CN111593720A - Ecological system for preventing wind and fixing sand through sand barriers - Google Patents

Abstract

The invention discloses an ecological system for wind-proof and sand-fixing through sand barriers. Each row of sand barriers is provided with another sand barrier at a certain row distance; a condenser for collecting water vapor is arranged above the sand barriers. The present invention provides an ecological system for windproof and sand-fixing through sand barriers. The perennial reeds are used to make the sand barriers, which is convenient for production. The set first wind shields have a certain inclination angle relative to the horizontal direction, so that part of the wind sand can pass through the gaps between the first wind shields, effectively reducing the accumulation potential energy of windward sand on the windward side, and weakening the accumulation of sand particles on the wall. adverse effects on wind performance, thereby enhancing the long-term effectiveness of the windshield.

Description

An ecosystem for windbreak and sand fixation through sand barriers

technical field

The invention relates to an ecosystem for windbreak and sand fixation, in particular to an ecosystem for windbreak and sand fixation through sand barriers.

Background technique

Land desertification is still one of the most serious problems of resources and ecological environment in the world. It is also an important global economic and social problem, and an important reflection of the serious degradation of the fragile ecological environment. Due to global warming, especially since the 1990s, severe drought, shrinking wetlands, drying up of small rivers and lakes, declining groundwater levels and increasing extreme weather events have resulted in the reduction of vegetation coverage and the death of trees. Local development of desertification. At present, there are more than 100 countries affected by desertification in the world. The global desertification area reaches 36 million square kilometers, and about 1 billion people are directly threatened by desertification. Although people all over the world are constantly fighting against desertification, desertification is still expanding at a rate of 50,000-70,000 km2 per year. my country is one of the countries most seriously affected by desertification in the world, and its vast arid, semi-arid and partly humid areas have serious land desertification. According to the Bulletin on the Status of Desertification and Sandification in China, as of 2014, the total area of desertified land in the country was 261.1593 million hectares, accounting for 78.45% of the desertification monitoring area and 27.20% of the total national land area, of which wind-eroded desertification land area was 182.6346 million hectares. It accounts for 69.93% of the desertified land area. The national desertified land area is 172.1175 million hectares, accounting for 17.93% of the total land area. It can be seen from this that the desertified land is mainly caused by wind erosion in my country, and the prevention and control of wind erosion is the main content of desertification control. The formation and development of wind erosion are mainly affected by atmospheric circulation, weather conditions and surface conditions. Under the current conditions, we cannot control the atmospheric circulation and weather conditions, so we can only take measures to control the formation of near-surface soil wind erosion, to reduce the number of occurrences, and to reduce the damage caused by the near-surface soil wind erosion.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention discloses an ecosystem for windbreak and sand fixation through sand barriers.

其中λ₀为沿程损失系数。The technical scheme of the present invention is: an ecological system for windbreak and sand fixation through sand barriers, comprising fences distributed in a rectangular shape, multiple rows of wind-shielding walls are arranged inside the fences, and multiple rows of wind-shielding walls are distributed with a certain row spacing on the inner side of the fence. Sand barriers, each row of sand barriers is provided with another sand barrier at a certain row spacing; a condenser for collecting water vapor is arranged above the sand barriers; the wind-blocking wall includes a base, and the upper part of the base is vertically erected There is a wall, a connecting piece is arranged between the top of the wall and the base, and a protective net is arranged on the connecting piece on the windward side of the wall; the wall includes at least two perpendicular to the base The connected struts and the first wind shields arranged laterally between the struts, the first wind shields are inclined at an angle to the horizontal direction; the row spacing is based on the single-row ideal vortex model, using the classical fluid mechanics method The corresponding relationship between the exposed grass head height h ₀ and the maximum distance l is quantitatively analyzed. The calculation formula is:

where λ ₀ is the loss coefficient along the way.

Further, on the basis of the technical solution of the present invention, when the height of the exposed grass head of the sand barrier is 30 cm, the row spacing l is 162 cm.

Further, on the basis of the technical solution of the present invention, the inclination angle between the first wind shield and the horizontal direction is 30°-60°, preferably 35°-55°, more preferably 40°-50°.

Further, on the basis of the technical solution of the present invention, the adjacent pillars are provided with open slots at the same height, and the two opposite groove surfaces of the open slots are arranged in parallel, and they are inclined to the horizontal direction. The angle corresponds to the inclination angle of the first wind shielding piece, and the first wind shielding piece is connected to the pillar through the opening slot.

Further, on the basis of the technical solution of the present invention, a second wind shielding piece is laterally arranged between the adjacent pillars, and the second wind shielding piece is vertically arranged along the horizontal direction.

Further, based on the technical solution of the present invention, a through hole is opened at the same height of the adjacent pillars, and the second wind shield is connected to the pillar through the through hole;

And/or, a plurality of the first wind deflectors and the second wind deflectors are all arranged along the longitudinal direction of the pillar, and the bottom of the pillar is arranged to two-fifths of the height of the pillar. The second windshield is arranged with the first windshield on the remaining part of the strut.

Further, based on the technical solution of the present invention, the porosity of the wall is 5-30%.

Further, on the basis of the technical solution of the present invention, the connecting piece is provided on the windward side and the leeward side of the wall, one end of the connecting piece is connected with the top of the pillar, and the other end is connected with the base. .

Further, on the basis of the technical solution of the present invention, the height of the pillar is less than the length of the base.

Further, on the basis of the technical solution of the present invention, the wind-shielding wall is provided with a sand-fixing area on the leeward side; the sand-fixing area is planted with herbs and woody plants.

Further, on the basis of the technical solution of the present invention, the herbal plant includes any one or a combination of at least two of Elymus chinensis, ice grass or Leymus chinensis;

And/or, the woody plant is a shrub plant, including Caragana serrata and/or Poplar.

Further, on the basis of the technical solution of the present invention, the protective net is made of high-density polyethylene (HDPE) material, and the porosity of the sand-fixing net is between 45-70%.

Further, on the basis of the technical solution of the present invention, the wind-blocking wall is a wind-blocking wall with 1.5m high strip holes, and the wind-blocking walls are equally spaced inside the fence.

Further, on the basis of the technical solution of the present invention, the sand barrier is a perennial herb reed straw, the height of the reed straw is 1-3 m, the diameter is 4-8 mm, and the reed straw is cut into 45-50 cm. The long section is buried 15-20cm underground, the height of the part left on the ground is 30cm, and the multiple reed straws are buried to 1.5m*1.5m, and the permeability rate is 0.3.

Further, on the basis of the technical solution of the present invention, the condenser is at a certain angle with the horizontal plane, and this angle is equal to the inclination angle between the first wind shield and the horizontal direction, and the first wind shield obliquely guides the wind upward. Movement, under the action of aerodynamic force, the air near the ground near the side of the windshield rises upward, driving the air near the ground of the windshield to move towards the windshield, and condenses the water vapor in the air through the condenser and guides it into the sand through the pipeline. Roots of herbs and woody plants grown in the area.

Further, on the basis of the technical solution of the present invention, the condenser is a corrugated plate, the condenser is fixed on the ground through four uprights at four corners, and the end of the condenser is provided with a water collection tank, and the water collection tank includes a rectangular frame body. The casing of the structure, the lower part of one side of the casing is provided with a plurality of drainage holes, and the drainage pipes connected to the sand-fixing area are inserted in the drainage holes.

beneficial effect

The present invention provides an ecological system for windproof and sand-fixing through sand barriers. The perennial reeds are used to make the sand barriers, which is convenient for production. The set first wind shields have a certain inclination angle relative to the horizontal direction, so that part of the wind sand can pass through the gaps between the first wind shields, effectively reducing the accumulation potential energy of windward sand on the windward side, and weakening the accumulation of sand particles on the wall. adverse effects on wind performance, thereby enhancing the long-term effectiveness of the windshield. In addition, the inclined arrangement of the first windshield prevents the spreading area of the wall from being too large, which can reduce the wind force in the horizontal direction of the wall caused by sandstorms, reduce the force at the connection between the wall and the base, and reduce the bending of the wall. It is possible to fold, thereby improving the service life of the windshield wall. The number of connectors can be adjusted according to local wind power and usage needs. In places with little wind effect, only one side connector is required, which can save the investment of connectors.

Description of drawings

Figure 1 is a distribution diagram of the present invention.

FIG. 2 is a schematic structural diagram of a windshield according to an embodiment of the present invention;

3 is a schematic structural diagram of another windshield wall provided by an embodiment of the present invention;

Figure 4 is a side view of the windshield provided in Figure 3;

Fig. 5 is the structural schematic diagram of the pillar provided in Fig. 3;

Fig. 6 is the connection schematic diagram of protective net and connector;

Fig. 7 is the schematic diagram of condenser;

Figure 8 is a schematic diagram of a water collection tank.

In the figure, 1-fence, 2-windshield, 3-sand barrier, 11-base, 12-wall, 13-connector, 14-protective net, 15-corrugated board, 16-column, 17-sink , 18-shell, 19-drainage hole, 121-pillar, 122-first windshield, 123-second windshield, 1211-open slot, 1212-slot surface, 1213-through hole.

Detailed ways

The ecosystem for windbreak and sand fixation through sand barriers of the present invention will be described in detail below with reference to the accompanying drawings.

其中λ₀为沿程损失系数；所述的沙障3的露出草头高度为30厘米时，行距l为162厘米；所述第一挡风片122与水平方向的倾斜角度为30°-60°，优选为35°-55°，进一步优选为40°-50°；相邻的所述支柱121的同一高度处均设有开口卡槽1211，所述开口卡槽1211相对的两个槽面1212平行设置，且其与水平方向的倾斜角度与所述第一挡风片122的倾斜角度相对应，所述第一挡风片122通过所述开口卡槽1211与所述支柱121连接；相邻的所述支柱121之间还横向设有第二挡风片123，且所述第二挡风片123沿水平方向垂直设置；相邻的所述支柱121的同一高度处开设有通孔1213，所述第二挡风片123通过所述通孔1213与所述支柱121连接；和/或，若干个所述第一挡风片122和所述第二挡风片123均沿所述支柱121的纵向排布，所述支柱121的底部至支柱121的五分之二高度处排布有所述第二挡风片123，所述支柱121的其余部分排布有所述第一挡风片122；所述墙体12的孔隙率为5-30％；所述墙体12的迎风侧和背风侧均设置有所述连接件13，所述连接件13的一端与所述支柱121顶部相连，另一端与所述底座11相连；所述支柱121的高度小于所述底座11的长度；所述的挡风墙2在背风侧设有固沙区；所述固沙区栽种有草本植物和木本植物；所述草本植物包括披碱草、冰草或羊草中的任意一种或至少两种的组合；和/或，所述木本植物为灌木植物，包括小叶锦鸡儿和/或杨柴；所述的防护网14为高密度聚乙烯(HDPE)材质，固沙网孔隙度为45-70％之间；所述的挡风墙2为1.5m高条形孔挡风墙2，挡风墙2等距分布在围栏1内部；所述的沙障3为多年生草本植物芦苇秸秆，所述的芦苇秸秆的高度为1-3m，直径为4-8mm，芦苇秸秆裁成45-50cm的长段，其中埋入地下15-20cm，留在地上部分高为30cm，多根芦苇秸秆埋设成1.5m*1.5m，疏透率0.3；所述的冷凝器与水平面呈一定角度，该角度与第一挡风片122与水平方向的倾斜角度相等，第一挡风片122将风导流斜向上运动，在空气动力作用下，靠近挡风墙2一侧的近地面空气向上抬升，带动挡风墙2近地面空气往挡风墙2方向运动，通过冷凝器将空气中的水蒸气冷凝并通过管道导入固沙区栽种的草本植物和木本植物根部；所述的冷凝器为波纹板15，冷凝器通过四角的四个立柱16固定在地面，冷凝器末端设有集水槽17，所述的集水槽17包括矩形框体结构的壳体18，所述的壳体18一侧下部设置有若干排水孔19，所述的排水孔19中插有连接固沙区的排水管。As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, an ecosystem for wind-proof and sand-fixing through sand barriers includes fences 1 distributed in a rectangular shape. There are multiple rows of wind-blocking walls 2, and there are multiple rows of sand barriers 3 distributed on the inner side of the wind-blocking walls 2 at a certain row spacing, and each row of sand barriers 3 is provided with another sand barrier 3 at a certain row spacing; There is a condenser for collecting water vapor; the windshield 2 includes a base 11, a wall 12 is vertically established on the upper part of the base 11, and a connecting piece 13 is provided between the top of the wall 12 and the base 11 The connecting piece 13 is located on the windward side of the wall 12 and is provided with a protective net 14; the wall 12 includes at least two pillars 121 vertically connected to the base 11 and horizontally arranged between the pillars 121 The first wind deflector 122 between them is at an inclined angle to the horizontal direction; the row spacing is based on the single-row ideal vortex model, and the analysis of the classical fluid mechanics method is used to quantitatively analyze the exposed grass. The corresponding relationship between the head height h ₀ and the maximum distance l, the calculation formula is:

Wherein λ ₀ is the loss coefficient along the way; when the height of the exposed grass head of the sand barrier 3 is 30 cm, the row spacing 1 is 162 cm; the inclination angle of the first windshield 122 and the horizontal direction is 30°-60° °, preferably 35°-55°, more preferably 40°-50°; the adjacent pillars 121 are provided with open slots 1211 at the same height, and the two opposite groove surfaces of the open slots 1211 1212 are arranged in parallel, and its inclination angle to the horizontal direction corresponds to the inclination angle of the first wind shielding piece 122, and the first wind shielding piece 122 is connected to the pillar 121 through the opening slot 1211; A second wind deflector 123 is also laterally arranged between the adjacent pillars 121, and the second wind deflector 123 is vertically arranged along the horizontal direction; through holes 1213 are opened at the same height of the adjacent pillars 121 , the second wind shield 123 is connected to the pillar 121 through the through hole 1213; and/or, a plurality of the first wind shield 122 and the second wind shield 123 are all along the column The longitudinal arrangement of 121, the second windshield 123 is arranged from the bottom of the column 121 to two-fifths of the height of the column 121, and the first windshield is arranged on the rest of the column 121 Sheet 122; the porosity of the wall 12 is 5-30%; the connecting piece 13 is provided on both the windward side and the leeward side of the wall 12, and one end of the connecting piece 13 is connected to the top of the pillar 121 The other end is connected to the base 11; the height of the pillar 121 is less than the length of the base 11; the windshield 2 is provided with a sand-fixing area on the leeward side; the sand-fixing area is planted with herbs and wood This plant; the herbaceous plant includes any one or a combination of at least two of Elymus japonica, icegrass or Leymus chinensis; and/or, the woody plant is a shrub plant, including Caragana vulgaris and/or Poplar Firewood; the protective net 14 is made of high-density polyethylene (HDPE) material, and the porosity of the sand-fixing net is between 45-70%; The wind walls 2 are equidistantly distributed inside the fence 1; the sand barriers 3 are perennial herb reed straws, the height of the reed straws is 1-3m, the diameter is 4-8mm, and the reed straws are cut into 45-50cm The long section is buried 15-20cm underground, the height of the part left on the ground is 30cm, and the multiple reed straws are buried to a distance of 1.5m*1.5m, and the porosity is 0.3; The inclination angle of the first wind shield 122 is equal to that of the horizontal direction, and the first wind shield 122 moves the wind guide obliquely upward. Under the action of aerodynamic force, the air near the ground near the side of the wind shield 2 is lifted upward, which drives the shield The air near the ground of the wind wall 2 moves in the direction of the windshield wall 2, and the water vapor in the air is condensed by the condenser and introduced into the roots of the herbs and woody plants planted in the sand-fixing area through the pipeline; the condenser is a corrugated plate 15, The condenser is fixed on the ground through four uprights 16 at the four corners, and the end of the condenser is A water collecting tank 17 is provided. The water collecting tank 17 includes a casing 18 with a rectangular frame structure. A number of drainage holes 19 are arranged at the lower part of one side of the casing 18. drain pipe.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (16)

1. The utility model provides an ecosystem who prevents wind and fix sand through sand barrier which characterized in that: the sand barrier protection device comprises a fence which is distributed in a rectangular shape, wherein a plurality of rows of wind-blocking walls are arranged in the fence, a plurality of rows of sand barriers are distributed on the inner side of each wind-blocking wall at intervals of a certain row distance, and another sand barrier is arranged on each sand barrier at intervals of a certain row distance; a condenser for collecting water vapor is arranged above the sand barrier; the wind-break wall comprises a base, a wall body is vertically arranged at the upper part of the base, a connecting piece is arranged between the top of the wall body and the base, and a protective net is arranged on one side, located on the windward side, of the wall body; the wall body comprises at least two pillars vertically connected with the base and a first wind shield transversely arranged between the pillars, and the first wind shield forms an inclined angle with the horizontal direction; the line spacing is analyzed quantitatively according to a single-row ideal vortex column model by using the analysis of a classical fluid mechanics method to obtain the height h of the exposed grass head₀And the corresponding relation between the maximum distance l is calculated by the following formula:

wherein λ₀Is the loss coefficient along the way.

2. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: when the height of the exposed grass head of the sand barrier is 30cm, the row spacing l is 162 cm.

3. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the inclination angle of the first wind deflector with the horizontal direction is 30-60 degrees, preferably 35-55 degrees, and more preferably 40-50 degrees.

4. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: adjacent the same high department of pillar all is equipped with the opening draw-in groove, two relative groove face parallel arrangement of opening draw-in groove, and its and the horizontal direction's inclination with the inclination of first windshield piece is corresponding, first windshield piece passes through the opening draw-in groove with the pillar is connected.

5. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: and a second wind blocking sheet is transversely arranged between the adjacent pillars and is vertically arranged along the horizontal direction.

6. The ecosystem of claim 5, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: through holes are formed in the same height position of the adjacent support columns, and the second wind blocking pieces are connected with the support columns through the through holes;

and/or, a plurality of first wind-break piece with second wind-break piece all follows the vertical arrangement of pillar, the bottom of pillar is arranged to the two fifths of the height department of pillar the second wind-break piece, the rest of pillar is arranged first wind-break piece.

7. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the porosity of the wall body is 5-30%.

8. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the windward side and the leeward side of the wall body are both provided with the connecting piece, one end of the connecting piece is connected with the top of the support column, and the other end of the connecting piece is connected with the base.

9. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the height of the strut is less than the length of the base.

10. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the wind-break wall is provided with a sand fixing area on the lee side; herbaceous plants and woody plants are planted in the sand fixing area.

11. The ecosystem of claim 10, wherein the ecological system is used for wind and sand prevention through sand barriers, and comprises: the herbaceous plant comprises any one or combination of at least two of elymus, wheatgrass or leymus;

and/or the woody plant is a shrub plant, including caragana microphylla and/or corynebacterium parvum.

12. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the protective net is made of high-density polyethylene (HDPE), and the porosity of the sand fixing net is 45-70%.

13. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the wind-break wall be 1.5m high bar hole wind-break wall, wind-break wall equidistance distributes inside the rail.

14. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the sand barrier is made of reed straws which are perennial herbaceous plants, the height of the reed straws is 1-3m, the diameter of the reed straws is 4-8mm, the reed straws are cut into long sections of 45-50cm, the reed straws are buried underground by 15-20cm, the height of the part left above the ground is 30cm, a plurality of reed straws are buried into 1.5m by 1.5m, and the dredging rate is 0.3.

15. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: condenser and level personally submit certain angle, this angle equals with first wind-break piece and horizontal direction's inclination, first wind-break piece is with the oblique upward movement of wind water conservancy diversion, under the aerodynamic action, the nearly ground air who is close to wind-break wall one side upwards lifts, drives the nearly ground air of wind-break wall toward the motion of wind-break wall direction, through condenser with the vapor condensation in the air and through the leading-in herbaceous plant and the woody plant root of planting in the firm sand area of pipeline.

16. The ecosystem of claim 1, wherein the ecological system is used for wind and sand prevention and fixation through sand barriers, and comprises: the condenser be the buckled plate, the condenser passes through four stands in four corners and fixes on ground, the condenser end is equipped with the water catch bowl, the water catch bowl include the casing of rectangle frame structure, casing one side lower part be provided with a plurality of wash ports, the wash port in insert the drain pipe of connecting solid husky district.

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