CN110409381A - One kind being applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method - Google Patents
One kind being applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method Download PDFInfo
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- CN110409381A CN110409381A CN201910597078.9A CN201910597078A CN110409381A CN 110409381 A CN110409381 A CN 110409381A CN 201910597078 A CN201910597078 A CN 201910597078A CN 110409381 A CN110409381 A CN 110409381A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
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Abstract
The invention patent relates to one kind to be applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method, it includes the dam foundation basis for the different function structure for constituting rock, the seam of different number and different angles is formed between different masses dam foundation basis, the reverse extending line of a plurality of seam is intersected in seam central point, it is provided with since the position of seam central point and along the extending direction of seam the cover plate structure blocked for abutment joint, the flexible packing layer of inner sealing of the cover plate structure, the inside of the flexible filler layer is simultaneously provided with top PVC stick positioned at seam position, composite asphalt filled layer is filled with inside the gap of the seam, it is blocked in the bottom of the composite asphalt filled layer of seam by bottom PVC stick, the bottom PVC stick is fixed by W type built-in fitting.Quick repair process can be carried out according to the damaged condition of live seam face antiseepage cover plate connector, to also improve antiseepage safety when dam operation.
Description
Technical field
The present invention relates to one kind to be applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method, belongs to
In rock technical field of construction.
Background technique
Rock is made of rockfill and upstream impervious body, and middle and upper reaches impervious body includes toe board, panel, bulwark
And the structures such as connecting plate.And the time of these leakage preventing structures construction is different, the basis being located is also different, in order to meet structure
Between compatibility of deformation, usually parting can be carried out in the contact site of these structures, according to seam position in the panel and work
With, can be divided into the periphery fissure between panel and toe board, between panel vertical telescopic seam and panel and bulwark deformation
Seam.
It is arranged in conjunction with the sealing of domestic and international rock panel parting often by the end water (profile generally based on copper sheet
Sealing), middle sealing (generally PVC or rubber, consider it is easy for construction, part engineering cancelled in sealing) and upper sealing
(generally based on plastic filler and self-healing property material) forms.Plastic filler should have enough flowing sealing abilities, Ke Yi
Seam is flowed under water pressure and plays the role of sealing.Plastic filler top need to often be arranged antiseepage cover plate (plate) to plastic filler into
Row protection makes plastic filler flowing in seam, without overflowing.And vertical telescopic longitudinal joint and panel and toe board contact portion in panel
The periphery fissure of position and off-gauge " T " font and " ten " font seam formed with panel and bulwark contact site horizontal joint
Angle luffing range it is big, this is just in these seam crossing shape antiseepage cover plates at heteromorphic connector.In order to ensure upstream seepage prevention system
Reliability, these special-shaped antiseepage cover plates are processed in factory and are customized usually according to site dimension.
It is existing be arranged in seam face antiseepage cover plate heteromorphic connector there are the problem of have: firstly, since cover plate joint geometry
It is frequently not " T " font or " ten " font of standard, the luffing of angle is larger, it is difficult to carry out batch production and volume procurement,
This has to the practical parting situation according to live leakage preventing structure, then is process using certain moduli tool in factory；It transports again
It is installed to construction site.The heteromorphic connector of antiseepage cover plate is in factory process, the features such as period is long, haul distance is remote, at high cost, In
Adjustment poor operability in scene in work progress, along with the process of field erected antiseepage cover plate is complicated and and concrete joint
The associativity in face is poor, it is more likely that repairs as the weak part of upstream seepage prevention system, and in the dam operational process middle and later periods
Renaturation is poor.
Summary of the invention
The purpose of the present invention is to provide one kind to be applied to rock seam crossing antiseepage cover plate compromise joint structure, should
Connector can shorten the duration, reduce antiseepage cover plate opposite sex connector according to the different angle making in site between scene seam and seam
Cost；Since the connector is making in site, with regard to there is no conjugation problems when installation with concrete seam face, to increase
The antiseepage reliability of dam；In dam later period operational process, can according to the damaged condition of live seam face antiseepage cover plate connector,
Quick repair process is carried out, to also improve antiseepage safety when dam operation.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme: one kind being applied to rock seam
Locate antiseepage cover plate compromise joint structure, it includes the dam foundation basis for the different function structure for constituting rock, different masses dam
The seam of different number and different angles is formed between base basis, the reverse extending line of a plurality of seam is intersected in seam central point,
It is provided with since the position of seam central point and along the extending direction of seam the cover plate structure blocked for abutment joint,
The flexible packing layer of inner sealing of the cover plate structure, the inside of the flexible filler layer are simultaneously located at the setting of seam position
There is top PVC stick, composite asphalt filled layer is filled with inside the gap of the seam, at the bottom of the composite asphalt filled layer of seam
Portion is blocked by bottom PVC stick, and the bottom PVC stick is fixed by W type built-in fitting.
The cover plate structure includes the composite geo-membrane being laid on inside flexible filler layer, the outer layer of the composite geo-membrane
It is painted with the first one-component polyurea layer, is equipped with fiber web layer in the outer layer of the first one-component polyurea layer, the limit stratum reticulare
Outer layer is painted with the second one-component polyurea layer, and it is straight that the outer layer of second one-component polyurea layer is painted with multilayer one-component polyurea layer
To design thickness.
The flexible filler layer and cover plate structure of seam central point position form foreign steamer along the cutting plane of seam
Exterior feature is the cover plate structure of arc.
The top two sides of the seam are symmetrily processed with inclined-plane, and the inclined-plane is in contact and right with the profile of top PVC stick
It is limited.
The seam shares three, and α, β and γ of different angles are formed between three seams；It is respectively set in three seams
Have for constituting antiseepage cover plate compromise joint structure and being intersected in the first sealing strip, the second sealing strip and third of seam central point
Sealing strip.
The seam shares four, and α, β, γ and δ of different angles are formed between four seams；It is set respectively in four seams
It is equipped with for constituting antiseepage cover plate compromise joint structure and being intersected in the first sealing strip of seam central point, the second sealing strip,
Three sealing strips and the 4th sealing strip.
It is applied to the construction method of rock seam crossing antiseepage cover plate compromise joint structure described in any one, it is special
Sign be him the following steps are included:
It include the processing of toe board and rockfill basis step 1: carrying out excavation processing to dam foundation according to code requirement；
Step 2: completing the concreting of toe board and various connecting plates, and built-in fitting is installed as required, fixed and is protected
Shield is reinforced especially being equipped with the position of built-in fitting to concrete vibrating in casting concrete；
Step 3: carrying out consolidation grouting and later period toe board to plinth foundation after toe board concrete strength reaches some strength
Grout curtain；
Step 4: construct according to dam structure subregion to rockfill, including bed course area, transition region and rockfill area, rockfill
Construction should meet corresponding Regulations requirement；
Step 5: armored concrete panel is constructed as requested, in concrete construction after rockfill stabilization
In as requested opposite joint face handled, and built-in fitting is protected；
Step 6: sealing is installed at the top of abutment joint as required, including top PVC stick, rubber fastening band and flexible filler；
Step 7: carrying out antiseepage cover plate compromise joint construction to a plurality of seam crossing.
The specific implementation step of 7th step:
The first step carries out grinding process, polishing to first dam foundation basis and the second dam foundation base concrete face that constitute seam crossing
For width using seam as each 180-220mm of center line or so, grinding depth is at least 5mm, and then forms Sanding Area, the base of Sanding Area
Level answers flawless, hole, hollowing, loosening, voids and pits defect, and greasy dirt, dust, the dirt removal on buffed surface are done
Only；It is covered and is fixed using the flexible filler layer at the top of composite geo-membrane abutment joint；
The type energy index of second step, the brushing single-component polyurea on the flexible filler layer handled well, single-component polyurea should meet rule
The requirement of model DL/ T 5317；Primary brushing thickness is not more than lmm, and brushing thickness is uniform, and postorder brushing should be in preceding one of brushing table
It is carried out after face is dry, and subsequent each brush receives side by slope；
Third step spreads one layer of fiber web layer, fiber web layer, which is symmetrical with, to be connect after having brushed the second one-component polyurea layer on the whole
Seam, the equivalent width of width and Sanding Area, then on the whole brushing third layer, four layers ... until reaching design thickness.
4th step is brushed the antiseepage cover plate formed after the completion of construction and is protected, contact it should not with water in 2h,
External impacts should be prevented in 72h, the construction protection of polyureas should meet the requirement of specification DL/ T 5317.
The method have the advantages that:
1, construction, low cost, abnormity " T " font of Yi Xiufu and " ten " font antiseepage cover plate is facilitated to connect the invention proposes a kind of
Head.The connector can shorten the duration, it is special-shaped to reduce antiseepage cover plate according to the different angle making in site between scene seam and seam
The cost of connector；Since the connector is making in site, with regard to there is no conjugation problems when installation with concrete seam face, to increase
The antiseepage reliable of dam is added；It, can be according to the damage of live seam face antiseepage cover plate connector in dam later period operational process
Situation carries out quick repair process, so that the antiseepage also improved when dam operation is safety-type.
2, the present invention brushes the antiseepage cover plate heteromorphic connector structural shape formed by scene using one pack system brushing polyureas,
It is easy for construction, easy to operate, it reduces the period of factory's customization, save cost, cohered, increased by polyureas and the close of joint face
It is safety-type to improve rock antiseepage for the reliable of joint seal.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the cross cover plate compromise joint plan view of the present invention.
Fig. 2 is T font cover plate compromise joint plan view of the present invention.
Fig. 3 is the structure chart of seam profile of the present invention.
Fig. 4 is A partial enlarged view in Fig. 3 of the present invention.
In figure: seam 1, the first sealing strip 2, dam foundation basis 3, the second sealing strip 4, third sealing strip 5, seam central point 6,
W type built-in fitting 7, bottom PVC stick 8, composite asphalt filled layer 9, the second dam foundation basis 10, the first dam foundation basis 11, Sanding Area 12,
Inclined-plane 13, top PVC stick 14, flexible filler layer 16, cover plate structure 17, composite geo-membrane 18, the first one-component polyurea layer 19, limit
Position stratum reticulare 20, the second one-component polyurea layer 21.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1:
Picture 1-4, a kind of to be applied to rock seam crossing antiseepage cover plate compromise joint structure, it includes constituting panel enrockment
The dam foundation basis 3 of the different function structure on dam forms the seam 1 of different number and different angles between different masses dam foundation basis 3,
The reverse extending line of a plurality of seam 1 is intersected in seam central point 6, prolonging since the position of seam central point 6 and along seam 1
It stretches direction and is provided with the cover plate structure 17 blocked for abutment joint, the flexible filler of inner sealing of the cover plate structure 17
Layer 16, the inside of the flexible filler layer 16 are simultaneously provided with top PVC stick 14, the seam of the seam 1 positioned at 1 position of seam
It is filled with composite asphalt filled layer 9 inside gap, is blocked in the bottom of the composite asphalt filled layer 9 of seam 1 by bottom PVC stick 8,
The bottom PVC stick 8 is fixed by W type built-in fitting 7.By using the cover plate compromise joint structure of above structure, energy
The joint surface encapsulation process for enough adapting to the rock of different seam angles substitutes traditional factory customization cover plate of needing
Method is given, and then greatly improves the construction efficiency of seam, while ensure that the sealing effect of seam crossing.
Further, the cover plate structure 17 includes the composite geo-membrane 18 being laid on inside flexible filler layer 16, described
The outer layer of composite geo-membrane 18 is painted with the first one-component polyurea layer 19, is equipped with fibre in the outer layer of the first one-component polyurea layer 19
Stratum reticulare 20 is tieed up, the outer layer of the limit stratum reticulare 20 is painted with the second one-component polyurea layer 21, second one-component polyurea layer 21
Outer layer be painted with multilayer one-component polyurea layer until design thickness.Pass through the cover plate structure of above-mentioned field fabrication, Neng Gougen
According to the angle of seam, the arrangement and construction of clever sum, and then play good sealing effect.
Further, the flexible filler layer 16 of 6 position of seam central point and cover plate structure 17 are along seam 1
Cutting plane forms the cover plate structure that outer profile is arc.Flexible filler layer 16 can be played very well by above-mentioned cover plate structure
Sealing function.
Further, the top two sides of the seam 1 are symmetrily processed with inclined-plane 13, the inclined-plane 13 and top PVC stick 14
Profile be in contact and it limited.It is effectively sealed by the top that above-mentioned top PVC stick 14 is capable of abutment joint 1.
Further, the seam 1 shares three, and α, β and γ of different angles are formed between three seams 1；Three connect
Seam 1 on be separately provided for constitute antiseepage cover plate compromise joint structure and be intersected in seam central point 6 the first sealing strip 2,
Second sealing strip 4 and third sealing strip 5.By above-mentioned antiseepage cover plate compromise joint structure, it is adapted to above-mentioned seam knot
Structure.
Further, the seam 1 shares four, and α, β, γ and δ of different angles are formed between four seams 1；Four
It is separately provided for constituting antiseepage cover plate compromise joint structure in seam 1 and is intersected in the first sealing strip of seam central point 6
2, the second sealing strip 4, third sealing strip 5 and the 4th sealing strip 15.
Embodiment 2:
In the technical program rock middle and upper reaches leakage preventing structure for joint treatment, it is vertical to be specifically described vertical telescopic in panel
" T " font stitching the periphery fissure with panel and toe board contact site and being formed with panel and bulwark contact site horizontal joint
The structural shape and construction method of antiseepage cover plate heteromorphic connector at the top of " ten " font seam.
It is applied to the construction method of rock seam crossing antiseepage cover plate compromise joint structure described in any one, it is special
Sign be him the following steps are included:
It include the processing of toe board and rockfill basis step 1: carrying out excavation processing to dam foundation according to code requirement；
Step 2: completing the concreting of toe board and various connecting plates, and built-in fitting is installed as required, fixed and is protected
Shield is reinforced especially being equipped with the position of built-in fitting to concrete vibrating in casting concrete；
Step 3: carrying out consolidation grouting and later period toe board to plinth foundation after toe board concrete strength reaches some strength
Grout curtain；
Step 4: construct according to dam structure subregion to rockfill, including bed course area, transition region and rockfill area, rockfill
Construction should meet corresponding Regulations requirement；
Step 5: armored concrete panel is constructed as requested, in concrete construction after rockfill stabilization
In as requested opposite joint face handled, and built-in fitting is protected；
Step 6: 1 top sealing of abutment joint is installed as required, including top PVC stick 14, rubber fastening band and flexibility are filled out
Material；
Step 7: to antiseepage cover plate compromise joint construction is carried out at a plurality of seam 1.
The specific implementation step of 7th step:
The first step carries out grinding process to first dam foundation basis 11 constituted at seam 1 and basic 10 concrete surfaces of second dam foundation,
Polishing width is center line or so each 180-220mm with seam 1, and grinding depth is at least 5mm, and then forms Sanding Area 12, is beaten
Flawless, hole, hollowing, loosening, voids and pits defect are answered in the base face in mill area 12, and by the greasy dirt on buffed surface, dust, dirt
Object is removed clean；It is covered and is fixed using the flexible filler layer 16 at 18 abutment joint of composite geo-membrane, 1 top；
The type energy index of second step, the brushing single-component polyurea on the flexible filler layer 16 handled well, single-component polyurea should meet
The requirement of specification DL/ T 5317；Primary brushing thickness is not more than lmm, and brushing thickness is uniform, and postorder brushing should brush together preceding
It is carried out after dry tack free, and subsequent each brush receives side by slope；
Third step spreads one layer of fiber web layer 20 after having brushed the second one-component polyurea layer 21 on the whole, and fiber web layer 20 is symmetrical
In seam 1, the equivalent width of width and Sanding Area 12, then on the whole brushing third layer, four layers ... until reaching design thickness
Until.
4th step is brushed the antiseepage cover plate formed after the completion of construction and is protected, contact it should not with water in 2h,
External impacts should be prevented in 72h, the construction protection of polyureas should meet the requirement of specification DL/ T 5317.
Claims (8)
1. one kind is applied to rock seam crossing antiseepage cover plate compromise joint structure, it is characterised in that: it includes composition face
The dam foundation of the different function structure of sheetpile masonry dam is basic (3), and the different masses dam foundation forms different number and different folders between basic (3)
The reverse extending line of the seam (1) at angle, a plurality of seam (1) is intersected in seam central point (6), from the position of seam central point (6)
Start and is provided with the cover plate structure (17) blocked for abutment joint, the cover plate knot along the extending direction of seam (1)
The flexible packing layer of inner sealing (16) of structure (17), the inside of the flexible filler layer (16) are simultaneously located at seam (1) institute in place
It installs and is equipped with top PVC stick (14), composite asphalt filled layer (9) are filled with inside the gap of the seam (1), in seam (1)
Composite asphalt filled layer (9) bottom by bottom PVC stick (8) block, the bottom PVC stick (8) pass through W type built-in fitting
(7) it is fixed.
2. it is according to claim 1 a kind of applied to rock seam crossing antiseepage cover plate compromise joint structure, it is special
Sign is: the cover plate structure (17) includes being laid on the internal composite geo-membrane (18) of flexible filler layer (16), described compound
The outer layer of geomembrane (18) is painted with the first one-component polyurea layer (19), is equipped in the outer layer of the first one-component polyurea layer (19)
The outer layer of fiber web layer (20), limit stratum reticulare (20) is painted with the second one-component polyurea layer (21), second one pack system
The outer layer of polyurea layer (21) is painted with multilayer one-component polyurea layer until design thickness.
3. it is according to claim 1 a kind of applied to rock seam crossing antiseepage cover plate compromise joint structure, it is special
Sign is: the flexible filler layer (16) of seam central point (6) position and cover plate structure (17) cuing open along seam (1)
Section forms the cover plate structure that outer profile is arc.
4. it is according to claim 1 a kind of applied to rock seam crossing antiseepage cover plate compromise joint structure, it is special
Sign is: the top two sides of the seam (1) are symmetrily processed with inclined-plane (13), the inclined-plane (13) and top PVC stick (14)
Profile is in contact and limits to it.
5. it is according to claim 1 a kind of applied to rock seam crossing antiseepage cover plate compromise joint structure, it is special
Sign is: the seam (1) shares three, and α, β and γ of different angles are formed between three seams (1)；On three seams (1)
It is separately provided for constituting antiseepage cover plate compromise joint structure and is intersected in the first sealing strip (2) of seam central point (6), the
Two sealing strips (4) and third sealing strip (5).
6. it is according to claim 1 a kind of applied to rock seam crossing antiseepage cover plate compromise joint structure, it is special
Sign is: the seam (1) shares four, and α, β, γ and δ of different angles are formed between four seams (1)；Four seams (1)
On be separately provided for constitute antiseepage cover plate compromise joint structure and be intersected in seam central point (6) the first sealing strip (2),
Second sealing strip (4), third sealing strip (5) and the 4th sealing strip (15).
7. being applied to the construction of rock seam crossing antiseepage cover plate compromise joint structure described in claim 1-6 any one
Method, it is characterised in that he the following steps are included:
It include the processing of toe board and rockfill basis step 1: carrying out excavation processing to dam foundation according to code requirement；
Step 2: completing the concreting of toe board and various connecting plates, and built-in fitting is installed as required, fixed and is protected
Shield is reinforced especially being equipped with the position of built-in fitting to concrete vibrating in casting concrete；
Step 3: carrying out consolidation grouting and later period toe board to plinth foundation after toe board concrete strength reaches some strength
Grout curtain；
Step 4: construct according to dam structure subregion to rockfill, including bed course area, transition region and rockfill area, rockfill
Construction should meet corresponding Regulations requirement；
Step 5: armored concrete panel is constructed as requested, in concrete construction after rockfill stabilization
In as requested opposite joint face handled, and built-in fitting is protected；
Step 6: sealing is installed at the top of abutment joint (1) as required, including top PVC stick (14), rubber fastening band and soft
Property filler；
Step 7: to antiseepage cover plate compromise joint construction is carried out at a plurality of seam (1).
8. it is applied to the construction method of rock seam crossing antiseepage cover plate compromise joint structure according to claim 7,
It is characterized in that, the specific implementation step of the 7th step:
The first step beats first dam foundation basic (11) constituted at seam (1) and basic (10) concrete surface of second dam foundation
Mill processing, width of polishing are center line or so each 180-220mm with seam (1), and grinding depth is at least 5mm, and then is formed and beaten
It grinds area (12), flawless, hole, hollowing, loosening, voids and pits defect are answered in the base face of Sanding Area (12), and will be on buffed surface
Greasy dirt, dust, dirt removal it is clean；It is carried out using the flexible filler layer (16) at the top of composite geo-membrane (18) abutment joint (1)
It covers and fixed；
The type energy index of second step, the brushing single-component polyurea on the flexible filler layer (16) handled well, single-component polyurea should expire
The sufficient requirement of specification DL/ T 5317；Primary brushing thickness is not more than lmm, and brushing thickness is uniform, and postorder brushing should apply together preceding
It is carried out after brush dry tack free, and subsequent each brush receives side by slope；
Third step spreads one layer of fiber web layer (20), fiber web layer after having brushed the second one-component polyurea layer (21) on the whole
(20) be symmetrical with seam (1), the equivalent width of width and Sanding Area (12), then on the whole brushing third layer, four layers ... until
Until reaching design thickness；
4th step is brushed the antiseepage cover plate formed after the completion of construction and is protected, contact it should not with water in 2h, 72h
Interior to prevent external impacts, the construction protection of polyureas should meet the requirement of specification DL/ T 5317.
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| CN201910597078.9A CN110409381A (en) | 2019-07-04 | 2019-07-04 | One kind being applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method |
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| CN201910597078.9A CN110409381A (en) | 2019-07-04 | 2019-07-04 | One kind being applied to rock seam crossing antiseepage cover plate compromise joint structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389329A (en) * | 2021-07-20 | 2021-09-14 | 河南恒道中原轨道交通科技有限公司 | Gap cold bridge prevention structure of steel frame roof panel and construction method thereof |
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Application publication date: 20191105 |