Underground pipe salt discharging system for saline-alkali soil improvement
By designing a salt discharge system including drainage pipes, salt drainage channels and mesh distributed concealed pipes, the problem of saline-alkali water entering the tillage layer again is solved, and the effective reduction of soil saline-alkali pollution and the promotion of crop growth are achieved.
Patent Information
- Application Number
- CN202421457460.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-24
AI Technical Summary
In the prior art, saline and alkali will enter the surface tillage soil again as the groundwater level rises, resulting in repeated occurrence of soil saline and alkaline phenomena, affecting crop planting.
A concealed pipe salt discharge system was designed, including a tillage layer, a salt discharge channel, a drainage pipe, a geotextile, a mixed gravel isolation layer, a fine sand support layer and a mesh distributed concealed pipe and a salt discharge pipe. The raised groundwater is discharged into the salt drain through the drainage pipe to prevent the groundwater carrying saline and alkali from rising to the tillage layer, and structures such as geotextiles and mixed gravel isolation layers should be used to prevent the saline and alkali water from contaminating the tillage layer again.
It effectively prevents saline-alkali water from entering the tillage layer again, reduces soil saline-alkali pollution, improves the effect of soil improvement, and promotes the healthy growth of crops.
Smart Images
Figure CN222827644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of land preparation, in particular to a concealed pipe salt discharge system for improving saline-alkali land. Background Art
[0002] Soil salt damage can also be called soil salinization, which is the process in which the salt in the deep soil water rises to the surface with the capillary water, and the salt accumulates in the surface soil after the water evaporates.
[0003] In order to solve the problem of soil salt damage, many soil improvement methods adopt the method of laying underground pipes. The most common method of salt drainage is to lay simple single-layer underground pipes in saline-alkali land. However, when rainfall and irrigation cause the groundwater level to rise, the underground saline water will bring salt and alkali into the surface cultivated layer of soil again due to evaporation, resulting in repeated occurrence of soil salinity and affecting crop planting. Utility Model Content
[0004] The utility model provides a concealed pipe salt discharge system for improving saline-alkali land, so as to solve the technical problem in the prior art that saline-alkali will enter the surface cultivation layer soil again as the groundwater level rises.
[0005] In order to solve the above problems, the utility model provides a concealed pipe salt discharge system for improving saline-alkali land, which adopts the following technical solutions:
[0006] A concealed pipe salt drainage system for improving saline-alkali land comprises a farming layer, a salt drainage channel arranged beside the farming layer, and a salt drainage layer pre-buried under the farming layer to drain the saline-alkali water in the farming layer to the salt drainage channel. A drainage pipe is pre-buried under the salt drainage layer, and a plurality of water holes are arranged on the drainage pipe. The end of the drainage pipe is connected to the salt drainage channel, and the water holes are used to guide the groundwater after the water level is raised into the salt drainage channel.
[0007] The beneficial effect is that when the underground pipe salt drainage system for saline-alkali land improvement of the utility model is in use, when the groundwater level rises, the rising groundwater enters the drainage pipe and enters the salt drainage channel through the drainage pipe. When the underground pipe salt drainage system for saline-alkali land improvement of the utility model is in use, the rising groundwater is discharged into the salt drainage channel through the drainage pipe, thereby preventing the groundwater carrying salt and alkali from rising to the tillage layer, and further preventing the salt and alkali from entering the soil of the tillage layer to pollute the tillage layer.
[0008] Furthermore, a geotextile is provided between the tillage layer and the salt-draining layer.
[0009] Beneficial effects: Geotextile has good water-permeable isolation effect, and can intercept soil particles in the cultivated layer, while also playing a certain role in filtering large particle impurities in saline-alkali water.
[0010] Furthermore, a mixed crushed stone isolation layer is provided between the geotextile and the salt drainage layer.
[0011] Beneficial effects: It can effectively block the capillary action of the soil and prevent the saline-alkali water that has been leached and infiltrated from re-accumulating in the tillage layer due to the capillary action of the tillage layer soil.
[0012] Furthermore, a fine sand support layer is provided below the mixed crushed stone isolation layer, and the salt removal layer is provided in the fine sand support layer.
[0013] Beneficial effects: It supports the salt drainage layer and can promote the infiltration of saline-alkali water.
[0014] Furthermore, the salt discharge layer includes a plurality of concealed pipes and a plurality of salt discharge pipes, each concealed pipe and each salt discharge pipe is distributed in a network, and each salt discharge pipe is connected to the salt discharge channel.
[0015] Beneficial effect: The salt discharge pipe promotes water absorption in the blind pipe and avoids blockage of the blind pipe.
[0016] The concealed pipes are arranged in parallel and at intervals, the salt discharge pipes are arranged vertically to the concealed pipes, and the salt discharge pipes are connected to the concealed pipes.
[0017] Beneficial effects: It has a wide coverage area and improves the efficiency of discharging saline-alkali water from the soil.
[0018] Furthermore, the inner wall of the salt drainage channel is provided with a hard anti-collapse slope.
[0019] Beneficial effects: Increase the service life of salt drainage channels and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0021] Figure 1 This is a schematic structural diagram of a concealed pipe salt discharge system for improving saline-alkali land according to the utility model;
[0022] Figure 2 The utility model is a schematic diagram of a mechanism of a salt discharge layer of a concealed pipe salt discharge system for improving saline-alkali land.
[0023] Description of reference numerals:
[0024] 1. Cultivated layer; 2. Salt drainage channel; 3. Drainage pipe; 4. Geotextile; 5. Mixed gravel isolation layer; 6. Fine sand support layer; 7. Concealed pipe; 8. Salt drainage pipe; 9. Hard anti-collapse slope. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0026] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.
[0027] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.
[0028] Embodiment 1 of a concealed pipe salt discharge system for improving saline-alkali land provided by the utility model:
[0029] like Figure 1 and Figure 2 As shown, a concealed pipe salt drainage system for improving saline-alkali land of the utility model comprises a tillage layer 1, a salt drainage channel 2, a mixed crushed stone isolation layer 5, a fine sand support layer 6, a salt drainage layer arranged in the fine sand support layer 6, and a drainage pipe 3.
[0030] The salt drainage channel 2 is arranged beside the cultivated layer 1 , and is an inverted equilateral trapezoidal structure. The inner wall of the salt drainage channel 2 is provided with a hard anti-collapse slope 9 .
[0031] A geotextile 4 is provided below the cultivation layer 1 .
[0032] The mixed crushed stone isolation layer 5 is arranged below the geotextile 4 .
[0033] The fine sand support layer 6 is arranged below the mixed crushed stone isolation layer 5 .
[0034] The salt discharge layer is arranged in the fine sand support layer 6, and the salt discharge layer includes multiple concealed pipes 7 and multiple salt discharge pipes 8. The concealed pipes 7 are arranged in parallel and at intervals, and the salt discharge pipes 8 are arranged vertically with each concealed pipe 7, and each salt discharge pipe 8 is connected with each concealed pipe 7. The concealed pipes 7 and the salt discharge pipes 8 are distributed in a network shape, and each salt discharge pipe 8 is connected with the salt discharge channel 2.
[0035] In this embodiment, the size of the salt discharge pipe 8 is larger than that of the blind pipe 7 .
[0036] The drainage pipe 3 is pre-buried below the salt drainage layer. A plurality of water holes are provided on the drainage pipe 3 , and the end of the drainage pipe 3 is connected to the salt drainage channel 2 . The water holes are used to guide the groundwater after the water level is raised into the salt drainage channel 2 .
[0037] In this embodiment, the drainage pipe 3 , the concealed pipe 7 and the salt-discharging pipe 8 are wrapped with geotextiles to prevent particles in the soil from entering and clogging the drainage pipe 3 , the concealed pipe 7 or the salt-discharging pipe 8 .
[0038] When the underground water level rises during use of the salt drainage system of the utility model for improving saline-alkali land, the rising underground water enters the drainage pipe 3 and enters the salt drainage channel 2 through the drainage pipe 3 .
[0039] The utility model discloses a concealed pipe salt drainage system for improving saline-alkali land, when in use, discharges the rising groundwater into the salt drainage channel through the drainage pipe, thereby preventing the groundwater carrying salt and alkali from rising to the farming layer, and further preventing the salt and alkali from entering the soil of the farming layer and polluting the farming layer.
[0040] Embodiment 2 of a concealed pipe salt discharge system for improving saline-alkali land provided by the utility model:
[0041] The main difference between it and Example 1 is that in Example 1, a geotextile is provided between the tillage layer and the salt-draining layer.
[0042] In this embodiment, no geotextile is arranged between the tillage layer and the salt-draining layer. In this case, permeable concrete or geonet is arranged between the tillage layer and the salt-draining layer.
[0043] Embodiment 3 of a concealed pipe salt discharge system for improving saline-alkali land provided by the utility model:
[0044] The main difference between it and Example 1 is that in Example 1, a mixed crushed stone isolation layer is provided between the geotextile and the salt-draining layer.
[0045] In this embodiment, no mixed crushed stone isolation layer is provided between the geotextile and the salt-draining layer.
[0046] Embodiment 4 of a concealed pipe salt discharge system for improving saline-alkali land provided by the utility model:
[0047] The main difference between it and Example 1 is that in Example 1, a fine sand support layer is provided below the mixed crushed stone isolation layer.
[0048] In this embodiment, no fine sand support layer is provided below the mixed crushed stone isolation layer.
[0049] Embodiment 5 of a concealed pipe salt discharge system for improving saline-alkali land provided by the utility model:
[0050] The main difference between it and Example 1 is that in Example 1, a hard anti-collapse slope is provided on the inner wall of the salt drainage channel.
[0051] In this embodiment, no hard anti-collapse slope is provided on the inner wall of the salt drainage channel.
[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
[0053] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.
Claims
1. A salt drainage system for saline-alkali land improvement, comprising a cultivation layer, a salt drainage channel arranged beside the cultivation layer, and a salt drainage layer pre-buried under the cultivation layer to drain the saline-alkali water in the cultivation layer to the salt drainage channel, characterized in that: A drainage pipe is pre-buried below the salt drainage layer. The drainage pipe is provided with a plurality of water holes, and the end of the drainage pipe is connected to the salt drainage channel. The water holes are used to guide the groundwater after the water level is raised into the salt drainage channel.
2. A concealed pipe salt discharge system for saline-alkali land improvement according to claim 1, characterized in that: Geotextile is provided between the tillage layer and the salt drainage layer.
3. A concealed pipe salt drainage system for saline-alkali land improvement according to claim 2, characterized in that: A mixed crushed stone isolation layer is provided between the geotextile and the salt drainage layer.
4. A concealed pipe salt drainage system for saline-alkali land improvement according to claim 3, characterized in that: A fine sand support layer is arranged below the mixed crushed stone isolation layer, and the salt discharge layer is arranged in the fine sand support layer.
5. The concealed pipe salt drainage system for saline-alkali land improvement according to claim 4 is characterized in that: The salt discharge layer includes multiple concealed pipes and multiple salt discharge pipes. The concealed pipes and the salt discharge pipes are distributed in a network, and each salt discharge pipe is connected to the salt discharge channel.
6. A concealed pipe salt drainage system for saline-alkali land improvement according to claim 5, characterized in that: The concealed pipes are arranged in parallel and at intervals, the salt discharge pipes are arranged vertically to the concealed pipes, and the salt discharge pipes are connected to the concealed pipes.
7. A concealed pipe salt drainage system for saline-alkali land improvement according to any one of claims 1 to 6, characterized in that: The inner wall of the salt drainage channel is equipped with a hard anti-collapse slope.