Vegetation revetment strengthening method under intense rainfall condition

Abstract

The invention belongs to the technical field of environmental geotechnics and environment protection and provides an effective vegetation revetment strengthening method under an intense rainfall condition. According to the method, the deformation effect between root hairs, vertical root systems and horizontal root systems with surrounding soil bodies in shallow slip and deep slope slip crack are distinguished. The method comprises the following steps of: determining soil shear strength increased by a ribbing effect of the root hairs; calculating maximum anchoring force of the vertical root systems; calculating interaction force of roots of the horizontal root systems and soil; and reasonably determining the plant line spacing of vegetation on a slope. Based on a soil fixing mechanical effects of the root systems of the revetment vegetation and various root-soil interaction mechanisms, the method provided by the invention is effective and simplified, brings convenience for engineering application, can be used for reinforcing the vegetation revetment and serves as an effective way for preventing slope instability and slippage under the intense rainfall condition. The method can be used for guiding the design and construction of vegetation revetment reinforcing under the intense rainfall condition and can ensure that the design meets expected prevention and protection requirements, thus avoiding unnecessary economic waste.

Description

technical field [0001] The invention relates to the technical field of environmental geotechnical engineering and environmental protection, and is an effective method for reinforcing slope protection of vegetation under the condition of heavy rainfall. Background technique [0002] Heavy rainfall conditions are likely to cause slope instability and slip disasters. Use the root system of vegetation to anchor, reinforce, and transpirate the soil of the slope to increase the shear strength of the soil and strengthen the slope. It has become an effective disposal method for landslide prevention and protection, and has been widely used in slope engineering. Nowadays, there are few systematic and scientific methods for the reinforcement of vegetation slope protection under heavy rainfall conditions, but more about the mechanical effects and mechanisms of soil reinforcement of vegetation slope protection roots, including the anchoring effect of deep thick roots, the reinforcement e...

AI Technical Summary

Problems solved by technology

Nowadays, there are few systematic and scientific methods for the reinforcement of vegetation slope protection under heavy rainfall conditions, but more about the mechanical effects and mechanisms of soil reinforcement of vegetation slope protection roots, including the anchoring effect of deep thick roots, the reinforcement effect of shallow fine roots, and the reduction of slope mass. Insufficient understanding of pore water pressure, etc., only put forward empirical methods, which brings great blindness and randomness to the design and construction of vegetation slope protection projects, and easily causes the design to fail to meet the expected protection requirements or cause unnecessary economic losses. waste

In addition, the existing methods cannot distinguish between the shallow sliding and the deep slope sliding, the deformation between the roots, vertical roots and horizontal roots and the surrounding soil

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