The invention relates to a dry and dense
resonance method for reinforcing a soft soil foundation of new hydraulic-fill sand. The method is suitable for reinforcing the soft soil foundation of the new large-area hydraulic-fill sand quickly. The method comprises the following steps of: 1, establishing
resonance equipment; 2, distributing points in a constructional area; 3,
dewatering in the constructional area, namely
dewatering in a mode of combining light well-point
dewatering with the
water pumping of a vibrator, and performing
resonance by using the vibrator after the
water level of underground water is reduced to a certain range; 4, performing vibration retention for the first time, namely performing the vibration retention after the vibrator reaches the required depth; 5, performing the vibration retention stage by stage, namely lifting the vibrator by 0.4 to 0.6 meter to perform the vibration retention for the second time after the reinforced depth is reached and the first-time vibration retention is performed, and performing the vibration retention stage by stage in a mode of lifting the vibrator by 0.4 to 0.6 meter until the vibrator is lifted to the ground surface; and 6, performing
counterpoint on resonance points, namely during resonance, after a group of double-end or three-end resonance is completed, guiding double-end or three-end resonance equipment to the other group of point positions which need to be resonated by using a crane to perform the next group of resonance. The dry and dense resonance method has a good sealing effect, and the problem of performingresonant construction on
sludge interlayers is solved.