Lake rainwater interception and purification device

Abstract

The utility model discloses a lake rainwater interception and purification device which comprises a groove with the upper side being an opening side, the groove is used for being filled with a cobblestone layer, the section of the groove is in a U shape, the bottom of the groove is embedded into an embankment slope, the opening side of the upper side of the groove is flush with the embankment face, and the side wall, corresponding to the embankment upslope section, of the groove is provided with an extending section. A round hole is formed in the side wall, corresponding to the embankment downhill section, of the groove and close to the bottom of the groove, a drainage pipe is inserted into the round hole, and water seepage holes are formed in the corresponding side wall of the part, extending into the groove, of the drainage pipe. During construction, earthwork is excavated corresponding to the slope section of the embankment, then the groove is built, the drainage pipe is installed, earthwork is backfilled around the groove and the drainage pipe, and the pipe opening side of the reserved drainage pipe is smooth. And meanwhile, the strength of the groove and the deep extension section of the soil layer can improve the bearing capacity of the embankment, and water and soil loss on the bank of the lake is prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering structures, and in particular relates to a lake rainwater interception and purification device. Background Technology

[0002] Constructing lake ecological wetlands will enhance the lake's ability to intercept and purify low-pollution water from rivers and polder areas flowing into the lake. Most lake banks are gentle slopes with a certain gradient. As a low-lying geographical location, the lake possesses functions such as water storage, integrated ecology, and environmental purification.

[0003] To improve the purification capacity of lakes, in addition to reducing garbage pollution, it is also necessary to prevent lake water pollution caused by rainwater runoff, especially during the summer rainy season. Large amounts of rainwater flow into lakes, carrying silt and various types of garbage, which can easily cause water pollution. At the same time, rainwater flow can easily cause soil from the lake embankments to enter the lake, leading to shallowing of the lake and potential damage to surrounding buildings, roads, and usable land due to embankment erosion. Therefore, this utility model, based on the characteristics of lake embankments, employs ecological construction methods, building interception devices at the embankments to purify rainwater and prevent the embankment soil from becoming loose. Utility Model Content

[0004] The purpose of this utility model is to provide a lake rainwater interception and purification device. Based on the characteristics of the lake embankment, an ecological construction method is adopted to build interception equipment at the embankment to purify rainwater and prevent the embankment soil from becoming loose.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A lake rainwater interception and purification device includes a ditch with an open upper side, the ditch being filled with a layer of pebbles, the ditch having a U-shaped cross-section, the bottom of which is embedded in the embankment slope, the upper open side of the ditch being flush with the embankment surface, and the ditch having an extension section on the sidewall corresponding to the upper slope section of the embankment, the extension section being embedded deep in the soil layer.

[0007] The ditch has a circular hole on the side wall corresponding to the downslope section of the embankment. The circular hole is close to the bottom of the ditch and extends along the length of the ditch. A drainage pipe is inserted into the circular hole, and the part of the drainage pipe that extends into the ditch has a seepage hole on the corresponding side wall.

[0008] Furthermore, a pipe groove is provided at the bottom of the trench corresponding to the position of the circular hole. The cross-section of the pipe groove is semi-circular and is used to accommodate the portion of the drain pipe extending into the trench.

[0009] Furthermore, a filter screen is installed above the pipe trench. The filter screen has an arc-shaped cross-section and is used to cover the upper part of the drain pipe.

[0010] The filter screen is fixed to the structural frame, which has an arc-shaped, hollow cross-section. Support plates are located on both sides of the structural frame along its length, aligning with the bottom of the trench to provide support. The support plates have positioning holes, and positioning posts are provided at the bottom of the trench for insertion into these holes.

[0011] This invention offers the following advantages: A drainage pipe connects to the bottom of the trench, allowing rainwater to seep through infiltration holes into the pipe. The other end of the drainage pipe is located on the lower slope of the embankment, guiding the filtered rainwater (after passing through pebbles) into the lake. The entire trench is embedded, and during construction, earthwork is first excavated according to the embankment slope, then the trench is built, the drainage pipe is installed, and the area around the trench and drainage pipe is backfilled, ensuring unobstructed access at the pipe opening. This design not only intercepts and filters large volumes of rainwater, but also enhances the embankment's bearing capacity due to the trench's strength and the extended section deep within the soil layer, preventing soil erosion along the lake shore. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0013] Figure 1 : A structural diagram of this utility model in its disassembled state.

[0014] Figure 2 : A schematic diagram of the structure of this utility model in its assembled state.

[0015] Figure 3 : Schematic diagram of the structure after construction of this utility model.

[0016] The components represented by each number in the attached diagram are listed below: 1. Groove, 11. Extension section, 12. Circular hole, 2. Drainage pipe, 21. Seepage hole, 13. Pipe groove, 3. Filter screen, 4. Structural frame, 41. Support plate, 42. Positioning hole, 5. Positioning post. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figures 1-3The diagram shows a lake rainwater interception and purification device, comprising a ditch 1 with an open upper side, filled with a layer of pebbles. The ditch 1 has a U-shaped cross-section, with its bottom embedded in the embankment slope. The open upper side of the ditch 1 is flush with the embankment surface. The sidewall of the ditch 1 corresponding to the upslope section of the embankment has an extension section 11 embedded deep into the soil. The ditch is constructed of bricks with a cement protective layer on the surface. The wall thickness of the ditch is approximately 10cm, making it durable and preventing soil pollution due to rotting or decomposition. It also avoids deformation under load after being embedded in the soil. The pebbles filling the ditch filter impurities and block silt, while water further permeates to the bottom of the ditch.

[0019] A circular hole 12 is provided on the side wall of the ditch 1 corresponding to the downslope section of the embankment. The circular hole 12 is close to the bottom of the ditch 1 and extends along the length of the ditch 1. A drainage pipe 2 is inserted into the circular hole 12. The part of the drainage pipe 2 that extends into the ditch has a seepage hole 21 on the corresponding side wall.

[0020] The bottom of the ditch is connected to a drainage pipe. Rainwater seeps down and enters the drainage pipe through infiltration holes. The other end of the drainage pipe is located on the lower slope of the embankment, used to guide rainwater filtered by pebbles into the lake. The entire ditch is embedded. During construction, earthwork is first excavated according to the embankment slope, then the ditch is built, the drainage pipe is installed, and the area around the ditch and drainage pipe is backfilled, ensuring unobstructed access at the pipe opening. This not only intercepts and filters large volumes of rainwater, but the strength of the ditch and its extension into the deeper soil layer also improve the embankment's load-bearing capacity, preventing soil erosion along the lake shore.

[0021] like Figure 1 As shown: A pipe groove 13 is provided at the bottom of the trench 1 corresponding to the position of the circular hole. The cross-section of the pipe groove 1 is semi-circular arc-shaped, used to accommodate the portion of the drain pipe 2 that extends into the trench 1. The diameter of the pipe groove is larger than the diameter of the drain pipe, so that there is a gap between the drain pipe and the side wall of the pipe groove, allowing water in the trench to enter the interior of the drain pipe from multiple positions, thereby increasing the drainage rate.

[0022] A filter screen 3 is installed above the drainage trough 13. The filter screen 3 has an arc-shaped cross-section and is used to cover the upper part of the drainage pipe 2. The filter screen is used to block small particles such as stones and silt from entering the drainage pipe and prevent it from becoming clogged. The filter screen 3 is fixed to the structural frame 4. The structural frame 4 has an arc-shaped cross-section and a hollow structure. The structural frame 4 has support plates 41 on both sides along its length, which are used to overlap with the bottom of the trough 1 to form support. Fixing the filter screen to the structural frame improves the support performance of the filter screen and prevents it from being squeezed and deformed by the pebbles on the upper side.

[0023] The support plate 41 has positioning holes 42, and the bottom of the groove 1 has positioning posts 5 for insertion into the positioning holes 42. The positioning posts are metal nails, which are set at the positions corresponding to the positioning holes to position the frame and prevent the frame from shifting when pebbles are placed in.

[0024] These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of this utility model, so that those skilled in the art can better understand and utilize this utility model.

Claims

1. A lake rainwater interception and purification device, characterized in that: The application relates to a ditch (1) with an open upper side, which is filled with a pebble layer, the cross section of the ditch (1) is in the shape of a Chinese character 'fang', the bottom is embedded into a bank slope, the upper open side of the ditch (1) is flush with the bank surface, the ditch (1) has an extension section (11) corresponding to the side wall of the bank uphill section, the extension section (11) is embedded into a deep soil layer. The ditch (1) is provided with a round hole (12) corresponding to the side wall of the bank downhill section, the round hole (12) is close to the bottom of the ditch (1) and is arranged in the length direction of the ditch (1), a drain pipe (2) is inserted into the round hole (12), the part of the drain pipe (2) extending into the ditch has water seepage holes (21) corresponding to the side wall.

2. The lake rainwater interception and purification device according to claim 1, characterized in that: The bottom of the ditch (1) is provided with a pipe groove (13) corresponding to the position of the round hole, the cross section of the pipe groove (13) is in the shape of a semicircle, and the pipe groove (13) is used for accommodating the part of the drain pipe (2) extending into the ditch (1).

3. The lake rainwater interception and purification device according to claim 2, characterized in that: A filter screen (3) is arranged above the pipe groove (13), the cross section of the filter screen (3) is in the shape of an arc, and the filter screen (3) is used for covering the upper part of the drain pipe (2).

4. The lake rainwater interception and purification device according to claim 3, characterized in that: The filter screen (3) is fixed to a structure frame (4), the cross section of the structure frame (4) is in the shape of an arc, the structure frame (4) is in a hollow structure, the structure frame (4) is provided with support plates (41) on two sides in the length direction, the support plates (41) are used for coinciding with the bottom of the ditch (1) to form support.

5. The lake rainwater interception and purification device according to claim 4, characterized in that: The support plates (41) are provided with positioning holes (42), and the bottom of the ditch (1) is provided with positioning columns (5) for the positioning holes (42).

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