well bore and the bottom of a pan below well bore, its feature is existed
In the bottom of a pan is provided with the filling filtering layer that one layer of backfill rubble is formed, and filling filtering layer is provided with one layer of back cover concrete layer.
6. open caisson according to claim 5, it is characterised in that the top surface of the filling filtering layer at the basil foot of well bore,
Back cover concrete layer is in well bore.
7. open caisson according to claim 6, it is characterised in that the top surface of the filling filtering layer is substantially smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611271520.1A CN106638647A (en) | 2016-12-31 | 2016-12-31 | Underwater sunk shaft sealing method and sunk shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611271520.1A CN106638647A (en) | 2016-12-31 | 2016-12-31 | Underwater sunk shaft sealing method and sunk shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106638647A true CN106638647A (en) | 2017-05-10 |
Family
ID=58839107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611271520.1A Pending CN106638647A (en) | 2016-12-31 | 2016-12-31 | Underwater sunk shaft sealing method and sunk shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106638647A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343115A (en) * | 2018-04-20 | 2018-07-31 | 山东省水利科学研究院 | A kind of assembled surface water water intake well |
| CN109137954A (en) * | 2018-07-23 | 2019-01-04 | 中交二航局第四工程有限公司 | A kind of underwater rubble using airlift suction dredger paves construction technology |
| CN110847202A (en) * | 2019-11-06 | 2020-02-28 | 春涛国际建筑有限公司 | Non-drainage sinking construction technology for multi-section open caisson low-strength well body |
| CN112554203A (en) * | 2020-12-03 | 2021-03-26 | 九冶建设有限公司 | Miniature open caisson prefabricated molding bed construction method for silt flow sand area with abundant underground water |
| CN113774942A (en) * | 2021-10-13 | 2021-12-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method for underwater bottom sealing of open caisson |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084336A (en) * | 2002-08-27 | 2004-03-18 | Chikoji Gakuen | Method for constructing foundation of oceanic wind power generator and underground structure of oceanic wind power generator |
| CN101696578A (en) * | 2009-09-28 | 2010-04-21 | 中铁八局集团第一工程有限公司 | Construction method for pouring foundations of main pylon piers of bridge on deep water inclined runway |
| CN102071663A (en) * | 2010-12-23 | 2011-05-25 | 中国建筑第二工程局有限公司 | Combined concrete rectangular sunk well basin and construction method thereof |
| CN103088838A (en) * | 2013-02-05 | 2013-05-08 | 中国十七冶集团有限公司 | Open caisson sealing bottom water drainage device and construction method |
| CN206457835U (en) * | 2016-12-31 | 2017-09-01 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of open caisson |
-
2016
- 2016-12-31 CN CN201611271520.1A patent/CN106638647A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004084336A (en) * | 2002-08-27 | 2004-03-18 | Chikoji Gakuen | Method for constructing foundation of oceanic wind power generator and underground structure of oceanic wind power generator |
| CN101696578A (en) * | 2009-09-28 | 2010-04-21 | 中铁八局集团第一工程有限公司 | Construction method for pouring foundations of main pylon piers of bridge on deep water inclined runway |
| CN102071663A (en) * | 2010-12-23 | 2011-05-25 | 中国建筑第二工程局有限公司 | Combined concrete rectangular sunk well basin and construction method thereof |
| CN103088838A (en) * | 2013-02-05 | 2013-05-08 | 中国十七冶集团有限公司 | Open caisson sealing bottom water drainage device and construction method |
| CN206457835U (en) * | 2016-12-31 | 2017-09-01 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of open caisson |
Non-Patent Citations (2)
| Title |
|---|
| 《混凝土工长一本通》编委会: "《混凝土工长一本通》", 中国建材工业出版社 * |
| 葛春辉: "《钢筋混凝土沉井结构设计施工手册》", 31 October 2004, 中国建筑工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343115A (en) * | 2018-04-20 | 2018-07-31 | 山东省水利科学研究院 | A kind of assembled surface water water intake well |
| CN109137954A (en) * | 2018-07-23 | 2019-01-04 | 中交二航局第四工程有限公司 | A kind of underwater rubble using airlift suction dredger paves construction technology |
| CN110847202A (en) * | 2019-11-06 | 2020-02-28 | 春涛国际建筑有限公司 | Non-drainage sinking construction technology for multi-section open caisson low-strength well body |
| CN112554203A (en) * | 2020-12-03 | 2021-03-26 | 九冶建设有限公司 | Miniature open caisson prefabricated molding bed construction method for silt flow sand area with abundant underground water |
| CN113774942A (en) * | 2021-10-13 | 2021-12-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method for underwater bottom sealing of open caisson |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |