Protection method for improving soil slope to resist rainwater erosion through phosphogypsum and microorganisms

Abstract

The invention provides a protection method for improving a soil slope to resist rainwater erosion through phosphogypsum and microorganisms. The protection method is characterized by including the steps that (1), bacillus pasteurii is put in a culture medium, a microorganism solution is prepared, urea, calcium chloride and water are mixed, and cementing liquid is prepared; (2), the mixture, the microorganism solution and water are mixed and stirred uniformly, the cementing liquid and water are added, the materials are mixed, and improved mixture slurry is prepared; and (3), a wet spraying method is adopted for spraying the improved mixture slurry onto the surface of the slope twice, then the improved mixture slurry and grass seeds are stirred uniformly, the material is sprayed to the surface of the slope at a time, the slope is covered with non-woven fabric, the non-woven fabric is firmly bound, and water is sprayed to the slope every day for maintenance. By means of the method, the protection requirements of rainwater wash resistance and slope ecological greening of the soil slope made of loess, gravelly soil and the like can be met, the phosphogypsum can be consumed, occupation ofcultivated land is reduced, and available phosphorus can promote plant growth. By means of the phosphogypsum improved with the microorganisms, harmful elements can be cured, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the field of slope engineering, in particular to a protection method for improving soil slope resistance to rainwater erosion by using phosphogypsum and microorganisms. Background technique [0002] Soil slopes have weak anti-erosion ability, especially the loess has collapsibility, and the excavated slopes are prone to serious water and soil erosion under the condition of rainfall, which will lead to landslide disasters of loess slopes. The traditional methods mostly adopt protective measures such as arched slope protection, sash beam slope protection, and mortar rubble slope protection. On the one hand, these traditional methods are expensive, on the other hand, the gray protective design forms a large contrast with the surrounding landscape, and is easy to cause the risk of secondary landslides. [0003] Phosphogypsum is a by-product produced by the wet process of phosphoric acid produced by the reaction of phospholime and ...

AI Technical Summary

Problems solved by technology

On the one hand, these traditional methods are expensive, on the other hand, the gray protective design forms a large contrast with the surrounding landscape, and it is easy to cause the risk of secondary landslides