CN106223352A - Deep covering layer foundation anti-seepage wall construction - Google Patents
Deep covering layer foundation anti-seepage wall construction Download PDFInfo
- Publication number
- CN106223352A CN106223352A CN201610802341.XA CN201610802341A CN106223352A CN 106223352 A CN106223352 A CN 106223352A CN 201610802341 A CN201610802341 A CN 201610802341A CN 106223352 A CN106223352 A CN 106223352A
- Authority
- CN
- China
- Prior art keywords
- wall
- vertical gap
- covering layer
- piecemeal
- cut
- 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
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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
-
- 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
Abstract
The invention discloses a kind of deep covering layer foundation anti-seepage wall construction, belong to hydroelectric project design field, a kind of deep covering layer foundation anti-seepage wall construction avoiding concrete cut to produce crack problem is provided, including the concrete cut being arranged in deep covering layer, described concrete cut includes polylith piecemeal body of wall；A vertical gap is left between the vertical side of two pieces of adjacent piecemeal bodies of wall, it is filled with plastic filler in described vertical gap, and at least side of described vertical gap is provided with attached wall, described attached wall is completely covered in vertical gap, and the overlap joint that attached wall is close to the part of vertical gap both sides piecemeal body of wall simultaneously coordinates.The present invention has broken the mode that cut-pff wall uses in traditional approach integrative-structure, by concrete cut piecemeal is arranged, and reserved relative movement deformation or the vertical gap of sliding deformation, so can reduce body of wall internal stress size, and then cut-pff wall can be reduced produce the situation in crack.
Description
Technical field
The present invention relates to hydroelectric project design field, particularly relate to a kind of deep covering layer foundation anti-seepage wall construction.
Background technology
Deep covering layer is that China's hydroelectric project in recent years develops a kind of geological structure being commonly encountered, and it has structure pine
Dissipate, ulking thickness big, can be usually reached hundred meters, the most hundreds of rice；The features such as variation of lithological is big simultaneously, water penetration is strong, its composition
Based on drift boulder and cobble, block rubble, Extra-fine sand etc., granule composition is the thickest, and grading curve is all in being main body by coarse grain
Steep type structure, to the acinose texture of high order smooth pattern, lacks median diameter under normal circumstances；Therefore, in this type of address structure usually
It is susceptible to the situation of underground piping.
Building checkdam on this deep covering layer, its seepage deformation problem is the most prominent, therefore oozes prosecutor for the dam foundation
Case choose operation safety and the economic benefit being directly connected to engineering, be the key technology building dam on deep covering layer.
At present, cut-pff wall vertical seepage control is measure first-selected, most reliable.Divide 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；Undertake task by cut-pff wall to divide, have antiseepage, load-bearing, anti-shearing functions.Cut-pff wall is as underwater casting structure, by force
Degree is its important indicator；Owing to cut-pff wall is in construction and runtime, its stressing conditions is complicated, thus easily produces crack, especially
Head on dash cut-pff wall for very with high dam, large area.Due to cut-pff wall, it needs to realize antiseepage purpose, the most existing cut-pff wall
Typically using whole installation, the most whole cut-pff wall is one moulding by casting, avoids split to pour into a mould and naturally occurring seam with this
The situation of seepage is there is at gap.In the above cases, for preventing crack from producing, it is common practice to use armored concrete to prevent
Ooze wall, to resist its tension by strengthening its intensity；Or use plastic concrete cut-off wall and mortar cut-pff wall,
With by providing certain deflection to prevent crack from producing.But, the shortcoming of armored concrete cut-pff wall is that steel reinforcement cage processes
It is limited in scope, constructs complex, and relatively costly；And the strength of wall body of plastic concrete cut-off wall or mortar cut-pff wall is low,
Its opposing percolation ability is poor.
Summary of the invention
Present invention solves the technical problem that be to provide a kind of avoid concrete cut produce the deep of crack problem cover
Cap rock foundation anti-seepage wall construction, it can ensure the strength of wall body of cut-pff wall, and easy construction simultaneously, cost are relatively low.
The technical solution adopted for 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, described concrete cut includes polylith piecemeal body of wall, polylith piecemeal wall
Body forms the concrete cut of entirety by its vertical side after mutually being spliced；Vertical side at two pieces of adjacent piecemeal bodies of wall
Leave a vertical gap between limit, in described vertical gap, be filled with plastic filler, and in described vertical gap at least
Side is provided with attached wall, and described attached wall is completely covered in vertical gap, and attached wall simultaneously with vertical gap both sides piecemeal wall
The overlap joint that the part of body is close to coordinates.
Further: the thickness of described piecemeal body of wall is A, the width of described vertical gap is D, the width of described attached wall
For L；And have 0.5A≤D≤5A；2D≤L≤10D.
Further: the thickness of described attached wall is B, and have 0.5A≤B≤A.
Further: described plastic filler is clay, loess or sandy soil.
Further: be respectively arranged with attached wall in the both sides of described vertical gap.
Further: along infiltration direction, the upstream side in described vertical gap is provided with attached wall.
The invention has the beneficial effects as follows: broken the mode that in traditional approach, cut-pff wall is used integrative-structure, by inciting somebody to action
Concrete cut piecemeal is arranged, and reserves corresponding vertical gap simultaneously, and fills corresponding plastic filler in gap, this
Sample can allow adjacent piecemeal body of wall generation relative movement deformation or sliding deformation, can realize reducing the stress in body of wall big
Little, and finally reduce the situation in cut-pff wall generation crack.Additionally the concrete anti-seepage of the present invention within the walls can without arranging steel reinforcement cage,
Or arranging for steel reinforcement cage can be based on other purpose rather than in order to prevent concrete cut from producing crack.It addition, phase
For using plastic concrete cut-off wall or mortar cut-pff wall, concrete cut of the present invention, its strength of wall body is higher,
Resist self percolation ability higher；And its work progress of concrete cut of the present invention is simple, advantage of lower cost.
Accompanying drawing explanation
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；
Figure is labeled as: deep covering layer 1, piecemeal body of wall 2, vertical gap 3, attached wall 4, the thickness A of piecemeal body of wall, attached wall
Thickness B, the width D of vertical gap, the width L of attached wall.
Detailed description of the invention
The present invention is further described with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Figures 1 and 2, deep covering layer foundation anti-seepage wall construction of the present invention, deep including being arranged on
Concrete cut in cover layer 1, described concrete cut includes polylith piecemeal body of wall 2, and polylith piecemeal body of wall 2 is by it
Vertical side forms the concrete cut of entirety after mutually splicing；Between the vertical side of two pieces of adjacent piecemeal bodies of wall 2
Leave a vertical gap 3, in described vertical gap 3, be filled with plastic filler, and at least side of described vertical gap 3
Being provided with attached wall 4, described attached wall 4 is completely covered in vertical gap 3, and attached wall 4 simultaneously with vertical gap 3 both sides piecemeal wall
The overlap joint that the part of body 2 is close to coordinates.
Wherein, so-called plastic filler, refer to can occur the filler of certain deflection after stress, between filling it into vertically
After in gap 3, on the one hand on the other hand it can be allowed to occur when stress to playing certain anti-seepage effect at vertical gap 3
Certain deformation, allows for adjacent piecemeal body of wall 2 and relative movement deformation or sliding deformation occurs.Fill out as concrete plasticity
Material, can use relatively inexpensive, and be easy to clay, loess or sandy soil that job site directly obtains.
Wherein, concrete cut can use normal concrete cut-pff wall or use armored concrete cut-pff wall；This
In bright, that concrete cut forms after mutually being spliced by polylith piecemeal body of wall 2 rather than one-body molded, its connecting method be by
Polylith piecemeal body of wall 2 is mutually spliced by its vertical side, specifically can refer to shown in accompanying drawing.Due at adjacent two pieces of piecemeal walls
Leave a vertical gap 3 between the vertical side of body 2, in vertical gap 3, be filled with plastic filler simultaneously, therefore can allow phase
There is a certain amount of relative movement or the changing of the relative positions in adjacent two pieces of piecemeal bodies of wall 2, thus can avoid at the concrete using integrative-structure
The situation in crack it is susceptible in the case of cut-pff wall.
It addition, in the present invention, by the piecemeal body of wall 2 being overlapped on vertical gap 3 both sides that attached wall 4 is close to, logical
Cross the snug fit realization sealing of attached wall 4 and piecemeal body of wall 2, strengthen the anti-seepage effect to vertical gap 3 with this；General, attached
Wall 4 may be configured as on the piecemeal body of wall 2 being overlapped on both sides symmetrically.Under normal circumstances at least the one of described vertical gap 3
Side is provided with attached wall 4；It is furthermore preferred that along infiltration direction, attached wall 4 can be arranged at the upstream side of piecemeal body of wall 2；Wherein so-called
The upstream side of piecemeal body of wall 2, refers to the side that hydraulic pressure is higher, and i.e. seeping water is towards downstream from upstream side.So,
By arranging attached wall 4 at the upstream side of piecemeal body of wall 2, available hydraulic pressure applies certain pressure to attached wall 4, to strengthen attached wall 4
And the snug fit relation between piecemeal body of wall 2, and then strengthen anti-seepage effect.Certainly, it is furthermore preferred that also can described vertical between
The both sides of gap 3 are respectively arranged with attached wall 4, i.e. upstream side and downstream at piecemeal body of wall 2 and are respectively provided with attached wall 4.
More generally, the present invention can use and specifically arrange parameter as follows, to guarantee the anti-seepage effect at vertical gap 3:
The thickness of described piecemeal body of wall 2 is A, and the width of described vertical gap 3 is D, and the width of described attached wall 4 is L；And have 0.5A≤D
≤ 5A or also can determine by the practical distortion amount of vertical gap 3 both sides；2D≤L≤10D.It addition, for the thickness of attached wall 4
Degree, can be arranged further according to following: the thickness of described attached wall 4 is B, and has 0.5A≤B≤A.Such as, for concrete feelings
Condition, may be configured as: D=2A, L=3D=6A, B=0.7A.
General, in the present invention concrete cut, its general in the vertical direction of monolithic piecemeal body of wall 2 is integrated knot
Structure, and monolithic piecemeal body of wall 2 can be one-body molded by cast；And under normal circumstances can be by the base portion of concrete cut
Divide and be deep in the basement rock below deep covering layer 1.And attached wall 4 is usually arranged as identical with the height of concrete cut；And
And the two ends up and down of attached wall 4 align with concrete cut respectively.
Claims (6)
1. deep covering layer foundation anti-seepage wall construction, including the concrete cut being arranged in deep covering layer (1), its feature
Being: described concrete cut includes polylith piecemeal body of wall (2), polylith piecemeal body of wall (2) is mutually spelled by its vertical side
The concrete cut of entirety is formed after connecing；Leave between the vertical side of two pieces of adjacent piecemeal bodies of wall (2) one vertical between
Gap (3), is filled with plastic filler in described vertical gap (3), and is provided with at least side of described vertical gap (3)
Attached wall (4), described attached wall (4) is completely covered in vertical gap (3), and attached wall (4) divides with vertical gap (3) both sides simultaneously
The overlap joint that the part of block body of wall (2) is close to coordinates.
2. deep covering layer foundation anti-seepage wall construction as claimed in claim 1, it is characterised in that: described piecemeal body of wall (2)
Thickness is A, and the width of described vertical gap (3) is D, and the width of described attached wall (4) is L；And have 0.5A≤D≤5A；2D≤L≤
10D。
3. deep covering layer foundation anti-seepage wall construction as claimed in claim 2, it is characterised in that: the thickness of described attached wall (4)
For B, and there is 0.5A≤B≤A.
4. deep covering layer foundation anti-seepage wall construction as claimed in claim 1, it is characterised in that: described plastic filler is viscous
Soil, loess or sandy soil.
5. the deep covering layer foundation anti-seepage wall construction as according to any one of Claims 1-4, it is characterised in that: described
The both sides of vertical gap (3) are respectively arranged with attached wall (4).
6. the deep covering layer foundation anti-seepage wall construction as according to any one of Claims 1-4, it is characterised in that: along infiltration
Direction, the upstream side in described vertical gap (3) is provided with attached wall (4).
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 |
|---|---|
| CN106223352A true CN106223352A (en) | 2016-12-14 |
| CN106223352B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN106223352B (en) | 2018-06-15 |
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