Sponge city application background under the permeable rainwater ditch structure

Abstract

The utility model discloses a kind of infiltration type rainwater ditch structures under the application background of sponge city, it includes in rainwater ditch setting area excavation after the groove inner bottom along length direction is laid a layer of coarse sand and is constituted coarse sand cushion, the upper side of coarse sand cushion and along the closed installation of water-permeable geotextile around groove, water-permeable geotextile is backfilled graded broken stone, graded broken stone is installed in infiltration type standardization rainwater ditch, the both sides of infiltration type standardization rainwater ditch are covered water-permeable geotextile, top is not covered water-permeable geotextile, lateral water seepage hole is arranged on the both sides of infiltration type standardization rainwater ditch, bottom water seepage hole is arranged on the bottom of infiltration type standardization rainwater ditch, infiltration type standardization rainwater ditch and rainwater well are communicated rainwater connecting pipe, rainwater grate is covered on the top of infiltration type standardization rainwater ditch, thereby greatly improve construction efficiency and construction quality, make the water collection, drainage, water storage, seepage and drainage function of rainwater ditch more perfect, fully secondary use of rainwater.

Description

Technical Field

[0001] This utility model relates to the field of rainwater drainage technology, and in particular to a permeable rainwater drainage structure in the context of sponge city applications. Background Technology

[0002] Storm drains are essential facilities in building and road engineering, primarily used to drain rainwater, ensuring the dryness and cleanliness of the surrounding environment and preventing urban flooding. Proper design and construction of storm drains not only contribute to their durability but are also crucial for the normal operation of buildings and the surrounding environment, and are an important part of sponge city construction.

[0003] Common methods for constructing rainwater drainage systems include: ① prefabricated, standardized rainwater drainage ditches; ② brick-built rainwater drainage ditches. These systems involve excavating trenches on the surface to collect and drain rainwater, followed by the installation of drainage wells or pipes. However, because the area around the drainage ditch is subsequently backfilled with sand, the backfill soil on both sides of the ditch is prone to settlement due to water accumulation, making it difficult to guarantee the construction quality and drainage effectiveness of the rainwater drainage system. Furthermore, in the context of vigorously promoting the development of sponge city construction, traditional rainwater drainage systems cannot collect and reuse rainwater, failing to meet the water storage and drainage requirements of sponge city construction. Utility Model Content

[0004] This utility model addresses the problems and shortcomings of existing technologies by providing a novel permeable rainwater ditch structure for sponge city applications. This structure facilitates the construction and installation of rainwater ditches, ensures the completion quality and drainage effect of rainwater ditches, and meets the requirements of secondary collection, storage, and utilization of rainwater under the construction needs of sponge cities.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a permeable rainwater ditch structure under the background of sponge city application. Its features include: a coarse sand cushion layer laid along the length of the bottom of the trench after excavation in the rainwater ditch area; a permeable geotextile installed above the coarse sand cushion layer and enclosed around the trench; graded crushed stone backfilled within the permeable geotextile; a permeable shaped rainwater ditch installed within the graded crushed stone; the graded crushed stone on both sides of the permeable shaped rainwater ditch covered with permeable geotextile, while the top is not covered with permeable geotextile; lateral seepage holes spaced apart on both sides of the permeable shaped rainwater ditch; bottom seepage holes spaced apart on the bottom of the permeable shaped rainwater ditch; a rainwater connecting pipe connecting the permeable shaped rainwater ditch to a rainwater well; and a rainwater ditch grate covering the top of the permeable shaped rainwater ditch.

[0007] Preferably, the permeable, shaped rainwater ditch has vertically arranged lateral infiltration holes spaced apart along its length on both sides, and the lateral infiltration holes are parallel to each other.

[0008] Preferably, the bottom of the permeable shaped rainwater ditch is provided with bottom seepage holes spaced apart along its length, and the bottom seepage holes are parallel to each other.

[0009] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0010] The positive and progressive effects of this utility model are as follows:

[0011] This utility model presents a permeable rainwater ditch structure for sponge city applications, solving the current deficiencies in urban rainwater system applications. For example, firstly, by optimizing traditional standardized rainwater pipes, the permeable rainwater ditch structure allows for prefabrication in a factory or on-site, significantly improving construction efficiency and quality compared to traditional rainwater ditches with issues such as brickwork, backfilling settlement and deformation, and water accumulation. Secondly, the overall structure, tailored to the needs of sponge city construction, innovates the rainwater ditch construction compared to traditional rainwater ditches that only have water collection and drainage functions. This makes the rainwater ditch's functions of water collection, drainage, storage, and infiltration more complete, delaying rainwater drainage time, reducing drainage pressure on the rainwater pipe network, supplementing rainwater infiltration channels, and fully utilizing rainwater for secondary purposes. Attached Figure Description

[0012] Figure 1 This is a detailed cross-sectional view of the permeable rainwater ditch structure according to a preferred embodiment of the present invention.

[0013] Figure 2 This is a longitudinal cross-sectional detail of the permeable rainwater ditch structure of a preferred embodiment of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1-2As shown, this embodiment provides a permeable rainwater ditch structure under the background of sponge city application. It includes a coarse sand cushion layer 6 laid along the length of the bottom of the trench after excavation in the rainwater ditch area. A permeable geotextile 5 is installed above the coarse sand cushion layer 6 and enclosed around the perimeter of the trench. Graded crushed stone 3 is backfilled inside the permeable geotextile 5. A permeable shaped rainwater ditch 2 is installed inside the graded crushed stone 3. The graded crushed stone on both sides of the permeable shaped rainwater ditch 2 is covered with permeable... The permeable geotextile 5 is not covered on the top. The permeable shaped rainwater ditch 2 has vertically arranged lateral seepage holes 7 spaced apart on both sides. The lateral seepage holes 7 are parallel to each other. The bottom of the permeable shaped rainwater ditch 2 has longitudinally arranged bottom seepage holes 8 spaced apart. The bottom seepage holes 8 are parallel to each other. The permeable shaped rainwater ditch 2 is connected to the rainwater well (not shown in the figure) by a rainwater connecting pipe 4. The top of the permeable shaped rainwater ditch 2 is covered with a rainwater ditch grate 1.

[0016] This embodiment mainly combines sponge city construction applications to provide a permeable rainwater ditch structure. The permeable rainwater ditch structure optimizes and improves the existing prefabricated rainwater ditch, which is uniformly produced in the factory. Lateral infiltration holes 7 are added to both sides of the permeable prefabricated rainwater ditch 2 for side drainage of rainwater, and bottom infiltration holes 8 are added to the bottom of the permeable prefabricated rainwater ditch 2 for bottom drainage of rainwater. Rainwater connecting pipes 4 are laid in conjunction with the existing rainwater well locations to connect to the permeable prefabricated rainwater ditch 2. The elevation of the rainwater connecting pipes 4 can be appropriately raised to allow for overflow treatment to meet the drainage needs of the ditch when the rainwater volume is too large. When the rainwater volume is small, rainwater can be infiltrated and drained through the lateral infiltration holes 7 and the bottom infiltration holes 8. The trench excavation treatment for the installation of the rainwater collection inlet is improved. Graded crushed stone 3 is set around the rainwater collection inlet and covered with geotextile 5 to meet the requirements of rainwater infiltration and utilization and mud separation.

[0017] The construction process of the permeable rainwater ditch structure in this embodiment is as follows: the area where the rainwater ditch is to be set out and excavated is excavated. After the trench is excavated, a coarse sand cushion layer 6 is laid. If the bearing capacity meets the requirements, the permeable geotextile 5 is installed around the trench. Then, graded crushed stone 3 is backfilled into the permeable geotextile 5. After the graded crushed stone 3 is backfilled in place (about 10cm thick), the permeable shaped rainwater ditch 2 is installed in the graded crushed stone 3. The remaining graded crushed stone 3 is backfilled on both sides of the permeable shaped rainwater ditch 2 and covered with the permeable geotextile 5 to prevent sand and soil from blocking the rainwater ditch's drainage channels during water collection.

[0018] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A permeable rainwater drainage ditch structure under the background of sponge city application, characterized in that, It includes laying a layer of coarse sand along the length of the bottom of the trench after the excavation of the rainwater ditch area, forming a coarse sand cushion layer. A permeable geotextile is installed on top of the coarse sand cushion layer and enclosed around the perimeter of the trench. Graded crushed stone is backfilled inside the permeable geotextile. A permeable shaped rainwater ditch is installed inside the graded crushed stone. The graded crushed stone on both sides of the permeable shaped rainwater ditch is covered with permeable geotextile, while the top is not covered with permeable geotextile. Lateral seepage holes are spaced apart on both sides of the permeable shaped rainwater ditch. Bottom seepage holes are spaced apart on the bottom of the permeable shaped rainwater ditch. A rainwater connecting pipe connects the permeable shaped rainwater ditch to the rainwater well. A rainwater ditch grate is installed on the top of the permeable shaped rainwater ditch.

2. The permeable rainwater ditch structure under the application background of sponge city as described in claim 1, characterized in that, The permeable, shaped rainwater ditch has vertically arranged lateral seepage holes spaced along its length on both sides, and the lateral seepage holes are parallel to each other.

3. The infiltrated rainwater ditch structure under the application background of sponge cities as described in claim 1, characterized in that, The bottom of the permeable, shaped rainwater ditch is provided with bottom seepage holes spaced apart along its length, and the bottom seepage holes are parallel to each other.

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