An expansive soil slope supporting anchor rod and supporting method based on dry-wet cycle technology

By using expansive soil slope support anchors based on wet-dry cycle technology, the soil confining pressure is monitored in real time and the water volume is adjusted. This solves the problem of anchor deformation and reduced support capacity when the moisture content of expansive soil changes, achieving stable slope support and compaction, and reducing costs and resource consumption.

CN118273320BActive Publication Date: 2026-02-10SOUTH CHINA UNIV OF TECH
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Patent Information

Application Number
CN202410554425.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-07
Publication Date
2026-02-10
Estimated Expiration
2044-05-07

AI Technical Summary

Technical Problem

When expansive soil expands upon contact with water, it compresses the anchor bolts, causing excessive deformation. During the dry season, water loss and shrinkage reduce the frictional resistance, thus decreasing the anchor bolts' support capacity. Furthermore, when weather changes drastically, the anchor bolts are unable to effectively support and reinforce the soil.

Method used

The expansive soil slope support anchors based on wet-dry cycle technology are used. The soil confining pressure is monitored in real time by a pressure detection device. The water volume regulation device absorbs excess water during the rainy season and discharges stored water during the dry season to keep the confining pressure near the preset value. Combined with solar photovoltaic power generation, adaptive adjustment is achieved.

Benefits of technology

It effectively maintains the support capacity of anchor bolts, prevents soil cracking and deformation, achieves stable support and reinforcement of slopes, reduces construction and maintenance costs, saves resources, and improves the benefits of slope engineering.

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Abstract

The present application relates to a kind of based on wetting and drying cycle technology's expansive soil side slope support anchor rod and supporting method, support anchor rod includes anchor rod body, water amount regulating device and control device;Anchor rod body is equipped with pressure detection device, for when the water content of surrounding soil changes, the confining pressure that the surrounding soil is applied to anchor rod body is detected and sent to control device;Control device is connected to pressure detection device and water amount regulating device respectively, for receiving confining pressure sent by pressure detection device, and according to confining pressure corresponding control water amount regulating device action;Wherein, when the water content of surrounding soil increases and leads to confining pressure greater than preset value, water amount regulating device absorbs and stores the moisture of surrounding soil;When the moisture of surrounding soil reduces and leads to confining pressure less than preset value, water amount regulating device drains to surrounding soil.Will be self-adapting the change of the water content of surrounding soil, avoid support anchor rod to be deformed by excessive confining pressure, can maintain stronger supporting capacity, to effectively support and ramify in turn to soil.
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