Reducing swing-injected agitating pile
A technology of mixing piles and mixing blades, which is applied in the field of variable-diameter rotary spraying mixing piles, can solve the problems of uneven mixing at the lower part of the pile body and poor strength of the pile body, and achieve the effects of wide applicable stratum, large treatment depth and high pressure
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[0028] The invention discloses a variable diameter rotary jet stirring pile, which comprises an outer drill pipe and an inner drill pipe, the outer drill pipe and the inner drill pipe are both hollow structures, and the inner drill pipe is arranged in the outer drill pipe, and the same The shaft is arranged, and the lower part of the inner drill pipe penetrates the outer drill pipe; the lower part of the inner drill pipe and the lower part of the outer drill pipe are respectively provided with an expandable or retractable variable diameter stirring blade; the inner drill pipe It can move relative to the outer drill pipe in the axial direction to drive the expandable or retractable variable-diameter stirring blades to rotate relatively; there is a high-pressure spray head at the lower part of the inner drill pipe and between the expandable or retractable variable-diameter stirring blades , The high-pressure shotcrete head is connected with the mud pump through the grouting steel...
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