A device for reconstructing the ecological environment of farmland drainage ditch base

Abstract

The application discloses a kind of for farmland drainage ditch base ecological environment reconstruction device, it is related to drainage ditch ecological environment reconstruction technical field, including several reconstruction main body, the reconstruction main body is used to install to the ditch bottom of the drainage ditch main body;At least one filler area and at least one plant area are equipped in the reconstruction main body, filler is filled in the filler area, aquatic plants are planted in the plant area;Water in the drainage ditch main body at least passes through one filler area and one plant area when passing through the reconstruction main body.The application can reconstruct the base ecological environment of existing drainage ditch main body, so that it can effectively remove impurities and nitrogen, phosphorus and other pollutants in water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological environment reconstruction of drainage ditch, in particular to a device for ecological environment reconstruction of the base of farmland drainage ditch. BACKGROUND

[0002] High-standard farmland construction generally ensures large contiguous field blocks, fills part of the ponds, low-lying land, etc. to cultivate, so the drainage ditch is changed into a straight hard drainage channel. Although it reduces the occupation of farmland area, the drainage ecological space is more cramped, that is, the space is more limited in the process of controlling farmland drainage pollution. In the aspect of farmland drainage source pollution control technology, ecological ditch is the most widely used technical measure, which uses the filtering, sedimentation, adsorption and degradation of soil, plants and microorganisms to effectively purify nitrogen and phosphorus pollutants. However, in high-standard farmland construction, in order to ensure smooth drainage and overall stability and safety of the field, hard drainage channels are generally used, that is, most of the drainage ditches in the field cannot be constructed as ecological ditches.

[0003] Therefore, there is an urgent need in the art for a device for ecological environment reconstruction of the base of farmland drainage ditch to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a device for ecological environment reconstruction of the base of farmland drainage ditch to solve the problems existing in the prior art, which can reconstruct the ecological environment of the existing drainage ditch body and effectively remove impurities and nitrogen and phosphorus pollutants in water.

[0005] To achieve the above purpose, the present application provides the following solutions:

[0006] The present application discloses a device for ecological environment reconstruction of the base of farmland drainage ditch, comprising a plurality of reconstruction bodies, the reconstruction body is used for installing to the ditch bottom of the drainage ditch body;

[0007] The reconstruction body is internally provided with at least one filler area and at least one plant area, the filler area is filled with filler, and the plant area is planted with aquatic plants;

[0008] The water in the drainage ditch body passes through at least one filler area and one plant area when passing through the reconstruction body.

[0009] Preferably, the reconstruction body comprises a peripheral frame, the peripheral frame is internally provided with a plurality of perforated flow-blocking water-permeable plates, the perforated flow-blocking water-permeable plates are provided with a plurality of first water-permeable holes, and the perforated flow-blocking water-permeable plates divide the interior of the peripheral frame into at least one filler area and at least one plant area.

[0010] Preferably, the peripheral frame is a rectangular frame, a center flow guide stabilizing pipe is fixed at the center of the peripheral frame, and four perforated flow resistance water permeable plates are provided, the first ends of the four perforated flow resistance water permeable plates are fixed to the outer wall of the center flow guide stabilizing pipe, and the second ends of the four perforated flow resistance water permeable plates are fixed to the inner four corners of the peripheral frame.

[0011] The four perforated flow resistance water permeable plates divide the inner part of the peripheral frame into two filler areas and two plant areas.

[0012] Preferably, the two filler areas are oppositely arranged, and the two plant areas are oppositely arranged.

[0013] Preferably, a plurality of second water permeable holes are arranged on both sides of the center flow guide stabilizing pipe, and the inside of the center flow guide stabilizing pipe is in communication with the two plant areas through the second water permeable holes.

[0014] Preferably, the length of one side of the peripheral frame is 0.5m-1.0m, the height of the peripheral frame is 0.3m-0.5m, and the wall thickness of the peripheral frame is 5mm-6mm.

[0015] The height of the perforated flow resistance water permeable plate is 0.3m-0.5m, and the wall thickness of the perforated flow resistance water permeable plate is 5mm-6mm.

[0016] The top surface of the center flow guide stabilizing pipe is flush with the top surface of the peripheral frame, or the top surface of the center flow guide stabilizing pipe is higher than the top surface of the peripheral frame, and the distance between the top surface of the center flow guide stabilizing pipe and the top surface of the peripheral frame is not more than 0.1m.

[0017] The inner diameter of the center flow guide stabilizing pipe is 1 / 4-1 / 3 of the length of one side of the peripheral frame.

[0018] Preferably, the filler in the filler area includes one or more of gravel, zeolite, volcanic rock, and glass pumice.

[0019] The aquatic plants in the plant area include irises.

[0020] Preferably, the upper surface of the filler area is used for planting aquatic plants, or a geotextile mat is installed on the upper surface of the filler area.

[0021] A backfill soil layer is arranged in the plant area.

[0022] Preferably, the drainage ditch main body is an ecological ditch or a hard drainage ditch.

[0023] Preferably, the bottom of the drainage ditch main body is provided with a mounting groove, and the improved main body is mounted in the mounting groove.

[0024] The drainage ditch body is connected with a farmland drainage pipe.

[0025] The present application has the following technical effects relative to the prior art:

[0026] The present application can improve the ecological environment of the drainage ditch body by placing the reconstruction body at the bottom of the drainage ditch body, filtering, precipitating and adsorbing impurities in the water and absorbing and degrading pollutants such as nitrogen and phosphorus when water flows in the drainage ditch body, through the filler in the filler layer and the aquatic plants in the plant layer in the reconstruction body. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort based on these drawings.

[0028] Figure 1 is a top view of the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application;

[0029] Figure 2 is a structural schematic view of the reconstruction body in the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application;

[0030] Figure 3 is a top view of the reconstruction body in the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application;

[0031] Figure 4 is a structural schematic view of the center flow guide stabilizing pipe in the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application; Figure 3 is an A-A sectional view of

[0032] Figure 5 is a B-B sectional view of Figure 3

[0033] Figure 6 is a top view of the center flow guide stabilizing pipe in the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application;

[0034] Figure 7 is a structural schematic view of the geotextile mat in the farmland drainage ditch base ecological environment reconstruction device according to the embodiment of the present application;

[0035] ​In the diagram: 1-main body of drainage ditch; 2-farmland drainage pipe; 3-main body of renovation; 301-outer frame; 302-perforated flow-blocking permeable board; 3021-first permeable hole; 303-central diversion and stabilizing pipe; 3031-second permeable hole; 304-filling area; 3041-geotextile mat; 305-vegetation area. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The purpose of this invention is to provide a device for ecological environment modification of farmland drainage ditch base, so as to solve the problems existing in the prior art, and to modify the ecological environment of the existing drainage ditch body, and to effectively remove impurities and pollutants such as nitrogen and phosphorus from the water.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-7 As shown, this embodiment provides a device for ecological environment modification of farmland drainage ditch base, including several modification bodies 3. The modification bodies 3 are used to be installed on the bottom of the drainage ditch body 1. The specific number of modification bodies 3 can be adjusted according to the size of the modification body 3 itself and the length of the modification section of the drainage ditch body 1. Adjacent modification bodies 3 can be set against each other or spaced apart.

[0040] The main body 3 is equipped with at least one filler zone 304 and at least one plant zone 305. The filler zone 304 is filled with filler material, which can effectively filter impurities in the water. The plant zone 305 is planted with aquatic plants, which are used to degrade pollutants such as nitrogen and phosphorus in the water.

[0041] The number and location of the filler zone 304 and the plant zone 305 can be varied, but they must meet the requirement that when water in the main body 1 of the drainage ditch passes through the modified main body 3, it will pass through at least one filler zone 304 and one plant zone 305.

[0042] In actual use, only the reconstruction body 3 needs to be installed at the position required to be reconstructed. When the water in the drainage ditch body 1 flows from upstream to downstream, it flows through the reconstruction body 3, and the water in the drainage ditch body 1 passes through the filler area 304 and the plant area 305, is filtered and adsorbed by the filler in the filler area 304, and the pollutants such as nitrogen and phosphorus can be degraded in the plant area 305, so as to adjust the ecological environment in the drainage ditch body 1.

[0043] In the embodiment, the reconstruction body 3 comprises a peripheral frame 301, and the upper and lower ends of the peripheral frame 301 are open. A plurality of perforated flow-blocking water-permeable plates 302 are arranged in the peripheral frame 301. The perforated flow-blocking water-permeable plates 302 are provided with a plurality of first water-permeable holes 3021, and the water between the cavities on both sides of the perforated flow-blocking water-permeable plates 302 can flow through the first water-permeable holes 3021. Moreover, the perforated flow-blocking water-permeable plates 302 divide the inside of the peripheral frame 301 into at least one filler area 304 and at least one plant area 305, so that the water in the drainage ditch body 1 passes through at least one filler area 304 and one plant area 305 for purification each time it passes through one reconstruction body 3.

[0044] In the embodiment, the specific structure of the reconstruction body 3 is as shown in Figures 2-3 The peripheral frame 301 is a rectangular frame, a central flow-guiding stabilizing pipe 303 is fixed at the center of the peripheral frame 301, and four perforated flow-blocking water-permeable plates 302 are arranged. The first ends of the four perforated flow-blocking water-permeable plates 302 are fixed to the outer wall of the central flow-guiding stabilizing pipe 303, and the second ends of the four perforated flow-blocking water-permeable plates 302 are fixed to the four corners inside the peripheral frame 301. The peripheral frame 301, the perforated flow-blocking water-permeable plates 302, and the central flow-guiding stabilizing pipe 303 can be integrally formed, or they can be separately manufactured and then fixed together by welding or bolts.

[0045] The four perforated flow-blocking water-permeable plates 302 divide the inside of the peripheral frame 301 into two filler areas 304 and two plant areas 305. Of course, the person skilled in the art can also adjust the number and installation position of the perforated flow-blocking water-permeable plates 302 according to actual needs, so as to adjust the number and distribution position of the filler areas 304 and the plant areas 305 to meet the use requirements of different drainage ditch bodies 1.

[0046] In the embodiment, as shown in Figure 3 The two filler areas 304 are oppositely arranged, and the arrangement direction of the two filler areas 304 is the same as the water flow direction, that is, the connecting line between the two filler areas 304 is parallel to the length direction of the drainage ditch body 1. The two plant areas 305 are oppositely arranged, and the arrangement direction of the two plant areas 305 is perpendicular to the water flow direction, that is, the connecting line between the two plant areas 305 is perpendicular to the length direction of the drainage ditch body 1.

[0047] When the water flows from upstream to downstream, it first flows through the filler area 304 close to the upstream, then through the plant area 305 on both sides, and finally flows into the filler area 304 close to the downstream and flows out. The advantage of this arrangement is that the water flowing into the improved main body 3 must flow through the filler area 304 and the plant area 305.

[0048] In this embodiment, the second water-permeable holes 3031 are arranged on the two sides of the central flow-stabilizing pipe 303 adjacent to the plant area 305. Figures 4-6 As can be seen from the above, the central flow-stabilizing pipe 303 is provided with a plurality of second water-permeable holes 3031 on the two sides adjacent to the plant area 305, and the inside of the central flow-stabilizing pipe 303 is in communication with the plant area 305 on both sides through the second water-permeable holes 3031.

[0049] The purpose of arranging the second water-permeable holes 3031 is that when the water flows from upstream to downstream, it first flows through the filler area 304 close to the upstream, and then through the plant area 305 on both sides. At this time, the water flowing through the plant area 305 will be divided into two parts, one of which will directly flow into the filler area 304 close to the downstream and flow out from the filler area 304 close to the downstream. The other part will flow into the inside of the central flow-stabilizing pipe 303 through the second water-permeable holes 3031, thereby forming a variety of complex water flow patterns such as flow guiding and flow dividing, even if the water flow is in a turbulent state, thereby enhancing the purification effect.

[0050] In this embodiment, the length of one side of the peripheral frame 301 is 0.5-1.0 m, the height of the peripheral frame 301 is 0.3-0.5 m, and the material of the peripheral frame 301 can be plastic material, such as four PVC plates welded together or integrally injection molded. In addition, the peripheral frame 301 can also be other alloy materials, such as carbon steel. The wall thickness of the peripheral frame 301 is 5-6 mm, which mainly serves to support the stability of the overall device and connect with the soil at the bottom of the drainage ditch main body 1, thereby playing the role of protection and preventing collapse.

[0051] The four perforated flow-blocking water-permeable plates 302 divide the inner space of the peripheral frame 301 into two filler areas 304 and two plant areas 305, and are connected to the four corners and the central flow-stabilizing pipe 303 on both sides, which plays a role in flow blocking and flow guiding, and also plays a role in functional partitioning for plants and fillers. The height of the perforated flow-blocking water-permeable plate 302 is the same as that of the peripheral frame 301, and thus the height of the perforated flow-blocking water-permeable plate 302 is 0.3-0.5 m, the wall thickness of the perforated flow-blocking water-permeable plate 302 is 5-6 mm, and the material of the perforated flow-blocking water-permeable plate 302 is the same as that of the peripheral frame 301, and thus is not described again. It should be noted that the first perforated area is arranged upwardly at a position 0.1 m above the bottom of the perforated flow-blocking water-permeable plate 302, the first perforated area includes a plurality of layers of first hole groups distributed upwardly and downwardly, each layer of first hole groups includes a plurality of first water-permeable holes 3021 distributed at intervals, plays a role in water permeation, and the height of the first perforated area accounts for about 2 / 5 of the height of the perforated flow-blocking water-permeable plate 302. For example, when the height of the perforated flow-blocking water-permeable plate 302 is 0.5 m, the height of the first perforated area is 0.2 m, the diameter of the first water-permeable hole 3021 is 5 mm, and the hole spacing of the first water-permeable hole 3021 is determined according to the material, and the perforated flow-blocking water-permeable plate 302 is not easily broken.

[0052] The central flow-stabilizing pipe 303 forms secondary local water flow guiding, and the inner circular space forms another form of substrate habitat, the bottom end of which is flush with the bottom of the peripheral frame 301, and the top surface thereof has two conditions: one is that the top surface of the central flow-stabilizing pipe 303 is flush with the top surface of the peripheral frame 301, which is convenient for workers to stand on the top surface to carry articles; or the other is that the top surface of the central flow-stabilizing pipe 303 is higher than the top surface of the peripheral frame 301, and the distance between the top surface of the central flow-stabilizing pipe 303 and the top surface of the peripheral frame 301 is not more than 0.1 m, and in the embodiment, the top surface of the central flow-stabilizing pipe 303 is 0.1 m higher than the top surface of the peripheral frame 301. The central flow-stabilizing pipe 303 can be a UPVC pipe, or can be integrally formed with the same material as the perforated flow-blocking water-permeable plate 302. The inner diameter of the central flow-stabilizing pipe 303 is 1 / 4-1 / 3 of the length of one side of the peripheral frame 301, for example, when the length of one side of the peripheral frame is 1.0 m, the central flow-stabilizing pipe 303 can adopt a pipe material with an inner diameter of 300 mm. The pipe bottom of the central flow-stabilizing pipe 303 starts to arrange a second perforated area upwardly at a position 0.1 m upwardly, the height of the second perforated area accounts for 1 / 3 of the total height of the central flow-stabilizing pipe 303 (for example, when the total height of the central flow-stabilizing pipe 303 is 0.6 m, the height of the second perforated area is 0.2 m), the second perforated area includes a plurality of second hole groups distributed upwardly and downwardly, each second hole group includes a plurality of second water-permeable holes 3031 distributed at intervals, the diameter of the second water-permeable hole 3031 is 5 mm, and the hole spacing is determined according to the material, and the central flow-stabilizing pipe 303 is not easily broken.

[0053] In the embodiment, the filler in the filler area 304 includes one or more of gravel, zeolite, volcanic rock and glass pumice, and the particle size of the filler is 2-4 cm. When any two of them are combined in a certain proportion, the volume ratio is preferably 1:1. The paving height of the filler is about 1 / 2 of the height of the filler area 304. For example, if the height of the peripheral frame 301 is 0.5 m, the paving height of the filler is 0.25 m.

[0054] The aquatic plants in the plant area 305 are emergent plants, including but not limited to common evergreen iris.

[0055] In the embodiment, the upper surface of the filler area 304 can be used to plant aquatic plants. The emergent plants can be planted by soilless cultivation, mainly including evergreen iris and the like. 3-5 plants are planted in each filler area 304. If the water flow of the drainage ditch is fast, no emergent plants are planted on the filler.

[0056] Alternatively, when the filler area 304 is not planted with emergent plants, the upper surface of the filler can be covered with a geotextile mat 3041 to facilitate the cleaning of fallen leaves, straws and other garbage. Figure 7 As shown in the figure, the geotextile mat 3041 is cut into the planar shape of the filler area 304 (similar to a fan shape), so as to facilitate placement and installation.

[0057] The backfill soil layer is arranged in the plant area 305. When the plant area 305 is installed in the installation groove at the bottom of the drainage ditch main body 1, the device is installed below the normal ditch bottom, and part of the soil is backfilled according to the depth requirement. The height of the backfill soil layer is not more than 0.2 m. The emergent plants are mainly planted with evergreen iris and the like, and 3-5 plants are planted in each plant area 305.

[0058] In the embodiment, the drainage ditch main body 1 is an ecological ditch or a hard drainage ditch. The bottom and the two inclined slope protection slopes of the ecological ditch are planted with plants, and the bottom and the two inclined slope protection slopes of the hard drainage ditch are concrete structures. Whether it is an ecological ditch or a hard drainage ditch, the cross section of both can be a common inverted isosceles trapezoid. However, if the cross-sectional size of the drainage ditch main body 1 is small, such as the top width is about 1.0 m, and the bottom width is 0.3-0.4 m, since the bottom width is small, the cross section of the original drainage ditch main body 1 needs to be modified before installation, that is, the original ditch wall and bottom of the modified section are removed, the bottom is excavated according to the preset depth of the device, and the original trapezoidal cross section is changed into a vertical wall. Pay attention to the connection with the original channel. When the device is applied to the bottom of the ecological ditch, the bottom of the modified section needs to be excavated, and after installation is completed, the slope protection of the modified section is protected (i.e. laying grass planting grid and planting plants) to prevent collapse.

[0059] In the embodiment, the bottom of the drainage ditch body 1 is provided with a mounting groove, and the transformation body 3 is mounted in the mounting groove, so as to form a concave layout. The advantages of such a setting are: on the one hand, the concave layout can improve the water storage capacity of the drainage ditch body 1, and the change of the micro water flow condition, the configuration of the filler and the plant can also improve the purification capacity of the farmland non-point source pollutants; on the other hand, after the bottom of the drainage ditch body 1 is transformed in stages (generally, the drainage ditch body 1 will be provided with multiple transformation bodies 3 with a length of 3.0-5.0 m at intervals of 20-30 m), the multi-habitat system formed can improve the ecological service function of the drainage ditch body 1, and provide space for small animals such as frogs to inhabit and reproduce.

[0060] The drainage ditch body 1 is connected with a farmland drainage pipe 2, which is generally arranged on the upstream side of the transformation body 3 closest to the upstream, for guiding the water discharged from the farmland into the drainage ditch body 1 and sequentially through each transformation body 3 for purification.

[0061] The device for ecological environment reconstruction of farmland drainage ditch bottom provided in the embodiment can increase the water storage capacity of the drainage ditch body 1 during farmland drainage. When the water flow enters the transformation body 3, it first passes through the water-facing filler area 304, and after filtration, sedimentation and other effects, it preliminarily intercepts and purifies non-point source pollutants. Then it passes through the perforated flow-blocking water-permeable plate 302 for secondary water distribution. Part of the water flow directly enters the downstream filler area 304 through the plant area 305, and the other part enters the central flow-guiding stable pipe 303 from the plant area 305, and then is dispersed to the two plant areas 305, forming a variety of complex water flow states of flow guiding and splitting, and playing a secondary purification role. Finally, the water flow enters the downstream filler area 304 through the perforated flow-blocking water-permeable plate 302, and the non-point source pollutants are purified again. The water quantity of farmland drainage is affected by rainfall intensity and duration, and the water flow state distribution may be different, but overall, the device architecture, cavity, filler and plant can form local water flow states such as up-and-down flow, return flow and multi-layer flow, and play the purification functions of storage, sedimentation, filtration, degradation and absorption. When applied to a hard drainage ditch, the device can make up for the defect that the original drainage ditch has no pollutant purification capacity. When applied to an ecological ditch, the device can improve the ecological purification capacity of the ecological ditch. At the same time, the staged application of the device can generally ensure that the drainage ditch body 1 retains water when there is no farmland drainage in the local area, and provide habitat and breeding places for small animals such as frogs, and improve the ecological service functions such as biological diversity of the ditch.

[0062] The device for ecological environment reconstruction of farmland drainage ditch bottom provided by the application improves the retention and purification capacity of the drainage ditch body 1 without affecting the normal drainage of the drainage ditch body 1, can be used as a component part of farmland non-point source pollution treatment, effectively reduces the concentration of farmland drainage pollutants, and improves the ecological environment function of the ecological ditch or hard ditch, and the used material has no ecological risk, and the device has simple design, convenient installation, low cost, and low operation and maintenance cost.

[0063] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first", "second" and the like can be explicitly or implicitly included one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0064] In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0065] If the present application discloses or involves mutually fixed and connected parts or structural parts, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, connected by bolts or screws), or as: non-detachable fixed connection (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by integral structure (for example, manufactured by integral forming process) (except for obvious cases that cannot be used by integral forming process).

[0066] In addition, the terms used to represent the positional relationship or shape in any technical solution disclosed by the present application include states or shapes similar, similar or close to them unless otherwise stated.

[0067] Any component provided by the present application can be assembled from a plurality of individual components, or can be a single component manufactured by integral forming process.

[0068] It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are only used to illustrate the content disclosed in the present application, to enable those skilled in the art to understand and read, and are not used to limit the conditions for implementing the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0069] It should be noted that the same reference signs in the embodiments of the present application represent the same component or the same part.

[0070] Any adaptive change according to actual needs is within the protection scope of the present application.

[0071] The principles and implementation modes of the present application are described by applying specific examples in the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation mode and application scope. In summary, the content of the present application should not be understood as a limitation of the present application.

Claims

1. A device for reconstructing the ecological environment of the base of an agricultural field drainage ditch, characterized in that: The application relates to a drainage ditch reconstruction device, which comprises a reconstruction body (3) for being mounted to the ditch bottom of a drainage ditch body (1). The reconstruction body (3) is internally provided with at least one filler area (304) filled with fillers and at least one plant area (305) planted with aquatic plants. Water in the drainage ditch body (1) passes through the reconstruction body (3) and at least one filler area (304) and one plant area (305). The reconstruction body (3) comprises a peripheral frame (301) internally provided with a plurality of perforated flow-stopping water-permeable plates (302) provided with a plurality of first water-permeable holes (3021), and the perforated flow-stopping water-permeable plates (302) divide the interior of the peripheral frame (301) into at least one filler area (304) and at least one plant area (305). The peripheral frame (301) is a rectangular frame, a central flow-stabilizing pipe (303) is fixed to the center of the peripheral frame (301), four perforated flow-stopping water-permeable plates (302) are fixed to the outer wall of the central flow-stabilizing pipe (303) at the first ends of the four perforated flow-stopping water-permeable plates (302), and the second ends of the four perforated flow-stopping water-permeable plates (302) are fixed to the inner sides of the four corners of the peripheral frame (301). The four perforated flow-stopping water-permeable plates (302) divide the interior of the peripheral frame (301) into two filler areas (304) and two plant areas (305). The central flow-stabilizing pipe (303) is provided with a plurality of second water-permeable holes (3031) on the two sides of the central flow-stabilizing pipe (303), and the interior of the central flow-stabilizing pipe (303) is connected with the two plant areas (305) through the second water-permeable holes (3031).

2. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The two filler areas (304) are oppositely arranged, and the two plant areas (305) are oppositely arranged.

3. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The length of one side of the peripheral frame (301) is 0.5-1.0 m, the height of the peripheral frame (301) is 0.3-0.5 m, and the wall thickness of the peripheral frame (301) is 5-6 mm. The height of the perforated flow-stopping water-permeable plate (302) is 0.3-0.5 m, and the wall thickness of the perforated flow-stopping water-permeable plate (302) is 5-6 mm. The top surface of the central flow-stabilizing pipe (303) is flush with the top surface of the peripheral frame (301), or the top surface of the central flow-stabilizing pipe (303) is higher than the top surface of the peripheral frame (301), and the distance between the top surface of the central flow-stabilizing pipe (303) and the top surface of the peripheral frame (301) is not more than 0.1 m. The inner diameter of the central flow-stabilizing pipe (303) is 1 / 4-1 / 3 of the length of one side of the peripheral frame (301).

4. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The fillers in the filler area (304) comprise one or more of gravels, zeolites, volcanic rocks and glass pumice. The aquatic plants in the plant area (305) comprise irises.

5. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The upper surface of the filler area (304) is used for planting aquatic plants; or a geotextile mat (3041) is installed on the upper surface of the filler area (304); A backfill soil layer is arranged in the plant area (305).

6. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The drainage ditch main body (1) is an ecological ditch or a hard drainage ditch.

7. The device for reconstructing the ecological environment of the farmland ditch bottom according to claim 1, characterized in that: The bottom of the drainage ditch main body (1) is provided with a mounting groove, and the transformation main body (3) is mounted in the mounting groove. The drainage ditch main body (1) is connected with a farmland drainage pipe (2).

Images