Cement mixing pileTwo spraying and three stirring: after the positioning of the pile machine is completed, the drill pipe is first lowered to stir (one stirring); After sinking to the design depth, the drill pipe should be lifted while stirring (stirring and spraying), and the lifting height should be ensured to make the stop grouting surface higher than the design pile top elevation 0.3~0.5m; After the lifting of the mixing slurry is completed, the sinking mixing slurry is carried out to the design depth (one stir and one spray); Finally, the drill pipe stops stirring the grouting and pulls out to carry out the construction of the next pile.

The specific process is as follows: pile machine in place→Pre mixing sinking→Spout stirring is lifted→Repeated stirring sink→Repeat the spout stirring lift→Stop pulp→Repeated stirring sink→Repeat stirring to raise until orifice→Stop stirring→shift

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