Rock stratum artificial hole digging pile rapid hole forming device and construction method thereof

By combining surface trusses and breaking devices, efficient, safe, and quality-controllable construction of manually excavated bored piles in rock strata is achieved, solving the problems of low efficiency and high risk in traditional construction.

CN122280448APending Publication Date: 2026-06-26NANJING FORESTRY UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING FORESTRY UNIV
Filing Date
2026-02-05
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies for manually excavated bored pile construction in rock formations are characterized by low efficiency, high risk, and uncontrollable quality.

Method used

Vertical rotary excavation is carried out using surface trusses and vertical crushing devices to form a ring-shaped trench. Combined with radial crushing devices, radial extrusion force is applied to the rock mass at the center of the pile hole to fracture the rock mass. The rock mass is then lifted out by mechanized means to complete the pile hole excavation.

Benefits of technology

It significantly improves construction efficiency, reduces safety risks, ensures the quality of pile hole formation, adapts to different pile depths and diameters, reduces labor costs, and avoids hole collapse and other safety hazards.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a rapid drilling device and construction method for manually excavated bored piles in rock strata. In this device, a surface truss is fixedly installed on the surface of the foundation rock mass, and a vertical or radial crushing device is connected below the surface truss. The vertical crushing device vertically rotary-dugs the rock mass around the pile hole to form an annular trench. The radial crushing device is lowered to the bottom of the annular trench via the surface truss, applying radial compressive force to the rock mass at the center of the pile hole, causing it to fracture. The excavation of the pile hole is completed by the alternating operation of the vertical and radial crushing devices. The construction method includes: pile hole positioning, truss installation, rotary trenching, radial crushing, and rock mass removal. This invention, through vertical mechanical rotary trenching combined with radial overall crushing and removal, effectively solves the problems of low construction efficiency, high safety risks, and poor construction quality associated with traditional manually excavated bored piles in rock strata, and has broad application prospects.
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