A construction method for soil nailing walls for geological disaster control

By installing steel mesh cylinders inside the holes of the soil nailing wall and applying diatomaceous earth to form a waterproof layer, the corrosion problem caused by poor drainage during soil nailing wall construction is solved, thus improving the long-term stability and reinforcement effect of the soil nailing wall.

CN117328494BActive Publication Date: 2026-06-30SHENZHEN GUANGYUANDA CONSTR ENG CO LTD
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Patent Information

Application Number
CN202311465276.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-03
Publication Date
2026-06-30
Estimated Expiration
2043-11-03

AI Technical Summary

Technical Problem

Existing soil nailing wall construction techniques cannot effectively drain water that seeps into the soil, causing the steel-reinforced soil nails to corrode and fall off in humid environments, affecting the slope reinforcement effect and requiring frequent replacement, thus increasing maintenance costs.

Method used

A steel mesh cylinder is installed inside the hole and coated with diatomaceous earth to form a waterproof layer. The steel mesh cylinder provides a skeleton support for the diatomaceous earth, allowing it to adhere stably to the inner wall of the hole. After curing, it absorbs moisture from the hole wall and is then sprayed with waterproof material to isolate the main steel reinforcement from the moisture-absorbing diatomaceous earth. Finally, a drain pipe is used to discharge the water that has gathered into streams.

Benefits of technology

It effectively prevents the soil nails made of steel bars from corroding and falling off in humid environments, reduces maintenance and replacement costs, improves the slope reinforcement effect, and maintains the stability of the soil nail wall structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a construction method for soil nailing walls used in geological disaster control, relating to the field of geological disaster control technology. The method includes: S1, environmental survey and construction design; S2, bottom layer spraying and drilling; S3, moisture-proofing treatment of the holes; S4, soil nail placement and grouting; S5, installation of reinforcing mesh and drainage pipes; and S6, concrete surface spraying. This construction method for soil nailing walls not only includes drainage pipes for drainage but also provides moisture-proofing treatment for the holes. A steel mesh cylinder is placed inside the holes and coated with prepared diatomaceous earth. This improved construction process not only drains water that accumulates in the soil layer but also absorbs moisture from the inner walls of the holes. Combined with the isolation effect of the waterproof layer, it prevents the reinforced soil nails from being in a damp environment for extended periods, thus preventing corrosion and peeling of the protective layer on the soil nail surface. This reduces soil nail corrosion, lowers maintenance and replacement costs, and maintains the structural stability of the original soil nailing wall, improving the slope reinforcement effect.
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Citation Information

Patent Citations

  • Soil nailing wall construction technology for geological disaster control

    CN113897976A

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    CN105649079A

  • Small-duct grouting hole plugging device and method

    CN109594951A