Slope repair method

A slope repair method, comprising the following steps:

• (1) pretreating a slope, so that an average roughness of the pretreated slope is from −8 to −12 cm for a depression and 8 to 12 cm for a protrusion per linear meter;
• (2) hanging a protective mesh on the pretreated slope, wherein a distance between the protective mesh and the slope is 3-4 cm, the protective mesh has an aperture size of 4-6 cm, vegetation mats with a size of (55-65) cm×(30-40) cm×(12-16) cm are filled between the protective mesh and the slope, and a distance between two of the vegetation mats on the slope is 150-250 cm;
• and
• (3) spraying a loam-like matrix on the slope with the protective mesh hanged, wherein the loam-like matrix comprises not less than 0.04 kg/m2 of plant seeds;
• the plant seeds comprise tree seeds, shrub seeds and herb seeds with a mass ratio of (2.5-3.5):(4-6):(1.5-2.5) and wherein the loam-like matrix comprises topsoil, an organic fertilizer, activated carbon, a fibrous matter, a water-retaining agent, a binder, a matrix additive and plant seeds;
• the mass of the topsoil in the loam-like matrix is 110-130 kg/m2;
• a mass of the organic fertilizer in the loam-like matrix is 3-5 kg/m2;
• a mass of the activated carbon in the loam-like matrix is 0.3-0.5 kg/m2;
• a mass of the fibrous matter in the loam-like matrix is 3-5 kg/m2;
• a mass of the water-retaining agent in the loam-like matrix is 0.02-0.03 kg/m2;
• a mass of the binder in the loam-like matrix is 0.01-0.016 kg/m2;
• a mass of the matrix additive in the loam-like matrix is 0.005-0.015 kg/m2;
• a mass of the plant seeds in the loam-like matrix is 0.04-0.05 kg/m2;
• the matrix additive comprises a degradable polymer material mixture, volcanic soil, vermiculite and maifanite;
• the degradable polymer material mixture is prepared from the following raw materials of parts by mass:
• 10-15 parts of starch, 0.5-1.5 parts of gibberellin, 0.2-0.8 parts of chitin and 80-90 parts of water;
• the degradable polymer material mixture, the volcanic soil, the vermiculite and the maifanite have a mass ratio of 2:(0.5-1.5):(0.5-1.5):(1-4).