Construction method of steel gap drainage ditch for steep slope underground passage

By employing stainless steel slotted drainage ditches welded with pre-embedded integral reinforcing frames and a detachable, easily dredged water channel structure in steep underground passages, the problems of easy structural damage and silt blockage of slotted drainage ditches in steep underground passages have been solved, achieving structural stability and rapid silt removal.

CN116575559BActive Publication Date: 2026-06-30ANHUI HIGHWAY ENG CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI HIGHWAY ENG CORP
Filing Date
2023-05-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing slotted drainage ditches suffer from problems such as unreasonable structural stress, easy damage to sidewalls due to pressure, and difficulty in clearing silt blockages, which are particularly evident in underground passages with steep slopes.

Method used

The construction method of steel slotted drainage ditch for underground passage with large slope includes the construction of a compacted soil layer, a crushed stone cushion layer and a plain concrete cushion layer in the foundation trench, and the welding of stainless steel slotted drainage ditch to pre-embedded symmetrical integral reinforcement frame to fix the steel, and the installation of steel slotted drainage ditch inspection well and detachable and easy-to-clean water channel structure.

Benefits of technology

It effectively stabilizes the structure of the steel slotted drainage ditch, ensures the stability of the prefabricated assembled well cylinder, and achieves rapid dredging, solving the problems of easy structural damage and silt blockage.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a construction method for a steel-framed drainage ditch in a steeply sloping underground passage, comprising the following steps: pre-embedded symmetrical integral reinforcing frame for fixing steel sections; installation of the steel-framed drainage ditch; construction of manhole base; construction of manhole shaft; construction of the manhole fixing structure for the steel-framed drainage ditch; and road surface restoration. The beneficial effects of this invention are: the steel-framed drainage ditch is effectively fixed by symmetrical anti-corrosion steel reinforcement on both sides and pre-embedded symmetrical integral reinforcing frame; the stability of the prefabricated manhole shaft is effectively ensured by setting an anti-slip prefabricated base with tongue-and-groove connection to the subgrade, combined with symmetrical anti-corrosion steel reinforcement and pre-embedded symmetrical integral reinforcing frame; and the rapid dredging effect is achieved by shaking the detachable sludge-removing vertical rod to swing the detachable sludge-removing brush, and by pushing the detachable sludge-removing rotating wheels on both sides to move the detachable easy-to-clean water trough structure forward.
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