喷粉桩是深层搅拌桩的一种,系用水泥作固化剂,通过喷搅机械,用压缩空气将水泥粉以雾状喷人被加固地基土中,与原地软土就地强制搅拌混合,利用水泥吸水和与周围土颗粒发生水解、水化反应并进行阳离子交换等物理化学作用,硬化后形成整体性强、水稳定性好和足够强度的水泥土桩体。该桩是一种介于刚性桩和柔性桩之间的可压缩性桩, Dusting pile is a deep mixing pile, the Department of cement as a curing agent, through the spray machinery, with compressed air cement powder to be sprayed into the soil to be reinforced in the ground, with the local soft soil mixing forced mixing place , The use of cement and water around the soil particles and hydrolysis, hydration reaction and cation exchange and other physical and chemical effects, after hardening to form a strong integrity, good water stability and sufficient strength of cement-soil piles. The pile is a kind of compressible pile between rigid pile and flexible pile,