A device for preventing the silting of a trench

Abstract

This utility model discloses a moisture-retaining device for preventing clogging of infiltration ditches, comprising a soil substrate and a water collection pit. A trapezoidal erosion-resistant concrete-lined irrigation channel is laid on top of the soil substrate. Several planting grooves are formed on both the front and rear sides of the inner wall of the trapezoidal erosion-resistant concrete-lined irrigation channel. An HDPE infiltration pipe is installed inside the soil substrate, below the trapezoidal erosion-resistant concrete-lined irrigation channel. This utility model, through the combination of the trapezoidal erosion-resistant concrete-lined irrigation channel and the HDPE infiltration pipe, forms a "surface irrigation + deep infiltration" double-layer structure ditch. The use of a trapezoidal erosion-resistant concrete-lined irrigation channel in the surface irrigation channel not only meets the needs of conventional irrigation water delivery but also, by planting water-purifying plants such as foxtail algae in the planting grooves, can initially intercept suspended pollutants in surface runoff. The deep infiltration system consists of an HDPE infiltration pipe laid below the surface irrigation channel, with the periphery of the HDPE infiltration pipe filled with a zeolite-biochar composite matrix for adsorbing nitrogen and phosphorus.

Description

Technical Field

[0001] This utility model relates to the field of high-standard farmland technology, specifically to a moisture-retaining device for preventing seepage ditches from becoming silted up. Background Technology

[0002] High-standard farmland refers to arable land that is flat, contiguous, well-equipped, has complete farmland facilities, fertile soil, a sound ecological environment, and strong disaster resistance. It is designed to be drought- and flood-resistant, ensuring high and stable yields, and is suitable for modern agricultural production and management methods. The construction of high-standard farmland is a key measure to consolidate and improve grain production capacity and safeguard national food security.

[0003] In some mountainous areas, there are challenges such as rapid surface runoff, insufficient deep water infiltration, and easy entry of agricultural non-point source pollution into rivers and reservoirs (requiring reduction of nitrogen and phosphorus loss to meet the requirement of "ensuring the continuous northward transfer of clean water from the reservoir"). To address these technical issues, we have designed a moisture-retaining device to prevent siltation of infiltration ditches. Utility Model Content

[0004] The purpose of this utility model is to provide a moisture-retaining device that prevents seepage ditch clogging. It has the advantages of surface irrigation and deep infiltration, and solves the problems of rapid surface runoff, insufficient deep water infiltration, and easy entry of agricultural non-point source pollution into rivers and reservoirs in mountainous areas.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil moisture retention device for preventing seepage ditch clogging, comprising a soil matrix and a water collection pit. A trapezoidal anti-erosion concrete-lined water channel is laid on the top of the soil matrix. Several planting grooves are opened on both the front and rear sides of the inner wall of the trapezoidal anti-erosion concrete-lined water channel. An HDPE seepage pipe is installed inside the soil matrix and below the trapezoidal anti-erosion concrete-lined water channel. Several seepage holes are opened on the outside of the HDPE seepage pipe. Zeolite-biochar composite matrix is ​​filled between the outside of the HDPE seepage pipe and the soil matrix. An adjustable slope guide component is installed on the right side of the trapezoidal anti-erosion concrete-lined water channel. A discharge pipe is connected to the left side of the bottom of the HDPE seepage pipe through a flange. A telescopic pipe is fixedly sleeved on the bottom of the discharge pipe. Several water inlets are opened on the top of the water collection pit. A limit frame is connected to the top of the water collection pit and outside the water inlets. An isolation cover is sleeved on the outside of the limit frame. A slot for use with the telescopic pipe is opened through the top of the isolation cover.

[0006] Preferably, an external drain pipe is connected to the bottom of the left side of the water collection cellar, and a manual valve is installed on the external drain pipe.

[0007] Preferably, the HDPE seepage pipe is located 80-60cm below the trapezoidal erosion-resistant concrete-lined water channel.

[0008] Preferably, the adjustable slope guiding component includes an adjustable slope guiding plate, which is located on the right side of the trapezoidal anti-erosion concrete-lined water channel.

[0009] Preferably, transition plates are connected to both the left and right sides of the adjustable slope guide plate, and sealing inserts are connected to the side of the transition plates away from the adjustable slope guide plate. A sealing installation groove for use with the sealing inserts is provided on the right side of the trapezoidal anti-scour concrete-lined water channel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes a combination of HDPE infiltration pipes, a discharge pipe, an isolation cover, a telescopic pipe, a trapezoidal erosion-resistant concrete-lined irrigation canal, planting grooves, adjustable slope guiding components, infiltration holes, a zeolite-biochar composite matrix, a water collection cellar, and a sealed installation groove. It combines the advantages of surface irrigation with deep infiltration. The combination of the trapezoidal erosion-resistant concrete-lined irrigation canal and the HDPE infiltration pipe creates a "surface irrigation + deep infiltration" dual-layer structure ditch. By using a trapezoidal erosion-resistant concrete-lined irrigation canal for surface irrigation, it not only meets the needs of conventional irrigation but also further utilizes planting... Planting water-purifying plants such as foxtail algae in the grooves can initially intercept suspended pollutants in surface runoff. The deep infiltration trench system consists of HDPE infiltration pipes laid beneath the surface irrigation canals. The perimeter of the HDPE infiltration pipes is filled with a zeolite-biochar composite matrix to adsorb nitrogen and phosphorus. The ends of the HDPE infiltration pipes correspond to the collection cisterns, realizing a cycle of "excess irrigation water / rainfall → infiltration through the infiltration pipes → matrix purification → deep water replenishment". Furthermore, adjustable slope guide plates are added to adapt to mountain slopes of 0-25°, preventing clogging of the infiltration trenches and controlling the infiltration rate to avoid excessive water loss or water accumulation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 A partial view of the left side; Figure 3 This is a top view of a partial structure of the trapezoidal anti-erosion concrete-lined water channel of this utility model; Figure 4 This is a top view of the adjustable slope guide component of this utility model.

[0012] In the diagram: 1. Soil matrix; 2. HDPE infiltration pipe; 3. Feed pipe; 4. Isolation cover; 5. Groove opening; 6. Limiting frame; 7. Inlet; 8. Expansion pipe; 9. Trapezoidal anti-erosion concrete-lined water channel; 10. Planting groove; 11. Adjustable slope guide component; 111. Transition plate; 112. Adjustable slope guide plate; 113. Sealing insert plate; 12. Infiltration hole; 13. Zeolite-biochar composite matrix; 14. Outer discharge pipe; 15. Water collection cellar; 16. Sealing installation groove. Detailed Implementation

[0013] Please see Figures 1-4 A soil moisture retention device for preventing seepage ditch clogging includes a soil matrix 1 and a water collection pit 15. A trapezoidal erosion-resistant concrete-lined water channel 9 is laid on top of the soil matrix 1. Several planting grooves 10 are formed on both the front and rear sides of the inner wall of the trapezoidal erosion-resistant concrete-lined water channel 9. An HDPE seepage pipe 2 is installed inside the soil matrix 1 and below the trapezoidal erosion-resistant concrete-lined water channel 9. Several seepage holes 12 are formed on the outside of the HDPE seepage pipe 2. A zeolite-biochar composite matrix 13 is filled between the outside of the HDPE seepage pipe 2 and the soil matrix 1. An adjustable slope guide component 11 is installed on the right side of the trapezoidal erosion-resistant concrete-lined water channel 9. A discharge pipe 3 is connected to the left side of the bottom of the E-permeable pipe 2 via a flange. A telescopic pipe 8 is fixedly fitted to the bottom of the discharge pipe 3. Several water inlets 7 are opened at the top of the water collection cellar 15. A limiting frame 6 is connected to the top of the water collection cellar 15 and outside the water inlets 7. An isolation cover 4 is fitted outside the limiting frame 6. A slot 5 for use with the telescopic pipe 8 is opened through the top of the isolation cover 4. The trapezoidal anti-scour concrete-lined water channel 9 meets the needs of conventional irrigation water delivery. Water purification plants such as foxtail algae are planted in the planting groove 10 to initially intercept suspended pollutants in surface runoff. The zeolite-biochar composite matrix 13 is used to adsorb nitrogen and phosphorus to ensure the continuous delivery of clean water. The combination of the trapezoidal anti-scour concrete-lined water channel 9, HDPE permeable pipe 2 and zeolite-biochar composite matrix 13 realizes the cycle of "irrigation surplus water / rainfall → permeable pipe infiltration → matrix purification → deep water replenishment". The isolation cover 4 can be limited by the limiting frame 6 to prevent it from moving freely on the top of the water collection cellar 15. The expansion joint 8 can pass through the isolation cover 4 through the slot 5 to inject water into the water collection cellar 15.

[0014] The bottom left side of the water collection cellar 15 is connected to an external drain pipe 14, and a manual valve is installed on the external drain pipe 14; the water in the water collection cellar 15 is conveniently discharged through the cooperation of the external drain pipe 14 and the manual valve.

[0015] HDPE seepage pipe 2 is located 80-60cm below the trapezoidal anti-scour concrete-lined water channel 9; The adjustable slope guide component 11 includes an adjustable slope guide plate 112, which is located on the right side of the trapezoidal anti-erosion concrete-lined water channel 9. The adjustable slope guide plate 112 is suitable for mountain slopes of 0-25°, can prevent seepage ditch blockage, and control the seepage rate to avoid water loss or water accumulation.

[0016] Both sides of the adjustable slope guide plate 112 are connected to transition plates 111. The side of the transition plate 111 away from the adjustable slope guide plate 112 is connected to a sealing insert plate 113. The right side of the trapezoidal anti-scour concrete-lined water channel 9 is provided with a sealing installation groove 16 that cooperates with the sealing insert plate 113. Through the cooperation of the sealing insert plate 113 and the sealing installation groove 16, the adjustable slope guide component 11 is conveniently positioned and installed with the trapezoidal anti-scour concrete-lined water channel 9. The two trapezoidal anti-scour concrete-lined water channels 9 can be connected by using the adjustable slope guide component 11.

[0017] In use, the trapezoidal anti-scour concrete-lined water channel 9 and HDPE infiltration pipe 2 work together to form a double-layer structure ditch of "surface irrigation + deep infiltration". The trapezoidal anti-scour concrete-lined water channel 9 in the surface irrigation channel not only meets the conventional irrigation water delivery needs, but also uses water-purifying plants such as foxtail algae planted in the planting groove 10 to initially intercept suspended pollutants in surface runoff. The deep infiltration ditch system consists of HDPE infiltration pipe 2 laid below the surface irrigation channel. The periphery of HDPE infiltration pipe 2 is filled with zeolite-biochar composite matrix 13 for adsorbing nitrogen and phosphorus. The end of HDPE infiltration pipe 2 corresponds to the water collection cellar 15, realizing the cycle of "irrigation surplus water / rainfall → infiltration pipe infiltration → matrix purification → deep water replenishment".

[0018] Further, a terrain-adaptive component, the adjustable slope guide plate 112, is designed to adapt to mountain slopes of 0-25°, preventing clogging of infiltration ditches and controlling the infiltration rate to avoid excessive water loss or water accumulation. Furthermore, this application also incorporates the functions of "irrigation and moisture retention, deep water replenishment, and non-point source pollution interception," supporting the "synergistic effect of irrigation ditches and deep infiltration ditches" to achieve the goal of "reducing nitrogen inflow into water bodies by more than 300 tons" in the comprehensive management of small watersheds.

[0019] In summary, this moisture-retaining device for preventing seepage ditch clogging, through the combined use of HDPE seepage pipe 2, discharge pipe 3, isolation cover 4, expansion pipe 8, trapezoidal anti-erosion concrete-lined water channel 9, planting groove 10, adjustable slope guiding component 11, seepage hole 12, zeolite-biochar composite matrix 13, water collection cellar 15, and sealing installation groove 16, solves the problems of rapid surface runoff, insufficient deep water infiltration, and easy entry of agricultural non-point source pollution into rivers and reservoirs in mountainous areas.

Claims

1. A device for preventing the clogging of a seepage ditch, comprising a soil base (1) and a water collection cellar (15), characterized in that: The top of the soil matrix (1) is covered with a trapezoidal anti-erosion concrete-lined water channel (9). Several planting grooves (10) are opened on both the front and back sides of the inner wall of the trapezoidal anti-erosion concrete-lined water channel (9). An HDPE infiltration pipe (2) is set inside the soil matrix (1) and below the trapezoidal anti-erosion concrete-lined water channel (9). Several infiltration holes (12) are opened on the outside of the HDPE infiltration pipe (2). Zeolite-biochar composite matrix (13) is filled between the outside of the HDPE infiltration pipe (2) and the soil matrix (1). An adjustable slope guide component (11) is installed on the right side of the lined water channel (9). A feed pipe (3) is connected to the left side of the bottom of the HDPE seepage pipe (2) via a flange. A telescopic pipe (8) is fixedly fitted on the bottom of the feed pipe (3). Several water inlets (7) are opened on the top of the water collection cellar (15). A limit frame (6) is connected to the top of the water collection cellar (15) and outside the water inlets (7). An isolation cover (4) is fitted on the outside of the limit frame (6). A slot (5) for use with the telescopic pipe (8) is opened through the top of the isolation cover (4).

2. The moisture-retaining device for preventing siltation in seepage ditches according to claim 1, characterized in that: The bottom left side of the water collection cellar (15) is connected to an external drain pipe (14), and a manual valve is installed on the external drain pipe (14).

3. The moisture-retaining device for preventing siltation in seepage ditches according to claim 1, characterized in that: The HDPE seepage pipe (2) is located 80-60cm below the trapezoidal anti-erosion concrete-lined water channel (9).

4. A moisture-retaining device for preventing siltation in seepage ditches according to claim 1, characterized in that: The adjustable slope guide component (11) includes an adjustable slope guide plate (112), which is located on the right side of the trapezoidal anti-erosion concrete-lined water channel (9).

5. A moisture-retaining device for preventing siltation in seepage ditches according to claim 4, characterized in that: The slope guide plate (112) is connected to transition plates (111) on both the left and right sides. The transition plate (111) is connected to a sealing insert plate (113) on the side away from the slope guide plate (112). The trapezoidal anti-scour concrete-lined water channel (9) has a sealing installation groove (16) on the right side that is used in conjunction with the sealing insert plate (113).

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