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旋喷地基是利用钻机钻到预定深度,然后用高压泵把浆液通过钻杆端头的特殊喷嘴以高压水平喷入土层,喷嘴在喷射浆液时,缓慢旋转(20r/min),边徐徐提升(15～30cm/min),借高压浆的水平射流不断切削土层,并与切削下来的土充分搅拌混合,最后在喷射力的有效射程范围内,形成一个由圆盘状混合物连续堆积成的圆柱状凝固体,即旋转喷射桩,从而提高地基土的承载力。该方法适用于砂土、粘性土、湿陷性
The rotary jet foundation is drilled to a predetermined depth by a drilling rig, and then the slurry is sprayed into the soil at a high pressure through a special high-pressure pump through a special nozzle at the end of the drill pipe. The nozzle slowly rotates (20r / min) 15 ~ 30cm / min). The horizontal jet of high-pressure slurry continuously cuts the soil and mixes thoroughly with the cut soil. Finally, within the effective range of the jetting force, a cylindrical column Solid-like solid, that is, rotating jet pile, thereby increasing the bearing capacity of the foundation soil. The method is suitable for sand, clay, collapsible