KR101150893B1 - Vegetation Method of Slope with Acidic Water using Vegetation Base Attaching and Soil Covering of Soil Including Limestone Powder and Organic Compounds - Google Patents

Abstract

The present invention relates to a vegetation greening method of the slope of the acid drainage generation slope using the soil cover and the installation of vegetation base material added to the limestone and organic material, and more particularly, in the soil where acidic drainage occurs, neutralizing the acidified soil To form a cover layer composed of limestone powder to minimize vegetation damage from acidic drainage and a home compost to help vegetation growth on the slope of the construction, and prevent the cover layer from being lost by rainfall. Covering the top of the cover layer with vegetation base material to help the growth of soil, protect the vegetation from acid drainage on the slope where acid drainage occurs, and implement the effective vegetation coating Of Vegetation Greening of Acid Drainage Slope Using It is about.

Vegetation, Limestone, Organics, Acid Drainage

Description

Vegetation Method of Slope with Acidic Water using Vegetation Base Attaching and Soil Covering of Soil Including Limestone Powder and Organic Compounds}

The present invention relates to a vegetation coating method that can prevent vegetation damage by acidic drainage.

Acid drainage is produced when sulfide minerals, which have been stable underground, are oxidized by being exposed to the surface by mining and ground excavation in the construction process. Various kinds of sulfide minerals exist according to the production environment. Pyrite (FeS ₂ ) is the most common sulfide mineral and is known as the main mineral of acid drainage. The generation of acid drainage by oxidation of pyrite is as follows.

In Korea, more than 1000 coal, metal and leadstone mines are scattered all over the country, and Okcheon, Pyeongan Formation, Tertiary Sedimentary Rocks, Mesozoic Volcanic Rocks, which are highly probable rocks that are exposed to the surface during the earth excavation and generate acid drainage. Ryu, hydrothermal altered rocks are scattered throughout the country. Slope vegetation greening in abandoned mines and construction sites is widely used for slope stability, prevention of pollution spread, and ecological restoration. The slopes of acid drainage from abandoned mines and construction sites have very unfavorable conditions for vegetation growth due to acidification of soil by acid drainage and high concentrations of harmful elements (heavy metals, AL, Mn), low clay content and low nutrient content. Frequently cases of coating failure occur. In order to protect vegetation from acid drainage on the slope where acidic drainage is generated and to ensure successful vegetation coating, vegetation coating is performed after covering soil with high quality soil over 50cm on slope. General soils used as cover material for slopes have low neutralization ability against acid drainage, and when a large amount of acid drainage occurs in the bottom of the cover layer, acid drainage increases due to capillary phenomenon, causing damage to vegetation. In addition, thick cover soils on slopes are likely to cause soil loss due to rainfall and impair stability. A large amount of soil is required to form a thick cover layer, and environmental damage is inevitable in the process of soil acquisition. Therefore, it is required to develop a new concept of vegetation restoration method and to apply the site to prevent vegetation damage by acid drainage and to minimize the environmental damage generated in the soil collection process.

The present invention has been made to solve the above problems, the object of the present invention is as follows. The existing vegetation coating method of slopes where acidic drainage is generated is formed with 50 ~ 100cm thick cover layer and vegetation coating to protect vegetation from acidic drainage. The thick cover layer formed on the inclined surface may cause slope loss due to soil loss and loss due to rainwater. It is necessary to secure a large amount of soil for the construction of a thick cover layer, which entails additional costs for environmental damage and recovery to secure cover materials. Therefore, in order to solve the above problems, the vegetation of acid drainage generation slope using the soil cover and the installation of vegetation base material of soil with added limestone and organic material, which can simultaneously minimize the thickness of the cover layer and prevent soil loss from the cover layer. It is to provide a greening method.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

The present invention as a means for solving the above problems, the step of collecting and analyzing the soil and rock on the slope of the construction target (S100); After the step (S100), calculating the limestone demand for the neutralization of the slope of the construction target (S110); After the step (S110), the step of determining the thickness of the cover layer to be applied to the slope of the construction target (S120); After the step (S120), the step of cleaning the slope of the construction target (S130); After the step (S130), step (S140) to form a cover layer containing limestone on the slope to be built; After the step (S140), measuring the inclination of the slope of the construction target (S150); After the step (S150), if the inclination is more than a predetermined angle, the step of fixing the fixed net on the top cover layer (S160); After the step (S160), mounting a vegetation base material on the cover layer (S170); And a control unit.

Further, in step S110 to calculate the total amount of limestone required to calculate the limestone required for the neutralization of acidic drainage generated from the rock of the slope to be constructed and the amount of limestone required to neutralize the soil of the slope to be constructed, respectively It is characterized by.

In addition, the calculation of the required amount of limestone for the neutralization of acidic drainage to be generated from the rock, the step of crushing the rock in the inclined surface into a powder state (S10); After the step (S10), the step of adding 10% hydrogen peroxide to the rock powder 2g until the acid (H ⁺ ) reaction is completed (S11); After the step (S11), the step of adding distilled water so that the reaction mixture of the completed rock powder and hydrogen peroxide is 200ml (S12); After the step (S12), adding the 0.01N or 0.1N sodium hydroxide until the mixed solution is PH 7 to calculate the amount of acid generated during the reaction of the powdered rock and hydrogen peroxide through the first formula (S13) )Wow;

[Formula 1]

Acid (H ⁺ ) generation amount (N / kg) of rock = m × NaOH solution input (ml) × 0.5

(Here, m is substituted with 0.01 or 0.1 depending on the type of NaOH solution.)

After the step (S13), calculating the amount of limestone required for neutralization through the amount of acid generated through the second formula (S14);

[Formula 2]

A = 0.5 × 100 × Rock acid (H ⁺ ) generation amount (N / kg) = 25 × m × NaOH solution input (ml)

Where A is the amount of limestone required to neutralize the acid (H ⁺ ) generated from the rock (g / kg), and m is 0.01 or 0.1, depending on the type of NaOH solution. .

In addition, the calculation of the amount of limestone required for the soil neutralization of the slope to be constructed, after air drying the soil collected from the slope to be constructed, preparing a soil sample having a particle size of 2mm (S20); After the step (S20), by mixing the soil sample 20g and 200ml 0.01M potassium chloride solution to measure the pH of the mixed solution (S21); After the step (S21), adding 0.01N or 0.1N sodium hydroxide until the mixed solution is PH 7, and recording the amount of sodium hydroxide solution (S22); After the step (S22), calculating the required amount of limestone for the neutralization of the acidic soil using the third formula (S23);

[3rd meal]

B = 5 × m × NaOH solution volume (ml)

Wherein B is limestone required for soil neutralization (g / kg), m is 0.01 or 0.1 is substituted depending on the type of NaOH solution.

In addition, the step S120 is characterized in that the thickness of the cover layer to be applied to the surface of the slope to be applied is determined by the soil content and the type of coating vegetation of the surface to be sloped.

In addition, when the soil content of the inclined surface of the construction is more than 20% or the soil content is less than 20% and the cover vegetation is herbaceous, the cover layer containing limestone and organic matter is formed to a thickness of 10cm, the soil content is less than 20% When the cover vegetation is wood, it is characterized in that the cover layer containing limestone and organic matter is formed to a thickness of 20 to 50cm.

In addition, the step S130, characterized in that after applying the cover layer formed by mixing limestone powder and maturity compost in the soil on the slope of the construction target.

In addition, in the step S140, the total limestone content contained in the cover layer is characterized in that calculated by the fourth formula.

[Fourth meal]

Limestone Content (g / kg) = {((A × C) + (B × C ')) / 100} × D

Where A is the amount of lime required for neutralizing acidic drainage from the rock (g / kg), B is the amount of limestone for neutralizing the soil (g / kg), C is the rock content (%), and C 'is the soil content ( %), D represents specific gravity, cover layer thickness, and vegetation type factor of cover layer and sloped material.)

In addition, the vegetation base material is made of a mixture of fertilizer and seeds in soil 55%, ripening compost 30%, limestone powder 10%, coconut fiber 2%, CMC 2%, to be attached to the top layer of 0.5-1cm thick It features.

As described above, the present invention can minimize the thickness of the cover layer applied to the slope of the acid drainage in order to protect the vegetation from acid drainage, there is an effect that can prevent the soil loss of the cover layer due to rainfall. .

Before describing the various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, referring to FIG. 1 or FIG. 2, the vegetation greening method of acid drainage generation slope using the soil cover and the vegetation base material mounting of the limestone and the organic material added according to the preferred embodiment of the present invention will be described in detail.

The method according to the present invention is a 10 to 50 cm thick cover layer (10) composition and a cover layer (10) using limestone powder, which is an acid drainage neutralizer, and soil added with ripening compost for enhancing nutrient supply and moisturizing power necessary for vegetative growth. It is composed of a highly viscous vegetation base material 30 that can prevent the erosion and loss of the cover layer 10 from rainfall without adhered to the surface.

(1) determination of limestone content in cover materials

The cover layer 10 minimizes vegetation damage from acid drainage by neutralizing acid drainage and acidified soil generated at the bottom, and poor vegetation growth environment (low clay content, low moisturizing power) of sloped soil (G). Low nutrient content) to improve vegetation growth. The cover material contains limestone powder with high neutralization ability against acid drainage and poorly prepared compost with the ability to supply the moisture and nutrients necessary for vegetation growth. Limestone contained in the cover layer 10 is dissolved and penetrated to neutralize the acid drainage and acid soil generated from the bottom.

The limestone content of the cover material is determined by the ratio of rock to soil on the slope, the amount of limestone required for neutralization of acid drainage from the rock, the amount of lime required for neutralization of the soil, the thickness of the cover layer 10, and the type of vegetation. Limestone content of the cover material can be calculated using the following formula.

[Fourth meal]

Limestone Content (g / kg) = {((A × C) + (B × C ')) / 100} × D

Where A is the amount of lime required for neutralizing acidic drainage from the rock (g / kg), B is the amount of limestone for neutralizing the soil (g / kg), C is the rock content (%), and C 'is the soil content ( %), D represents the specific gravity of the cover layer (10) and slope material, cover layer (10) thickness, vegetation type factor.)

-Acid drainage and limestone demand of rocks

Acid drainage of sloped rock is made into powder by crushing the rock (step S10), and add 2 g of rock powder to a 250 ml beaker and add 10% hydrogen peroxide (H ₂ O ₂ ) little by little until the reaction is completed (step S11). ). After the reaction is completed, distilled water is added so that the solution becomes 200 ml (step S12). The 200 ml solution was titrated to pH 7 using 0.01 N or 0.1 N NaOH solution to calculate the amount of acid (H ⁺ ) generated during the reaction between rock and hydrogen peroxide as shown in the following formula (step S13). -> (Steps S10 to S13 are performed sequentially.)

[Formula 1]

Acid (H ⁺ ) generation amount (N / kg) of rock = m × NaOH solution input (ml) × 0.5

Here, m may be substituted with 0.01 or 0.1 depending on the type of NaOH solution. Limestone (CaCO ₃ ) 1M can neutralize 2N H ⁺ .

CaCO ₃ + 2H ⁺ ---> Ca ^{2 +} + H ₂ O + CO ₂

Therefore, using the following formula, it is possible to calculate the required amount of limestone (molecular weight: 100 g) necessary for neutralization of generated H ⁺ .

[Formula 2]

A = 0.5 × 100 × Rock acid (H ⁺ ) generation amount (N / kg) = 25 × m × NaOH solution input (ml)

(Where A is the limestone requirement (g / kg) required to neutralize the acid (H ⁺ ) generated from the rock, and m is 0.01 or 0.1, depending on the type of NaOH solution.)

-Soil acidity and limestone requirements

The soil collected from the slope to be constructed is air-dried and the sample (soil) having a particle size of 2 mm or less is collected and used for use (step S20). After 20g of the soil and 200ml of 0.01M KCl solution for 30 minutes to measure the pH of the solution (step S21). After pH measurement, 1 ml of 0.01N or 0.1N NaOH solution was added by 1 ml and reacted for 30 minutes, and then the pH of the solution was measured (step S22). Repeat this process until solution pH7 and record the amount of NaOH solution added. Calculate the amount of limestone required for neutralization of the acidic soil using the following Equation 3 (step S23) .---> (Step S20 to step S23)

[3rd meal]

B = 5 × m × NaOH solution volume (ml)

(Where B is the limestone requirement for soil neutralization (g / kg).)

In the above Formula 3, m may be substituted with 0.01 or 0.1 depending on the type of NaOH solution.

Limestone content of the cover material is determined by considering the limestone content of the product when using limestone for the neutralization of acidic drainage from the rock and neutralization of acidic soil. In addition, the limestone content of the cover layer 10 necessary for neutralizing acid drainage and neutralizing the soil should finally consider the specific gravity, vegetation type, and cover layer thickness 10 of the cover layer 10 and the slope-free material.

(2) Organic matter content of cover material

Organic matter is known to provide nutrients necessary for vegetation growth because it promotes the formation and moisturizing of soil and contains a large amount of nitrogen, phosphorus and potassium. In addition, soil organic matter consumes oxygen during decomposition by microorganisms.

Oxygen consumption due to decomposition of organic matter in the cover layer 10 removes the dissolved oxygen of rainwater that penetrates downward through the cover layer 10. Removal of dissolved oxygen of rainwater by organic matters can be expected to reduce the oxidation of sulfide minerals present in the lower portion to suppress the occurrence of acidic drainage.

Soil organic matters may have good effects on vegetation growth and soil properties, but gas and heat generated by corrosion of organic matters are likely to act as obstacles to vegetation growth. In addition, when an excessive amount of organic material is included in the cover layer 10 formed on the slope, it may adversely affect the stability of the cover layer 10.

Therefore, the content of the appropriate organic material that can promote vegetation growth and secure the stability of the cover layer 10 is estimated to be about 10%.

(3) cover layer (10) of  thickness

The thickness of the cover layer 10 is determined by the soil content and the type of cover vegetation of the slope surface to be constructed. When the soil vegetation has a physical vegetation growth base of more than 20%, the cover layer 10 containing a sufficient amount of limestone and organic matter to neutralize the acid drainage and acid soil of the vegetation root depth is about 10 cm thick. It is good to make it into.

On the other hand, if the soil content is less than 20% and the physical vegetation growth base is poor, the thickness is varied depending on the type of cover vegetation. If the cover vegetation is herbaceous, cover it with soil containing limestone and organic matter, about 10cm thick. If the cover vegetation is woody, cover it with 20 ~ 50cm thick.

If the vegetation base is poor with soil content of less than 20%, covering and compacting the surface with cover material will make the cover material flow down to create a vegetation base about twice the initial thickness.

Therefore, if the covered vegetation is herbaceous, 10cm covering about 20cm of vegetation base is formed, and in the case of 20 ~ 50cm covering vegetation, about 40-100cm vegetation base is formed.

(4) cover layer 10 to prevent loss Vegetation Foundation Mounting

The cover layer 10 formed for the vegetation base, acid drainage, and acid soil neutralization on the slope to be constructed is easily lost by rainfall. Therefore, the vegetation base material 30 to be formed on the top of the cover layer 10 should be made of a material suitable for preventing the loss of the cover layer 10 due to rainfall and for the germination and growth of vegetation. In addition, since acidic drainage-generating rocks and acidic soils exist in the bottom of the cover layer 10, the acidic capillary water rising to the surface in the dry season should be neutralized to protect the vegetation.

Therefore, the vegetation base material 30 is composed of about 55% of good soil, 30% of mature compost, 10% of limestone powder, 2% of coconut fiber, 2% of CMC (carboxy methyl cellulose, viscosity increasing agent), fertilizer and seeds. Vegetation base material (30) layer is taken to the top of the cover layer 10 to a thickness of 0.5 ~ 1cm using a high pressure attachment.

When the slope (α) of the inclined surface is 20 ° or more, there is a high possibility that the vegetation base material 30 mounted on the top of the cover layer 10 is lost, using a fixing means such as a coconut net on the top of the cover layer 10 using a fixing means ( 20) and the vegetation base material 30 is attached to the surface of the cover layer (10). (Anchor pin is used as the fixing means, but a plurality of constituent means such as the anchor pin can be mutually fixed. Naturally, any means can be changed to various means by the user's choice.)

Hereinafter will be described the application procedure, method and embodiment of the method of the preferred embodiment of the present invention having the configuration and structure as described above.

-Order and Method of Application of Public Law

(1) Collect and analyze soil and rock from slopes to be constructed (S100 step).

(2) Calculate the amount of limestone required for neutralizing the soil and acid drainage from the rock (step S110).

 (2) Determine the thickness of the cover layer 10 in consideration of the vegetation type and the soil content of the slope. (S120 step)

 (3) Clean up the slope to ensure the stability of the slope and to prevent safety accidents (step S130).

 (4) cover the soil with limestone powder and composting compost, so that the soil flows down the large voids to form a vegetation base, and compacted to minimize the surface loss of the cover layer (10) cover layer (10) (S140 step)

 (5) If the slope (α) of the inclined surface is 20 ° or more, and there is a fear that the vegetation base material 30 to be mounted thereafter may be lost, the coconut net is fixed to the surface of the cover layer 10 using ancapine. )

 (6) Mount the vegetation base material (30) containing soil, ripening compost, limestone powder, coconut fiber, CMC, fertilizer and seeds on the surface of the cover layer (10) or coconut net to a thickness of 0.5 to 1 cm using a high pressure attacher. (Step S150)

- Example

1. Target slope

Vegetation coating using 15cm cover and seed spraying was attempted. However, the vegetation cover of slopes of about 25 ° was attempted for vegetation coating failed due to acid drainage and loss of cover layer 10. The slope was mixed with soil and rocks up to 20cm deep and only 20cm or less existed.

2. Determination of Limestone Content and Thickness of the Covering Layer 10

Slope is the top 20cm configured by a weight ratio of 30% soil and 70% rock and specific gravity was characterized by the 2.1g / cm ^3. The analysis showed that the limestone requirement for neutralization of acidic drainage from rocks was 50.2 g / kg. In addition, the pH measured after reacting 200ml of 0.01M KCl solution and 20g soil sample was 3, and the limestone requirement for neutralization of soil was 20.5g / kg.

For the vegetation to be covered, we selected sheepgrass (ryegrass), and the depth of the vegetation depth (within 30cm) and the thickness of the existing soil and rock mixed layer was about 20cm, so that the thickness of the cover layer 10 was about 10cm. In order to create a 30 cm vegetation base layer (soil and rock mix + cover layer 10), the cover layer 10 should contain enough limestone to neutralize the layers of the lower soil and rock mix. Assuming the specific gravity of the cover layer 10 is 1.7, the limestone content of the cover layer 10 was calculated based on the amount of limestone required to neutralize the soil and the acid drainage expected to occur in the mixed soil and rock layers. The limestone content of the cover layer 10 was 102.02 g / kg [= (50.2 × 0.7 + 20.5 × 0.3) × (2.1 ÷ 1.7) × 2].

3. Composition of the cover layer 10

Forest topsoil was collected from nearby Yasan, and 10.2% of limestone powder and 10% of boiled compost were added and stirred to mix evenly. The prepared cover material was covered on the inclined surface and compacted so as not to flow.

4. Installation of vegetation foundation (30)

The slope of the test subject is a steep slope, so that the vegetation base material 30 may flow down, and the coconut net was fixed to the cover layer 10 surface using ancapine to prevent loss of the vegetation base material 30. Soil 55%, ripened compost 30%, limestone powder 10%, coconut fiber 2%, CMC 2%, compound fertilizer 1%, sheep grass seeds were mixed and mounted on the surface of the cover layer (10) using a high pressure attacher.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1 is a cross-sectional view of an embodiment showing a vegetation greening method according to the present invention.

Figure 2 is a flow chart of one embodiment showing a vegetation greening method according to the present invention.

<Indication of symbols for main parts of drawing>

10: cover layer 20: fixed net

30: Vegetation base material G: slope for construction

Claims (11)

(S100) collecting and analyzing soil and rock of the slope to be constructed (G); Calculating a limestone demand for neutralization of the construction target slope (S) (S110); Determining a thickness of the cover layer 10 to be applied to the target slope B; Arranging the slope to be constructed (G) (S130); (S140) forming a cover layer 10 containing limestone on the inclined surface G; Measuring the inclination α of the construction target slope G (S150); If the inclination (α) is 20 ° or more, the step of fixing the fixed net 20 to the top surface of the cover layer (10) (S160); Attaching the vegetation base material 30 to the cover layer 10 (S170); In the step (S140), the acid drainage generation slope using the soil cover and vegetation base material mounting of the limestone and the soil to which the organic material is added, characterized in that the total limestone content contained in the cover layer 10 is calculated by the fourth equation. Vegetation greening method. [Fourth meal] Limestone Content (g / kg) = {((A × C) + (B × C ')) / 100} × D Where A is the amount of lime required for neutralizing acidic drainage from the rock (g / kg), B is the amount of limestone for neutralizing the soil (g / kg), C is the rock content (%), and C 'is the soil content ( %), D represents specific gravity, cover layer thickness (10), vegetation type factor of the cover layer (10) and the slope surface (G) material to be constructed.) The method of claim 1, In the step (S110) To calculate the total amount of limestone calculated by calculating the limestone demand required for neutralization of acidic drainage from the rock of the slope slope (G) and the limestone requirement for neutralizing the soil of the slope slope (G). Vegetation greening method of the slope of the acid drainage generation slope using the soil cover and the mounting of vegetation base material of the soil to which limestone and organic substances are added. 3. The method of claim 2, Calculation of limestone demand for neutralization of acidic drainage from rock is (S10) crushing the rock in the construction target slope (G) into a powder state; After the step (S10), the step of adding 10% hydrogen peroxide (H ₂ O ₂ ) to the rock powder 2g until the acid (H ⁺ ) reaction is completed (S11); After the step (S11), the step of adding distilled water so that the reaction mixture of the completed rock powder and hydrogen peroxide is 200ml (S12); After the step (S12), the amount of acid generated during the reaction between the powdered rock and hydrogen peroxide by adding 0.01N or 0.1N sodium hydroxide (NaOH) solution until the mixture solution is PH 7 through the first formula Step (S13); [Formula 1] Acid (H ⁺ ) generation amount (N / kg) of rock = m × NaOH solution input (ml) × 0.5 (Wherein m is substituted with 0.01 or 0.1 depending on the type of NaOH solution.) After the step (S13), calculating the amount of limestone required for neutralization through the amount of acid generated through the second formula (S14); [Formula 2] A = 0.5 × 100 × amount of acid (H ⁺ ) in rocks (N / kg) = 25 × m × NaOH solution input (ml) (Where A is the limestone requirement (g / kg) required to neutralize the acid (H ⁺ ) generated from the rock, and m is 0.01 or 0.1, depending on the type of NaOH solution.) Vegetation greening method of the acid drainage generation slope using the soil cover and the mounting of the vegetation base material of the limestone and the soil to which the organic substance is added. 3. The method of claim 2, The limestone demand calculation necessary for the soil neutralization of the slope to be constructed (G), After air drying the soil collected from the construction slope slope (G), preparing a soil sample having a particle size of 2mm (S20); After the step (S20), by mixing the soil sample 20g and 0.01ml potassium chloride (KCl) solution 200ml to measure the pH of the mixed solution (S21); After the step (S21), adding the 0.01N or 0.1N sodium hydroxide (NaOH) solution until the mixed solution is PH 7, and recording the amount of sodium hydroxide solution (S22); After the step (S22), calculating the required amount of limestone for the neutralization of the acidic soil using the third formula (S23); [3rd meal] B = 5 × m × NaOH solution volume (ml) (Where B is the amount of limestone required for soil neutralization (g / kg), and m is 0.01 or 0.1, depending on the type of NaOH solution) Vegetation greening method of the acid drainage generation slope using the soil cover and the mounting of the vegetation base material of the limestone and the soil to which the organic substance is added. The method of claim 1, In the step (S120) The thickness of the soil layer 10 to be applied to the slope to be applied (G) is determined by the soil content of the slope to be applied (G) and the type of coating vegetation of the soil to which the limestone and the organic material are added. Vegetation greening of acid drainage-generated slope using cover and vegetation foundation. The method of claim 5, When the soil content of the inclined surface (G) is 20% or more, or the soil content is less than 20% and the cover vegetation is herbaceous, characterized in that to form a 10 cm thick covering layer 10 containing limestone and organic matter Vegetation reclamation of slopes with acid drainage using limestone and organic matter-covered soil cover and vegetation foundation. The method of claim 5, When the soil content of the inclined surface (G) is less than 20% and the cover vegetation is wood, limestone and organic material are added, characterized in that the covering layer 10 containing limestone and organic matter is formed to a thickness of 20 to 50 cm. Vegetation greening method of slopes of acid drainage using soil cover and vegetation foundation of soils. The method of claim 1, In the step (S130), Covering the soil and vegetation base material of the soil to which limestone and the organic substance are added, characterized in that the soil layer (10) formed by mixing limestone powder and maturity compost on the soil is applied to the slope of the construction target (G). Vegetation greening method of inclined cotton using acid drainage. The method of claim 1, The vegetation base material (30) is made of a mixture of fertilizer and seeds in the compost 30%, limestone powder 10%, coconut fiber 2%, CMC 2%, the 0.5 to 1cm thick on the top surface of the cover layer (10) Vegetation greening method of the slope of the acid drainage generation slope using the soil cover and the mounting of vegetation base material of the soil to which limestone and organic substances are added. delete delete

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