CN214301579U - Diaphragm wall and toe board water pressure canned type flexible stagnant water structure - Google Patents
Diaphragm wall and toe board water pressure canned type flexible stagnant water structure Download PDFInfo
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- CN214301579U CN214301579U CN202022894869.9U CN202022894869U CN214301579U CN 214301579 U CN214301579 U CN 214301579U CN 202022894869 U CN202022894869 U CN 202022894869U CN 214301579 U CN214301579 U CN 214301579U
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Abstract
The utility model discloses a flexible stagnant water structure of cut-off wall and toe board water pressure canned type can improve cut-off wall and toe board coupling part's prevention of seepage reliability and big deformation adaptability by a wide margin. The flexible stagnant water structure of water pressure canned type includes stagnant water copper sheet, chloroprene rubber stick and plasticity and packs, and the chloroprene rubber stick is arranged on the top of the structure seam between toe board and top concrete, and the right angle part between top concrete downstream side and the toe board top surface packs plasticity and forms the swell structure, the stagnant water copper sheet set up in the structure seam, and the stagnant water copper sheet half is pre-buried at top concrete downstream side, and another half is pour to the toe board in. The plastic filler is adopted to fill the structural joint under the action of water pressure extrusion, so that the water stopping effect is achieved; the water stopping capacity is increased along with the increase of the water pressure, so that high-water-head seepage-proofing water stopping is realized; on one hand, the water stop copper sheet can play a role in preventing seepage and stopping water, and further assists the chloroprene rubber rod to ensure the deformation space of the plastic filler.
Description
Technical Field
The utility model relates to a cut-off wall and flexible stagnant water structure of toe board water pressure canned type is applicable to the difference after the construction and subsides great, the basis adopts the concrete panel rock-fill dam engineering of cut-off wall prevention of seepage or has the prevention of seepage stagnant water structure that similar function required.
Background
When the dam foundation is a permeable soil layer, an impervious wall is generally adopted for seepage prevention on the dam foundation in order to improve the seepage prevention effect, and the dam foundation is connected with the seepage prevention structure of the dam body. For concrete faced rock-fill dams, the diaphragm walls are typically connected to the toe boards and the connecting portions may be provided with one or more water stop structures. The foundation settlement caused by dam body structure construction and water storage is caused, but the impervious wall belongs to a rigid structure, the foundation at the bottom is positioned at a deeper part of a riverbed, even stable bedrock, the settlement of the impervious wall is relatively weak, and the settlement difference occurs at the connecting part of the impervious wall and the dam body impervious structure. For concrete faced rock-fill dams, this differential settlement occurs primarily during impoundment. In order to prevent the water stop from destroying and failing due to the dislocation and the opening of the structural seam caused by the settlement difference, the adaptability of the water stop is increased by adjusting the height of the nose of the water stop, and the transition is performed by arranging a connecting plate between the impervious wall and the toe board. When the engineering with larger foundation settlement difference is carried out, the reliability of the treatment measures is poor, and the main performance is that the impervious wall and the connecting plate are both rigid structures, and the water-stopping copper sheet, especially the rubber water-stopping sheet, is extremely easy to be damaged in the process of dislocation deformation; after the connecting plate stores water, the connecting plate is subjected to great sedimentation deformation under the action of water pressure, and the function of sedimentation difference of the transition impervious wall and the dam body impervious structure is extremely limited; two structural seams exist from the impervious wall to the toe board, and the impervious weak link is increased.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the above-mentioned weak point of stagnant water structure between cut-off wall and the toe board among the prior art, provide a cut-off wall and the flexible stagnant water structure of toe board water pressure canned type, can improve cut-off wall and toe board coupling part's prevention of seepage reliability and big deformation adaptability by a wide margin.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a flexible stagnant water structure of impervious wall and toe board water pressure canned type, the flexible stagnant water structure of water pressure canned type set up the structure seam department between the top concrete of toe board and impervious wall of concrete panel rock-fill dam, the flexible stagnant water structure of water pressure canned type includes that stagnant water copper sheet, chloroprene rubber stick and plasticity are packed, and the chloroprene rubber stick is arranged on the top of the structure seam between toe board and top concrete, and the right angle part between top concrete downstream side and the toe board top surface packs the plasticity and packs and form the bulge structure, stagnant water copper sheet set up in the structure seam, and stagnant water copper sheet half width of cloth is pre-buried in top concrete downstream side, and another half width of cloth is pour to the toe board in.
Preferably, the water-stopping copper sheet is horizontally placed, the edges of two sides of the water-stopping copper sheet are bent upwards and tilted, and the central line part is sunken downwards to form a concave structure; the width of the sunken part of the water stop copper sheet is equal to that of the structural seam.
Preferably, the recess of the water-stop copper sheet is filled with a foam sheet having the same width as the recess.
Preferably, the sunken part of the water stop copper sheet is positioned in the structural seam, and a gap material is filled in a gap part in the structural seam.
Preferably, the gap material is a bituminous pinewood plate or a rubber plate.
Preferably, the toe board upstream is with the notch that the concrete contact side top was reserved, the cross-sectional shape of notch is triangle-shaped, chloroprene rubber stick arranges in the notch.
Preferably, a rubber cover sheet is adhered to the surface of the bulge structure of the plastic filler, and two side edges of the rubber cover sheet are respectively connected with the top concrete and the toe board in an anchoring manner.
Preferably, the rubber cover plate is anchored on both sides to the top concrete and toe board by bolts, flats and nuts.
Preferably, the outside of the hydraulic sealing type flexible water stop structure is sequentially provided with silt and ballast for protection.
The utility model has the advantages that: the plastic filler is adopted to fill the structural joint under the action of water pressure extrusion, so that the water stopping effect is achieved; the restriction of the bottom gap material enables the compression deformation limit value of the plastic filler to be in the local structural gap space, and the water stopping capacity is increased along with the increase of water pressure, so that high-water-head seepage-proofing and water stopping are realized; the bottom water stop copper sheet is used as a second defense line, so that on one hand, the function of seepage prevention and water stop can be achieved, and meanwhile, the chloroprene rubber rod is further assisted to ensure the deformation space of the plastic filler; the structure of two different stagnant water mechanisms of plastic filler and stagnant water copper sheet is adopted, can adapt to the deformation condition that the basis is complicated, compares multichannel sheet stagnant water, and the damaged possibility of while appearing effectively reduces.
Drawings
Fig. 1 is an overall structure diagram of the hydraulic sealing type flexible water stop structure of the diaphragm wall and the toe board of the present invention.
Fig. 2 is a schematic view showing a part of the diaphragm wall and toe board hydraulic sealing type flexible water stop structure of the present invention.
The figure is marked with: 1. a soil foundation; 2. concrete face rockfill dams; 3. a toe plate; 4. a cut-off wall; 5. top concrete; 7. a flexible water stop structure; 701. a gap material; 702. a foam sheet; 703. water stopping copper sheets; 704. a neoprene bar; 705. a plastic filler; 706. a rubber cover sheet; 707. a bolt; 708. flat steel; 709. a nut; 8. silt; 9. and (4) stone slag.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in figure 1, figure 2, the utility model discloses a cut-off wall and flexible stagnant water structure of toe board water pressure canned type, the practical environment of the flexible stagnant water structure of this application is including building the concrete panel rock-fill dam 2 in the soil foundation 1 that permeates water, and the dam includes that 3 foundations of its toe board all sit on the soil foundation 1 that permeates water, and the dam foundation adopts cut-off wall 4 to carry out prevention of seepage and handles, top cast in situ concrete 5. The flexible water stopping structure 7 is arranged at a structural joint between the toe board 3 of the concrete panel rock-fill dam 2 and the top concrete 5 of the impervious wall 4.
The flexible water stopping structure 7 comprises a water stopping copper sheet 703, a neoprene bar 704 and a plastic filler 705.
A neoprene rod 704 is placed on top of the structural seam between the toe plate 3 and the top concrete 5. The top of the side of the toe plate 3 upstream in contact with the top concrete 5 is provided with a notch, the cross-sectional shape of which is triangular, in which a neoprene bar 704 is arranged. The width of the notch is 5-10 cm, and the depth is 5-10 cm. Large notches are recommended within the structural tolerances.
The right angle portion between the downstream side of the top concrete 5 and the top surface of the toe plate 3 is filled with a plastic filler 705 and forms a bulge structure. The surface of the bulge structure of the plastic filler 705 is adhered with a rubber cover sheet 706, and two side edges of the rubber cover sheet 706 are respectively connected with the top concrete 5 and the toe board 3 in an anchoring way. The rubber cover sheet 706 is anchored on both sides to the top concrete 5 and toe plate 3 by bolts 707, flats 708 and nuts 709.
The water-stopping copper sheet 703 is arranged in the structural joint, and the water-stopping copper sheet 703 is half embedded at the downstream side of the top concrete 5, and the other half is poured into the toe board 3.
The water-stopping copper sheet 703 is horizontally placed, the edges of two sides of the water-stopping copper sheet 703 are bent upwards and tilted, and the central line part is sunken downwards to form a concave structure; the width of the sunken part of the water stop copper sheet 703 is equal to that of the structural seam. The recessed part of the water stop copper sheet 703 is filled with a foam sheet 702 with the same width as the recessed part. The two side edges of the water-stopping copper sheet 703 are bent upwards and raised by about 5cm, the height of the concave part is 5-10 cm, and the width of the concave part of the water-stopping copper sheet 703 is about 0.5-1 cm.
The sunken part of the water stop copper sheet 703 is positioned in the structural seam, and the gap part in the structural seam is filled with a seam isolating material 701. The gap material 701 is an asphalt pinewood plate or a rubber plate.
And the outside of the flexible water stopping structure 7 is sequentially provided with silt 8 and ballast 9 for protection.
The utility model discloses a diaphragm wall and toe board water pressure canned type flexible stagnant water structure, adopt plastic packing 705 under the water pressure extrusion effect, pack the structure seam, reach the effect of stagnant water; the restriction of the bottom seam-separating material 701 enables the compression deformation limit value of the plastic filler 705 to be in a local structural seam space, and the water-stopping capacity is increased along with the increase of water pressure, so that high-water-head seepage-proofing and water-stopping are realized; the bottom water stop copper sheet 703 serves as a second defense line, so that on one hand, the function of seepage prevention and water stop can be achieved, and meanwhile, the chloroprene rubber rod 704 is further assisted to ensure the deformation space of the plastic filler; the structure adopting two different water stop mechanisms of the plastic filler 705 and the water stop copper sheet 703 can adapt to the deformation condition with complex foundation, and compared with multi-channel sheet water stop, the possibility of simultaneous damage is effectively reduced.
Claims (9)
1. A water pressure sealing type flexible water stop structure of a seepage control wall and a toe board is characterized in that the flexible water stop structure (7) is arranged at a structural joint between the toe board (3) of a concrete face rockfill dam (2) and top concrete (5) of the seepage control wall (4), the flexible water stopping structure (7) is characterized by comprising a water stopping copper sheet (703), a chloroprene rubber rod (704) and a plastic filler (705), wherein the chloroprene rubber rod (704) is arranged at the top end of a structural seam between the toe board (3) and the top concrete (5), the plastic filler (705) is filled in a right-angle part between the downstream side of the top concrete (5) and the top surface of the toe board (3) to form a bulge structure, the water stopping copper sheet (703) is arranged in the structural seam, and the water stop copper sheet (703) is embedded at the downstream side of the top concrete (5) in half width, and the other half width is poured into the toe board (3).
2. The diaphragm wall and toe board hydraulic sealing type flexible water stop structure as claimed in claim 1, wherein the water stop copper sheet (703) is horizontally placed, edges of two sides of the water stop copper sheet (703) are bent upwards and tilted, and a central line part is depressed downwards to form a concave structure; the width of the sunken part of the water stop copper sheet (703) is equal to that of the structural seam.
3. The diaphragm wall and toe board hydraulic sealing type flexible water stop structure as claimed in claim 2, wherein the recessed portion of the water stop copper sheet (703) is filled with a foam sheet (702) having the same width as the recessed portion.
4. The watertight wall and toe board hydraulic sealing type flexible water stopping structure as claimed in claim 2, wherein the sunken part of the water stopping copper sheet (703) is positioned in the structural seam, and the gap part in the structural seam is filled with the seam isolating material (701).
5. The structure of claim 4, wherein the crack-preventing material (701) is a bituminous pinewood board or a rubber board.
6. A diaphragm wall and toe board hydraulic sealing type flexible water stop structure as claimed in claim 1, wherein the upstream side of the toe board (3) is contacted with the concrete (5) at the top to form a notch at the top, the cross section of the notch is triangular, and a neoprene bar (704) is arranged in the notch.
7. The structure of claim 1, wherein the surface of the bulge structure of the plastic packing (705) is adhered with a rubber cover sheet (706), and two side edges of the rubber cover sheet (706) are respectively connected with the top concrete (5) and the toe board (3) in an anchoring manner.
8. The watertight wall and toe board hydraulic sealing type flexible water stop structure as claimed in claim 7, wherein two sides of the rubber cover sheet (706) are connected with the top concrete (5) and the toe board (3) by the bolts (707), the flat steel (708) and the nuts (709).
9. The watertight wall and toe board hydraulic sealing type flexible water stop structure as claimed in claim 1, wherein silt (8) and ballast (9) are sequentially arranged outside the flexible water stop structure (7) for protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022894869.9U CN214301579U (en) | 2020-12-03 | 2020-12-03 | Diaphragm wall and toe board water pressure canned type flexible stagnant water structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022894869.9U CN214301579U (en) | 2020-12-03 | 2020-12-03 | Diaphragm wall and toe board water pressure canned type flexible stagnant water structure |
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| CN214301579U true CN214301579U (en) | 2021-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117306464A (en) * | 2023-09-13 | 2023-12-29 | 大连理工大学 | Design and construction method of deep-thickness-coverage-layer upper-face rockfill dam anti-cracking impervious wall |
-
2020
- 2020-12-03 CN CN202022894869.9U patent/CN214301579U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117306464A (en) * | 2023-09-13 | 2023-12-29 | 大连理工大学 | Design and construction method of deep-thickness-coverage-layer upper-face rockfill dam anti-cracking impervious wall |
| CN117306464B (en) * | 2023-09-13 | 2024-07-23 | 大连理工大学 | Design and construction method of deep-thickness-coverage-layer upper-face rockfill dam anti-cracking impervious wall |
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