3
振冲碎石桩
Stage1: The jet at the bottom of the Vibroflot is turned on and lowered into the
ground
Stage2: The water jet creates a quick condition in the soil. It allows the vibrating
unit to sink into the ground
Stage 3: Granular material is poured from the top of the hole. The water from the
lower jet is transferred to he jet at the top of the vibrating unit. This water carries
the granular material down the hole
Stage 4: The vibrating unit is gradually raised in about 0.3-m lifts and held
vibrating for about 30 seconds at each lift. This process compacts the soil to the
desired unit weight.
From Das,
1998
第 2 页 / 共 40 页