Assembled blade guniting stirring drill bit and using method thereof

Abstract

The invention relates to an assembled blade guniting stirring drill bit and a using method thereof. The drill bit is composed of a hexagonal male joint, a drill rod body, an upper guniting opening, a clamping plate, a bolt, assembled blades, an auxiliary clamping plate, a nut, a core pipe, a lower guniting opening, a sealing gasket, guniting blade assemblies, an air spraying opening and a drill tip, wherein the hexagonal male joint is welded to the top end of the drill rod body, the guniting blade assemblies are arranged at the upper end and the lower end of the drill rod body, the multiple assembled blades are arranged at intervals in the period, and the drill rod body is provided with the upper guniting opening, the lower guniting opening and the air spraying opening. The problems that the guniting amount of the edge area of a large-diameter stirring pile is insufficient, and stirring is not uniform are effectively solved, the integrity of a pile body of the stirring pile is remarkably improved, the pile forming quality is good, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the field of pile foundation construction, in particular to an assembled-blade grouting mixing drill bit and a use method thereof. Background technique [0002] In the field of pile foundation construction, cement-soil mixing pile is a foundation reinforcement method suitable for saturated soft clay. It uses cement as the curing agent, and through the mixing machine, the soft soil and the curing agent are forced to stir in the depths of the foundation, and a series of physical and chemical reactions between the curing agent and the soft soil are used to strengthen the soft soil into an integral, Artificially improved foundation with stability and certain strength. A large number of engineering practices have proved that during the pile formation process of cement-soil mixing piles, the mass distribution of the pile body is uneven along the direction of the pile diameter. With the high confining pressure of the deep soil, it is...

AI Technical Summary

Problems solved by technology

A large number of engineering practices have proved that during the pile formation process of cement-soil mixing piles, the mass distribution of the pile body is uneven along the direction of the pile diameter. With the high confining pressure of the deep soil, it is easy to cause insufficient grouting at the edge of the pile body and uneven mixing. and other defects

The drill bit of the existing cement-soil mixing pile construction equipment generally adopts the method of spraying grout on the drill pipe body, and the diameter of the mixing pile is generally less than 1 meter, which cannot meet the construction requirements for large-diameter mixing piles; at the same time, the traditional drill bit is generally welded by stirring blades On the drill pipe body, the process is complicated, the efficiency is low, and the requirements for technical personnel are high

Images