Sustainable flexible slope protection method and system for soft sandstone high and steep slope vegetation greening

Abstract

The invention discloses a sustainable flexible slope protection method and system for soft sandstone high and steep slope vegetation greening, and the method comprises the steps: digging a slope top intercepting ditch which is used for intercepting rainfall runoff of a slope top; the slope surface is sprayed, and a corrosion-resistant seepage-control layer with a certain thickness and micropores is formed through the seepage and wrapping effects; laying a layer of fine steel wire mesh on the soft sandstone slope surface to control infiltration; 2, two layers of continuous vegetation bags are laid, then the vegetation base material is injected through mechanical pressure feeding equipment, the vegetation bags are in a saturated state, and the tightness between the vegetation bags is guaranteed; the vegetation bag and the steel wire mesh are fixed through fixing pieces; a waterproof retaining wall is built at the bottom of the slope surface; slope drainage ditches are arranged to converge part of rainwater runoff from the slope surface and the slope bottom; vegetation is planted on the slope surface, and later maintenance is conducted. According to the method, an integral multi-layer flexible slope protection structure is formed on the whole, corrosion resistance protection can be effectively conducted on the soft sandstone high and steep slope, and sustainable treatment and repairing can be achieved through surface greening.

Description

technical field [0001] The invention belongs to the technical category of comprehensive treatment of slopes, and specifically relates to a sustainable flexible slope protection method and system for planting and afforesting high and steep sandstone slopes. Background technique [0002] Pisha sandstone is a special loose interbedded weakly cemented rock composed of sandstone, sand shale and argillaceous sandstone. It is mainly distributed in the upper and middle reaches of the Yellow River in my country. In the environment, it is easy to weather and fall off, and it will collapse into sand when it encounters water. The erosion is extremely severe, and the erosion modulus can reach 30,000 ~ 40,000 t / (a·km2). In addition, the Pisha Sandstone area is in the transitional area from the Loess Plateau to the Northwest Desert type, where the environmental heterogeneity is extremely prominent, and the ecological degradation and soil erosion are extremely serious. According to statisti...

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary to provide a sustainable and flexible slope protection method for the vegetation and greening of the high and steep sandstone slopes on the entire slope of the sandstone to solve the erosion and stability problems of the sandstone slope, and at the same time realize its sustainable ecological development and protection.

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