A spraying matrix and its application method on high and steep slopes in the northern region

Abstract

The invention provides a spraying substrate for high and steep slopes in the northern region, including a bottom layer, a planting layer and a surface layer, and the bottom layer is composed of the following raw materials in parts by mass: 5-6 parts of cement, 6-8 parts of modified wood fiber , 8-11 parts of light ceramsite, 40-50 parts of soil, 0.5-1 part of methanol, 2-3 parts of gypsum, 20-30 parts of dried biogas residue, and the planting layer is composed of the following raw materials in parts by mass: 0.6~1 part of modified polyacrylamide, 4~6 parts of modified wood fiber, 8~11 parts of light ceramsite, 40~50 parts of soil, 30~40 parts of dried biogas residue, 2~3 parts of compound fertilizer, 0.5-0.7 parts of plant seeds, the surface layer is composed of the following raw materials in parts by mass: 50-60 parts of rice straw, 20-30 parts of dried sludge, 10-15 parts of fly ash, 5-10 parts of blast furnace slag powder . The substrate of the invention has good water retention, high nutrient, low maintenance cost and high plant survival rate.

Description

technical field [0001] The invention relates to the technical field of slope restoration, in particular to a spraying substrate for high and steep slopes in the northern region and an application method thereof. Background technique [0002] On the one hand, the mining of mineral resources provides the necessary resources for the society, on the other hand, it also causes damage to the ecological environment to varying degrees. The mine pits seriously damaged the original landform structure, resulting in land desertification, soil erosion, and greatly affected the natural ecology. . [0003] There are great differences in the engineering effects of traditional spraying technology in different regions in the south and north of my country. Generally speaking, the restoration effect of slope vegetation in the southern region is better and relatively stable, while in the northern region, although the initial effect is better, the quality of the later project declines significan...

AI Technical Summary

Problems solved by technology

[0004] The traditional greening of high and steep slopes mainly uses hanging nets and soil spraying. This method can achieve a relatively ideal greening effect when the slope is less than 60 degrees, and the slope is greater than 60 degrees, especially when the slope is greater than 70 degrees. , because the spraying substrate is difficult to resist the erosion of rainwater, vegetation is difficult to grow, and due to the weight of the substrate, the substrate layer at the bottom of the slope is often thicker, the substrate layer at the top of the slope is thinner, and the vegetation coverage on the slope is uneven