Photo-thermal softening treatment method for hardened soil

Abstract

The invention discloses a photo-thermal softening treatment method for hardened soil, and belongs to the technical field of soil governing. According to the photo-thermal softening treatment method for the hardened soil, cracks of the hardened soil can be filled with magnetic heat-conducting microspheres, so that the heat conductivity in the soil can be improved, meanwhile, a magnetic attraction effect is provided, then the surface of the soil is coated with a film for heat preservation, and meanwhile, water leakage is avoided; then, a plurality of photo-thermal rods are inserted into the soil, external light energy is guided and conveyed into the soil, softening liquid is directly conveyed to the deep position of the soil through the photo-thermal rods, light energy conveyed based on the photo-thermal rods is matched with auxiliary photo-thermal bags in the softening liquid, a photo-thermal conversion effect is formed in the soil, moisture in the softening liquid is promoted to be evaporated in an accelerated mode, the characteristic that the density of water vapor is lower than that of air is utilized, the water vapor is quickly diffused to the surface of the soil so as to quickly soften the soil, and nutrient substances carried in the softening liquid can modify the soil, so that the hardened soil is effectively softened within a short time.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a photothermal softening treatment method for compacted soil. Background technique [0002] Soil compaction refers to the phenomenon that the surface layer of the soil is poor in structure due to the lack of organic matter, and the structure is destroyed and the soil material is dispersed under the action of external factors such as irrigation or rainfall, and the soil surface is hardened by the cohesive force after drying. [0003] As countries around the world pay more and more attention to the sustainable development of agriculture, higher requirements are put forward for the sustainability of soil production capacity. Especially in my country with a large population, little arable land, and the severe situation of food security, how to ensure the sustainable development of soil is particularly important. Soil compaction is one of the important manifestations of soil d...

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Problems solved by technology

[0006] In view of the problems existing in the prior art, the object of the present invention is to provide a photothermal softening treatment method for compacted soil, which can improve the thermal conductivity in the soil by filling the cracks of the compacted soil with magnetic heat-conducting microspheres, and at the same time Provide magnetic attraction, and then cover the soil surface with a film to keep heat, while avoiding water leakage, and then insert multiple photothermal rods into the soil to guide the external light energy into the soil, and directly through the photothermal rods The softening liquid is delivered to the depths of the soil. Based on the light energy delivered by the photothermal rod, it cooperates with the auxiliary photothermal package in the softening liquid to form a light-to-heat conversion effect inside the soil, which accelerates the evaporation of water in the softening liquid, and utilizes water vapor The density is lower than that of air, and it quickly diffuses to the soil surface, thereby quickly softening the soil, and the nutrients carried in the softening liquid can modify the soil, so as to achieve effective softening of the compacted soil in a short time, and at the same time Fundamentally improve the cause of soil compaction, and the problem of secondary compaction is not easy to occur

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