一、前言水泥喷射深层搅拌是利用专用机械设备 ,将水泥干粉用压缩空气喷入到土体深层 ,赁借搅拌机回转钻头叶片 ,与原位软弱土搅拌混合压密 ,同时吸收地下水 ,通过水泥在土层所发生的物理化学反应 ,以形成具有整体性、水稳性及有一定强度的桩状加固体———即粉喷桩。利用这种 I. Introduction Cement injection deep mixing is the use of special machinery and equipment, the cement powder with compressed air sprayed into the soil deep, lend the mixer rotary drill blade, mixing with the soft soil in situ mixing pressure, while absorbing groundwater, through the cement The physico-chemical reactions that take place in the soil layer form a pile-like reinforcement that is monolithic, water-stable and has a certain strength --- a powder jetting pile. Use this