Multi-axial mixing pile device capable of reducing soil extrusion and application thereof

Abstract

The invention relates to a multi-axial mixing pile device capable of reducing soil extrusion and an application thereof. The device comprises a host, a hoist, a guide rod, a power head, a gearbox, a reducer and a drill pipe, wherein the hoist and the guide rod are fixed on the host; the power head, the gearbox and the reducer are arranged on the guide rod from top to bottom; the power head is connected with a pulley at the top of the guide rod through a steel wire rope which drives the power head to lift; the power head drives 1-9 drill pipes to rotate through the gearbox and the reducer sequentially, the rotation directions of the drill pipes are positive-reverse stagger, a grout inlet is arranged at the upper end of each drill pipe, the lower end of the drill pipe is connected with a winged drill pipe, the lower end of the winged drill pipe is connected with a multifunctional drill in a replaceable mode, and a grout nozzle and an air nozzle are arranged on the multifunctional drill. Compared with the prior art, the mixing pile device has the advantages of capable of reducing soil extrusion effect, better in drill forming, higher in cement use ratio, smaller in influence on surroundings and the like.

Description

technical field [0001] The invention relates to a mixing pile device and its application in building construction, in particular to a multi-axis mixing pile device capable of reducing soil compaction and its application, which is mainly used for foundation reinforcement in municipal foundation, industrial and civil engineering construction , improvement and foundation pit enclosure and other fields. Background technique [0002] Stirring piles are made by mixing and stirring the curing agent with the soil, and improving the engineering mechanical properties of the pile through the hydrochemical reaction of the curing agent. When the curing agent is injected through the grout pipe, it may squeeze the soil around the pile, and may also increase the extreme value of excess pore water pressure around the pile. The impact of this effect on the surrounding environment should be avoided during the project. [0003] At present, two-axis mixing piles and SMW construction methods ar...

AI Technical Summary

Problems solved by technology

The construction of the two-axis mixing pile squeezed the surrounding houses and pipelines, causing deformation of the surrounding buildings

The SMW construction method belongs to the displacement mixing pile. Although the phenomenon of soil extrusion is solved, 30% to 50% of the cement is replaced by the soil. The cost is high, and a large amount of cement is wasted in the soil, which has a great impact on the environment.

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