CN215012237U - Foreign soil layer structure based on solid waste of river and lake bottom mud and phosphorite - Google Patents
Foreign soil layer structure based on solid waste of river and lake bottom mud and phosphorite Download PDFInfo
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- CN215012237U CN215012237U CN202121337637.1U CN202121337637U CN215012237U CN 215012237 U CN215012237 U CN 215012237U CN 202121337637 U CN202121337637 U CN 202121337637U CN 215012237 U CN215012237 U CN 215012237U
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Abstract
The utility model discloses a foreign soil layer structure based on river lake bed mud is useless admittedly with phosphorus ore deposit by last to be foreign soil top layer, middle permeable bed and foreign soil basic unit in proper order down, the upper strata on foreign soil top layer is provided with plant seeds, and the contact surface between every layer of foreign soil layer structure is cockscomb structure transition structure. The zigzag transition structure enables the soil layer structures to be staggered with each other, nutrients can better permeate, plants can absorb the nutrients, the stress effect can be increased, and each layer of soil layer structure is more stable and has higher strength.
Description
Technical Field
The utility model relates to a soil horizon structure specifically provides a foreign soil horizon structure based on river lake bed mud is useless admittedly with phosphorus ore.
Background
Aiming at the current situations of serious water and soil loss and reduced ecological function of the bank slope in China, the development and popularization of the ecological bank protection technology becomes an important technical measure for the treatment and restoration of the river and lake ecological system in China. The vegetation concrete is an ecological slope bank protection technology which is widely applied, can be used for restoring and reconstructing ecological environments such as river bank protection, channel revetment, highway side slope and the like, has the characteristic of reinforcing the bank by the traditional concrete bank protection, can form green natural landscape, keeps the biological diversity of nearby microbial habitats and plays a role in purifying water quality, and has very outstanding social benefit and ecological benefit.
The soil dressing structure laid on the surface of the plant growing concrete provides a growing environment for plants and protects the plant growing concrete filling material from loss, and the common soil dressing structure is prepared by adopting common soil as a base material and then mixing and laying appropriate nutrient fertilizer and/or organic matter, adhesive, water-retaining agent and the like. At present, the research on foreign soil in China mainly focuses on the aspects of construction devices and processes. The chinese utility model patent publication No. CN201120312772.0 discloses a soil-removing fixing device, which comprises a soil-removing bag juxtaposed on a base surface and anchoring nails for fixing the soil-removing bag; the Chinese invention patent with the publication number of CN101103696B discloses a method for recovering vegetation on a rock slope, which adopts a combination mode of double-layer injection of foreign soil and organic matter and direct seeding of seeds and transplanting of arbor and shrub seedlings; the Chinese patent of invention with publication number CN105340661B discloses a block-shaped foreign soil planting layer and a method for planting trees by using the same, aiming at saline-alkali areas, the method consists of an upper layer of aeolian pulverized fine sand soil layer, a lower layer of large particle layer and a grid cloth positioned between the upper layer and the lower layer, and can effectively control the salt content in the soil and avoid the invasion of the surrounding salt content. The soil dressing structure adopts a layered form to adapt to plant growth, guarantee the supply of water and nutrients of plants, effectively guarantee the stable structure of a soil layer, and is not reported in the aspect of difficult landslide when being used as river channel revetment.
Disclosure of Invention
For overcoming the not enough of above-mentioned prior art, the utility model provides a foreign soil layer structure based on river lake bed mud is useless admittedly with the phosphorus ore can promote moisture infiltration, for vegetation provides and lasts the nutrition supply, has higher intensity simultaneously, more stabilizes and is difficult for causing the landslide when as the river course bank protection.
The utility model discloses a following technical scheme realizes:
the utility model provides a foreign soil layer structure based on solid useless of river lake bed mud and phosphorus ore, by last to be foreign soil top layer, middle permeable bed and foreign soil basic unit in proper order down, the upper strata on foreign soil top layer is provided with plant seeds, every layer contact surface between the foreign soil layer structure is cockscomb structure transition structure. Compare adopt ordinary soil to assist in prior art and form the foreign soil structure of individual layer with the fertile nutrition, the utility model discloses set up middle permeable bed in the middle of foreign soil, let foreign soil structure be fit for vegetation, improve moisture infiltration transport efficiency, guarantee plant moisture and nutrient supply.
The zigzag transition structure enables the soil layer structures to be staggered with each other, the contact surface is increased, so that moisture and nutrients can better permeate, the plant absorption is facilitated, the water retention performance and the fertility of the soil layer structures can be ensured, and the survival rate of the plants is improved; meanwhile, the serrated transition structure increases the stress effect, so that each layer of soil layer structure is more stable, the soil layer structure has higher strength, and the soil layer structure can effectively resist scouring and prevent landslide caused by unstable side slopes when used as a river course slope protection.
Preferably, the steel slag sand with the particle size of 2.35-5mm is uniformly distributed on the middle permeable layer.
Preferably, the foreign soil surface layer and the foreign soil base layer are respectively and uniformly distributed with phosphorus slag with the fineness of 100-200 meshes.
The sawtoothed transition structures and the steel slag sand are arranged among the soil layers to act together, when rainwater penetrates into the surface layer of the passenger soil, the contact surfaces among the soil layers are increased due to the sawtoothed transition structures, the rainwater can be accelerated to penetrate from the soil dressing base layer to the middle permeable layer under the action of the steel slag sand in the middle permeable layer, the water penetration and conveying efficiency is improved, and the roots of plants are prevented from being rotten due to long-term immersion in the water; meanwhile, the alien soil base layer can be used as a water retention layer, water is stored in the alien soil base layer under the action of the sawtooth-shaped transition structure and the steel slag sand, and the stored water of the alien soil base layer can be absorbed when the plants lack water, so that the water supply of the plants is guaranteed.
Preferably, the plant seeds are arranged within 2cm of the upper layer of the surface layer of the foreign soil.
Preferably, the plant seeds are in a direct spray setting.
Preferably, the zigzag transition structure is a tooth-shaped groove.
Preferably, the pitch of the serrated grooves is 0.5 to 0.8cm and the depth is 0.5 to 0.8cm, and more particularly, the pitch of the serrated grooves is 0.6cm and the depth is 0.6 cm.
Preferably, the thickness of the foreign soil surface layer is 3-5cm, and more particularly, the thickness of the foreign soil surface layer is 4 cm.
Preferably, the thickness of the intermediate water-permeable layer is 2-4cm, more particularly, the thickness of the intermediate water-permeable layer is 3 cm.
Preferably, the thickness of the alien soil base layer is 2-4cm, and more particularly, the thickness of the alien soil base layer is 3 cm.
To sum up, the utility model discloses possess following beneficial effect:
(1) make crisscross each other between the soil layer structure through cockscomb structure transition structure, the contact surface increases for moisture and nutrient better permeate, do benefit to the plant and absorb, can guarantee soil layer structure's water retention ability and fertility simultaneously, improve the plant survival rate.
(2) Under the combined action of the sawtooth-shaped transition structure and the steel slag sand, when rainwater permeates into the surface layer of the soil, the contact surface between soil layers is increased due to the sawtooth-shaped transition structure, and the penetration of the rainwater from the surface layer of the soil to the base layer of the soil can be accelerated under the action of the steel slag sand in the middle permeable layer, so that the water permeation and conveying efficiency is improved, and the roots of plants are prevented from being rotten due to long-term soaking in water; meanwhile, the alien soil base layer can be used as a water retention layer, water is stored in the alien soil base layer under the action of the sawtooth-shaped transition structure and the steel slag sand, and the stored water of the alien soil base layer can be absorbed when the plants lack water, so that the water supply of the plants is guaranteed.
(3) The stress effect is enhanced through the zigzag transition structure between soil layers, so that each layer of soil layer structure is more stable, the soil layer structure has higher strength, and the soil layer structure can effectively resist scouring and prevent landslide caused by unstable side slope when used as a river channel slope protection.
Drawings
Fig. 1 is the schematic diagram of the soil layer structure section of the present invention.
Reference numerals: 1. a soil surface layer is removed; 2. a middle permeable layer; 3. a soil base layer is removed; 4. a plant seed; 5. a saw-toothed transition structure.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the following examples and comparative examples, the river and lake bottom mud of a certain water system remediation project in the cauda district of Fuzhou city, Fujian province is mixed with phosphorite solid waste for improvement test, and the preparation method of the soil layer structure of the foreign soil comprises the following steps:
1) weighing river and lake bottom mud, phosphorus slag and humic acid organic fertilizer according to the mass percentage of 60:25:15, uniformly mixing the river and lake bottom mud and the phosphorus slag, naturally stacking the closed materials at a rain sheltering position for 24-48 hours, discharging upper water after precipitation to enable the water content of the river and lake bottom mud to reach 50-55%, and uniformly mixing the mixture of the river and lake bottom mud and the phosphorus slag with the humic acid organic fertilizer to obtain a material A;
2) weighing phosphogypsum, steel slag sand and humic acid organic fertilizer according to the mass percentage of 10:75:15, and mixing and stirring for 30s to obtain a material B;
3) paving the material A on the surface layer of the plant-growing concrete, wherein the paving thickness is 3cm, and thus obtaining the soil dressing base layer;
4) setting a saw-tooth transition structure with the distance of 0.6cm and the depth of 0.6cm on the surface of the soil-dressing base layer paved in the step 3);
5) laying the material B on the sawtooth-shaped transition structure in the step 4), wherein the laying thickness is 3cm, and obtaining an intermediate permeable layer;
6) setting a saw-tooth-shaped transition structure with the distance of 0.6cm and the depth of 0.6cm on the surface of the middle water-permeable layer paved in the step 5);
7) and (3) paving the material A on the sawtooth-shaped transition structure in the step 6), wherein the paving thickness is 4cm, and thus obtaining the surface layer of the foreign soil.
The above steps are merely examples, and are not intended to limit the present invention.
Wherein the humic acid organic fertilizer is a commercially available product, and the manufacturer is Handan market-sourced WoFei technology Co., Ltd; the same organic fertilizer of humic acid is adopted in the examples and the comparative examples, which is the prior art and is not used as a further limitation of the invention.
Example 1
As shown in figure 1, the foreign soil layer structure based on the solid waste of the river and lake bottom mud and the phosphorite sequentially comprises a foreign soil surface layer 1, a middle permeable layer 2 and a foreign soil base layer 3 from top to bottom, plant seeds 4 are arranged on the upper layer of the foreign soil surface layer 1, the plant seeds 4 are arranged within 2cm of the upper layer of the foreign soil surface layer 1 by adopting direct spray seeding, the contact surface between each layer of the foreign soil layer structure is a sawtooth-shaped transition structure 5, the sawtooth-shaped transition structure 5 is a tooth-shaped groove, the distance between the tooth-shaped grooves is 0.6cm, and the depth is 0.6 cm.
The surface layer 1 and the base layer 3 of the foreign soil are respectively and uniformly distributed with 100-mesh and 200-mesh phosphorus slag, and also contain river and lake bottom mud and humic acid organic fertilizer, and the middle permeable layer 2 is uniformly distributed with steel slag sand with the grain diameter of 2.35-5mm, and also contains phosphogypsum and humic acid organic fertilizer. The steel slag sand is fine particles obtained by screening roller steel slag, and the humic acid organic fertilizer is prepared by fermenting plant residues such as crop straws, leaves, vegetables and the like.
Comparative example 1
Comparative example 1 differs from example 1 in that no sawtooth transition structure is established.
Comparative example 2
Comparative example 2 differs from example 1 in that a zigzag transition structure was established with a pitch of 0.4cm and a depth of 0.4 cm.
Comparative example 3
Comparative example 3 differs from example 1 in that the thickness of the alien soil surface layer, the intermediate permeable layer and the alien soil base layer are 4, 4.5 and 3cm, respectively.
Application example Performance detection
And (3) within the range of 2cm on the soil surface, carrying out spray sowing on bermuda grass seeds by using the foreign soil, simulating rainfall infiltration conditions, and measuring the pH value, the shear strength, the seed germination time and the vegetation coverage rate after one month of each soil layer.
The utility model discloses a test method of soil layer shear resistance internal friction angle and cohesion goes on according to the regulation in GB/T50123-2019 geotechnical test method standard.
The test results of the examples and comparative examples are shown in Table 2:
TABLE 2
By comparing the experimental data in table 2, it can be seen that:
comparative example 1 compares in embodiment 1, does not set up cockscomb structure, and soil layer shear strength reduces, and cockscomb structure between the soil layer increases the atress effect for it is more stable between every layer of soil layer structure, has higher intensity, can effectively the antiscour when as the river course bank protection and prevent the landslide that causes because of the side slope is unstable.
Compared with the embodiment 1, when the space of the saw-toothed transition structure is reduced and the depth is reduced, the shear strength of the soil layer structure is reduced, the shear internal friction angle and the cohesive force of the soil layer are reduced, the soil layer structure is not stable, the moisture permeation and conveying efficiency is low, and the plant growth is not facilitated.
Compared with the embodiment 1, the comparative example 3 has the advantages that the thickness of the middle permeable layer is too thick, so that the middle permeable layer is not suitable for the growth of plant roots, the soil layer strength is reduced, and the middle permeable layer is not suitable for river channel revetment.
According to the test results, the preparation method and the soil layer structure of the embodiment are beneficial to the growth of the bermuda grass, the water wettability is good after irrigation, the pH value of soil is weak acid, the internal friction angle in the shear strength is increased, and the cohesive force is increased, so that the soil layer structure is more stable, the germination time of the bermuda grass is early, and the vegetation coverage rate of the foreign soil surface after one month growth is high.
The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a foreign soil layer structure based on solid useless of river lake bed mud and phosphorus ore which characterized in that is by last foreign soil top layer, middle permeable bed and foreign soil basic unit down in proper order, the upper strata on foreign soil top layer is provided with plant seeds, every layer contact surface between the foreign soil layer structure is cockscomb structure transition structure.
2. The foreign soil and soil layer structure based on the solid waste of the river and lake bottom mud and the phosphorite as claimed in claim 1, wherein the steel slag sand with the particle size of 2.35-5mm is uniformly distributed on the middle permeable layer.
3. The foreign soil layer structure based on the solid waste of the river and lake bottom mud and the phosphorite as claimed in claim 1, wherein the foreign soil surface layer and the foreign soil base layer are respectively and uniformly distributed with the phosphorus slag with the fineness of 100-200 meshes.
4. The foreign soil layer structure based on the solid waste of the river and lake bottom mud and the phosphorite as claimed in claim 1, wherein the plant seeds are arranged within 2cm of the upper layer of the foreign soil surface layer.
5. The foreign soil layer structure based on the river and lake bottom mud and the phosphorite solid waste is characterized in that the plant seeds are in a direct spray seeding arrangement.
6. The foreign soil and soil layer structure based on the solid waste of the river and lake bottom mud and the phosphorite as claimed in claim 1, wherein the zigzag transition structure is a tooth-shaped groove.
7. The foreign soil layer structure based on the river and lake bottom mud and the phosphorite solid waste is characterized in that the space between the tooth-shaped grooves is 0.5-0.8cm, and the depth is 0.5-0.8 cm.
8. The foreign soil layer structure based on the river and lake bottom mud and the phosphorite solid waste is characterized in that the thickness of the foreign soil surface layer is 3-5 cm.
9. The foreign soil and soil layer structure based on the river and lake bottom mud and the phosphorite solid waste is characterized in that the thickness of the middle permeable layer is 2-4 cm.
10. The alien soil layer structure based on the solid waste of river and lake bottom mud and phosphorite as claimed in claim 1, wherein the thickness of the alien soil base layer is 2-4 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337637.1U CN215012237U (en) | 2021-06-16 | 2021-06-16 | Foreign soil layer structure based on solid waste of river and lake bottom mud and phosphorite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121337637.1U CN215012237U (en) | 2021-06-16 | 2021-06-16 | Foreign soil layer structure based on solid waste of river and lake bottom mud and phosphorite |
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| CN202121337637.1U Active CN215012237U (en) | 2021-06-16 | 2021-06-16 | Foreign soil layer structure based on solid waste of river and lake bottom mud and phosphorite |
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