Saline-alkali soil vegetation restoration structure
By designing the saline-alkali land vegetation restoration structure of the ring ditch, soil ridge, blind pipe and rainwater irrigation mechanism, the problem of salt content increases when the rainfall is high is solved, and effective reduction of salt and improvement of vegetation restoration effect is achieved.
Patent Information
- Application Number
- CN202421645059.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-12
AI Technical Summary
When the rainfall of existing saline-alkali land vegetation restoration structures rise, the liquid level of the water collection well increases, causing the salt to rise to the top again, affecting vegetation growth.
A saline-alkali land vegetation restoration structure is designed, including ring grooves, soil ridges, drainage tanks, longitudinal and transverse blind pipes, water collection wells and rainwater irrigation mechanisms. By setting up a liquid level control device and a rainwater irrigation mechanism, the liquid level and salt concentration of the water collection well are automatically controlled to prevent the increase of salt, and the salt content is reduced through rainwater irrigation.
It effectively avoids the rise of salt into the vegetation root soil, reduces the salt content, improves the vegetation restoration effect, and improves the stability and efficiency of saline-alkali land restoration structure.
Smart Images
Figure CN222928795U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vegetation restoration, in particular to a vegetation restoration structure for saline-alkali land. Background Art
[0002] Saline-alkali land refers to land with excessive soluble salts in the soil, and these salts mainly include sulfates, chlorides, carbonates, and bicarbonates. When the accumulation of soluble salts in the soil reaches a level harmful to crop growth, this land is called saline-alkali land. Vegetation in saline-alkali land is usually short, dry and hard, with underdeveloped leaves, a thick outer skin on the epidermis, and often grayish-white fluff. These characteristics help plants reduce water evaporation and loss, and improve their survival ability in saline-alkali environments. Generally, a vegetation restoration structure for saline-alkali land has a structure for reducing the salt content in the saline-alkali land. By irrigating fresh water, the salts in the saline-alkali land dissolve in the fresh water and are discharged through drain pipes laid at the bottom. It not only isolates the surrounding saline-alkali land but also prevents the rise of underground salts, which may affect plant growth or even cause plant death. In the prior art, the vegetation restoration structure for saline-alkali land has the following problems: A sump is used to collect the salt-washed brine. When the rainfall is large, the liquid level in the sump will rise or even fill up and overflow, causing the salts at the bottom of the saline-alkali land to rise back to the top with the rising water level, thereby increasing the salt content in the soil of the vegetation roots and affecting vegetation growth. Content of the Utility Model
[0003] In view of this, the utility model provides a vegetation restoration structure for saline-alkali land to solve the problems described above.
[0004] The technical solution of the utility model is realized as follows:
[0005] A vegetation restoration structure for saline-alkali land includes a ring ditch dug around. The area surrounded by the ring ditch is the saline-alkali land. There are earth dikes built around the saline-alkali land. A drainage groove is provided at the top of the earth dike, and the bottom of the drainage groove is higher than the surface of the saline-alkali land. The uppermost layer of the saline-alkali land is a restoration layer. A longitudinal blind pipe and a transverse blind pipe are buried at the bottom of the restoration layer. The longitudinal blind pipes are arranged in parallel with each other. One end of multiple longitudinal blind pipes is connected to the transverse blind pipe. The transverse blind pipe is connected to a sump through a collecting pipe. One end of the collecting pipe is located at the bottom of the sump. The sump is located outside the ring ditch. A manhole cover is provided at the top of the sump. A support plate is fixedly provided on the side wall of the sump. A lifting rod is slidably arranged on the support plate. A floating block is provided at the bottom of the lifting rod, and its top passes through the manhole cover and extends outside. A contact plate is provided on the side of the lifting rod. A travel switch is provided above the contact plate, and the travel switch is arranged on the bottom surface of the manhole cover. A first water pump is provided on one side of the sump. The first water pump is connected to a first suction pipe. One end of the first suction pipe extends to the bottom of the sump. The water outlet of the first water pump is connected to a drain pipe.
[0006] Preferably, the longitudinal blind pipe is inclined, and the catch basin is located on the lower side of the longitudinal blind pipe.
[0007] Preferably, a plastic film is laid at the bottom of the repair layer, and the longitudinal blind pipe is located on top of the plastic film.
[0008] Preferably, waterproof membranes are laid on both sides and at the bottom of the annular trench.
[0009] Preferably, scale lines are provided on the upper side surface of the lifting rod.
[0010] Preferably, it further includes a rainwater irrigation mechanism, which includes a second water suction pipe, a second water pump, a main water pipe, a sub-water pipe and a nozzle. The second water pump is arranged on the top of the earth ridge. One end of the second water suction pipe is arranged at the bottom of the annular trench, and the other end is connected to the second water pump. One end of the main water pipe is connected to the water outlet of the second water pump, and the other end extends and spans the entire saline-alkali land. A plurality of the sub-water pipes are horizontally arranged and are connected to the main water pipe in the middle. A plurality of spray nozzles are arranged at the bottom of the sub-water pipe.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] 1. A liquid level control device is arranged in the catch basin. When encountering large precipitation, the water pump is automatically started to drain the water in the catch basin, avoiding the water level in the catch basin from being too high, which may cause the underground salt to re-pollute the repair layer through the rising water level and increase the salt content in the repair layer.
[0013] 2. An annular trench is provided. The annular trench can not only isolate the saline-alkali land from the surrounding area, but also collect and store rainwater, and use the rainwater to irrigate the repair layer of the saline-alkali land to achieve the effect of further reducing the salt content. The saline-alkali land is provided with an earth ridge, which can enclose the rainwater on the saline-alkali land. A drainage outlet is arranged on one side of the earth ridge. When encountering large precipitation, the rainwater flows into the catch basin through the buried underground pipe, and the excess rainwater flows into the annular trench through the drainage outlet, which not only stores the rainwater but also reduces the amount of water flowing into the catch basin.
[0014] 3. A rainwater irrigation mechanism is provided. The rainwater in the rectangular annular trench is used to irrigate the vegetation on the saline-alkali land, dissolve the salt in the repair layer of the saline-alkali land and flow into the catch basin through the longitudinal blind pipe and the transverse blind pipe buried underground and the collecting pipe, thereby improving the repair effect of the saline-alkali land repair structure. Description of the Drawings
[0015] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0016] Figure 1 Schematic perspective view of a saline-alkali land vegetation restoration structure of the present utility model;
[0017] Figure 2 Schematic top view of a saline-alkali land vegetation restoration structure of the present utility model;
[0018] Figure 3 is Figure 2 Enlarged view at A-A in
[0019] Figure 4 is Figure 2 Enlarged view at B-B in
[0020] Reference numerals: 1, annular groove; 2, saline-alkali land; 3, vegetation; 4, earth ridge; 5, drainage trough; 6, restoration layer; 7, longitudinal blind pipe; 8, transverse blind pipe; 9, collecting pipe; 10, collecting well; 11, manhole cover; 12, lifting rod; 13, support plate; 14, floating block; 15, contact plate; 16, travel switch; 17, first water pump; 18, first water suction pipe; 19, drain pipe; 20, second water suction pipe; 21, second water pump; 22, main water pipe; 23, auxiliary water pipe; 24, spray nozzle; 25, waterproof membrane; 26, plastic film. Specific embodiments
[0021] To better understand the technical content of the present utility model, a specific embodiment is provided below, and the present utility model will be further described in conjunction with the drawings.
[0022] See Figures 1 to 4, a vegetation restoration structure for saline-alkali land provided by the utility model includes a surrounding trench 1 dug around. The area surrounded by the trench 1 is the saline-alkali land 2. The function of the trench 1 is to isolate the saline-alkali land 2 from the surrounding environment. There is an earth embankment 4 built around the saline-alkali land 2. A drainage groove 5 is provided at the top of the earth embankment 4. The bottom of the drainage groove 5 is higher than the surface of the saline-alkali land 2. The uppermost layer of the saline-alkali land 2 is a restoration layer 6. A longitudinal blind pipe 7 and a transverse blind pipe 8 are buried at the bottom of the restoration layer 6. The longitudinal blind pipes 7 are arranged in parallel with each other. One end of each of the multiple longitudinal blind pipes 7 is connected to the transverse blind pipe 8. The transverse blind pipe 8 is connected to a water collection well 10 through a water collection pipe 9. One end of the water collection pipe 9 is located at the bottom of the water collection well 10. The water collection well 10 is located outside the trench 1. A manhole cover 11 is provided at the top of the water collection well 10. A support plate 13 is fixedly provided on the side wall of the water collection well 10. A lifting rod 12 is slidably arranged on the support plate 13. A floating block 14 is provided at the bottom of the lifting rod 12. Its top passes through the manhole cover 11 and extends outside. A contact plate 15 is provided on the side of the lifting rod 12. A travel switch 16 is provided above the contact plate 15. The travel switch 16 is arranged on the bottom surface of the manhole cover 11. A first water pump 17 is provided on one side of the water collection well 10. The first water pump 17 is connected to a first water suction pipe 18. One end of the first water suction pipe 18 extends to the bottom of the water collection well 10. The water outlet of the first water pump 17 is connected to a drain pipe 19.
[0023] When it rains, the earth embankment 4 can enclose the rainwater on the surface of the saline-alkali land 2. The rainwater is fresh water, and the rainwater will seep into the soil of the restoration layer 6, dissolving the salt in the restoration layer 6. The saline water formed after the salt is dissolved in the water will flow into the transverse blind pipe 8 through the longitudinal blind pipe 7 at the bottom of the restoration layer 6, and then flow into the water collection well 10 through the water collection pipe 9. As the saline water continuously enters, the liquid level of the saline water in the water collection well 10 will rise, thereby driving the floating block 14 to float upward. The upward floating of the floating block 14 drives the lifting rod 12 to rise. The rising of the lifting rod 12 drives the contact plate 15 to rise. When the liquid level in the water collection well 10 rises to a predetermined height, the top surface of the contact plate 15 abuts against the travel switch 16. The travel switch 16 combines with the circuit to start the first water pump 17. The first water pump 17 pumps out the saline water in the water collection well 10 through the first water suction pipe 18 and discharges it through the drain pipe 19, thereby automatically controlling the liquid level height of the saline water in the water collection well 10 and preventing the salt at the bottom of the restoration layer 6 of the saline-alkali land 2 from rising back to the soil of the restoration layer 6 as the water level rises, so as to prevent the salt content in the soil of the roots of the vegetation 3 from increasing and affecting the restoration effect of the vegetation 3.
[0024] When the precipitation is too large, the water level enclosed by the earth embankment 4 will be higher than the bottom of the drainage groove 5, so the rainwater will flow out from the drainage groove 5 and flow into the surrounding trench 1. The trench 1 not only plays a role in isolating the saline-alkali land 2 from the surrounding environment but also can store the excess rainwater.
[0025] Preferably, the longitudinal blind pipe 7 is inclined, and the sump 10 is located on the lower side of the longitudinal blind pipe 7.
[0026] When fresh water seeps down from the repair layer 6, it will flow into the longitudinal blind pipe 7. The longitudinal blind pipe 7 is inclined, which is conducive to the smooth downward flow of saline-alkali water into the sump 10.
[0027] Preferably, a plastic film 26 is laid at the bottom of the repair layer 6, and the longitudinal blind pipe 7 is located on top of the plastic film 26.
[0028] When the surface temperature of the saline-alkali land 2 is relatively high and the underground soil temperature of the repair layer 6 is relatively low, the water will have a rising effect. The water will move upward through the gaps in the soil from bottom to top, and will also bring the salts below the repair layer 6 into the repair layer 6 together. A plastic film 26 is laid at the bottom of the repair layer 6, which can isolate the groundwater and prevent the upward movement of the salt water.
[0029] Preferably, waterproof membranes 25 are laid on both sides and the bottom of the ring ditch 1.
[0030] Waterproof membranes 25 are laid on both sides and the bottom of the ring ditch 1, and its function is to prevent rainwater leakage and improve the water storage effect.
[0031] Preferably, scale lines are provided on the upper side surface of the lifting rod 12.
[0032] As the saline-alkali water continuously enters, the liquid level of the saline-alkali water in the sump 10 will rise, thereby driving the floating block 14 to float upward. The upward floating of the floating block 14 drives the lifting rod 12 to rise, and the rising of the lifting rod 12 drives the contact plate 15 to rise. Through the relative position between the scale lines on the side surface of the lifting rod 12 and the manhole cover 11, the liquid level height in the sump 10 can be intuitively obtained, which is conducive to controlling the watering amount of the vegetation in the saline-alkali land.
[0033] Preferably, it further includes a rainwater irrigation mechanism. The rainwater irrigation mechanism includes a second water suction pipe 20, a second water pump 21, a main water pipe 22, a sub-water pipe 23 and a nozzle. The second water pump 21 is arranged on the top of the earth ridge 4. One end of the second water suction pipe 20 is arranged at the bottom of the ring ditch 1, and the other end is connected to the second water pump 21. One end of the main water pipe 22 is connected to the water outlet of the second water pump 21, and the other end extends and spans the entire saline-alkali land 2. A plurality of the sub-water pipes 23 are horizontally arranged and the middle parts of them are all connected to the main water pipe 22. A plurality of spray nozzles 24 are arranged at the bottom of the sub-water pipe 23.
[0034] When the vegetation on the saline-alkali land needs to be watered, the second water pump is started. The second water pump pumps out the water in the annular ditch through the second water suction pipe and flows into multiple auxiliary water pipes through the main water pipe, and finally sprays out from the water spray nozzle to water the vegetation on the saline-alkali land, further improving the effect of restoring the vegetation on the saline-alkali land. After the excess fresh water is absorbed by the roots of the vegetation, the excess fresh water will continue to penetrate downward to dissolve the salt in the soil of the restoration layer. The saline-alkali water formed after the salt is dissolved in the water will flow into the horizontal blind pipe through the longitudinal blind pipe at the bottom of the restoration layer, and then flow into the water collection well through the water collection pipe. Through continuous cyclic operation, the vegetation on the saline-alkali land can be restored.
[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A saline-alkali land vegetation restoration structure, characterized in that: The invention comprises a circular ditch dug around, the circular ditch surrounds the saline-alkali land, the saline-alkali land is surrounded by earth ridges, the top of the earth ridge is provided with a drainage ditch, the bottom of the drainage ditch is higher than the surface of the saline-alkali land, the uppermost layer of the saline-alkali land is a repair layer, the bottom of the repair layer is buried with longitudinal blind pipes and transverse blind pipes, the longitudinal blind pipes are arranged parallel to each other, one end of a plurality of longitudinal blind pipes are connected to the transverse blind pipes, the transverse blind pipes are connected to a water collection well through a water collecting pipe, one end of the water collecting pipe is located at the bottom of the water collection well, and the water collection well is located outside the circular ditch. A manhole cover is provided on the top of the water collection well, a support plate is fixedly provided on the side wall of the water collection well, a lifting rod is slidably provided on the support plate, a floating block is provided at the bottom of the lifting rod, the top of which passes through the manhole cover and extends to the outside, a contact plate is provided on the side of the lifting rod, a travel switch is provided above the contact plate, and the travel switch is provided on the bottom surface of the manhole cover, a first water pump is provided on one side of the water collection well, the first water pump is connected to a first water pumping pipe, one end of the first water pumping pipe extends to the bottom of the water collection well, and the water outlet of the first water pump is connected to a drain pipe.
2. The saline-alkali land vegetation restoration structure according to claim 1, characterized in that: The longitudinal blind pipe is arranged obliquely, and the water collection well is located on the lower side of the longitudinal blind pipe.
3. The saline-alkali land vegetation restoration structure according to claim 1, characterized in that: A ground film is laid at the bottom of the repair layer, and the longitudinal blind pipe is located on the top of the ground film.
4. The saline-alkali land vegetation restoration structure according to claim 1, characterized in that: Waterproof membranes are laid on both sides and the bottom of the annular ditch.
5. The saline-alkali land vegetation restoration structure according to claim 1, characterized in that: The upper side surface of the lifting rod is provided with scale lines.
6. The saline-alkali land vegetation restoration structure according to claim 1, characterized in that: It also includes a rainwater irrigation mechanism, which includes a second water pumping pipe, a second water pump, a main water pipe, a secondary water pipe and a nozzle. The second water pump is arranged on the top of the earth ridge. One end of the second water pumping pipe is arranged at the bottom of the ring ditch, and the other end is connected to the second water pump. One end of the main water pipe is connected to the water outlet of the second water pump, and the other end extends and spans the entire saline-alkali land. Multiple secondary water pipes are arranged horizontally and the middle parts are all connected to the main water pipe. Multiple water nozzles are arranged at the bottom of the secondary water pipes.