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.