Comprehensive prevention and control system applied to gravel soil side slope

Abstract

The invention belongs to the technical field of geotechnical engineering, and discloses a comprehensive prevention and control system applied to a gravel soil side slope. According to the comprehensive prevention and control system, the good slope anti-seepage effect is achieved by burying drainage blind pipes and rapid drainage pipes in a slope surface layer soil body, arranging an intercepting ditch at the top of the slope, arranging a drainage channel at the foot of the slope and performing planting and greening on the slope surface, and the influence of surface water infiltration such as rainfall on the slope stability is reduced; after spring type spiral steel bars are put into pile holes, concrete doped with an expanding agent is poured into the pile holes to form miniature anti-slide piles, prestressed anchor cables are arranged to improve the shear strength of the side slope, and the stability among a potential sliding surface upper landslide mass, a potential sliding belt anda lower stable soil mass is enhanced; a plain concrete retaining wall is arranged at the foot of the slope to support the side slope, and a deep drainage pipe is drilled in the concentrated seepage area to effectively cut off the concentrated seepage, and water is collected and guided out of the slope; and finally, the anti-seepage drainage and reinforcement effects on the side slope are remarkable, and compared with traditional electro-osmosis drainage, energy consumption is reduced, economic benefits are remarkable, and operability is high.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a prevention and control system for gravel soil slopes. Background technique [0002] Landslide disasters have always been one of the main problems faced by engineering construction in mountainous areas, often causing huge losses to agricultural production and people's lives and property, and even devastating disasters. [0003] Gravel soil landslide is one of the main types of landslides, and rainfall is the main factor inducing its deformation and instability. The infiltration of surface water exceeds the discharge of the slope drainage system, resulting in slope instability. Therefore, with the development of the national economy and the development of transportation construction in recent years, gravel soil landslide disasters have occurred frequently in southern my country where there is more rain, especially in Yunnan, Sichuan, Guizhou and other...

AI Technical Summary

Problems solved by technology

At present, the treatment of landslides is mainly focused on eliminating and reducing the harm of water to the slope and improving the mechanical strength of slope rock and soil, mainly including slope anti-seepage, shaft pumping, tunnel dredging, supporting blind ditches, cutting Slope load reduction, slope artificial reinforcement, prestressed anchor rod or anchor cable, consolidation grouting or electrochemical reinforcement methods, etc., but there are relatively few technologies for comprehensive treatment of slope anti-seepage and slope support

[0005] The Chinese patent application "Gravel Soil Slope Support Structure" with the application number 201720037523.2 discloses a kind of gravel soil slope support structure, which is reinforced by multiple anchor cable rib wall reinforcement structures and The anchor cable anti-sliding reinforcement structure achieves the effect of reinforcing the side slope. The anti-sliding side slope is reinforced by setting anti-sliding retaining walls and anti-sliding pile groups, but this method only achieves the supporting effect, and the construction volume is large. The cost is high, and no effective measures have been taken for slope anti-seepage. The impact of long-term rainfall infiltration is likely to cause slope instability and cannot achieve a good reinforcement effect

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