Multifunctional sand gum crusting powder as well as preparation and application methods thereof

Abstract

The invention discloses multifunctional sand gum crusting powder as well as a preparation method and an application method thereof, and belongs to the technical field of sand stabilization, and the multifunctional sand gum crusting powder is obtained by taking flowing aeolian sandy soil as a basic material, respectively adding flaxseed gum powder, high-molecular water-absorbent resin powder and attapulgite powder, and fully and uniformly mixing. The preparation method of the multifunctional sand gum crusting powder is simple and easy to operate, does not need special equipment, is suitable for field construction site preparation, uses local basic raw materials, is cheap and easy to obtain, is low in cost, is less in sprayed water, is convenient for field construction, is obvious in sand stabilization effect, and does not affect plant growth. The sand gum crusting powder disclosed by the invention has the characteristics of wind erosion resistance, water retention and fertilizer retention, and after sand stabilization and afforestation, the sand gum crusting powder is scattered on the surface of the flowing sand, so that plant root systems are prevented from being exposed and dead due to wind erosion, and the purpose of comprehensively treating the flowing sand at low cost under a rain-fed condition is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sand fixation, and in particular to a multifunctional sand cementing crust powder and a preparation and application method thereof. Background Art

[0002] Fixing mobile sand dunes is the most important part of sand prevention and control engineering construction. On the one hand, mobile sand dunes are highly mobile and harmful, so they must be effectively managed and controlled. On the other hand, the water content in mobile sand dunes is relatively good, but wind erosion is serious. It is easy to survive but difficult to preserve when establishing artificial vegetation. Therefore, taking effective technical measures to control wind erosion in mobile sand and effectively reducing the depth of wind erosion concave surfaces between sand barriers is the key link in establishing vegetation and controlling mobile hazards.

[0003] At present, the sand crusts formed after the mobile sand is fixed mainly include biological crusts, physical crusts and crusts formed by spraying water-soluble sand fixation agents. However, there is no method of using mobile sand soil to add plant glue and other ingredients to form a solid mixture and directly spreading it on the mobile sand to form a sand glue crust.

[0004] Generally, sand fixation agents refer to organic and inorganic, natural and artificial colloidal substances that are sprayed on the surface of quicksand and penetrate into the gaps between sand layers. After solidification, they can form a protective shell on the sand surface to prevent airflow from directly blowing on the loose sand surface, and play a role in preventing surface wind erosion, fixing quicksand, and preventing the movement of sand dunes, so as to achieve the technical measures of controlling and improving the sand-damaged environment and improving the productivity of sandy land. The method of spraying sand fixation with chemical materials is quick to take effect, and sand fixation agents almost all adopt the technical route of chemical synthesis or modification (non-water-soluble) of chemical synthesis, and their production process is complicated, which limits the application of chemical sand fixation materials.

[0005] Therefore, providing a multifunctional sand-fixing agent of sand-cementing shell powder, which is convenient for field construction, has obvious sand-fixing effect and does not affect plant growth, and a preparation and application method thereof is a technical problem that technical personnel in the field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides a multifunctional sand cementing powder capable of controlling wind erosion hazards of mobile sand. The sand cementing powder of the present invention is designed to address many disadvantages such as high cost, complex production process and environmental problems of high molecular polymer sand fixation agents produced by chemical synthesis or modification technology.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] A multifunctional sand cement crust powder, composed of the following raw materials:

[0009] Flowing sandy soil, sesame seed gum, high molecular water-absorbing resin and attapulgite powder;

[0010] Wherein, the mass ratio of the mobile sandy soil, sesame seed gum, high molecular water-absorbing resin and attapulgite powder is 1000:2.5-4:1-1.5:1.

[0011] The scheme of the present invention embodies the principle of using sand to fix sand. The present invention has the advantages of local materials, cheap and easy to obtain. Among them, the natural sesame seed gum powder has suitable viscosity and is a new food additive. It contains 12.13% rhamnose, 6.83% arabinose, 4.3% fucose, 12.7% xylose, 3.75% mannose, 10.15% glucose, and 15.3% galactose. The polymer water-absorbing resin powder can be used as a water-retaining agent, which is beneficial to the water preservation on the surface of the quicksand, so that a small amount of water can play the cementing role of the sesame seed gum powder and quickly form a sand cementing crust on the surface of the quicksand to resist wind erosion. Attapulgite powder, also known as palygorskite, is a clay mineral with a layered chain structure, containing water-rich magnesium aluminum silicate, with unusual colloid and adsorption properties, adsorbing mineral nutrients, and strong fertilizer retention ability.

[0012] Furthermore, the sesame seed gum and the polymer water-absorbing resin are both in powder form.

[0013] Furthermore, the polymer water-absorbing resin is sodium polyacrylate.

[0014] The present invention also provides a method for preparing the multifunctional sand cement crusting powder, comprising the following steps:

[0015] (1) Weigh the raw materials according to the above mass ratio;

[0016] (2) Mix the mobile sandy soil, sesame seed gum, high molecular weight water-absorbing resin and attapulgite powder, and stir evenly to obtain a multifunctional sand gum crusting powder.

[0017] The whole process of the invention can be completed on site in the field, or in a room with abundant flowing sand and soil, and the preparation process is pollution-free.

[0018] The present invention also provides an application method of the multifunctional sand cement crusting powder, comprising the following steps:

[0019] After rainfall, evenly spread the sand-crusting powder on the surface of the mobile sand;

[0020] Or, when there is no rainfall, first sprinkle the sand cement crust powder evenly on the surface of the mobile sand, and then use a sprayer to spray water to moisten the sand cement crust powder.

[0021] During use, the sand-binding crust powder can be evenly spread according to the undulating conditions of the surface of the quicksand, and it can cover the quicksand surface in strips or completely.

[0022] Furthermore, the multifunctional sand cementing crust powder is used in an amount of 2000-3000 kg per mu.

[0023] The scheme of the present invention can also be combined with the requirements of biological sand fixation technology for afforestation. The afforestation method can be seedling afforestation, cutting afforestation, container seedling afforestation or rainy season sowing afforestation. The afforestation density, plant species selection, seedling requirements, etc. are implemented with reference to the corresponding technical standards.

[0024] The hardness of the sand-cement crust formed by the sand-cement crust powder of the present invention reaches 0.25-0.44 kg / cm in 2-3 days. 2 The thickness of the sand cement crust is 0.36-0.51cm, and the cement sand crust has good water infiltration characteristics and super strong resistance to wind erosion. When the cement sand crust encounters water, the water can infiltrate quickly. Therefore, the thickness of the cement sand crust increases with the increase of unit area usage, its resistance to wind erosion is correspondingly improved, and the sand fixation effect is better.

[0025] By adopting the scheme of the present invention, spreading the multifunctional sand cementing crust powder after sand fixation and afforestation will not cause root exposure and death due to wind erosion, thereby achieving the purpose of low-cost comprehensive management of mobile sand land under rain-fed conditions, and embodies the characteristics of applicability, simplicity, cheapness, high efficiency and durability.

[0026] The beneficial effects of the present invention are: the preparation method of the present invention is simple and easy to operate, does not require special equipment, is suitable for preparation on site in the field, the basic raw materials are locally available, cheap and easy to obtain, low cost, less water spraying, convenient field construction, obvious sand fixation effect, and does not affect plant growth. The sand cement crust powder prepared by the present invention has the characteristics of wind erosion resistance, water retention, and fertilizer retention. After sand fixation and afforestation, the use of the sand cement crust powder will not cause the plant roots to be exposed and die due to wind erosion, achieving the purpose of low-cost comprehensive management of mobile sand land under rain-fed conditions, and embodies the characteristics of simple preparation of the sand cement crust powder, easy availability of basic raw materials, low cost, less water spraying, convenient field construction, and sand fixation with sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The effect of different dosages on the hardness of sand cement crust;

[0028] Figure 2 The effect of different dosages on the thickness of sand cement crust;

[0029] Figure 3 This is a picture showing the effect of sand cement crusting after using sand cement crusting powder. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] (1) weighing raw materials according to the mass ratio of mobile sandy soil, sesame seed gum powder, polymer water-absorbing resin powder and attapulgite powder of 1000:4:1.5:1;

[0033] (2) Mix the mobile sandy soil, sesame seed gum, high molecular weight water-absorbing resin and attapulgite powder, and stir evenly to obtain a multifunctional sand gum crusting powder.

[0034] Example 2

[0035] (1) weighing raw materials according to the mass ratio of mobile sandy soil, sesame seed gum powder, polymer water-absorbing resin powder and attapulgite powder of 1000:2.5:1:1;

[0036] (2) Mix the mobile sandy soil, sesame seed gum, high molecular weight water-absorbing resin and attapulgite powder, and stir evenly to obtain a multifunctional sand gum crusting powder.

[0037] Example 3

[0038] (1) weighing raw materials according to the mass ratio of mobile sandy soil, sesame seed gum powder, polymer water-absorbing resin powder and attapulgite powder of 1000:3:1.3:1;

[0039] (2) Mix the mobile sandy soil, sesame seed gum, high molecular weight water-absorbing resin and attapulgite powder, and stir evenly to obtain a multifunctional sand gum crusting powder.

[0040] Test Example 1 Effect of different dosages on the hardness of sand cement crust

[0041] from Figure 1 It can be seen that under the condition of using the same amount of sand cement powder per unit area, as the ratio of plant glue to wind-blown sand increases, the hardness of the sand cement crust gradually increases and presents a linear relationship. 2 When the ratio of plant glue to wind-blown sand is 0.25%, the hardness of sand glue crust is 0.2kg / cm 2 , 0.3% hardness is 0.23kg / cm 2 , 0.4% hardness is 0.26kg / cm 2 , 0.5% hardness is 0.3kg / cm 2At the same time, under the same ratio of plant glue to sandy soil, as the amount of sand glue crusting powder used increases, the hardness of the sand glue crusting also gradually increases, and a linear relationship is shown. For example, when the ratio of plant glue to sandy soil is 0.3%, 2.0kg / m2 of sand glue crusting powder is used per square meter. 2 3.2kg / m 2 , 4.0kg / m 2 and 4.8kg / m 2 , the hardness of sand cement crust is 0.12kg / cm 2 , 0.23kg / cm 2 , 0.37kg / cm 2 and 0.63kg / cm 2 It is shown that the ratio of plant glue to wind-blown sandy soil and the amount used per unit area affect the hardness of sandy glue crust.

[0042] Test Example 2 Effect of different dosages on the thickness of sand cement crust

[0043] from Figure 2 It can be seen that the ratio of plant glue to sandy soil and the amount used per unit area affect the thickness of the sand cement crust. Under the condition of using the same amount of sand cement crust powder per unit area, as the ratio of plant glue to sandy soil increases, the thickness of the sand cement crust gradually increases. Under the same ratio of plant glue to sandy soil, as the amount of sand cement crust powder used increases, the thickness of the sand cement crust also gradually increases, and presents a linear relationship. For example, when the amount of cement crust powder is 3.2kg / m 2 When the ratio of plant glue to sandy soil is 0.25%, 0.3%, 0.4% and 0.5%, the thickness of sand glue crust is 0.34cm, 0.35cm, 0.37cm and 0.38cm respectively; when the ratio of plant glue to sandy soil is 0.3%, 2.0kg / m2 of sand glue crust powder is used per square meter. 2 3.2kg / m 2 , 4.0kg / m 2 and 4.8kg / m 2 The thickness of sand cementation crust is 0.26cm, 0.35cm, 0.52cm and 0.53cm respectively.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A multifunctional sand cement crusting powder, characterized in that: It is composed of the following raw materials: Flowing sandy soil, sesame seed gum, high molecular water-absorbing resin and attapulgite powder; Wherein, the mass ratio of the mobile sandy soil, sesame seed gum, high molecular water-absorbing resin and attapulgite powder is 1000:2.5-4:1-1.5:

1.

2. A multifunctional sand cement crust powder according to claim 1, characterized in that: The sesame seed gum and the high molecular water-absorbing resin are both in powder form.

3. A multifunctional sand cement crusting powder according to claim 1 or 2, characterized in that: The polymer water-absorbing resin is sodium polyacrylate.

4. A method for preparing a multifunctional sand cement crust powder, characterized in that: The following steps are involved: (1) Weighing the raw materials according to the mass ratio described in any one of claims 1 to 3; (2) Mix the mobile sandy soil, sesame seed gum, high molecular weight water-absorbing resin and attapulgite powder, and stir evenly to obtain a multifunctional sand gum crusting powder.

5. A method for applying the multifunctional sand cement crusting powder according to any one of claims 1 to 3, characterized in that: The steps are: After rainfall, evenly spread the sand-crusting powder on the surface of the mobile sand; Or, when there is no rainfall, first sprinkle the sand cement crust powder evenly on the surface of the mobile sand, and then use a sprayer to spray water to moisten the sand cement crust powder.

6. The application method of the multifunctional sand cement crusting powder according to claim 5, characterized in that: The multifunctional sand cementing crust powder is used in an amount of 2000-3000kg per mu.

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