Vibroflotation Compaction Treatment for section c3206 of Hong Kong No. 3 aircraft runway project

The project adopts 30 sets of 180kw-200kw vibroflotation equipment for double crane vibroflotation compaction construction, the pile spacing is up to 4.2m, and the compaction effect meets the design requirements of 95% relative compactness.

BVEM - China vibroflot supplier

With 30 years experience of vibroflotation industry, BVEM researched and developed a variety of electric vibroflots motor power from 30 kw to 260 kw. BVEM’s vibroflots has complete specification model which makes widely using of range. The quality of the equipment and performance have already achieved the domestic industry leading level. Through the application of hundreds of domestic and international projects, including the Yangtze River Three Gorges Soft Ground Treatment Project, The Hong kong-Zhuhai-Macao Bridge Project, Dubai Palm Island Project,etc, BVEM has developed to be Asia's larger electrical vibroflots equipment manufacturers, and are being highly recognized by domestic and international clients.

Vibro Compaction method

This method allows granular soils to be compacted. This method is only used to compact sandy soils.

How Vibroflotation Works

The process of vibroflotation is really simple as you will see in the following short description. The depth probe is located over the compaction point. Flushing water or air is expelled through jets in the tip of the probe. These induced injected vibrations will liquefy the soil temporarily allowing the probe a continuous penetration under its own weight.

Once the probe has reached the strata or poor soil, the water and air injections is stopped. At this point the soil is densified by the probe vibrations causing a crater around the vibrator, that should be backfilled with granular material.

Once the process has been completed, the probe is slowly withdrawn usually in stages of 12 inches. A cylindrical compaction zone is formed around the probe, and the achieved degree of compaction is indicated by an increase in oil pressure. The area around the probe is backfilled with granular material that will auto-consolidate, as the probe is begin brought up. The material used to backfill should be free of silt, gravel or crushed stone.