Method For Protecting Soil Slope From Shallow Landslide By Using Phosphogypsum

摘要

#$%^&*AU2020100940A420200723.pdf#####ABSTRACT The present invention provides a method for protecting an expansive soil slope from a shallow landslide by using phosphogypsum. The method includes: preparing an improver with anionic polyacrylamide and potassium chloride; preparing a mixture with phosphogypsum, fly ash and soil, and mixing the mixture with the improver and water to prepare an improving mixture slurry; laying a three-dimensional vegetation net on the face of the slope from top to bottom, and fixing the three-dimensional vegetation net; spraying the improving mixture slurry by wet spraying to the face of the slope twice; mixing the improving mixture slurry with grass seeds well, and spraying to the face of the slope once; covering with a non-woven fabric by tying and fixing, and watering every day. The method meets the requirements of greening protection and shallow landslide protection for expansive soil slopes. The method reduces the stock of phosphogypsum, thereby reducing the occupation of cultivated land and reducing environmental pollution. In addition, the method promotes plant growth with available phosphorus in the phosphogypsum