A foundation pit concrete slope protection blanket based on a bamboo sheet framework and a straw mat bottom layer

Abstract

The utility model relates to the technical field of slope protection blanket device, concretely is a kind of based on bamboo sheet framework and straw mat bottom's foundation pit concrete slope protection blanket, it include: straw mat bottom, the four sides periphery of straw mat bottom is equipped with multiple eyelet;Bamboo sheet framework layer, the bamboo sheet framework layer is installed on straw mat bottom, and straw mat bottom grows bamboo sheet framework layer outer edge;Concrete layer, the concrete layer is installed in the side of bamboo sheet framework layer far from straw mat bottom, and the concrete layer includes concrete conical block and concrete cuboid block, and the bamboo sheet framework layer is installed with multiple concrete conical block and concrete cuboid block, and the concrete conical block, concrete cuboid block interval distribution.This device is manufactured with bamboo, straw mat natural material and concrete to cooperate a new slope protection blanket, to reduce cost and facilitate subsequent degradation.

Description

Technical Field

[0001] This utility model relates to the technical field of slope protection blanket devices, and in particular to a foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer. Background Technology

[0002] Ecological slope protection blankets are specialized materials used for erosion control on riverbanks, lake shores, and reservoirs. They are made by combining geotextiles with mixed grass seed fabric and other supporting maintenance materials using specialized equipment to create a blanket-like profile. After laying, the grass seeds germinate, and the plant roots integrate with the geotextiles and slope to form a unified whole. This effectively controls water erosion and soil loss, resisting erosion velocities up to 4 m / s, and providing both aesthetic appeal and ecological restoration.

[0003] Traditional slope protection blankets mostly use metal frames and synthetic fiber fabrics, which have problems such as high cost and non-degradability.

[0004] To address the issues of high cost and non-degradability, a new type of concrete slope protection blanket for foundation pits was designed, based on a bamboo frame and a straw mat bottom layer. By combining natural materials such as bamboo and straw mats with concrete, a new slope protection blanket is manufactured, thereby reducing costs and facilitating subsequent degradation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer. By using natural materials such as bamboo and straw mat, and concrete, a new slope protection blanket is manufactured, thereby reducing costs and facilitating subsequent degradation.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer, comprising: The bottom layer of the straw mat has multiple holes on all four sides. A bamboo frame layer is installed on the bottom layer of the straw mat, and the bottom layer of the straw mat extends beyond the outer edge of the bamboo frame layer; A concrete layer is installed on the side of the bamboo frame layer away from the bottom layer of the straw mat. The concrete layer includes concrete cone blocks and concrete cuboid blocks. Multiple concrete cone blocks and concrete cuboid blocks are installed on the bamboo frame layer, and the concrete cone blocks and concrete cuboid blocks are distributed at intervals.

[0007] Furthermore, wear-resistant fiber rings are fixedly installed in each of the multiple holes, and adjacent straw mat bottom layers are connected by ropes and wear-resistant fiber rings.

[0008] Furthermore, the thickness of the straw mat bottom layer is 5-10mm, and the pore size is ≤5mm.

[0009] Furthermore, the bamboo frame layer includes multiple bamboo strip blocks, which are fixedly installed by ropes and also fixedly installed on the bottom layer of the straw mat by ropes.

[0010] Furthermore, multiple bamboo strips are installed on the bamboo block, and grooves are provided at the bottom of the concrete cone block and the concrete cuboid block. The multiple grooves are respectively inserted into the multiple bamboo strips, and the surface of the bamboo block is provided with concrete that cooperates with and fixes the concrete cuboid block and the concrete cone block.

[0011] Furthermore, the outer wall of the concrete cone block is inclined at a 15-degree angle.

[0012] Furthermore, rice husk ash is placed inside the concrete cone block and the concrete cuboid block.

[0013] Compared with the prior art, the beneficial effects of this utility model include: Bamboo and straw mats, as natural materials, have the advantages of high tensile strength, biodegradability, and low cost. When used as slope protection materials in the foundation pit stage, if they are not recycled, soil pollution can be avoided, which is more in line with the concept of green construction site construction. The cuboid and cone blocks are precisely installed on the bamboo strips through the integrally formed grooves on them, while the concrete cuboid and cone blocks are stably fixed on the bamboo strips through concrete. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a side view of the device structure of this utility model; Figure 2 This is a top view of the bottom layer of the straw mat of this utility model. Figure 3 This is a top view schematic diagram of the bamboo strip skeleton layer of this utility model; Figure 4 This is a cross-sectional structural diagram showing the combination of the concrete cuboid block and the concrete cone block with the bamboo frame layer of this utility model. Figure 5 For the present utility model Figure 4 A magnified structural diagram at point A.

[0015] The diagram is labeled as follows: 1. Straw mat bottom layer; 2. Hole; 3. Wear-resistant fiber ring; 4. Bamboo strip skeleton layer; 5. Concrete cuboid block; 6. Concrete cone block; 7. Bamboo strip block; 8. Bamboo strip; 9. Groove. Detailed Implementation

[0016] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0017] Key reference Figure 1-5 This device mainly consists of a three-layer structure, with a main size of 2m × 4m. The bottom layer is a straw mat bottom layer 1, which serves to connect the entire structure. The straw mat extends 20mm beyond the edge and has holes 2 on its outer edge for connecting to the surrounding straw mat bottom layer 1. The middle layer is a bamboo frame layer 4, which includes multiple bamboo strips 7 connected by ropes. The top layer is a concrete layer, composed of different concrete blocks, namely rectangular concrete blocks 5 and conical concrete blocks 6, arranged alternately to form the concrete layer. The combination of concrete blocks is mainly to mitigate rainwater erosion and reduce the potential energy of water flow, thus reducing the damage of rainwater to the bottom of the foundation pit. This slope protection blanket can be transported flat or rolled into a cylinder.

[0018] Straw mat bottom layer 1: Materials: Woven from natural rice straw or coconut fiber, 5-10mm thick, with pores ≤5mm, providing initial drainage channels.

[0019] The edge extends 20mm, and wear-resistant fiber rings 3, such as hemp rope, are pre-embedded in the eyelets 2 to enhance the connection strength.

[0020] Bamboo strip skeleton layer 4: The bamboo frame layer 4 includes multiple bamboo strip blocks 7, which are connected by ropes.

[0021] Bamboo strips 7 are 30-50mm wide and 3-5mm thick. They are treated with preservatives such as soaking in tung oil and have a tensile strength ≥150MPa.

[0022] The mesh size is 200mm×200mm, with an interlaced weave, and the nodes are fixed with biodegradable adhesive.

[0023] Concrete surface layer: Concrete cuboid block 5 (dimensions 200mm×200mm×50mm) and concrete cone block 6 (bottom diameter 200mm, height 60mm) are arranged alternately, with the concrete cone block 6 tilted at an angle of 15° to guide rainwater.

[0024] Both the concrete cuboid block 5 and the concrete cone block 6 have grooves 9 at their bottoms. Multiple bamboo strips 8 are installed on the bamboo strip block 7, and the bamboo strips 8 are stuck in the grooves 9. The surface of the bamboo strip skeleton layer 4 is covered with concrete, and the concrete cone block 6 and the concrete cuboid block 5 are pressed and fixed on the concrete.

[0025] Adding 5% rice husk ash to concrete improves its crack resistance and increases its degradation rate.

[0026] Construction process: Step 1: Conduct a thorough briefing before construction, clearly explaining the key points of assembling the slope protection blanket to the construction personnel; Step 2: Check that all parts of the slope protection blanket are intact. Do not use blankets that are damaged or incomplete. After the inspection is completed, lay the blanket on the slope of the foundation pit. Step 3: Lay the blankets from top to bottom and from widest to narrowest. Use bamboo strips or other binding materials to tie adjacent blankets together. The next blanket can only be laid after they are properly connected. Step 4: If the temperature is too high, sprinkle an appropriate amount of water to moisten the straw mat before laying it out; Step 5: Spray pH-neutral water to moisturize the straw mats during hot weather. Remove them 48 hours before backfilling, recycle them in reverse, and compost the damaged parts.

[0027] Technical effects: Costs are reduced by more than 40% (compared to traditional metal-framed slope protection blankets).

[0028] Biodegradability ≥90% (straw mats and bamboo strips decompose naturally, and rice husk ash promotes degradation after concrete blocks are broken).

[0029] The straw mat layer provides an initial drainage channel, improving drainage efficiency by 30% and preventing initial water accumulation.

[0030] Conical concrete blocks reduce the kinetic energy of rainwater runoff by more than 50%.

[0031] The bamboo strips have a tensile strength of 150MPa, which meets the requirements for lateral pressure in the foundation pit.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer, characterized in that, include: The bottom layer of the straw mat (1) has multiple holes (2) on all four sides. A bamboo frame layer (4) is installed on the straw mat bottom layer (1), and the straw mat bottom layer (1) extends beyond the outer edge of the bamboo frame layer (4). A concrete layer is installed on the side of the bamboo frame layer (4) away from the straw mat bottom layer (1). The concrete layer includes concrete cone blocks (6) and concrete cuboid blocks (5). Multiple concrete cone blocks (6) and concrete cuboid blocks (5) are installed on the bamboo frame layer (4). The concrete cone blocks (6) and concrete cuboid blocks (5) are distributed at intervals.

2. The foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 1, characterized in that, Abrasion-resistant fiber rings (3) are fixedly installed in each of the multiple holes (2), and adjacent straw mat bottom layers (1) are connected by ropes and abrasion-resistant fiber rings (3).

3. The foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 2, characterized in that, The straw mat bottom layer (1) has a thickness of 5-10 mm and a pore size of ≤5 mm.

4. The foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 3, characterized in that, The bamboo frame layer (4) includes multiple bamboo strips (7), which are fixedly installed by ropes and on the straw mat bottom layer (1) by ropes.

5. A foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 4, characterized in that, Multiple bamboo strips (8) are installed on the bamboo block (7). The bottom of the concrete cone block (6) and the concrete cuboid block (5) are provided with grooves (9). The multiple grooves (9) are respectively inserted into the multiple bamboo strips (8). The surface of the bamboo block (7) is provided with concrete that cooperates with and is fixed to the concrete cuboid block (5) and the concrete cone block (6).

6. A foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 5, characterized in that, The outer wall of the concrete cone block (6) is inclined at a 15-degree angle.

7. A foundation pit concrete slope protection blanket based on a bamboo frame and a straw mat bottom layer as described in claim 6, characterized in that, Rice husk ash is placed inside the concrete cone block (6) and the concrete cuboid block (5).

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