Ecological salt elimination structure for saline-alkali soil

Abstract

The utility model discloses an ecological salt elimination structure for saline-alkali soil, which comprises a saline-alkali soil layer provided with blind ditches; the salt elimination assembly is arranged in the blind ditch, the salt elimination assembly comprises a salt elimination pipe, first fixing seats, second fixing seats and springs, the salt elimination pipe is provided with a plurality of first fixing seats, the first fixing seats are connected with one ends of the springs, the other ends of the springs are connected with the second fixing seats, and the second fixing seats are connected to the saline-alkali soil layer; the fine sand filling layer is filled in the blind ditch; the isolating layer is arranged above the fine sand filling layer; the planting layer is arranged above the isolation layer, and green plants are planted on the surface of the planting layer. Compared with the prior art, the saline-alkali soil drip washing device can solve the problems that in the drip washing process of saline-alkali soil, drip washing water can permeate into the ground and is not easy to discharge, salt in soil is prone to being eroded into planting soil along with capillary water, and plants are damaged.

Description

Technical Field

[0001] This utility model relates to the field of saline-alkali land desalination technology, and in particular to an ecological desalination structure for saline-alkali soil. Background Technology

[0002] Saline-alkali soil is a type of degraded soil. Due to the high groundwater level in coastal wetlands, the coastal groundwater contains a large amount of soluble salts, which move with the rising water flow and evaporation, and accumulate on the topsoil, forming typical coastal saline-alkali land. The high salt content and strong alkalization of coastal saline-alkali land lead to serious degradation of soil structure and performance and toxicity to plants.

[0003] Traditional methods for improving saline-alkali land typically involve leaching, which uses large amounts of water to irrigate the soil, dissolving some of the soluble salts. This water is then drained away, effectively removing the soluble salts from the soil. However, during leaching, the water seeps into the ground and is difficult to drain. Salts in the soil are easily carried by capillary action into the planting soil (a phenomenon known as "efflorescence"), damaging plants and even causing their death. Therefore, this single method cannot fundamentally solve the problem of soil salinization. Utility Model Content

[0004] The purpose of this utility model is to provide an ecological salt drainage structure for saline-alkali soil in order to solve the problem that the leaching water will seep into the ground and is not easy to drain during the leaching process of saline-alkali land.

[0005] To achieve the above objectives, this utility model provides an ecological salt drainage structure for saline-alkali soil, comprising:

[0006] Saline-alkali strata, on which underground trenches are constructed;

[0007] A salt drainage assembly is installed in the underground ditch. The salt drainage assembly includes a salt drainage pipe, a first fixing seat, a second fixing seat, and a spring. A plurality of first fixing seats are provided on the salt drainage pipe. One end of the spring is connected to the first fixing seat, and the other end of the spring is connected to the second fixing seat. The second fixing seat is connected to the saline-alkali stratum.

[0008] A fine sand filling layer is filled into the dark trench;

[0009] An isolation layer is disposed above the fine sand filling layer;

[0010] A planting layer is disposed above the isolation layer, and the surface of the planting layer is planted with green plants.

[0011] As a further description of the above technical solution:

[0012] The salt discharge pipe is provided with several through holes, and a filter screen is installed in each of the through holes.

[0013] As a further description of the above technical solution:

[0014] One end of the salt discharge pipe is connected to the salt collection well.

[0015] As a further description of the above technical solution:

[0016] The isolation layer is a gravel isolation layer.

[0017] As a further description of the above technical solution:

[0018] A waterproof fabric layer is provided between the isolation layer and the planting layer.

[0019] As a further description of the above technical solution:

[0020] The waterproof fabric layer is a polymer waterproof fabric layer.

[0021] As a further description of the above technical solution:

[0022] Several reinforcing rods are provided between adjacent salt discharge pipes. One end of each reinforcing rod is connected to the first fixed base, and the other end of each reinforcing rod is connected to the first fixed base of the adjacent salt discharge pipe.

[0023] As a further description of the above technical solution:

[0024] The reinforcing rod is a screw rod, and the first fixing seat is provided with a screw hole that matches the screw rod.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0026] 1. In this utility model, by installing a salt drainage pipe in the saline-alkali stratum, it is convenient to drain the infiltrated leaching water and the infiltrated water containing dissolved salt in a timely manner. At the same time, when the groundwater rises, it can also be drained in a timely manner to prevent the salt in the soil from being easily eroded into the planting soil by capillary water and causing damage to the plants. By installing multiple first fixing seats on the salt drainage pipe and axially arranging the multiple first fixing seats on the salt drainage pipe, the support strength of the salt drainage pipe can be improved. The first fixing seats are connected to the second fixing seats through springs, and the second fixing seats are fixedly connected to the saline-alkali stratum. In this way, the force spring of the salt drainage pipe can play a buffering role and reduce the deformation of the salt drainage pipe.

[0027] 2. In this utility model, filling the ditch with fine sand facilitates the movement of the spring and the permeation of water, allowing salt water to penetrate into the drain pipe and be discharged through it, thus improving the salt discharge efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an ecological salt drainage structure for saline-alkali soil.

[0030] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 This is a schematic diagram of the salt drainage pipe in an ecological salt drainage structure for saline-alkali soil, according to another implementation method.

[0032] Figure 4 This is a three-dimensional view of a salt drainage pipe in an ecological salt drainage structure for saline-alkali soil, according to another implementation method.

[0033] Legend:

[0034] 1. Saline-alkali stratum; 2. Underground ditch; 3. Salt drainage component; 31. Salt drainage pipe; 32. First fixing seat; 33. Second fixing seat; 34. Spring; 4. Fine sand filling layer; 5. Isolation layer; 6. Planting layer; 7. Green plants; 8. Through hole; 9. Salt collection well; 10. Waterproof cloth layer; 11. Reinforcing rod. Detailed Implementation

[0035] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Please see Figure 1-4 This utility model provides an ecological salt drainage structure for saline-alkali soil, comprising:

[0041] Saline-alkali stratum 1, with a hidden ditch 2 provided on the saline-alkali stratum 1;

[0042] A salt drainage component 3 is disposed in the underground ditch 2. The salt drainage component 3 includes a salt drainage pipe 31, a first fixing seat 32, a second fixing seat 33, and a spring 34. A plurality of first fixing seats 32 are disposed on the salt drainage pipe 31. One end of the spring 34 is connected to the first fixing seat 32, and the other end of the spring 34 is connected to the second fixing seat 33. The second fixing seat 33 is connected to the saline-alkali stratum 1.

[0043] Fine sand filling layer 4, which fills the dark trench 2;

[0044] Isolation layer 5, which is disposed above the fine sand filling layer 4;

[0045] Planting layer 6 is disposed above the isolation layer 5, and green plants 7 are planted on the surface of the planting layer 6.

[0046] The salt discharge pipe 31 is provided with several through holes 8, and a filter screen is installed in each through hole 8. The multiple through holes facilitate the entry of brine into the salt discharge pipe; the filter screen can prevent the through holes from becoming clogged.

[0047] One end of the salt discharge pipe 31 is connected to the salt collection well 9. The brine is discharged into the salt collection well through the salt discharge pipe, which has a good collection effect on the brine reverse osmosis and improves the desalination effect. A water pump and water pipe are installed in the salt collection well (not shown in the figure). This is a conventional structure. The water pump provides power and pumps the brine collected in the salt collection well to the outside through the water pipe for centralized treatment.

[0048] The isolation layer 5 is a gravel isolation layer. It serves as an isolation layer to reduce the upward return of salt from saline-alkali strata.

[0049] A waterproof fabric layer 10 is disposed between the isolation layer 5 and the planting layer 6. The waterproof fabric layer 10 is a polymer waterproof fabric layer. Polymer waterproof fabric has excellent waterproof performance and corrosion resistance, as well as a certain strength, good wear resistance, and is not easily worn. The waterproof fabric layer, placed between the isolation layer 5 and the planting layer, has a good effect of isolating saline and alkaline water, and it itself has good corrosion resistance. In addition, other waterproof fabrics, such as nylon waterproof fabric, can also be used.

[0050] Several reinforcing rods 11 are provided between adjacent salt drainage pipes 31. One end of each reinforcing rod 11 is connected to the first fixing seat 32, and the other end is connected to the first fixing seat 32 of the adjacent salt drainage pipe 31. The reinforcing rod 11 is a threaded rod, and the first fixing seat 32 has a threaded hole matching the threaded rod. The reinforcing rod and the first fixing seat are connected by threads, thus fixing adjacent salt drainage pipes. This allows multiple salt drainage pipes at the same level to be interconnected, improving the stability of the salt drainage pipe position and reducing the possibility of subsidence due to changes in soil layers. Similarly, the second fixing seats are fixed in the same way as the first fixing seats.

[0051] Working Principle: By installing a drainage pipe within the saline-alkali soil layer, the seepage leaching water and dissolved salt water can be easily discharged. Simultaneously, when groundwater levels rise, the pipe can also be drained promptly, preventing soil salts from easily eroding into the planting soil via capillary water and damaging plants. Multiple first-fixed seats are installed on the drainage pipe, arranged axially to increase its support strength. The first-fixed seats are connected to second-fixed seats via springs, and the second-fixed seats are fixed to the saline-alkali soil layer. This spring action acts as a buffer, reducing the deformation of the drainage pipe. Filling the culvert with fine sand facilitates spring movement and water infiltration, allowing brine to permeate into the drainage pipe and be discharged, thus improving drainage efficiency.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ecological salt-removal structure for saline-alkali soil, characterized in that, include: Saline-alkali strata, on which underground trenches are constructed; A salt drainage assembly is installed in the underground ditch. The salt drainage assembly includes a salt drainage pipe, a first fixing seat, a second fixing seat, and a spring. A plurality of first fixing seats are provided on the salt drainage pipe. One end of the spring is connected to the first fixing seat, and the other end of the spring is connected to the second fixing seat. The second fixing seat is connected to the saline-alkali stratum. A fine sand filling layer is filled into the dark trench; An isolation layer is disposed above the fine sand filling layer; A planting layer is disposed above the isolation layer, and the surface of the planting layer is planted with green plants.

2. The ecological salt drainage structure for saline-alkali soil according to claim 1, characterized in that, The salt discharge pipe is provided with several through holes, and a filter screen is installed in each of the through holes.

3. The ecological salt drainage structure for saline-alkali soil according to claim 1, characterized in that, One end of the salt discharge pipe is connected to the salt collection well.

4. The ecological salt drainage structure for saline-alkali soil according to claim 1, characterized in that, The isolation layer is a gravel isolation layer.

5. The ecological salt drainage structure for saline-alkali soil according to claim 1, characterized in that, A waterproof fabric layer is provided between the isolation layer and the planting layer.

6. The ecological salt drainage structure for saline-alkali soil according to claim 5, characterized in that, The waterproof fabric layer is a polymer waterproof fabric layer.

7. The ecological salt drainage structure for saline-alkali soil according to claim 1, characterized in that, Several reinforcing rods are provided between adjacent salt discharge pipes. One end of each reinforcing rod is connected to the first fixed base, and the other end of each reinforcing rod is connected to the first fixed base of the adjacent salt discharge pipe.

8. The ecological salt drainage structure for saline-alkali soil according to claim 7, characterized in that, The reinforcing rod is a screw rod, and the first fixing seat is provided with a screw hole that matches the screw rod.

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