Anti-sliding wall structure suitable for inclined wall dam

Abstract

The utility model relates to an anti-sliding wall structure suitable for an inclined wall dam, which at least comprises an anti-sliding wall, the anti-sliding wall is arranged at the slope toe position of the inclined wall dam, the cross section of the anti-sliding wall is in the shape of a variable rectangle, the upstream side of the rectangular anti-sliding wall is a vertical surface, and the slope toe of the downstream side is an arc chamfer. Compared with a traditional sharp corner design, the circular arc chamfers can prevent the geomembrane from being punctured and damaged. In order to improve the anti-sliding capacity of the dam slope, the structures of the upstream side and the downstream side of the anti-sliding wall are changed, a lower cushion layer, an upper cushion layer and a reservoir basin ballasting covering layer are arranged on the upstream side of the anti-sliding wall from bottom to top, a face plate expanding end and a face plate protecting face are arranged on the downstream side of the anti-sliding wall, and an inclined wall geomembrane is laid on the lower cushion layer. And the anti-seepage reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the field of water conservancy and hydropower engineering construction, and in particular relates to a slide-resistant wall structure suitable for a sloping wall dam. Background Art

[0002] Geomembrane has the characteristics of low cost, strong adaptability and good anti-seepage performance. Therefore, in recent years, geomembrane has been widely used in inclined wall earth-rock dams. Since the protective layer of inclined wall earth-rock dams is mostly a concrete panel structure, a hard anti-slip wall is generally required at the foot of the slope to improve the anti-slip ability of the dam slope. However, the anti-slip wall is currently mostly set in a rectangular or trapezoidal shape, and its sharp corners can easily cause puncture damage to the geomembrane, causing damage to the dam's anti-seepage system. Utility Model Content

[0003] The utility model aims to provide a slide-resistant wall structure suitable for a sloping wall dam, so as to overcome the above technical defects.

[0004] In order to solve the above technical problems, the utility model provides a sliding-resistance wall structure suitable for a sloping wall dam, which at least comprises:

[0005] The anti-slip wall is arranged at the slope foot of the inclined wall dam. The cross section of the anti-slip wall is a variant rectangular shape. The upstream side of the rectangular anti-slip wall is a vertical surface, and the slope foot of the downstream side is an arc chamfer.

[0006] The cross section of the anti-slip wall is a variably shaped rectangle, and the variably shaped rectangle refers to:

[0007] The anti-slip wall comprises a first surface and a fourth surface which are arranged vertically and parallel to each other, two opposite edges of the first surface vertically extend downward to form a second surface and a third surface, wherein the second surface and the fourth surface form a right angle at the junction;

[0008] The downstream edge of the third surface extends obliquely to form an inclined surface;

[0009] The junction between the inclined surface and the fourth surface is an arc chamfer.

[0010] A sub-base is arranged on the bottom surface of the anti-slip wall;

[0011] The sub-base covers the upstream reservoir basin of the anti-sliding wall and the upstream slope of the inclined wall dam;

[0012] On the upstream side of the anti-slip wall, an upper cushion layer and a reservoir basin weight covering layer are laid from bottom to top;

[0013] The upstream slope of the inclined wall dam is arranged with a panel protection surface, and a panel expansion end is arranged between the panel protection surface and the anti-slip wall.

[0014] The anti-sliding wall structure applicable to the inclined wall dam also includes an inclined wall geomembrane, which is located between the anti-sliding wall and the underlying cushion layer;

[0015] The inclined wall geomembrane extends upstream to the reservoir basin and is ballasted by the upper cushion layer;

[0016] The inclined wall geomembrane extends along the upstream slope of the inclined wall dam and is ballasted by the expanded end of the panel and the panel facing.

[0017] The anti-sliding wall structure suitable for inclined wall dam also includes reservoir basin geomembrane;

[0018] The first side of the reservoir geomembrane is fixed to the first surface by means of a buckle;

[0019] Starting from the buckle, after the geomembrane of the reservoir basin is laid on the first side and the second side, the geomembrane of the reservoir basin is extended to cover and laid between the upper cushion layer and the lower cushion layer.

[0020] Between the upper cushion layer and the lower cushion layer, the reservoir geomembrane covers the end of the inclined wall geomembrane;

[0021] The reservoir basin geomembrane and the inclined wall geomembrane are connected by welding.

[0022] The utility model provides a special anti-slip wall structure suitable for a sloping wall dam. The cross section of the anti-slip wall structure is a variant rectangular shape. The upstream side of the rectangular anti-slip wall is a vertical surface, and the slope foot of the downstream side is a circular arc chamfer, and the circular arc chamfer is located at the slope foot of the sloping wall dam. Compared with the traditional sharp corner design, the circular arc chamfer can prevent the geomembrane from being punctured and damaged.

[0023] In order to improve the anti-slip ability of the dam slope, the utility model also changes the structure of the upstream and downstream sides of the anti-slip wall. On the upstream side of the anti-slip wall, a lower cushion layer, an upper cushion layer and a reservoir basin weight covering layer are arranged from bottom to top, and on the downstream side of the anti-slip wall, an enlarged panel end and a panel protective surface are arranged, and a sloping wall geomembrane is laid on the lower cushion layer to improve the anti-seepage reliability.

[0024] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the anti-slip wall structure suitable for inclined wall dams.

[0026] Figure 2 is the cross-sectional view of the anti-slip wall.

[0027] Description of reference numerals:

[0028] 1. Anti-slip wall; 11. First surface; 12. Second surface; 13. Third surface; 14. Fourth surface; 15. Inclined surface; 16. Circular chamfer;

[0029] 2. Panel expansion end;

[0030] 3. Sloped wall geomembrane;

[0031] 4. Sub-base;

[0032] 5. Geomembrane for reservoir basin;

[0033] 6. Upper cushion layer;

[0034] 7. Geomembrane thermal connection position;

[0035] 8. Buckle;

[0036] 9. The basin is heavy and covers the layer;

[0037] 10. Panel protection. DETAILED DESCRIPTION

[0038] The following is an explanation of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0039] It should be noted that, in the present utility model, the top, bottom, left and right in the figure are regarded as the top, bottom, left and right of the anti-slip wall structure applicable to the inclined wall dam described in this specification.

[0040] The exemplary embodiments of the present invention are now introduced with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0041] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0042] This embodiment relates to a sliding-resistance wall structure suitable for a sloping wall dam. Figure 1 and Figure 2 The anti-slip wall structure at least includes an anti-slip wall 1, which is arranged at the foot of the slope of the inclined wall dam. The cross section of the anti-slip wall 1 is a variant rectangular shape. The upstream side of the rectangular anti-slip wall 1 is a vertical surface, and the foot of the slope on the downstream side is a circular chamfer 16.

[0043] Specifically, see Figure 2 , the cross section of the anti-slip wall 1 is a rectangular shape with a variant shape, and the rectangular shape with a variant shape refers to:

[0044] (101) The anti-slip wall 1 includes a first surface 11 and a fourth surface 14 which are arranged vertically and parallel to each other. Two opposite edges of the first surface 11 extend vertically downward to form a second surface 12 and a third surface 13 which are parallel to each other. The second surface 12 and the fourth surface 14 form a right angle at the junction, and the second surface 12 is the vertical surface mentioned above.

[0045] (201) The downstream edge of the third surface 13 extends obliquely to form an inclined surface 15.

[0046] according to Figure 2 It can be seen that the third surface 13 and the inclined surface 15 form an obtuse angle.

[0047] (301) The junction between the inclined surface 15 and the fourth surface 14 is a circular chamfer 16.

[0048] Figure 2 The dotted line in FIG. 1 is the center angle of the circular chamfer 16.

[0049] In this embodiment, the junction between the anti-slip wall 1 and the inclined wall dam is no longer a traditional sharp corner, but Figure 1 or Figure 2 The arc chamfer 16 is shown, so that the inclined wall geomembrane 3 ballasted under the anti-slip wall 1 will not be punctured and damaged.

[0050] In some embodiments, the top width of the anti-slip wall 1 is not less than 1m, the height is not less than 1m, and the arc radius is not less than 0.5m, for example, the top width is 1.5m, the height is 1.0m, and the arc radius is 0.75m. The anti-slip wall 1 is made of plain concrete with a strength not less than C20.

[0051] Please continue reading Figure 1 A lower cushion layer 4 is arranged on the bottom surface of the anti-slip wall 1, and the lower cushion layer 4 covers the upstream reservoir basin of the anti-slip wall 1 and the upstream slope of the inclined wall dam. In other words, the lower cushion layer 4 covers the upstream reservoir basin of the anti-slip wall 1, the anti-slip wall 1, and the upstream slope of the inclined wall dam at the same time.

[0052] A panel protection surface 10 is arranged on the upstream slope of the inclined wall dam, and a panel enlarged end 2 is provided between the panel protection surface 10 and the anti-slip wall 1.

[0053] The panel enlarged end 2 mainly provides oblique support force for the panel protective surface 10 and transmits the pressure to the anti-slip wall 1 after diffusion. Therefore, the panel enlarged end 2 is closely attached to the third surface 13 and the inclined surface 15 of the anti-slip wall 1.

[0054] In some embodiments, the panel enlarged end 2 is made of plain concrete with a strength not less than C20.

[0055] The panel protection 10 can be prefabricated or cast-in-place, with a cast-in-place thickness of not less than 0.2m and a prefabricated thickness of not less than 0.3m. It uses plain concrete with a strength not less than C20 and is equipped with anti-cracking steel bars. In some embodiments, the panel protection 10 is a cast-in-place C20 concrete slab with a thickness of 20cm.

[0056] Continue reading Figure 1 An upper cushion layer 6 and a reservoir basin weight covering layer 9 are laid from bottom to top on the upstream side of the anti-slip wall 1 , and the top surface of the reservoir basin weight covering layer 9 is flush with the first surface 11 of the anti-slip wall 1 .

[0057] The anti-sliding wall structure suitable for the inclined wall dam also includes an inclined wall geomembrane 3 and a reservoir basin geomembrane 5 .

[0058] Among them, the inclined wall geomembrane 3 is located between the anti-slip wall 1 and the lower cushion layer 4, the inclined wall geomembrane 3 extends upstream to the reservoir basin and is ballasted by the upper cushion layer 6, and the inclined wall geomembrane 3 extends along the upstream slope of the inclined wall dam and is ballasted by the panel enlarged end 2 and the panel protective face 10.

[0059] The first side of the reservoir geomembrane 5 is fixed to the first surface 11 by the buckle 8. Starting from the buckle 8, the reservoir geomembrane 5 covers the first surface 11 and the second surface 12, and then the reservoir geomembrane 5 extends and covers between the upper cushion layer 6 and the lower cushion layer 4.

[0060] The buckle 8 can prevent the reservoir geomembrane 5 from being displaced.

[0061] The inclined wall geomembrane 3 is arranged below the panel protective surface 10, and a composite geomembrane is used, such as two cloths and one membrane, or one cloth and one membrane. When one cloth and one membrane, the membrane is placed on the upper part for easy welding construction; the specification of the inclined wall geomembrane 3 is not less than 0.5mm, and the specification of the non-woven fabric is not less than 300g / ㎡.

[0062] In some embodiments, the specification of the inclined wall geomembrane 3 is 0.8 mm, and the specification of the non-woven fabric is 400 g / ㎡.

[0063] In some embodiments, a concrete cushion layer is provided between the inclined wall geomembrane 3 and the panel facing 10 .

[0064] The contact part between the reservoir geomembrane 5 and the anti-slip wall 1 is connected by gluing.

[0065] The lower cushion layer 4 is arranged under the inclined wall geomembrane 3 to provide normal support for the inclined wall geomembrane 3 to prevent the geomembrane from being damaged by sharp-angle particles on the dam shell filler or the dam base surface. It also has a leveling effect to facilitate the laying of the inclined wall geomembrane 3.

[0066] The thickness of the underlying layer 4 is not less than 10 cm, and it uses well-graded medium-coarse sand. In this example, the thickness is 20 cm.

[0067] Between the upper cushion layer 6 and the lower cushion layer 4, the reservoir geomembrane 5 covers the end of the inclined wall geomembrane 3, and the reservoir geomembrane 5 and the inclined wall geomembrane 3 are connected by welding. The welding position is Figure 1 Geomembrane thermal connection position 7.

[0068] The upper cushion layer 6 is arranged on the reservoir geomembrane 5 to prevent the reservoir geomembrane 5 from being affected by the upper external load. The thickness of the upper cushion layer 6 is not less than 10 cm, and it uses well-graded medium-coarse sand, and it is preferably compacted manually. The thickness of this example is 20 cm.

[0069] The reservoir basin weight cover layer 9 is the cover weight of the reservoir basin geomembrane 5 and is arranged above the upper cushion layer 6. The total thickness of the reservoir basin weight cover layer 9 and the upper cushion layer 6 should meet the buoyancy requirements under the reservoir basin geomembrane 5 to avoid excessive buoyancy and damage to the reservoir basin anti-seepage when the groundwater level is high. The reservoir basin weight cover layer 9 should be made of the original foundation excavation material to reduce the cost of external transportation, and compaction should be carried out by light machinery or manual compaction. The thickness of this example is 40cm.

[0070] The panel protection surface 10 is arranged on the inclined wall geomembrane 3, mainly to protect the inclined wall geomembrane 3 and prevent wave erosion on the water surface.

[0071] See also Figure 1 , which is applicable to the anti-slip wall structure of the inclined wall dam, and its implementation steps are as follows:

[0072] After the foundation excavation near the anti-slip wall 1 is corrected, the lower cushion layer 4 is filled and compacted, and the slope foot is trimmed into an arc chamfer 16; then the inclined wall geomembrane 3 is naturally laid loosely; a template is set up to cast the anti-slip wall 1; then the reservoir basin geomembrane 5 is naturally laid loosely; the geomembrane hot joint is constructed, that is, the geomembrane hot joint position is hot-melt welded at the geomembrane hot joint position 7; then the buckle 8 is constructed; the upper cushion layer 6 is filled and compacted; then the template is set up to cast the panel enlarged end 2; the reservoir basin weight covering layer 9 is filled and pressed; and the panel protective surface 10 is constructed.

[0073] After the above implementation steps are completed, the Figure 1 The anti-slip wall structure shown is suitable for a sloping wall dam. The anti-slip wall structure has good support. During operation, a small amount of displacement will not destroy the geotechnical sloping wall anti-seepage system, thereby improving the reliability of the anti-seepage structure.

[0074] The anti-slip wall structure is mainly used for the slope foot of geomembrane inclined wall earth-rock dam. While improving the anti-slip ability of the dam slope, it can also avoid puncture damage to the geomembrane structure and improve the reliability of the anti-seepage structure.

[0075] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. The anti-slip wall structure is suitable for inclined wall dams, characterized in that: At least: The anti-slip wall (1) is arranged at the foot of the slope of the inclined wall dam, the cross section of the anti-slip wall (1) is a rectangular with a variant shape, the upstream side of the rectangular anti-slip wall (1) is a vertical surface, and the foot of the slope on the downstream side is a circular arc chamfer (16).

2. The anti-slip wall structure suitable for a sloped wall dam according to claim 1, characterized in that: The cross section of the anti-slip wall (1) is a rectangular shape with a variant shape, and the rectangular shape with a variant shape refers to: The anti-slip wall (1) comprises a first surface (11) and a fourth surface (14) which are arranged vertically and parallel to each other, wherein two opposite edges of the first surface (11) extend vertically downward to form a second surface (12) and a third surface (13), wherein the second surface (12) and the fourth surface (14) form a right angle at the junction; The downstream edge of the third surface (13) extends obliquely to form an inclined surface (15); The junction between the inclined surface (15) and the fourth surface (14) is a circular arc chamfer (16).

3. The anti-slip wall structure suitable for a sloped wall dam according to claim 2, characterized in that: A lower cushion layer (4) is arranged on the bottom surface of the anti-slip wall (1); The underlying layer (4) covers the upstream reservoir of the anti-slip wall (1) and the upstream slope of the inclined wall dam; An upper cushion layer (6) and a reservoir basin weight covering layer (9) are laid from bottom to top on the upstream side of the anti-slip wall (1); The upstream slope of the inclined wall dam is arranged with a panel protection surface (10), and a panel enlarged end head (2) is provided between the panel protection surface (10) and the anti-slip wall (1).

4. The anti-slip wall structure suitable for a sloped wall dam according to claim 3, characterized in that: It also includes a slanted wall geomembrane (3), which is located between the anti-slip wall (1) and the underlying layer (4); The inclined wall geomembrane (3) extends upstream to the reservoir basin and is ballasted by the upper cushion layer (6); The inclined wall geomembrane (3) extends along the upstream slope of the inclined wall dam and is ballasted by the panel enlarged end (2) and the panel protective face (10).

5. The anti-slip wall structure applicable to the inclined wall dam according to claim 4, characterized in that: Also included is a reservoir geomembrane (5); The first side of the reservoir geomembrane (5) is fixed to the first surface (11) via a buckle (8); Starting from the buckle (8), after the reservoir geomembrane (5) covers the first surface (11) and the second surface (12), the reservoir geomembrane (5) extends to cover and is laid between the upper cushion layer (6) and the lower cushion layer (4).

6. The anti-slip wall structure suitable for a sloped wall dam according to claim 5, characterized in that: Between the upper cushion layer (6) and the lower cushion layer (4), the reservoir geomembrane (5) covers the end of the inclined wall geomembrane (3); The reservoir geomembrane (5) and the inclined wall geomembrane (3) are connected by welding.

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