Dike precast block integrated with inverted filter bag

Abstract

The embankment precast block comprises a precast block body provided with drainage holes and the inverted filter bag integrated on the inner side face of the precast block body, and the inverted filter bag sequentially comprises an outer wrapping layer, a coarse sand layer, an inner interlayer A, a gravel layer, an inner interlayer B, a gravel layer and a core layer from outside to inside. The outer wrapping layer, the inner interlayer A, the inner interlayer B and the core layer are all made of water-permeable and filler-leakage-proof geotechnical materials, the end parts of the outer wrapping layer, the inner interlayer A and the inner interlayer B are all pre-buried in the precast block body in a whole circle, the core layer is all attached to the inner side face of the precast block body, and a cavity defined by the outer wrapping layer, the inner interlayer A and the precast block body is filled with the coarse sand layer. A cavity defined by the inner interlayer A, the inner interlayer B and the prefabricated block body is filled with the gravel layer, a cavity defined by the inner interlayer B and the core layer is filled with the gravel layer, and the two ends of the drainage hole extend to the outer side face of the prefabricated block body and the core layer correspondingly. The structure can guarantee the relative installation position, can improve the construction efficiency, and is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the field of embankment slope protection of water conservancy projects, and in particular relates to a prefabricated embankment block with an integrated anti-filter bag. Background Art

[0002] In the field of embankment and slope protection of water conservancy projects, prefabricated embankment blocks are generally set on the slope surface, and filter bags are independently set inside the prefabricated embankment blocks. The seepage in the embankment first passes through the filter bags and then is discharged through the drainage holes of the prefabricated embankment blocks. At present, the filter bags are laid first and then the prefabricated embankment blocks. It is necessary to carry out laying construction twice on the slope surface. It is not only difficult to ensure the relative installation position of the filter bags and the prefabricated embankment blocks, but also has many construction steps and low construction efficiency. Moreover, if the filter bag is damaged, it is necessary to first uncover the prefabricated embankment blocks and then dig out the filter bag. There are many operation steps and low replacement efficiency. Utility Model Content

[0003] The utility model aims to provide a prefabricated dike block with an integrated anti-filter bag. The structure integrates the anti-filter bag on the prefabricated block body, which can ensure the relative installation position of the anti-filter bag and the prefabricated block body, improve construction efficiency and facilitate replacement.

[0004] The technical solution adopted by the utility model is:

[0005] A prefabricated embankment block with an integrated anti-filter bag comprises a prefabricated block body with drainage holes and an anti-filter bag integrated on the inner side of the prefabricated block body, wherein the anti-filter bag comprises an outer sheath, a coarse sand layer, an inner interlayer A, a gravel layer, an inner interlayer B, a crushed stone layer and a core layer from the outside to the inside, wherein the outer sheath, the inner interlayer A, the inner interlayer B and the core layer are all made of geotechnical materials that are water-permeable and prevent filler leakage, the ends of the outer sheath, the inner interlayer A and the inner interlayer B are all pre-buried in the prefabricated block body in a whole circle, the core layer is attached to the inner side of the prefabricated block body, the coarse sand layer is filled in a cavity surrounded by the outer sheath, the inner interlayer A and the prefabricated block body, the gravel layer is filled in a cavity surrounded by the inner interlayer A, the inner interlayer B and the prefabricated block body, the crushed stone layer is filled in a cavity surrounded by the inner interlayer B and the core layer, and the two ends of the drainage hole extend to the outer side of the prefabricated block body and the core layer respectively.

[0006] Preferably, the outer wrapping layer and the inner partition layer A both adopt a three-layer stacking structure, the two outer layers of the three-layer stacking structure are geocomposite materials, and the middle layer is geogrid.

[0007] Preferably, the inner partition layer B is a geogrid.

[0008] Preferably, the core layer is made of geotextile.

[0009] Preferably, a drain pipe is embedded in the drain hole.

[0010] Preferably, the drain pipe is made of PVC.

[0011] Preferably, the precast block body is made of concrete.

[0012] Preferably, the precast block body is hexagonal.

[0013] The beneficial effects of the present utility model are as follows:

[0014] This structure integrates the filter bag on the precast block body. Among them, the outer wrapping layer, inner partition layer A, and inner partition layer B can not only install the filter bag on the precast block body, but also separate the coarse sand layer, gravel layer, and crushed stone layer. Therefore, the seepage water in the dike passes through the outer wrapping layer, coarse sand layer, inner partition layer A, gravel layer, inner partition layer B, crushed stone layer, and core layer in sequence and then enters the drain hole and discharges from the precast block body; in this structure, the installation of the precast block body and the filter bag can be completed only by laying once, which can not only ensure the relative installation position of the filter bag and the precast block body, but also improve the construction efficiency; in this structure, if the filter bag is damaged, only the precast block body needs to be uncovered, and the replacement is convenient, which is convenient for later maintenance. Description of the Drawings

[0015] Figure 1 is a schematic structural view of a dike precast block integrating a filter bag in an embodiment of the present utility model.

[0016] Figure 2 is a schematic plan view of a dike precast block integrating a filter bag in an embodiment of the present utility model.

[0017] Figure 3 is a schematic structural view of the outer wrapping layer and inner partition layer A in an embodiment of the present utility model.

[0018] In the figure: 1 - precast block body; 2 - outer wrapping layer; 3 - coarse sand layer; 4 - inner partition layer A; 5 - gravel layer; 6 - inner partition layer B; 7 - crushed stone layer; 8 - core layer; 9 - drain hole; 10 - drain pipe; 11 - geocomposite material; 12 - geogrid. Detailed Embodiment

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] This embodiment discloses a dike precast block integrating a filter bag. As Figure 1 shown, it includes a precast block body 1 and a filter bag; the precast block body 1 is provided with a drain hole 9, as shown in Figure 1 and Figure 2 ; the filter bag is integrated on the inner side surface of the precast block body 1, as shown in Figure 1 and Figure 2 ; the filter bag from outside to inside is successively an outer wrapping layer 2, a coarse sand layer 3, an inner partition layer A 4, a gravel layer 5, an inner partition layer B 6, a crushed stone layer 7, and a core layer 8, as shown in Figure 1 and Figure 2As shown, the ends of the outer sheath 2, the inner interlayer A4 and the inner interlayer B6 are all pre-buried in the prefabricated block body 1, the core layer 8 is attached to the inner side of the prefabricated block body 1, the coarse sand layer 3 is filled in the cavity surrounded by the outer sheath 2, the inner interlayer A4 and the prefabricated block body 1, the gravel layer 5 is filled in the cavity surrounded by the inner interlayer A4, the inner interlayer B6 and the prefabricated block body 1, the crushed stone layer 7 is filled in the cavity surrounded by the inner interlayer B6 and the core layer 8, and the two ends of the drainage hole 9 extend to the outer side of the prefabricated block body 1 and the core layer 8 respectively. The outer sheath 2, the inner interlayer A4, the inner interlayer B6 and the core layer 8 are all made of geotechnical materials that are water-permeable and anti-filler leakage.

[0021] From the above scheme, we can know that:

[0022] First, the structure integrates the anti-filter bag on the prefabricated block body 1, wherein the outer sheath 2, the inner interlayer A4, and the inner interlayer B6 can not only install the anti-filter bag on the prefabricated block body 1, but also separate the coarse sand layer 3, the gravel layer 5, and the crushed stone layer 7. Therefore, the seepage water in the levee passes through the outer sheath 2, the coarse sand layer 3, the inner interlayer A4, the gravel layer 5, the inner interlayer B6, the crushed stone layer 7, and the core layer 8 in sequence, and then enters the drainage hole 9 and is discharged from the prefabricated block body 1;

[0023] Second, in this structure, the installation of the prefabricated block body 1 and the filter bag can be completed by laying only once, which can not only ensure the relative installation position of the filter bag and the prefabricated block body 1, but also improve the construction efficiency;

[0024] Third, in this structure, if the anti-filter bag is damaged, it is only necessary to uncover the prefabricated block body 1, which is convenient for replacement and later maintenance.

[0025] Regarding the prefabricated block body 1, in this embodiment, preferably: the prefabricated block body 1 is made of concrete, which is easy to make; the prefabricated block body 1 is hexagonal, which is easy to splice. Figure 2 .

[0026] Regarding the selection of geotechnical materials in the filter bag, in this embodiment, preferably: the outer wrap layer 2 and the inner partition layer A4 both adopt a three-layer stacking structure, the two outer layers of the three-layer stacking structure are geocomposite materials 11, and the middle layer is geogrid 12, which can prevent coarse sand leakage. Figure 3 The inner partition B6 is made of geogrid, and the hole size can be 20mm; the core layer 8 is made of geotextile.

[0027] Regarding the setting of the drainage hole 9, in the present embodiment, preferably: a drainage pipe 10 is embedded in the drainage hole 9, and the diameter can be selected to be 50 mm. The drainage pipe 10 can prevent the internal erosion of the prefabricated block body 1, and the drainage pipe 10 can be made of PVC material.

[0028] The material selection and size of each filling layer in the filter bag are set according to actual needs and are not limited. In this embodiment, the thickness of the coarse sand layer 3 is 50 mm, the particle size of the gravel layer 5 is 30 mm, and the thickness is 50 mm. The particle size of the crushed stone layer 7 is 80 mm, and the thickness is 100 mm.

[0029] The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

Claims

1. An embankment precast block integrated with a filter bag, characterized in that: It includes a prefabricated block body with drainage holes and an anti-filter bag integrated on the inner side of the prefabricated block body. The anti-filter bag is composed of an outer wrap layer, a coarse sand layer, an inner partition layer A, a gravel layer, an inner partition layer B, a crushed stone layer and a core layer from the outside to the inside. The outer wrap layer, the inner partition layer A, the inner partition layer B and the core layer are all made of geotechnical materials that are water-permeable and prevent filler leakage. The ends of the outer wrap layer, the inner partition layer A and the inner partition layer B are all pre-buried in the prefabricated block body in a whole circle. The core layer is attached to the inner side of the prefabricated block body. The coarse sand layer is filled in the cavity surrounded by the outer wrap layer, the inner partition layer A and the prefabricated block body. The gravel layer is filled in the cavity surrounded by the inner partition layer A, the inner partition layer B and the prefabricated block body. The crushed stone layer is filled in the cavity surrounded by the inner partition layer B and the core layer. The two ends of the drainage hole extend to the outer side of the prefabricated block body and the core layer respectively.

2. The precast block for dike integrated with an inverse filter pack according to claim 1, characterized in that: The outer wrapping layer and the inner partition layer A both adopt a three-layer stacking structure, in which the two outer layers are geocomposite materials and the middle layer is geogrid.

3. The precast block for dike integrated with an inverted filter bag as claimed in claim 1, wherein: The inner partition B adopts geogrid.

4. The precast block for levee integrated with an inverse filter bag according to claim 1, wherein: The core layer is made of geotextile.

5. The precast block for levee integrated with an inverted filter bag according to claim 1, characterized in that: A drain pipe is embedded in the drain hole.

6. The precast dyke block integrated with an inverted filter bag according to claim 5, characterized in that: The drainage pipe is made of PVC.

7. The precast block for dike with integrated filter bag as claimed in claim 1, wherein: The prefabricated block body is made of concrete.

8. The precast block for dike integrated with an inverse filter bag according to claim 1 or 7, characterized in that: The prefabricated block body is hexagonal.

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