A riverbank protection panel

Abstract

This utility model relates to the field of precast concrete slab technology for river channels, and discloses a river channel slope protection panel, including precast concrete slabs spliced ​​adjacently on a river channel slope. One side of each precast concrete slab has a groove, and the other side has a protrusion, allowing adjacent slabs to be interlocked. A composite geomembrane is located between the river channel slope soil and the precast concrete slabs. A coping is cast together with the precast concrete slabs on the top side of the river channel slope, and a bottom protection layer is also included at the bottom of the river channel. This utility model, by placing a composite geomembrane under the precast slabs, prevents river water from eroding the soil beneath the precast slabs when the slope is washed away, thus preventing soil loss and reducing the risk of the slope protection slabs becoming suspended, sinking, or even collapsing.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete slabs for river channels, and in particular to a river channel slope protection panel. Background Technology

[0002] Riverbank or riverbank revetments are protective structures installed on slopes to prevent erosion. They directly reinforce riverbanks or river channels to resist scouring or washing by water flow. Common methods include riprap, dry-laid rubble masonry, mortar-grouted rubble masonry, and gabions.

[0003] For some small-scale canal projects, concrete is often poured onto the riverbank slope to protect the slope. However, the on-site pouring method is complicated and slow.

[0004] As a result, precast concrete slope protection slabs were developed. During construction, the slope protection slabs are usually arranged together, with the precast slabs closely packed together. However, river water can seep through the gaps and erode the soil underneath. After a long period of erosion, the soil under the slope protection slabs is lost, causing the slope protection slabs to become suspended, sink, or even collapse. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a riverbank protection panel, which aims to improve the problems in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A riverbank protection panel, comprising Precast concrete slabs are spliced ​​together on the riverbank protection. Composite geomembrane is located between the soil and precast concrete slabs on the riverbank slope. The capping is cast together with the precast concrete slab on one side of the top of the riverbank revetment.

[0007] As a further description of the above technical solution, it also includes a bottom protection structure located at the bottom of the river channel.

[0008] As a further description of the above technical solution, one side of the precast concrete slab is provided with a groove, and the other side is provided with a protrusion, so that adjacent precast concrete slabs can be snapped together.

[0009] As a further description of the above technical solution, the bottom protection is poured in two layers, each layer being 4cm thick.

[0010] As a further description of the above technical solution, a metal plate is fixedly installed at one end of the tensioning duct. The metal plate has grouting holes and a through hole matching the diameter of the tensioning duct, and the through hole is coaxially arranged with the tensioning duct. This utility model has the following beneficial effects: This invention, by setting a composite geomembrane under the precast slab, prevents the river water from washing away the soil under the precast slab when the slope is eroded by the river water. This avoids soil loss and reduces the risk of the slope slab becoming suspended, sinking, or even collapsing. Attached Figure Description

[0011] Figure 1 This is a top view of the precast concrete slab of this utility model; Figure 2 This is a front view of the precast concrete slab of this utility model; Figure 3 This is a sectional view of the riverbank protection structure of this utility model; Figure 4 This is a splicing diagram of the precast concrete slab of this utility model; Figure 5 This is a structural diagram of the concrete tensioning pipe of this utility model; Figure 6 This is a perspective view of the precast concrete slab of this utility model; Figure 7 This is a structural diagram of the precast concrete slab of this utility model; Figure 8 The structural diagrams of the precast concrete slab and metal slab of this utility model are shown. Figure 9 This is a cross-sectional view of the precast concrete slab of this utility model.

[0012] Legend: 101. Precast concrete slab; 102. Composite geomembrane; 103. Coping; 104. Bottom protection; 105. Metal plate; 106. Grouting hole. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Reference Figure 1-9 One embodiment of this utility model is a riverbank protection panel, comprising: Multiple precast concrete slabs 101 are provided and are spliced ​​adjacent to each other on the riverbank protection. The precast slabs 101 are made of C30 concrete and have cold-drawn steel wires arranged inside.

[0015] Composite geomembrane 102 is located between the soil and the precast concrete slab on the riverbank slope. The composite geomembrane consists of two layers of fabric and one layer of membrane, with a strength of 400g / m².2 .

[0016] For the capping 103, during construction, C25 concrete and precast concrete slabs are directly poured together on one side of the top of the riverbank revetment. For ease of construction, the capping is preferably a cuboid structure.

[0017] The bottom of the river channel is also equipped with a bottom protection 104, which is made of C25 concrete and is poured in two layers, each layer being 4cm thick.

[0018] like Figure 3 This is a cross-sectional view of an agricultural canal. The edge of the canal is higher than the ground, forming a slope of 1:1.5 with the straight surface, and the top of the canal is flush with the top of the slope.

[0019] like Figure 1 and Figure 2 As shown, a groove is provided on one side of the precast concrete slab 104 and a protrusion is provided on the other side, and the groove and protrusion of adjacent precast concrete slabs can be engaged together.

[0020] like Figure 6 As shown, a tensioning duct is pre-installed on the precast concrete slab 101, which is used to insert a steel bar with a diameter of 9.0 mm.

[0021] During the construction of precast concrete slab 101, the protrusions and grooves are aligned, and 9.0mm steel bars are tensioned to ensure a tight joint (post-tensioning process), followed by grouting. Advantages include tight joint connections, uniform settlement, long service life, aesthetically pleasing appearance, and convenient installation.

[0022] like Figure 7 As shown, the protrusions on both sides of the precast concrete slab and the ends of the grooves are at least 5cm away from the sides of the precast concrete slab 101, forming a limiting part. The ends of the grooves and protrusions have space from the side walls of the precast concrete slab to facilitate positioning during installation. When two adjacent precast concrete slabs are installed, the protrusions fit snugly into the grooves under the action of the limiting part, ensuring the alignment of the tensioning pipes for different precast concrete slabs and facilitating the tensioning of the precast slabs.

[0023] In this embodiment, to facilitate the insertion of the steel bar into the tensioning channel, the port of the tensioning channel is opened into a tapered structure with a diameter larger than that of the tensioning channel, so as to facilitate the installation of the tensioning steel bar during construction.

[0024] After the precast concrete slabs are laid, they need to be anchored to fix the entire slope protection structure. The anchoring of the entire slope protection structure is as follows: Figure 3As shown, the bottom layer of the precast concrete slab is poured in two layers to provide foundation bearing capacity, distribute slope load, and prevent local settlement. The two layers are interconnected through structural synergy, waterproofing continuity, and construction sequence to jointly ensure the overall stability of the slope protection system. After anchoring, concrete is poured on top of the precast concrete slab to seal the edge of the slope top and prevent rainwater from seeping into the gaps of the precast slab.

[0025] In a further embodiment, to facilitate the injection of cement into the tensioning channel, a metal plate 105 is fixedly installed at one end of the tensioning pipe. During the pouring of the precast concrete slab, the metal plate is poured together with the concrete. The metal plate 105 has a grouting hole 106 and a through hole matching the diameter of the tensioning pipe, with the through hole coaxial with the tensioning pipe. An L-shaped guide plate is provided behind the metal grouting hole 106, with the bottom edge of the guide plate flush with the cylindrical surface of the tensioning channel. Figure 8 and Figure 9 As shown, a flow channel is formed between the guide plate and the metal plate 105. During grouting, cement slurry will flow from the flow channel into the tensioning pipe. Moreover, since the flow channel is connected to the tensioning pipe, cement slurry will also be injected into the flow channel.

[0026] Depending on the site requirements, tensioning channels may not be provided on the precast concrete slabs. The precast concrete slabs can be directly spliced ​​together, and the splicing surfaces can be filled with concrete.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A riverbank protection panel, characterized in that: include Precast concrete slabs are spliced ​​together on the riverbank protection. Composite geomembrane is placed between the soil and precast concrete slabs on the riverbank slope. The capping is cast together with the precast concrete slab on one side of the top of the riverbank revetment.

2. The riverbank protection panel according to claim 1, characterized in that: It also includes the riverbed protection, located at the bottom of the river channel.

3. A riverbank protection panel according to claim 1, characterized in that: The precast concrete slab has a groove on one side and a protrusion on the other, allowing adjacent precast concrete slabs to be snapped together.

4. A riverbank protection panel according to claim 2, characterized in that: The base protection is poured in two layers, each layer being 4cm thick.

5. A riverbank protection panel according to claim 1, characterized in that: Tensioning pipes are installed on the precast concrete slab.

6. A riverbank protection panel according to claim 3, characterized in that: The grooves and protrusions have space between their ends and the side walls of the precast concrete slab to allow for positioning during installation.

7. A riverbank protection panel according to claim 5, characterized in that: A metal plate is fixedly installed at one end of the tensioning pipe. The metal plate has grouting holes and through holes that match the diameter of the tensioning pipe. The through holes are coaxially arranged with the tensioning pipe.

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