CN202626948U - Polrvinyl chloride (PVC) membrane seepage-proofing dam wall - Google Patents
Polrvinyl chloride (PVC) membrane seepage-proofing dam wall Download PDFInfo
- Publication number
- CN202626948U CN202626948U CN 201220246221 CN201220246221U CN202626948U CN 202626948 U CN202626948 U CN 202626948U CN 201220246221 CN201220246221 CN 201220246221 CN 201220246221 U CN201220246221 U CN 201220246221U CN 202626948 U CN202626948 U CN 202626948U
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- CN
- China
- Prior art keywords
- wall
- dam
- proofing
- seepage
- polychloroethylene film
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a polrvinyl chloride (PVC) membrane seepage-proofing dam wall. PVC membranes are arranged in the center of a dam core wall. The structure of the seepage-proofing dam wall is that a sand bed layer is arranged at the bottom of the seepage-proofing dam wall, a PVC membrane seepage-proofing wall is arranged in the middle of the seepage-proofing dam wall, transition material layers are arranged on two sides of the PVC membrane seepage-proofing wall, a dam shell is arranged outside the transition material layers, and dry stone pitching is arranged on the surface of the dam shell. The PVC membranes in the PVC membrane seepage-proofing wall are arranged to rise in a folded mode according to a shape like a Chinese character 'zhi' along the vertical direction. A groove which is in a shape like a Chinese character 'ao' is formed on a wall head of the PVC membrane seepage-proofing dam wall through concrete pouring. An embedded bolt is arranged in the center of the middle of the groove in the shape like the Chinese character 'ao', the bolt is embedded into the concrete, a part of the bolt is exposed out of the concrete, and the length of the part of the bolt is 10 centimeters. The PVC membranes are fixed in the groove which is in the shape like the Chinese character 'ao' and arranged on the wall head. The problems that a core-wall rockfill dam is built in a place where proper seepage-proofing soil aggregate can not be found and settlement deformation occurs when the core-wall rockfill dam is built in a soft foundation are effectively solved, cost is saved, construction period is shorten, and good social economic benefits are produced.
Description
Technical field
The utility model belongs to water conservancy and hydropower civil works technical field, is specifically related to a kind of antiseepage bridge wall that places dam core-wall central authorities with polychloroethylene film.
Background technology
Loose rock dam are a kind of comparatively ancient and ripe dam types, adopt the anti-pattern that blends the antiseepage of clay core-wall of upstream face concrete slab more.Along with the fast development of geosynthetics technology, polychloroethylene film obtains paying attention in engineering circle because of having the superior anti-performance that blends good adaptation distortion, especially in hydraulic engineering.In decades, the new dam of polychloroethylene film in Tu Shidiba (comprising dyke, earth dam, sandy gravel dam, loose rock dam, stone masonry dam etc.) engineering be anti-to blend aspect such as old dam seepage reinforcing and has obtained many application at home and abroad, but basically all is used in dam face seepage.The utility model is specifically related to a kind ofly place the antiseepage bridge wall of core-wall central authorities with polychloroethylene film, is different from the scheme that Other Engineering adopts, and does not also see relevant report in the loose rock dam document of the same type at home.
Summary of the invention
The purpose of the utility model provides and a kind ofly places the antiseepage bridge wall of core-wall central authorities with polychloroethylene film, can practice thrift cost, shortens the construction period, produces good social and economic benefit.
The technical scheme of the utility model is: adopt polychloroethylene film, place dam core-wall central authorities, it constitutes: be sand cushion at the bottom of the dam; The centre is the polychloroethylene film impervious wall; Two of polychloroethylene film impervious walls are the transition bed of material, and the transition bed of material is outward a dam shell, and the dam shell surface is a dry stone pitching.
Polychloroethylene film in the polychloroethylene film impervious wall is arranged by " it " font on the vertical direction is folding and is risen.
The good effect of the utility model:
1, polychloroethylene film core-wall antiseepage body The application of new technique has improved efficiency of construction, has accelerated construction speed, practices thrift a large amount of durations.
2, adopt polychloroethylene film core-wall antiseepage body new technology, can the excavated material in stock ground in the reservoir area be made full use of in the last dam process, reduce the reservoir area and pollute.Also reduce the expropriation of land immigrant on the other hand, reduce the direct investment of engineering greatly.
3, effectively solve the problem of building core wall rockfill dam in the place that can not find box-like antiseepage earth material and reach the sedimentation and deformation problem of on soft foundation, building core wall rockfill dam.
4, polychloroethylene film places the method for core-wall central authorities antiseepage to have that cost is low, speed of application is fast, and it is little influenced by weather condition, can adapt to the characteristics of deformation of ground and differential settlement.
Description of drawings
Fig. 1 contains polychloroethylene film impervious wall dam body sectional schematic diagram for the utility model.
Fig. 2 is the polychloroethylene film impervious wall impervious wall the top of a wall structural representation of the utility model.
Fig. 3 is the polychloroethylene film and the bank slope joint character cut in bas-relief slot bolt arrangement sketch map of the utility model.
Fig. 4 is the folding sketch map of polychloroethylene film " it " font of the utility model.
Among the figure, at the bottom of the 1-dam sand cushion, 2-dam shell, the 3-transition bed of material, 4-polychloroethylene film impervious wall, 5-stone paving, 6-bridge wall central axis, 7-enrockment rib body, the 8-polychloroethylene film impervious wall the top of a wall, 9-sand.
The specific embodiment
The method of carrying out the bridge wall antiseepage with polychloroethylene film of the utility model is to adopt polychloroethylene film; Place dam core-wall central authorities; Constituting of antiseepage bridge wall: be sand cushion 1 at the bottom of the dam, the centre is a polychloroethylene film impervious wall 4, and two of polychloroethylene film impervious walls are the transition bed of material 3; The transition bed of material is outward a dam shell 2, and the dam shell surface is a stone paving 5.Polychloroethylene film in the polychloroethylene film impervious wall is arranged by " it " font on the vertical direction is folding and is risen, like Fig. 3, shown in Figure 4.The polychloroethylene film impervious wall the top of a wall 8 usefulness concrete castings build up the character cut in bas-relief groove, and the center is provided with a pre-embedded bolt in the middle of the character cut in bas-relief groove, and bolt gos deep into concrete and exposes 10cm, and polychloroethylene film is fixed in the character cut in bas-relief groove of the top of a wall.
The job practices of concrete cut is following:
1) the polychloroethylene film impervious wall the top of a wall is handled: the top of a wall of impervious wall is the weak location of impervious wall pouring quality; Antiseepage quality in order to ensure whole dam body; Build up character cut in bas-relief groove (as shown in Figure 2) with the C20 concrete casting, at the middle center spacing 50cm of character cut in bas-relief groove a length being set is the 60cm pre-embedded bolt, and bolt gos deep into concrete 50cm; Expose 10cm, exposed parts is a screw thread; With the pressing plate (adopt the Q235 steel, thickness is 4mm, and length 30cm, width are 20cm) of polychloroethylene film, the pressing plate quantity of polychloroethylene film is identical with the pre-embedded bolt number at impervious wall top.Each pressing plate all is furnished with onesize rubber, after the nut on the bolt tightens, polychloroethylene film is fixed in the character cut in bas-relief groove of the top of a wall, and fill concrete has further improved the anti-seepage effect at impervious wall the top of a wall place again.
2) two bank slope joints reason: in order to ensure the antiseepage ability in two bank slope positions, on rock slope grouting cover plate, done a big character cut in bas-relief groove, polychloroethylene film is folding in vertical direction to rise; Every 30cm ~ 40cm carries out once folding; Lay by " it " font, usefulness and pressing plate press with wide rubber strip again, use the pressing plate compacting again; Then cover with the C20 concrete backfill again, guarantee the barrier performance of the joint of polychloroethylene film and left bank side slope;
3) polychloroethylene film and wave wall bottom fitting are handled: the polychloroethylene film top embeds more than the 0.8m of concrete the inside, wave wall bottom, can guarantee that polychloroethylene film and wave wall, both sides bank slope and impervious wall form the antiseepage body of sealing.
When the composite polrvinyl chloride film is laid, should form wrinkle, and keep lax shape, to adapt to distortion.Composite polrvinyl chloride film and upstream and downstream clay material, transition material, stockpile have been put down construction simultaneously, to guarantee the contact seam face grinding compacting between the various material.
All the other job practicess partly of bridge wall are undertaken by existing method.
Claims (3)
1. polychloroethylene film antiseepage bridge wall; It is characterized in that placing dam core-wall central authorities with polychloroethylene film; Constituting of antiseepage bridge wall: be sand cushion at the bottom of the dam, the centre is the polychloroethylene film impervious wall, and two of polychloroethylene film impervious walls are the transition bed of material; The transition bed of material is outward a dam shell, and the dam shell surface is a dry stone pitching.
2. polychloroethylene film antiseepage bridge wall according to claim 1 is characterized in that the polychloroethylene film in the polychloroethylene film impervious wall is arranged by the folding rising of " it " font on the vertical direction.
3. polychloroethylene film antiseepage bridge wall according to claim 1; The top of a wall that it is characterized in that polychloroethylene film antiseepage bridge wall builds up the character cut in bas-relief groove with concrete casting; The center is provided with a pre-embedded bolt in the middle of the character cut in bas-relief groove; Bolt gos deep into concrete and exposes 10cm, and polychloroethylene film is fixed in the character cut in bas-relief groove of the top of a wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246221 CN202626948U (en) | 2012-05-29 | 2012-05-29 | Polrvinyl chloride (PVC) membrane seepage-proofing dam wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246221 CN202626948U (en) | 2012-05-29 | 2012-05-29 | Polrvinyl chloride (PVC) membrane seepage-proofing dam wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202626948U true CN202626948U (en) | 2012-12-26 |
Family
ID=47380159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246221 Expired - Fee Related CN202626948U (en) | 2012-05-29 | 2012-05-29 | Polrvinyl chloride (PVC) membrane seepage-proofing dam wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202626948U (en) |
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2012
- 2012-05-29 CN CN 201220246221 patent/CN202626948U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20180529 |