Air inflation dewatering type slope anchoring body system and construction method thereof

Abstract

The invention provides an air inflation dewatering type slope anchoring body system and a construction method thereof. The system comprises an anchoring structure, an air inflation device and a dewatering system; a frame and hollow anchor pipes are fixed through anchorage devices, and dewatering plates and moisture meters are arranged between the two hollow anchor pipes; an air compressor is connected with the hollow anchor pipes through an air inflation pipe; the two sides of the dewatering plates are provided with vertical dewatering grooves; the root of a slope is provided with a transversedrain; a controller is connected with the water meters and the air compressor through wires; and when the water content of the slope is higher than the set water content, the controller is connectedwith the air compressor, air is injected into the hollow anchor pipes, water in the slope is drained from plate openings of the dewatering plates under action of air pressure, and otherwise, dewatering is not conducted. According to the air inflation dewatering type slope anchoring body system and the construction method thereof, the effect that air inflation dewatering and grouting anchorage areconducted at the same time is achieved, a new idea is provided for the landslide problem caused by raining or underground water level rising, the anchoring and dewatering effects are obvious, the structure is simple and easy to implement, and the landslide risk can be reduced.

Description

technical field [0001] The invention relates to the technical field of slope engineering, in particular to an inflatable drainage slope anchor system and a construction method thereof. Background technique [0002] my country is a mountainous country, and landslide disasters often affect the smooth flow of roads in mountainous areas, and even cause loss of life and property. Most of the landslide disasters are caused by the rise of the groundwater level of the slope caused by rainfall infiltration. The rise of the groundwater level of the slope is a process of rainfall accumulation. If the groundwater can be removed in time to effectively prevent the groundwater from accumulating and rising, most landslides can be prevented. Landslide drainage technology has received the attention of geotechnical engineers. At present, the main drainage technologies include: horizontal drainage pipes, water collection well pumping, surface drainage ditches, underground drainage blind ditch...

AI Technical Summary

Problems solved by technology

Landslide drainage technology has received the attention of geotechnical engineers. At present, the main drainage technologies include: horizontal drainage pipes, water collection well pumping, surface drainage ditches, underground drainage blind ditches and siphon drainage, etc. These measures are still unable to meet the rapid and economical realization of slopes. The goal of effective moisture control

[0003] At present, in the existing technology that combines the anchoring and drainage functions of rock and soil, all rely on free flow from the rock and soil to the drainage channel; when the permeability of the rock and soil around the anchor is relatively low, it will be greatly reduced. Reduce the drainage effect of the anchor rod, prolong the drainage time, and greatly increase the risk of slope instability or collapse

The patent application number 200910099603.0 provides a landslide inflatable drainage treatment method, which is to drill a hole on the landslide body, insert an inflatable tube into the hole, and the inflatable tube is divided into two parts: the hole wall sealing section and the air-permeable section, and the air compressor presses the air to each drill hole. Air is injected into the potential landslide body through air pressure to squeeze out the water in the potential landslide mass. This method can realize air-water replacement and reduce the water content in the slope body. However, for high and steep slopes, the drainage method alone cannot completely prevent slope instability. , it still needs to be treated with support and retaining, and for the soil with low permeability coefficient, the drainage speed is very slow, and the groundwater level in the slope body will generate a large hydrodynamic pressure, which will induce landslides

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