CN107023026A - A kind of sealing bottom type caisson wall and construction method - Google Patents
A kind of sealing bottom type caisson wall and construction method Download PDFInfo
- Publication number
- CN107023026A CN107023026A CN201710407905.4A CN201710407905A CN107023026A CN 107023026 A CN107023026 A CN 107023026A CN 201710407905 A CN201710407905 A CN 201710407905A CN 107023026 A CN107023026 A CN 107023026A
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- China
- Prior art keywords
- water
- wall
- stop sheet
- delivery port
- borehole wall
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000002689 soil Substances 0.000 claims abstract description 25
- 238000009412 basement excavation Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000007569 slipcasting Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000001568 sexual effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
-
- 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
- E02D23/08—Lowering or sinking caissons
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)
- Revetment (AREA)
Abstract
The invention discloses a kind of sealing bottom type caisson wall and construction method, including the borehole wall, cutting shoe, bottom water-stop sheet, water inlet and delivery port, water inlet and delivery port are provided with controlled valve, High-Pressure Water is injected by water inlet and cuts the soil body under the water-stop sheet of borehole wall bottom, and it is mixed into muddy water with the soil body, muddy water is evacuated to earth's surface by delivery port, caisson wall gradually sinks under gravity and external force effect, up to wall submersion to projected depth, then slurries are reinforced by water inlet and delivery port injection, high-pressure slip-casting closure is carried out to the soil body under the water-stop sheet of bottom until the requirement of impervious sexual satisfaction, then bottom water-stop sheet and caisson wall bottom plate of constructing are removed.The present invention can prevent the outer water body of the borehole wall from penetrating into inside the borehole wall, and conventional subsea digging mode is simplified by water filling, pump process, and base plate quality is good, construction environment is good, high safety, progress are fast, it can be ensured that water rich strata underground excavation construction safety.
Description
Technical field
The invention belongs to underground structrue engineering field, more particularly to a kind of sealing bottom type caisson wall and construction method.
Background technology
Drop shaft sinking construction is, by the use of the borehole wall as supporting construction, soil excavation to be carried out inside it, while in the borehole wall itself
The frictional force between the borehole wall and the soil body is overcome gradually to sink under gravity or external force effect, until sinking down into designed elevation.Due to open caisson
Borehole wall good integrity, intensity is high, can bear larger external load, can ensure the stabilization of the crater wall soil body in work progress,
The engineering fields such as water conservancy and hydropower, road traffic, building construction, track traffic, foundation have a wide range of applications.
Soil excavation is typically excavated using artificial or underwater inside caisson wall, the nothing in the range of the excavation of stratum
During underground water, manually or mechanically operation can be used；When level of ground water is higher in the range of the excavation of stratum, the borehole wall typically must assure that
Internal water-filling, to ensure hydraulic balance inside and outside the borehole wall, prevents bottom plate and the borehole wall that inside and outside differential water pressures are caused from oozing water burst and drift sand thing
Therefore, and the soil body in hole must be excavated under water.So as to cause, efficiency of construction is relatively low, bottom plate lower floor has weak mud, to the borehole wall
Bring potential safety hazard steadily in the long term.
The content of the invention
Soil excavation efficiency is improved it is an object of the invention to provide one kind, it is to avoid underwater excavation operation, prevent hole bottom and well
Wall oozes water burst, it is ensured that the sealing bottom type caisson wall and construction method of construction safety.
To achieve the above object, sealing bottom type caisson wall of the invention, including the borehole wall, cutting shoe, bottom water-stop sheet；The bottom every
Water plate is fixed on cutting shoe upper end；The bottom water-stop sheet is provided with multiple water inlets and delivery port；The water inlet and delivery port are equal
Provided with controlled valve.
As an improvement, the sealing bottom type caisson wall can be the supporting construction of arbitrary shape, such as circular armored concrete
The borehole wall, square shaft steel casing etc..
As an improvement, the bottom water-stop sheet can be arbitrary shape, such as male conical（Upper male conical, lower male conical）, lower convex arc
Shape, recessed taper, flat shape etc..
As an improvement, the water inlet and delivery port are to be equally spaced.
The present invention also provides a kind of sealing bottom type caisson wall construction method, comprises the following steps：
A, an artificial lock section of being constructed in ground Shaft Excavation position, the sealing bottom type caisson wall is placed wherein；
B, in the case where water inlet injects High-Pressure Water, cutting bottom water-stop sheet the soil body and it is mixed be muddy water, from delivery port by muddy water
Earth's surface is evacuated to, washes away in digging process and ensures that the borehole wall is slow, vertical subsidence；
C, the spreading borehole wall when borehole wall crop out height is not enough, are washing away excavation and the borehole wall from open caisson under gravity, external force effect
The borehole wall will constantly sink, and stop excavating when wall submersion to projected depth；
Slurries are reinforced in D, the water inlet by bottom water-stop sheet and delivery port injection, and carrying out slip casting to Soft Soil Layer under the water-stop sheet of bottom adds
Gu, until Soft Soil Layer water percolating capacity is less than 50L/h, bottom water-stop sheet is then removed, caisson wall bottom plate of constructing.
Further, in step D, until Soft Soil Layer water percolating capacity is less than 10L/h, bottom water-stop sheet is then removed, open caisson of constructing
Borehole wall bottom plate.
Relative to existing caisson wall structure and construction technology, the present invention has the advantages that：
（1）Bottom water-stop sheet can be closed inside the Groundwater infiltration borehole wall, and drying operation environment is better than conventional subsea operating environment, hidden
Cover engineering construction quality and be easy to guarantee；
（2）Wash away to extract with muddy water by high-pressure water jet and soil excavation under the water-stop sheet of bottom can be achieved, operating efficiency is high；
（3）Its intensity and impermeability can be improved by grouting and reinforcing bottom water-stop sheet bottom weak soil, open caisson bottom plate matter can be ensured
Amount；
（4）The construction method technological process is simple and easy to apply, and high safety is with low cost, and construction speed is fast, with extensive reality
The property used.
Brief description of the drawings
Fig. 1 is the sealing bottom type caisson wall longitudinal sectional drawing of the present invention；
Fig. 2 is the sealing bottom type caisson wall transverse cross-sectional view of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further illustrated.
As shown in Figure 1-2, sealing bottom type caisson wall of the invention includes the borehole wall 1, cutting shoe 2, bottom water-stop sheet 3；The bottom every
Water plate 3 is fixed on the upper end of cutting shoe 2；The bottom water-stop sheet 3 is provided with multiple water inlets 4 and delivery port 5；The water inlet 4 and go out
The mouth of a river 5 is equally spaced, and is equipped with controlled valve.
The sealing bottom type caisson wall construction method of the present invention, comprises the following steps：
A, an artificial lock section of being constructed in ground Shaft Excavation position, well head lock section is placed on by the sealing bottom type caisson wall
On the soil body；
B, from water inlet 4 high-pressure water jet is injected, be mud mixture by the bottom soil layer scour of bottom water-stop sheet 3, while from water outlet
Mouth 5 extracts mud mixture out, so as to reach the purpose for excavating the soil body in well；
C, when the crop out of the borehole wall 1 height is not enough, the spreading borehole wall 1 is excavated and the borehole wall 1 is under gravity, external force effect washing away
The borehole wall 1 will constantly sink, and stop excavating when the borehole wall 1 sinks down into projected depth；
D, inserted with Grouting Pipe in the bottom soil body of bottom water-stop sheet 3 by water inlet 4 and delivery port 5, and inject reinforcing slurries, the bottom of to
3 times Soft Soil Layers of water-stop sheet are reinforced, until Soft Soil Layer water percolating capacity is less than 10L/h, then remove bottom water-stop sheet 3, open caisson of constructing
Borehole wall bottom plate.
As known by the technical knowledge, the present invention can be by the embodiment party of other essence or essential feature without departing from its spirit
Case is realized.Therefore, embodiment disclosed above is all merely illustrative for each side, is not only.For
For those skilled in the art, some improvement can also be made under the premise without departing from the principles of the invention, this
A little improve also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of sealing bottom type caisson wall, including the borehole wall（1）, cutting shoe（2）, it is characterised in that：Also include bottom water-stop sheet (3)；Institute
State bottom water-stop sheet（3）It is fixed on cutting shoe（2）Upper end, bottom water-stop sheet（3）Provided with multiple water inlets（4）And delivery port（5）；It is described
Water inlet（4）And delivery port（5）It is equipped with controlled valve.
2. sealing bottom type caisson wall according to claim 1, it is characterised in that：The borehole wall（1）For circular reinforced concrete
The native borehole wall or square shaft steel casing.
3. sealing bottom type caisson wall according to claim 1, it is characterised in that：The bottom water-stop sheet（3）For male conical, under
Convex, recessed taper or flat shape.
4. sealing bottom type caisson wall according to claim 1, it is characterised in that：The water inlet（4）And delivery port（5）For
It is equally spaced.
5. a kind of construction method of sealing bottom type caisson wall as claimed in claim 1, it is characterised in that comprise the following steps：
A, an artificial lock section of being constructed in ground Shaft Excavation position, the sealing bottom type caisson wall are placed wherein；
B, in water inlet（4）High-Pressure Water is injected, bottom water-stop sheet is cut（3）The lower soil body and it is mixed be muddy water, from delivery port
（5）Muddy water is evacuated to earth's surface；
C, work as the borehole wall（1）Spreading borehole wall when crop out height is not enough（1）, work as the borehole wall（1）Stop opening when sinking down into projected depth
Dig；
D, pass through water inlet（4）And delivery port（5）Slurries are reinforced in injection, to bottom water-stop sheet（3）Lower Soft Soil Layer carries out grouting and reinforcing,
Until Soft Soil Layer water percolating capacity is less than 50L/h, bottom water-stop sheet is then removed（3）, caisson wall bottom plate of constructing.
6. construction method according to claim 5, it is characterised in that：In the step D, when Soft Soil Layer water percolating capacity is less than
10L/h, then removes bottom water-stop sheet（3）, caisson wall bottom plate of constructing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407905.4A CN107023026A (en) | 2017-06-02 | 2017-06-02 | A kind of sealing bottom type caisson wall and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407905.4A CN107023026A (en) | 2017-06-02 | 2017-06-02 | A kind of sealing bottom type caisson wall and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107023026A true CN107023026A (en) | 2017-08-08 |
Family
ID=59529149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710407905.4A Pending CN107023026A (en) | 2017-06-02 | 2017-06-02 | A kind of sealing bottom type caisson wall and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107023026A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824469A (en) * | 2018-07-05 | 2018-11-16 | 浙江科技学院 | A kind of device and its reinforcement means for reinforcing bottom sealing |
| CN109083200A (en) * | 2018-08-16 | 2018-12-25 | 温州东联市政工程有限公司 | A kind of Submersed type inspection well and its construction method |
| CN109183824A (en) * | 2018-07-30 | 2019-01-11 | 神翼航空器科技（天津）有限公司 | Self-balancing caisson (well) and its technique |
| CN110952589A (en) * | 2019-12-04 | 2020-04-03 | 浙江大学 | Gravity type caisson foundation installed by injecting high-pressure water into mud through anchor teeth |
| CN111139855A (en) * | 2019-12-25 | 2020-05-12 | 孙华章 | Bottom concrete caisson capable of self-weight forced landing and construction method |
| CN111593755A (en) * | 2020-05-20 | 2020-08-28 | 叶香竹 | Open caisson |
| CN112252349A (en) * | 2020-09-11 | 2021-01-22 | 北京市市政二建设工程有限责任公司 | Sinking construction method without drainage for open caisson |
| CN114703921A (en) * | 2020-09-11 | 2022-07-05 | 北京住总集团有限责任公司 | Construction method for preventing surge based on temporary bottom sealing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150210A (en) * | 1995-11-15 | 1997-05-21 | 阎林森 | Sealing shaft sinking method |
| JP2008208533A (en) * | 2007-02-23 | 2008-09-11 | Daiho Constr Co Ltd | Caisson and its construction method |
| 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 |
| CN105386451A (en) * | 2015-10-16 | 2016-03-09 | 上海市基础工程集团有限公司 | Grouting device for preventing secondary sinking of open caisson |
| CN106245653A (en) * | 2016-08-09 | 2016-12-21 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN206110155U (en) * | 2016-10-14 | 2017-04-19 | 岩土科技股份有限公司 | Open caisson secondary back cover structure |
| CN206800431U (en) * | 2017-06-02 | 2017-12-26 | 中国矿业大学 | A kind of sealing bottom type caisson wall |
-
2017
- 2017-06-02 CN CN201710407905.4A patent/CN107023026A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1150210A (en) * | 1995-11-15 | 1997-05-21 | 阎林森 | Sealing shaft sinking method |
| JP2008208533A (en) * | 2007-02-23 | 2008-09-11 | Daiho Constr Co Ltd | Caisson and its construction method |
| 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 |
| CN105386451A (en) * | 2015-10-16 | 2016-03-09 | 上海市基础工程集团有限公司 | Grouting device for preventing secondary sinking of open caisson |
| CN106245653A (en) * | 2016-08-09 | 2016-12-21 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN206110155U (en) * | 2016-10-14 | 2017-04-19 | 岩土科技股份有限公司 | Open caisson secondary back cover structure |
| CN206800431U (en) * | 2017-06-02 | 2017-12-26 | 中国矿业大学 | A kind of sealing bottom type caisson wall |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824469A (en) * | 2018-07-05 | 2018-11-16 | 浙江科技学院 | A kind of device and its reinforcement means for reinforcing bottom sealing |
| CN109183824A (en) * | 2018-07-30 | 2019-01-11 | 神翼航空器科技（天津）有限公司 | Self-balancing caisson (well) and its technique |
| CN109083200A (en) * | 2018-08-16 | 2018-12-25 | 温州东联市政工程有限公司 | A kind of Submersed type inspection well and its construction method |
| CN110952589A (en) * | 2019-12-04 | 2020-04-03 | 浙江大学 | Gravity type caisson foundation installed by injecting high-pressure water into mud through anchor teeth |
| CN111139855A (en) * | 2019-12-25 | 2020-05-12 | 孙华章 | Bottom concrete caisson capable of self-weight forced landing and construction method |
| CN111593755A (en) * | 2020-05-20 | 2020-08-28 | 叶香竹 | Open caisson |
| CN112252349A (en) * | 2020-09-11 | 2021-01-22 | 北京市市政二建设工程有限责任公司 | Sinking construction method without drainage for open caisson |
| CN114703921A (en) * | 2020-09-11 | 2022-07-05 | 北京住总集团有限责任公司 | Construction method for preventing surge based on temporary bottom sealing structure |
| CN114703921B (en) * | 2020-09-11 | 2024-05-28 | 北京住总集团有限责任公司 | Construction method for preventing surging based on temporary back cover structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 221116 No. 1 University Road, copper mountain, Jiangsu, Xuzhou Applicant after: CHINA University OF MINING AND TECHNOLOGY Address before: 221116 Xuzhou University Road, Jiangsu, No. 1 Applicant before: CHINA University OF MINING AND TECHNOLOGY |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170808 |
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| RJ01 | Rejection of invention patent application after publication |