CN214402046U - Saline and alkaline land afforestation salt elimination infiltration structure - Google Patents

Saline and alkaline land afforestation salt elimination infiltration structure Download PDF

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Publication number
CN214402046U
CN214402046U CN202120050527.0U CN202120050527U CN214402046U CN 214402046 U CN214402046 U CN 214402046U CN 202120050527 U CN202120050527 U CN 202120050527U CN 214402046 U CN214402046 U CN 214402046U
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soil
gradient
saline
planting soil
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赵钰
马婕
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Jinjiantong Tianjin Information Technology Co ltd
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Jinjiantong Tianjin Information Technology Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/30Flood prevention; Flood or storm water management, e.g. using flood barriers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2

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Abstract

A saline-alkali soil greening salt-removing infiltration structure comprises a gradient planting soil layer, a gradient grading gravel layer, a reversed filter layer, a blind ditch, a plain soil compaction layer, a concave green land, a ground surface covering and a coarse sand infiltration layer; the concave green land is positioned in the greening middle of the saline-alkali soil and is used for rapidly gathering excessive surface rainwater during rainfall so as to avoid damage to vegetation; the ground surface covering is arranged above the concave green land; the coarse sand infiltration layer is positioned below the soil layer of the concave green land and above the gradient graded crushed stone layer at intervals. The utility model can collect the surface runoff rainwater to the concave green place and discharge quickly during the rainfall period; the demand of greening plants is met by less improved soil or removed soil through providing the planting soil thickness according to the demand in the saline-alkali area; during rainfall, rainwater infiltrates, and meanwhile, salt removal on the planting soil can be realized; the lower part of the planting soil is fully paved with the inverted filter layer and the graded broken stone layer, so that the salinization of the planting soil caused by the capillary action of the saline and alkali along with water or the lifting of the underground water level is prevented.

Description

Saline and alkaline land afforestation salt elimination infiltration structure
Technical Field
The utility model relates to a soil and water conservation technical field, in particular to greenery patches surface runoff infiltration technique.
Background
The sponge city technology is an important link of water and soil conservation technology, and the technology realizes the functions of absorbing and releasing rainwater in cities by means of combining nature and manpower.
The existing sponge urban green land storage and seepage technology usually focuses on that excessive rainwater can be quickly infiltrated during rainfall, excessive surface rainwater is prevented from being stored, even the rainwater stored in the green land flows back to the hard pavement, the condition of saltpetering and alkalifying of the planting soil is ignored, and the technology is mainly characterized in that:
1. during rainfall, the underground water level rises, and saline alkali invades planting soil along with water;
2. in daily life, groundwater with a large amount of saline alkali invades planting soil due to the capillary action of water.
SUMMERY OF THE UTILITY MODEL
The purpose of the present invention is to solve at least one of the technical drawbacks.
Therefore, the utility model aims to provide a saline-alkali soil greening salt-removing infiltration structure, which comprises a gradient planting soil layer, a gradient graded crushed stone layer, a reversed filter layer, a blind ditch, a plain soil tamping layer, a concave green land, a ground surface covering and a coarse sand infiltration layer;
the gradient planting soil layer is formed into planting soil layers with different thicknesses and height differences according to different thicknesses of planting soil needed by overground plant roots, a thicker planting soil layer is arranged for plants with developed arbor roots, and a smaller thickness of planting soil is arranged for plant planting areas with smaller soil layer thicknesses needed by flower shrubs and the overground plant roots, so that the gradient planting soil layer is used for saving greening soil improvement or soil replacement amount of the saline-alkali soil;
the graded broken stone layer is positioned below the graded planting soil layer, graded broken stones are horizontally distributed at the part with the same planting soil thickness, and the gentle slope distribution at the part with different planting soil thicknesses is connected;
the blind ditches are arranged below the gradient graded crushed stone layer and in the grooves of the plain soil tamping layer at intervals;
the inverted filter layer is arranged at the joint positions of the gradient graded crushed stone layer and the blind ditch and the plain soil ramming layer respectively;
the gradient graded crushed stone layer and the inverted filter layer can ensure that the situation of saltpetering alkali of the planting soil is caused by the lifting of underground water level or the capillary action of water in daily period under the condition that rainwater infiltrates into the ground in the rainfall period;
the blind ditch is connected with municipal drainage (not shown in the figure), so that excessive water which cannot permeate during rainfall can be drained in time;
the concave green land is positioned in the greening middle of the saline-alkali soil and is used for rapidly gathering excessive surface rainwater during rainfall so as to avoid damage to vegetation;
the surface covering is arranged above the concave green land and is used for preventing the planting soil around the concave green land from flowing along with the surface of the concave green land and preventing the exposed land from being attractive;
the coarse sand infiltration layer is positioned at a position spaced between the lower part of the soil layer of the lower concave green land and the upper part of the gradient graded crushed stone layer, and the coarse sand infiltration layer has more pores, so that the surface water excessively gathered on the lower concave green land during rainfall can be quickly infiltrated and discharged.
Preferably, the blind ditch is a tunnel filled with coarse sand and a perforated pipe in the middle.
The utility model has the advantages and positive effects that: during rainfall, surface runoff rainwater can be collected to a concave green place and quickly discharged; the demand of greening plants is met by less improved soil or removed soil through providing the planting soil thickness according to the demand in the saline-alkali area; during rainfall, rainwater infiltrates, and meanwhile, salt removal on the planting soil can be realized; the lower part of the planting soil is fully paved with the inverted filter layer and the graded broken stone layer, so that the salinization of the planting soil caused by the capillary action of the saline and alkali along with water or the lifting of the underground water level is prevented.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is the structural schematic diagram of the greening, salt-discharging and infiltration of saline-alkali soil of the utility model.
In the figure, 1 is a gradient planting soil layer, 2 is a gradient grading rubble layer, 3 is a reverse filtering layer, 4 is a blind ditch, 41 is coarse sand, 42 is a perforated pipe, 5 is a plain soil tamping layer, 6 is a concave green land, 7 is a ground surface covering, and 8 is coarse sand is infiltrated into a permeable layer.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the beneficial results of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1, a saline-alkali soil greening salt-removing infiltration structure comprises a gradient planting soil layer 1, a gradient graded crushed stone layer 2, a reverse filtration layer 3, a blind ditch 4, a plain soil compaction layer 5, a concave green land 6, a ground surface covering 7 and a coarse sand infiltration layer 8;
the gradient planting soil layer 1 is a planting soil layer with different thicknesses and height differences formed according to different thicknesses of planting soil needed by overground plant roots, a thicker planting soil layer is arranged for plants with developed arbor roots, and a smaller planting soil thickness is arranged for a plant planting area with a smaller soil thickness needed by flower shrubs and the overground plant roots, so that the soil improvement or soil replacement amount for greening the saline-alkali soil is saved;
the graded broken stone layer 2 is positioned below the graded planting soil layer 1, graded broken stones are horizontally distributed at the part with the same planting soil thickness, and the gentle slope distribution at the part with different planting soil thicknesses is connected;
blind ditches 4 are arranged below the gradient graded crushed stone layer 2 at intervals and in the grooves of the plain soil tamping layer 5;
the blind ditch 4 is a tunnel filled with coarse sand 41 and a perforated pipe 42 at the middle part.
The inverted filter layer 3 is arranged at the joint positions of the gradient graded crushed stone layer 2 and the blind ditch 4 with the plain soil tamping layer 5 respectively;
the gradient graded crushed stone layer 2 and the inverted filter layer 3 can ensure that the situation of saltpetering alkali of the planting soil is caused by the lifting of underground water level or the capillary action of water in daily period under the condition that rainwater infiltrates into the ground in the rainfall period;
the blind ditch 4 is connected with a municipal drainage figure, which is not shown, and can ensure that the excessive water which cannot permeate during the rainfall period can be drained in time;
the concave green land 6 is positioned in the greening middle of the saline-alkali soil and is used for rapidly gathering excessive surface rainwater during rainfall so as to avoid damage to vegetation;
the surface coverings 7 are arranged above the concave green land 6 and are used for preventing the planting soil around the concave green land from flowing along with the surface of the concave green land 6 and preventing the exposed land from forming and being attractive;
the coarse sand infiltration layer 8 is positioned at a position spaced below the soil layer of the lower concave green land 6 and above the gradient graded crushed stone layer 2, and due to more pores of the coarse sand infiltration layer, the surface water excessively gathered on the lower concave green land can be quickly infiltrated and discharged during rainfall.
The present invention has been described in detail with reference to the embodiments, but the present invention is only a preferred embodiment, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (2)

1. The utility model provides a saline and alkaline land afforestation salt elimination infiltration structure which characterized in that: comprises a gradient planting soil layer (1), a gradient graded crushed stone layer (2), a reversed filter layer (3), a blind ditch (4), a plain soil compaction layer (5), a concave green land (6), a ground surface covering (7) and a coarse sand infiltration layer (8);
the gradient planting soil layer (1) is formed into planting soil layers with different thicknesses and height differences according to different thicknesses of planting soil required by overground plant roots, and a plant planting area requiring less soil layer thickness for the plant roots is provided with less planting soil thickness for saving the greening soil improvement or soil replacement amount of the saline-alkali soil;
the gradient graded broken stone layer (2) is positioned below the gradient planting soil layer (1), graded broken stones are horizontally distributed at the part with the same planting soil thickness, and the gentle slope distribution at the part with different planting soil thicknesses is connected;
the blind ditches (4) are arranged below the gradient graded crushed stone layer (2) at intervals and in the grooves of the soil ramming layer (5);
the inverted filter layer (3) is arranged at the joint positions of the gradient graded crushed stone layer (2) and the blind ditch (4) and the soil compacting layer (5) respectively;
the concave green land (6) is positioned in the middle of greening of the saline-alkali soil and is used for rapidly gathering excessive surface rainwater during rainfall so as to avoid damage to vegetation;
the ground surface covering (7) is arranged above the concave green land (6);
the coarse sand infiltration layer (8) is located at a position spaced below the soil layer of the concave green land (6) and above the gradient graded crushed stone layer (2).
2. A saline-alkali soil greening and salt-discharging infiltration structure as claimed in claim 1, wherein the blind ditch (4) is a tunnel filled with coarse sand (41) and a perforated pipe (42) in the middle.
CN202120050527.0U 2021-01-10 2021-01-10 Saline and alkaline land afforestation salt elimination infiltration structure Active CN214402046U (en)

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CN202120050527.0U CN214402046U (en) 2021-01-10 2021-01-10 Saline and alkaline land afforestation salt elimination infiltration structure

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Application Number Priority Date Filing Date Title
CN202120050527.0U CN214402046U (en) 2021-01-10 2021-01-10 Saline and alkaline land afforestation salt elimination infiltration structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114451230A (en) * 2022-03-01 2022-05-10 华清农业开发有限公司 Planting method of moderate and severe saline-alkali soil water retention, salt resistance and carbon increase fertile soil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114451230A (en) * 2022-03-01 2022-05-10 华清农业开发有限公司 Planting method of moderate and severe saline-alkali soil water retention, salt resistance and carbon increase fertile soil
CN114451230B (en) * 2022-03-01 2023-02-17 华清农业开发有限公司 Planting method of moderate and severe saline-alkali soil water retention, salt resistance and carbon increase fertile soil

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