A diaphragm wall dismantling device and construction method

By using a diaphragm wall demolition device for drilling and cutting, the problems of high construction difficulty and high risk were solved, enabling rapid, non-destructive demolition and efficient construction.

CN117822944BActive Publication Date: 2026-05-15CHINA RAILWAY NO 5 ENG GRP MECHANICAL ENG +3
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Patent Information

Application Number
CN202311859987.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-31
Publication Date
2026-05-15
Estimated Expiration
2043-12-31

AI Technical Summary

Technical Problem

Existing technologies for dismantling diaphragm walls present challenges such as high construction difficulty, high risk, significant risk of damage to surrounding structures, and low efficiency.

Method used

A diaphragm wall demolition device is adopted, including a drilling and cutting unit and a guide frame. Drilling and cutting are performed using drilling and cutting components. The drilling and cutting unit can be moved and retracted by a tensioning component. A free surface is formed by vertical and horizontal drilling and cutting. The diaphragm wall is divided into independent blocks by a free wire saw.

Benefits of technology

This method enables the rapid and non-destructive removal of diaphragm walls, reducing the labor intensity of construction workers, improving construction efficiency and safety, and reducing the risk of damage to surrounding structures.

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Abstract

The application relates to the technical field of underground structure demolition construction, and provides an underground diaphragm wall demolition device and a construction method, which comprises a drilling and cutting unit and a guide frame, the drilling and cutting unit comprises a support beam, is arranged on the guide frame, the support beam can move, and the guide frame limits the movement of the support beam; the drilling and cutting unit further comprises a drilling assembly and a cutting assembly, the drilling assembly comprises a drill rod and a drill bit, the drill rod is arranged below the support beam, a transmission assembly is arranged in the drill rod, and the drill bit is arranged at the bottom of the drill rod and connected with the transmission assembly; the cutting assembly comprises a cutting rope saw, the cutting rope saw is connected with the transmission assembly through a rope saw guide wheel; a guide ring, a fixed ring one and a fixed ring two are arranged on the guide frame, the guide ring is sleeved outside the drill rod and used for guiding and limiting the drill rod. The underground diaphragm wall can be quickly and non-destructively demolished, the device is simple to operate, the labor intensity of construction personnel is reduced, safety is good, and the construction efficiency is high.
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