Structure for improving double-sided photovoltaic power generation benefit and construction method

Abstract

According to the structure and the construction method for improving the double-sided photovoltaic power generation benefit, a pit is formed in the double-sided photovoltaic back ground, a biological curing technology is adopted in the pit for transformation, the light reflectivity is improved, and therefore the double-sided photovoltaic power generation benefit is improved, and the structure and the construction method are easy to implement and low in cost. In addition, according to the method, the biological solidification technology and the plant solidification technology are combined for wind prevention and sand fixation, and the purpose of stably improving the efficiency of double-sided photovoltaic power generation can be achieved.

Description

Technical Field

[0001] The present invention relates to a structure and construction method for improving the efficiency of bifacial photovoltaic power generation, belonging to the technical field of photovoltaic power generation energy. Background Art

[0002] Due to sufficient lighting conditions in desert areas, the photovoltaic industry has witnessed significant development. In recent years, with the substantial investment in bifacial photovoltaics, the reflected light energy from the ground has also come into people's view, that is, to improve the power generation efficiency through the reflected light from the ground. Currently, the main direction explored by many scholars lies in the photovoltaic gain brought about by the change in the ground inclination angle, and these studies mainly remain at the theoretical level with very little practical application. At present, there is no new way that can be applied to actual improvement of bifacial photovoltaic power generation efficiency. Summary of the Invention

[0003] The present invention provides a structure and construction method for improving the efficiency of bifacial photovoltaic power generation, which solves the problems disclosed in the background art.

[0004] According to one aspect of the present application, a structure for improving the efficiency of bifacial photovoltaic power generation is provided, including a depression formed on the ground on the back side of the bifacial photovoltaic. On the original soil layer at the bottom of the depression, a first solidified soil layer, a reflection enhancement layer, and a reflection convergence layer are sequentially arranged from bottom to top. The light reflected by the reflection enhancement layer is converged onto the back plate of the bifacial photovoltaic through the reflection convergence layer. On the original soil layer around the depression, a second solidified soil layer and a windproof plant layer are sequentially arranged from bottom to top; wherein, both the first solidified soil layer and the second solidified soil layer are soil layers solidified by a biological solidifying liquid, the reflection enhancement layer is a pigment coating solidified by a biological solidifying liquid, and the reflection convergence layer is a microsphere layer solidified by a biological solidifying liquid.

[0005] Further, if the maximum slope angle of the depression is greater than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer is the maximum value within the first preset thickness range; wherein, the first preset thickness range is the range for maintaining the stability of the soil layer; If the maximum slope angle of the depression is less than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer is the minimum value within the first preset thickness range.

[0006] Further, if the biological activity of the biological solidifying liquid of the reflection enhancement layer is higher than the first activity threshold, the concentration of the pigment additive in the reflection enhancement layer is the maximum value within the first preset concentration range; wherein, within the first preset concentration range, the color of the pigment additive in the reflection enhancement layer is not affected by the color of the biological solidifying liquid itself; If the biological activity of the biological solidifying liquid of the reflection enhancement layer is lower than the second activity threshold, the concentration of the pigment additive in the reflection enhancement layer is the minimum value within the first preset concentration range; wherein, the second activity threshold is less than the first activity threshold.

[0007] Further, if the height of the double-sided photovoltaic mounting bracket is less than A1 times the width of the depression range, the bead count of the reflection and convergence layer is the maximum value within the preset bead count range; wherein, within the preset bead count range, the beads can converge the most reflected light onto the double-sided photovoltaic backplane. If the height of the double-sided photovoltaic mounting bracket is A2 times the width of the depression range, the bead count of the reflection and convergence layer is the minimum value within the preset bead count range; wherein, A2 and A1 are preset values, and A2 is less than A1.

[0008] Further, the geometric centers of all layers within the depression are all located in the central area of the double-sided photovoltaic backplane; the slope angle of any position of each layer within the depression with respect to the horizontal plane does not exceed the angle threshold.

[0009] Further, if the maximum ground surface wind speed is less than the first wind speed threshold, the solidification thickness of the second solidified soil layer is the minimum value within the second preset thickness range; if the maximum ground surface wind speed is greater than the second wind speed threshold, the solidification thickness of the second solidified soil layer is the maximum value within the second preset thickness range; wherein, the second preset thickness range is the range that can prevent wind erosion, and the second wind speed threshold is greater than the first wind speed threshold.

[0010] Further, if the plants in the windbreak plant layer are non-alkali-tolerant plants, the calcium source concentration of the biological solidification liquid in the second solidified soil layer is the minimum value within the second preset concentration range; if the plants in the windbreak plant layer are alkali-tolerant plants, the calcium source concentration of the biological solidification liquid in the second solidified soil layer is the maximum value within the second preset concentration range; wherein, the second preset concentration range is the range that meets the plant growth requirements.

[0011] According to another aspect of the present application, there is provided a construction method for a structure for enhancing the double-sided photovoltaic power generation efficiency, including: Excavate an injection construction area on the planned ground and fix the shape of the injection construction area through a template. During the curing and maintenance period, inject the biological solidification liquid into the construction area through the through holes on the template to form the first solidified soil layer of the injection construction area, and perform high-temperature shaping on the first solidified soil layer of the injection construction area during the transformation and shaping period; wherein, the curing and maintenance period is the time period corresponding to the temperature range in which the biological activity of the biological solidification liquid is greater than the third activity threshold, and the remaining time period is the transformation and shaping period; the injection construction area is a depression in-situ soil layer area with a slope angle greater than the natural angle of repose of the soil layer. Excavate a spraying construction area. During the curing and maintenance period, spray the biological solidification liquid onto the construction area to form the first solidified soil layer of the spraying construction area, and perform high-temperature shaping on the first solidified soil layer of the spraying construction area during the transformation and shaping period; wherein, the spraying construction area is a depression in-situ soil layer area with a slope angle less than the natural angle of repose of the soil layer. During the curing and maintenance period, spray the biological solidification liquid containing a pigment additive onto the surface of the first solidified soil layer to form a reflection enhancement layer, and perform high-temperature shaping on the reflection enhancement layer during the transformation and shaping period. During the curing and maintenance period, a biological curing liquid containing microbeads is sprayed onto the surface of the reflection enhancement layer to form a reflection convergence layer, and the reflection convergence layer is subjected to high-temperature shaping during the transformation and shaping period; Level the original soil layer around the depression, spray the biological curing liquid onto the leveled original soil layer, and sow windproof plant seeds after spraying is completed.

[0012] The beneficial effects achieved by the present invention: The present invention creates a depression on the ground on the back side of a bifacial photovoltaic panel, and uses biological curing technology to transform the depression, improving the light reflectivity, thereby enhancing the bifacial photovoltaic power generation efficiency. The implementation is simple, and it is a new way that can be applied to actual situations to enhance the bifacial photovoltaic power generation efficiency. Moreover, the present invention combines biological curing technology with plant curing for wind prevention and sand fixation, which can achieve the purpose of steadily enhancing the efficiency of bifacial photovoltaic power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure for enhancing the bifacial photovoltaic power generation efficiency; Figure 2 Schematic diagram of the concave surface of the depression being a unidirectional cylindrical surface; Figure 3 Schematic diagram of the concave surface of the depression being a bidirectional cylindrical surface; Figure 4 Schematic diagram of the concave surface of the depression being a spherical surface; Figure 5 Schematic diagram of the distribution of light radiation sensors; Figure 6 Flow chart of the construction method. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0015] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application.

[0016] At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships.

[0017] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered as part of the specification.

[0018] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0019] It should be noted that like reference signs and letters in the following figures indicate like items, and thus, once an item is defined in one figure, further discussion thereof in subsequent figures is not necessary.

[0020] Meanwhile, in the description of the embodiments of the present application, terms such as "first", "second", etc. are used only for descriptive distinction and should not be construed as indicating or implying relative importance. Thus, features defined with "first", "second" may explicitly or implicitly include one or more features.

[0021] See Figure 1 , Figure 1 , which is a schematic diagram of a structure for improving the double-sided photovoltaic power generation efficiency provided by an embodiment of the present application. The structure may at least include a depression formed on the ground surface behind the double-sided photovoltaic 8. On the original soil layer 1 at the bottom of the depression, a first solidified soil layer 2, a reflection enhancement layer 3, and a reflection convergence layer 4 are sequentially arranged from bottom to top. The light reflected by the reflection enhancement layer 3 is converged to the backplane of the double-sided photovoltaic 8 through the reflection convergence layer 4. On the original soil layer 1 around the depression, a second solidified soil layer 5 and a windbreak plant 6 layer are sequentially arranged from bottom to top. Among them, both the first solidified soil layer 2 and the second solidified soil layer 5 are soil layers solidified by a biological solidifying liquid. The reflection enhancement layer 3 is a pigment coating solidified by a biological solidifying liquid, and the reflection convergence layer 4 is a microsphere layer solidified by a biological solidifying liquid.

[0022] It should be noted that there is no specific requirement for the shape of the depression, as long as it ensures that the reflected light energy can irradiate the back of the double-sided photovoltaic 8. For example, as Figures 2-4 shown, the concave surface of the depression can be a unidirectional cylindrical surface, a bidirectional cylindrical surface, or a spherical concave surface.

[0023] In order to obtain the best reflection effect and determine the optimal depression shape, experiments can be pre-conducted, that is, a structure of Figure 1 is constructed. As Figure 5 shown, light radiation sensors 9 are installed at the four corners and the center of the back of the double-sided photovoltaic 8. The back irradiance intensity and irradiance distribution are monitored through the light radiation sensors 9, and then the concave surface is adjusted according to the detection results to determine the optimal concave surface under the current environment.

[0024] It should be noted that the surface of the original soil layer 1 at the bottom of the depression is solidified to form the first solidified soil layer 2. The reflection enhancement layer 3 and the reflection convergence layer 4 are both very thin layers. Therefore, the concave shapes of the first solidified soil layer 2, the reflection enhancement layer 3 and the reflection convergence layer 4 are consistent with the concave shape of the depression. The geometric centers of all layers within the depression are located in the central area of the backplane of the bifacial PV 8. Taking the spherical surface as an example, the spherical surface, the first solidified soil layer 2, the reflection enhancement layer 3 and the reflection convergence layer 4 are concentric structures.

[0025] In order to better converge light to the back of the bifacial PV 8, the range (i.e., diameter) of the depression should be greater than the width of the bifacial PV 8, less than 4 times the height of the mounting bracket 7 of the bifacial PV 8 and not greater than the spacing between adjacent bifacial PV 8s. The slope angle of any position of each layer within the depression with respect to the horizontal plane does not exceed the angle threshold, and the angle threshold is generally 60°.

[0026] It should be noted that the biological solidification technology includes but is not limited to EICP and MICP. The components of the biological solidification liquid include biological catalytic factors and cementitious solidification solutions. The biological catalytic factors include but are not limited to catalytic cells and catalytic enzymes. The environmental temperature should be between 10 and 50 degrees Celsius to ensure biological activity. The cementitious solidification solutions include but are not limited to urea and calcium chloride, urea and magnesium chloride, etc.

[0027] In order to maintain the stability of the soil layer, the first preset thickness needs to be controlled within the first preset thickness range, generally 2 - 6 cm. If the maximum slope angle of the depression is greater than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer 2 is the maximum value within the first preset thickness range, that is, 6 cm. If the maximum slope angle of the depression is less than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer 2 is the minimum value within the first preset thickness range, that is, 2 cm.

[0028] It should be noted that the solution components for spraying to form the reflection enhancement layer 3 mainly include biological solidification liquid, anti-seepage additives and pigment additives. The anti-seepage additives are one or more of xanthan gum, sodium polyacrylate, sodium alginate and polycarboxylic acid, etc. The pigment additives are one or more of barium sulfate, titanium dioxide, zinc oxide, aluminum oxide, iron oxide red, cobalt blue, cobalt green, etc.

[0029] In some embodiments, to prevent the color of the pigment additive from being affected by the color of the bio-curing liquid itself, the concentration of the pigment additive is controlled within a first preset concentration range, generally 50 - 400 g / L. If the bio-activity of the bio-curing liquid in the reflection enhancement layer 3 is higher than the first activity threshold, generally 10 mmol / L / min, the concentration of the pigment additive in the reflection enhancement layer 3 is the maximum value of the first preset concentration range, that is, 400 g / L. If the bio-activity of the bio-curing liquid in the reflection enhancement layer 3 is lower than the second activity threshold, generally 2 mmol / L / min, the concentration of the pigment additive in the reflection enhancement layer 3 is the minimum value of the first preset concentration range, that is, 50 g / L.

[0030] It should be noted that the solution components for spraying to form the reflection convergence layer 4 mainly include a bio-curing liquid and microbeads. The microbeads can be colorless spherical glass microbeads with good transparency. In some embodiments, to converge the most reflected light to the double-sided photovoltaic 8 backplane, the mesh number of the microbeads is controlled within a preset mesh number range, generally 80 - 200 meshes. If the height of the double-sided photovoltaic 8 mounting bracket 7 is less than A1 times the width of the depression range, A1 is generally 0.5, the mesh number of the microbeads in the reflection convergence layer 4 is the maximum value of the preset mesh number range, that is, 200 meshes. If the height of the double-sided photovoltaic 8 mounting bracket 7 is A2 times the width of the depression range, A2 is generally 0.3, the mesh number of the microbeads in the reflection convergence layer 4 is the minimum value of the preset mesh number range, that is, 80 meshes.

[0031] It should be noted that similar to the first cured soil layer 2, the surface of the undisturbed soil layer 1 around the depression is cured to form the second cured soil layer 5. In some embodiments, to prevent wind erosion, the thickness of the second cured soil layer 5 is controlled within a second preset thickness range, generally within 1 - 3 cm. If the maximum surface wind speed is less than the first wind speed threshold, generally 5 m / s, the curing thickness of the second cured soil layer 5 is the minimum value of the second preset thickness range, that is, 1 cm. If the maximum surface wind speed is greater than the second wind speed threshold, generally 10 m / s, the curing thickness of the second cured soil layer 5 is the maximum value of the second preset thickness range, that is, 3 cm.

[0032] It should be noted that the six-layer windbreak plants are a layer of plants planted on the second solidified soil layer 5. Combined with the second solidified soil layer 5, the purpose of stably improving the power generation efficiency of the bifacial photovoltaic 8 can be achieved. There are generally two types of commonly used windbreak plants 6, one is a non-alkali-tolerant plant, and the other is an alkali-tolerant plant. In order to meet the growth requirements of the plants, the calcium source concentration of the biological solidifying liquid will be controlled within the second preset concentration range, generally 0.5-2 mmol / L. If non-alkali-tolerant plants are used, the calcium source concentration of the biological solidifying liquid in the second solidified soil layer 5 is the minimum value of the second preset concentration range, that is, 0.5 mmol / L. If alkali-tolerant plants are used, the calcium source concentration of the biological solidifying liquid in the second solidified soil layer 5 is the maximum value of the second preset concentration range, that is, 2 mmol / L.

[0033] A depression is formed on the ground surface behind the bifacial photovoltaic 8 in the above structure, and the biological solidification technology is used for transformation in the depression, which improves the light reflectivity, thereby improving the power generation benefit of the bifacial photovoltaic 8. The implementation is simple, which is a new way to improve the power generation benefit of the bifacial photovoltaic 8 that can be applied to practice. And the above structure combines the biological solidification technology with plant solidification for wind prevention and sand fixation, and can achieve the purpose of stably improving the power generation efficiency of the bifacial photovoltaic 8.

[0034] See Figure 6 , Figure 6 which is a construction method of a structure for improving the power generation benefit of the bifacial photovoltaic 8 provided by the embodiment of the present application. The structure here is the above Figure 1 structure, and this method may at least include the following steps: Step 1, excavate on the planned ground to form an injection construction area and fix the shape of the injection construction area through a template. During the curing and maintenance period, inject the biological solidifying liquid into the construction area through the through holes on the template for biological solidification and maintenance to form the first solidified soil layer 2 of the injection construction area, and perform high-temperature shaping on the first solidified soil layer 2 of the injection construction area during the transformation and shaping period; wherein, the curing and maintenance period is the time period corresponding to the temperature range in which the biological activity of the biological solidifying liquid is greater than the third activity threshold, and the rest of the time period is the transformation and shaping period; the injection construction area is a depression in-situ soil layer 1 area with a slope angle greater than the natural angle of repose of the soil layer.

[0035] Step 2, excavate to form a spraying construction area. During the curing and maintenance period, spray the biological solidifying liquid onto the construction area for biological solidification and maintenance to form the first solidified soil layer 2 of the spraying construction area, and perform high-temperature shaping on the first solidified soil layer 2 of the spraying construction area during the transformation and shaping period; wherein, the spraying construction area is a depression in-situ soil layer 1 area with a slope angle less than the natural angle of repose of the soil layer.

[0036] It should be noted that after excavating to form the injection construction area, fix the shape of the transformation surface of the injection construction area through a template, and the template will be removed only after the first solidified soil layer 2 of the spraying construction area is shaped.

[0037] Step 3, during the curing and maintenance period, spray the bio-curing liquid containing pigment additives onto the surface of the first cured soil layer 2 and cure it to form a reflection enhancement layer 3, and perform high-temperature shaping on the reflection enhancement layer 3 during the transformation and shaping period.

[0038] Step 4, during the curing and maintenance period, spray the bio-curing liquid containing microspheres onto the surface of the reflection enhancement layer 3 to form a reflection convergence layer 4, and perform high-temperature shaping on the reflection convergence layer 4 during the transformation and shaping period.

[0039] It should be noted that during the curing and maintenance period, first spray the cementing and curing solution on the surface of the reflection enhancement layer 3, and then spray the bio-curing liquid containing microspheres and cure it.

[0040] Step 5, level the original soil layer 1 around the depression, spray the bio-curing liquid onto the leveled original soil layer 1 and cure it. After spraying, sow the seeds of the windbreak plants 6, and spray a small amount of water every day for curing until germination before the plant seeds germinate.

[0041] It should be noted that before implementing the above method, it is necessary to determine the thickness of the filling construction area, the spraying construction area, the first cured soil layer 2, the second cured soil layer 5, the concentration of pigment additives, the microsphere mesh number, the calcium source concentration, etc. according to some planning parameters, such as wind speed, the type of plants used, the height of the double-sided photovoltaic 8 installation bracket 7, the width of the depression range, the depression slope angle, etc., and prepare the corresponding solutions according to the concentration of pigment additives, the microsphere mesh number, and the calcium source concentration. It is also necessary to determine the curing and maintenance period and the transformation and shaping period according to the relationship between the biological factor activity in the bio-curing liquid and the environmental temperature.

[0042] For example: The bio-curing liquid is catalyzed by 8 mmol / L / min soybean urease and has a high activity in the temperature range of 20 - 40 °C. Therefore, the corresponding time periods of 20 - 40 °C in the early morning and afternoon are set as the curing and maintenance period, and the time periods at noon and at night are set as the transformation and shaping period. Therefore, the pigment additive can be a barium sulfate solution with a concentration of 200 g / L; the width of the depression range is 4 m, and the maximum slope angle is 40°, which is greater than the natural angle of repose of the soil layer of 30°. Therefore, the thickness requirement of the first cured soil layer 2 is 3 cm; the height of the photovoltaic bracket is 1.5 m, which is less than 0.5 times the width of the depression range. Therefore, 200-mesh colorless and transparent spherical glass microspheres are selected; the alkali-tolerant herbaceous plant Iris lactea Pall. is selected. Therefore, the calcium source concentration of the curing liquid is determined to be 1 mmol / L; the surface wind speed is 8 m / s. Therefore, the thickness requirement of the second cured soil layer 5 is 2 cm.

[0043] The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A structure for improving the efficiency of double-sided photovoltaic power generation, characterized in that It includes a depression formed on the ground at the back of the bifacial PV. On the undisturbed soil layer at the bottom of the depression, a first solidified soil layer, a reflection enhancement layer, and a reflection convergence layer are sequentially arranged from bottom to top. The light reflected by the reflection enhancement layer is converged to the bifacial PV backplane through the reflection convergence layer. On the undisturbed soil layer around the depression, a second solidified soil layer and a windbreak plant layer are sequentially arranged from bottom to top. Among them, both the first solidified soil layer and the second solidified soil layer are soil layers solidified by a biological solidifying liquid. The reflection enhancement layer is a pigment coating solidified by a biological solidifying liquid, and the reflection convergence layer is a microsphere layer solidified by a biological solidifying liquid.

2. The structure according to claim 1, wherein If the maximum slope angle of the depression is greater than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer is the maximum value within the first preset thickness range. Among them, the first preset thickness range is the range for maintaining the stability of the soil layer. If the maximum slope angle of the depression is less than the natural angle of repose of the soil layer, the thickness of the first solidified soil layer is the minimum value within the first preset thickness range.

3. The structure according to claim 1, wherein If the biological activity of the biological solidifying liquid of the reflection enhancement layer is higher than the first activity threshold, the concentration of the pigment additive in the reflection enhancement layer is the maximum value within the first preset concentration range. Among them, within the first preset concentration range, the color of the pigment additive in the reflection enhancement layer is not affected by the color of the biological solidifying liquid itself. If the biological activity of the biological solidifying liquid of the reflection enhancement layer is lower than the second activity threshold, the concentration of the pigment additive in the reflection enhancement layer is the minimum value within the first preset concentration range. Among them, the second activity threshold is less than the first activity threshold.

4. The structure according to claim 1, wherein, If the height of the bifacial PV mounting bracket is less than A1 times the width of the depression range, the mesh number of the microspheres in the reflection convergence layer is the maximum value within the preset mesh number range. Among them, within the preset mesh number range, the microspheres can converge the most reflected light to the bifacial PV backplane. If the height of the bifacial PV mounting bracket is A2 times the width of the depression range, the mesh number of the microspheres in the reflection convergence layer is the minimum value within the preset mesh number range. Among them, A2 and A1 are preset values, and A2 is less than A1.

5. The structure according to any one of claims 1 to 4, characterized in that, The geometric centers of all layers within the depression are located in the central area of the bifacial PV backplane; the slope angle of any position of each layer within the depression with respect to the horizontal plane does not exceed the angle threshold.

6. The structure according to claim 1, wherein If the maximum surface wind speed is less than the first wind speed threshold, the solidification thickness of the second solidified soil layer is the minimum value within the second preset thickness range. If the maximum surface wind speed is greater than the second wind speed threshold, the solidification thickness of the second solidified soil layer is the maximum value within the second preset thickness range. Among them, the second preset thickness range is the range for preventing wind erosion, and the second wind speed threshold is greater than the first wind speed threshold.

7. The structure according to claim 1 or 6, characterized in that, If the plants in the windbreak plant layer are non-alkali-tolerant plants, the calcium source concentration of the biological solidifying liquid of the second solidified soil layer is the minimum value within the second preset concentration range; if the plants in the windbreak plant layer are alkali-tolerant plants, the calcium source concentration of the biological solidifying liquid of the second solidified soil layer is the maximum value within the second preset concentration range. Among them, the second preset concentration range is the range for meeting the growth requirements of the plants.

8. A construction method for a structure that enhances the efficiency of double-sided photovoltaic power generation, characterized in that, The structure is the structure described in any one of claims 1 to 7, and the method includes: An injection construction area is excavated on the planned ground, and the shape of the injection construction area is fixed by a formwork. During the curing and maintenance period, the biological curing liquid is injected into the construction area through the through holes on the formwork to form the first cured soil layer of the injection construction area, and the first cured soil layer of the injection construction area is subjected to high-temperature shaping during the transformation and shaping period; wherein, the curing and maintenance period is the time period corresponding to the temperature range in which the biological activity of the biological curing liquid is greater than the third activity threshold, and the remaining period is the transformation and shaping period; the injection construction area is a sunken original soil layer area with a slope angle greater than the natural angle of repose of the soil layer. A spraying construction area is excavated. During the curing and maintenance period, the biological curing liquid is sprayed onto the construction area to form the first cured soil layer of the spraying construction area, and the first cured soil layer of the spraying construction area is subjected to high-temperature shaping during the transformation and shaping period; wherein, the spraying construction area is a sunken original soil layer area with a slope angle less than the natural angle of repose of the soil layer. During the curing and maintenance period, the biological curing liquid containing a pigment additive is sprayed onto the surface of the first cured soil layer to form a reflection enhancement layer, and the reflection enhancement layer is subjected to high-temperature shaping during the transformation and shaping period. During the curing and maintenance period, the biological curing liquid containing microbeads is sprayed onto the surface of the reflection enhancement layer to form a reflection convergence layer, and the reflection convergence layer is subjected to high-temperature shaping during the transformation and shaping period. Level the original soil layer around the depression, spray the biological curing liquid onto the leveled original soil layer, and sow windproof plant seeds after the spraying is completed.

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