CONSTRUCTION METHOD FOR ACHIEVING LARGE-DIAMETER DEEP MIXING ON BASIS OF RESISTANCE REDUCTION

Provided is a construction method for achieving large-diameter deep mixing on the basis of resistance reduction, belonging to the technical field of pile foundation construction, organically combining a resistance reduction material with a mixing drilling rig, and using the following steps to implement a large-diameter deep construction method: construction site preparation, and configuration and refitting of construction equipment; configuration of resistance reduction material and curing material; mixing and drill lowering construction; mixing and drill raising construction; secondary mixing and drill lowering construction; secondary mixing and drill raising construction; when the mixing drill bit is raised to a design height, completing the mixing operation, ending the construction. The present invention improves the structure of a traditional drill bit to achieve the function of resistance reduction; reducing the resistance of the stirring blade by means of spraying an ionic surfactant solution; carbon na