CN106223352B - Deep covering layer foundation anti-seepage wall construction - Google Patents
Deep covering layer foundation anti-seepage wall construction Download PDFInfo
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- CN106223352B CN106223352B CN201610802341.XA CN201610802341A CN106223352B CN 106223352 B CN106223352 B CN 106223352B CN 201610802341 A CN201610802341 A CN 201610802341A CN 106223352 B CN106223352 B CN 106223352B
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- wall
- piecemeal
- vertical gap
- covering layer
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- 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
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- 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
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
- E02D19/185—Joints between sheets constituting the sealing aprons
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (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 Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of deep covering layer foundation anti-seepage wall constructions, belong to hydroelectric project design field, a kind of deep covering layer foundation anti-seepage wall construction that concrete cut is avoided to generate crack problem is provided, including the concrete cut being arranged in deep covering layer, the concrete cut includes polylith piecemeal wall；There are a vertical gaps between the vertical side of two pieces of adjacent piecemeal walls, plastic filler is filled in the vertical gap, and at least side of the vertical gap is provided with attached wall, the attached wall is completely covered in vertical gap, and the overlap joint cooperation that attached wall is close to simultaneously with the part of vertical gap both sides piecemeal wall.The present invention has broken cut-pff wall in traditional approach by the way of integral structure, by the way that concrete cut piecemeal is set, and the vertical gap of reserved relative movement deformation or sliding deformation, wall internal stress size can be reduced in this way, and then can reduce the situation that cut-pff wall generates crack.
Description
Technical field
The present invention relates to hydroelectric project design field more particularly to a kind of deep covering layer foundation anti-seepage wall constructions.
Background technology
Deep covering layer is a kind of geological structure that China's hydroelectric project exploitation in recent years is commonly encountered, it has structure pine
Dissipate, ulking thickness it is big, can be usually reached hundred meters or even hundreds of meters；The features such as variation of lithological is big simultaneously, water penetration is strong, ingredient
To float based on boulder and cobble, block rubble, Extra-fine sand etc., particle composition is partially coarse, and grading curve is in by based on coarse grain
Steep type structure lacks median diameter under normal conditions to the acinose texture of high order smooth pattern；Therefore, in such address structure usually
There is a situation where buried pipe gushes.
Checkdam is built on this deep covering layer, seepage deformation problem is more prominent, therefore oozes prosecutor for the dam foundation
The selection of case is directly related to the operational safety and economic benefit of engineering, is the key technology that dam is built on deep covering layer.
At present, cut-pff wall vertical seepage control is preferred, most reliable measure.It is divided by cut-off wall material, concrete for hydraulic structure antiseepage
Wall mainly have normal concrete cut-pff wall, armored concrete cut-pff wall, Clay-concrete cut-pff wall, plastic concrete cut-off wall and
Mortar cut-pff wall；Task point is undertaken by cut-pff wall, there is antiseepage, load-bearing, anti-shearing functions.Cut-pff wall is as underwater casting structure, by force
Degree is its important indicator；Since cut-pff wall is in construction and runtime, stressing conditions complexity, thus crack is easily generated, especially
Water blocking cut-pff wall is headed on as very using high dam, large area.Due to cut-pff wall, it needs to realize antiseepage purpose, existing cut-pff wall
Generally using whole installation, i.e., entire cut-pff wall is integrated moulding by casting, split is avoided to pour into a mould and naturally occurring seam with this
There is a situation where leak at gap.In the above cases, to prevent crack from generating, it is common practice to be prevented using armored concrete
Wall is oozed, to resist the pulling force that it is subject to by enhancing its intensity；Or plastic concrete cut-off wall and mortar cut-pff wall are used,
To prevent crack from generating by providing certain deflection.However, the shortcomings that armored concrete cut-pff wall is steel reinforcement cage processing
It is limited in scope, construction is complex, and cost is higher；And the strength of wall body of plastic concrete cut-off wall or mortar cut-pff wall is low,
It is poor that it resists percolation ability.
Invention content
Concrete cut generation the deep of crack problem is avoided to cover the technical problem to be solved by the present invention is to provide a kind of
Cap rock foundation anti-seepage wall construction, can ensure the strength of wall body of cut-pff wall, at the same it is easy for construction, cost is relatively low.
The technical solution adopted by the present invention to solve the technical problems is：Deep covering layer foundation anti-seepage wall construction, including
The concrete cut being arranged in deep covering layer, the concrete cut include polylith piecemeal wall, polylith piecemeal wall
Body forms whole concrete cut after mutually splicing by its vertical side；In the vertical side of two pieces of adjacent piecemeal walls
There are a vertical gap between side, filled with plastic filler in the vertical gap, and in the vertical gap at least
Side is provided with attached wall, and the attached wall is completely covered in vertical gap, and attached wall simultaneously with vertical gap both sides piecemeal wall
The overlap joint cooperation that the part of body is close to.
It is further：The thickness of the piecemeal wall is A, and the width of the vertical gap is D, the width of the attached wall
For L；And there is 0.5A≤D≤5A；2D≤L≤10D.
It is further：The thickness of the attached wall is B, and has 0.5A≤B≤A.
It is further：The plastic filler is clay, loess or sandy soil.
It is further：Attached wall is respectively arranged in the both sides of the vertical gap.
It is further：Along infiltration direction, the upstream side of the vertical gap is provided with attached wall.
The beneficial effects of the invention are as follows：Broken cut-pff wall in traditional approach by the way of integral structure, pass through by
Concrete cut piecemeal is set, while reserves corresponding vertical gap, and corresponding plastic filler is filled in gap, this
Sample is that relative movement deformation or sliding deformation occur for permissible adjacent piecemeal wall, it can be achieved that the stress reduced in wall is big
It is small, and finally reduce the situation that cut-pff wall generates crack.In addition concrete anti-seepage of the invention can need not set steel reinforcement cage within the walls,
Or other purposes rather than in order to prevent concrete cut generation crack can be based on for the setting of steel reinforcement cage.In addition, phase
For use plastic concrete cut-off wall or mortar cut-pff wall, concrete cut of the present invention, strength of wall body higher,
It is stronger to resist itself percolation ability；And its work progress of concrete cut of the present invention is simple, advantage of lower cost.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of deep covering layer foundation anti-seepage wall construction of the present invention；
Fig. 2 is the dimension mark schematic diagram of each structure in Fig. 1；
In figure label for：Deep covering layer 1, piecemeal wall 2, vertical gap 3, attached wall 4, piecemeal wall thickness A, attached wall
Thickness B, vertical gap width D, the width L of attached wall.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 and 2, deep covering layer foundation anti-seepage wall construction of the present invention, it is deep including being arranged on
Concrete cut in coating 1, the concrete cut include polylith piecemeal wall 2, and polylith piecemeal wall 2 passes through it
Vertical side forms whole concrete cut after mutually splicing；Between the vertical side of two pieces of adjacent piecemeal walls 2
There are a vertical gap 3, filled with plastic filler in the vertical gap 3, and in at least side of the vertical gap 3
Be provided with attached wall 4, the attached wall 4 is completely covered in vertical gap 3, and attached wall 4 simultaneously with 3 both sides piecemeal wall of vertical gap
The overlap joint cooperation that the part of body 2 is close to.
Wherein, so-called plastic filler refers to occur after stress the filler of certain deflection, between filling it into vertically
After in gap 3, on the one hand on the other hand it can be allowed to occur in stress to playing certain anti-seepage effect at vertical gap 3
Certain deformation allows for adjacent piecemeal wall 2 that relative movement deformation or sliding deformation occurs.It is filled out as specific plasticity
Clay, loess or sandy soil relatively inexpensive, and directly obtained convenient for construction site can be used in material.
Wherein, concrete cut can be used normal concrete cut-pff wall or use armored concrete cut-pff wall；This hair
In bright, concrete cut by polylith piecemeal wall 2 mutually splicing after form rather than be integrally formed, connecting method be by
Polylith piecemeal wall 2 is mutually spliced by its vertical side, specifically can refer to shown in attached drawing.Due in adjacent two pieces of piecemeal walls
There are a vertical gap 3 between the vertical side of body 2, while filled with plastic filler in vertical gap 3, therefore allow phase
A certain amount of relative movement or the changing of the relative positions occur for adjacent two pieces of piecemeal walls 2, thus can avoid in the concrete using integral structure
There is a situation where cracks in the case of cut-pff wall.
In addition, in the present invention, being overlapped on the piecemeal wall 2 of 3 both sides of vertical gap by be close to attached wall 4, lead to
It crosses attached wall 4 and the snug fit of piecemeal wall 2 realizes sealing, enhance the anti-seepage effect to vertical gap 3 with this；It is generally, attached
Wall 4 may be configured as being in symmetrically to be overlapped on the piecemeal wall 2 of both sides.Under normal conditions at least the one of the vertical gap 3
Side is provided with attached wall 4；It is furthermore preferred that along infiltration direction, can attached wall 4 be set in the upstream side of piecemeal wall 2；It is wherein so-called
The upstream side of piecemeal wall 2 refers to the higher side of hydraulic pressure, that is, it is from the upstream side toward the downstream side to seep water.In this way,
By setting attached wall 4 in the upstream side of piecemeal wall 2, apply certain pressure to attached wall 4 using hydraulic pressure, to enhance attached wall 4
Snug fit relationship between piecemeal wall 2, and then enhance anti-seepage effect.Certainly, it is furthermore preferred that can also it is described it is vertical between
The both sides of gap 3 are respectively arranged with attached wall 4, i.e., are respectively provided with attached wall 4 in the upstream side of piecemeal wall 2 and downstream side.
More generally, following specific arrange parameter can be used in the present invention, to ensure the anti-seepage effect at vertical gap 3：
The thickness of the piecemeal wall 2 is A, and the width of the vertical gap 3 is D, and the width of the attached wall 4 is L；And there is 0.5A≤D
≤ 5A can also be determined by the practical distortion amount of 3 both sides of vertical gap；2D≤L≤10D.In addition, the thickness for attached wall 4
Degree, can be further according to following setting：The thickness of the attached wall 4 is B, and has 0.5A≤B≤A.For example, for a specific feelings
Condition may be configured as：D=2A, L=3D=6A, B=0.7A.
Generally, the concrete cut in the present invention, monolithic piecemeal wall 2 is generally integrated knot in the vertical direction
Structure, and monolithic piecemeal wall 2 can be integrally formed by pouring into a mould；It and under normal conditions can be by the base portion of concrete cut
Divide in the basement rock for being deep into 1 lower section of deep covering layer.And attached wall 4 be usually arranged as it is identical with the height of concrete cut；And
And the upper and lower ends of attached wall 4 are aligned respectively with concrete cut.
Claims (5)
1. deep covering layer foundation anti-seepage wall construction, including the concrete cut being arranged in deep covering layer (1), feature
It is：The concrete cut includes polylith piecemeal wall (2), and polylith piecemeal wall (2) is mutually spelled by its vertical side
Whole concrete cut is formed after connecing；Between the vertical side of two pieces of adjacent piecemeal walls (2) there are one it is vertical between
Gap (3) filled with plastic filler in the vertical gap (3), and is provided in at least side of the vertical gap (3)
Attached wall (4), the attached wall (4) are completely covered in vertical gap (3), and attached wall (4) and meanwhile with vertical gap (3) both sides point
The overlap joint cooperation that the part of block wall (2) is close to；The thickness of the piecemeal wall (2) be A, the width of the vertical gap (3)
For D, the width of the attached wall (4) is L；And there is 0.5A≤D≤5A；2D≤L≤10D.
2. deep covering layer foundation anti-seepage wall construction as described in claim 1, it is characterised in that：The thickness of the attached wall (4)
For B, and there is 0.5A≤B≤A.
3. deep covering layer foundation anti-seepage wall construction as described in claim 1, it is characterised in that：The plastic filler is viscous
Soil, loess or sandy soil.
4. deep covering layer foundation anti-seepage wall construction as claimed any one in claims 1 to 3, it is characterised in that：Described
The both sides of vertical gap (3) are respectively arranged with attached wall (4).
5. deep covering layer foundation anti-seepage wall construction as claimed any one in claims 1 to 3, it is characterised in that：Along infiltration
Direction is provided with attached wall (4) in the upstream side of the vertical gap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802341.XA CN106223352B (en) | 2016-09-05 | 2016-09-05 | Deep covering layer foundation anti-seepage wall construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802341.XA CN106223352B (en) | 2016-09-05 | 2016-09-05 | Deep covering layer foundation anti-seepage wall construction |
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| Publication Number | Publication Date |
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| CN106223352A CN106223352A (en) | 2016-12-14 |
| CN106223352B true CN106223352B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610802341.XA Active CN106223352B (en) | 2016-09-05 | 2016-09-05 | Deep covering layer foundation anti-seepage wall construction |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110424435A (en) * | 2019-08-27 | 2019-11-08 | 中水北方勘测设计研究有限责任公司 | For the cut-pff wall in deep covering layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2283994A2 (en) * | 1974-09-06 | 1976-04-02 | Soletanche | Forming sealed wall in ground - by coating panels which have seal strips in slots in adjacent vert. edges |
| JPH0960023A (en) * | 1995-08-23 | 1997-03-04 | Mitsui Home Co Ltd | Sealing method for junction of concrete member |
| CN202830968U (en) * | 2012-08-21 | 2013-03-27 | 浙江工业大学 | Building blocks and prefabricated underground continuous wall |
| CN203905064U (en) * | 2014-06-03 | 2014-10-29 | 金陵科技学院 | Underground diaphragm wall tooth-shaped connector |
| CN204098017U (en) * | 2014-09-04 | 2015-01-14 | 中国建筑股份有限公司 | A kind of novel full coercion underground continuous wall |
| CN204940246U (en) * | 2015-08-31 | 2016-01-06 | 中国建筑股份有限公司 | A kind of horizontal-top pushing compact form coercion underground continuous wall system |
| CN205999912U (en) * | 2016-09-05 | 2017-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Deep covering layer foundation anti-seepage wall construction |
-
2016
- 2016-09-05 CN CN201610802341.XA patent/CN106223352B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2283994A2 (en) * | 1974-09-06 | 1976-04-02 | Soletanche | Forming sealed wall in ground - by coating panels which have seal strips in slots in adjacent vert. edges |
| JPH0960023A (en) * | 1995-08-23 | 1997-03-04 | Mitsui Home Co Ltd | Sealing method for junction of concrete member |
| CN202830968U (en) * | 2012-08-21 | 2013-03-27 | 浙江工业大学 | Building blocks and prefabricated underground continuous wall |
| CN203905064U (en) * | 2014-06-03 | 2014-10-29 | 金陵科技学院 | Underground diaphragm wall tooth-shaped connector |
| CN204098017U (en) * | 2014-09-04 | 2015-01-14 | 中国建筑股份有限公司 | A kind of novel full coercion underground continuous wall |
| CN204940246U (en) * | 2015-08-31 | 2016-01-06 | 中国建筑股份有限公司 | A kind of horizontal-top pushing compact form coercion underground continuous wall system |
| CN205999912U (en) * | 2016-09-05 | 2017-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Deep covering layer foundation anti-seepage wall construction |
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| CN106223352A (en) | 2016-12-14 |
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