Grouting protective barrel device and pile foundation hole-forming construction method adopting same

Abstract

The invention provides a grouting protective barrel device and a pile foundation hole-forming construction method adopting the same. The grouting protective barrel device comprises a barrel body. At least three grouting pipes are arranged on the outer side wall of the upper portion of the barrel body in the length direction and are arranged at equal intervals along the periphery of the barrel body. The side wall of the lower portion of the barrel body is provided with an observation hole. The bottom of the barrel body is provided with a groove blade foot. According to the grouting protective barrel device and the pile foundation hole-forming construction method adopting the same, temporary wall protection for surrounding backfill stone throwing of a drilling machine followed by the protective barrel, hole forming is easy, hole forming quality is high, safety and reliability are achieved, construction efficiency is high, convenience and safety are achieved, and cost is low.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction in construction engineering, in particular to a grouting casing device and a pile foundation hole-forming construction method using the casing device. Background technique [0002] In the foundation treatment construction of construction engineering, the casing is a tool device that is often used. Its function is to play the role of retaining wall in the foundation soil and protect the pile body inside it during the construction process. The grouting method is a construction technology that uses a pressure pump to inject a reinforcing grout into the foundation soil. Its purpose is to make the injected grout permeate and diffuse in the soil, and achieve reinforcement after a certain period of time. For the purposes of formation and anti-seepage and waterproofing, its effect on the reinforcement and waterproofing of underground structures is more obvious. [0003] At present, w...

AI Technical Summary

Problems solved by technology

However, when the drilled soil is a riprap backfill formation, the drilling rig cannot drill a hole and the mud wall cannot be used, and the problem of hole collapse is often prone to occur

If the method of full-height steel casing is used to form holes, although the problem of hole collapse can be better solved, there are problems such as high construction cost and difficult construction.

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