OMS Pile Driving Equipment GmbH. provides a large selection of ground improvement techniques: “vibro compaction”, “vibro replacement” and “vertical drain”. As effective as our products are, choosing the correct equipment for your project might be a challenge. However, our experts on ground engineering can help you to decide on the best equipment for your project. Today, the social and industrial growth has increased the importance of ground engineering. In fact, the profession plays a crucial role in projects such as power stations or the expansion of infrastructure systems like harbors and airports. Therefore, it is good to consult to an expert before deciding on the method of ground improvement. METHODS Deep vibro compaction and vibro replacement methods are mainly to increase the strength of granular soils as well as unfavorable soil conditions. They are also beneficial for the improvement of deformation characteristics of the same type of soil. The two methods work by enhancing the bearing capacity of the weak layer. Then, they utilize the benefit of the improved resistance. Ergo, this results in a transition between deep foundation and soil stabilization. This way, the transition ensures a structural support below or on the improved ground surface both safety and economy wise. As OMS team, we support our customers by recommending the best soil improvement equipment solutions. Vibro compaction and vibro replacement (stone columns) as well as vertical drain (wick drain) equipment of OMS have proved themselves in the global market from Europe to Middle East, South East Asia and America continent. VIBRO COMPACTION – TOP FEED GROUND IMPROVEMENT TECHNIQUE Vibro compaction method is mostly suitable for fine granular soils with seismic risk. For this reason, experts suggest for land reclamation projects to decrease the risk of liquefaction. Furthermore, the technique is useful for the densification of sand-like soils on site through an OMS Vibroflotation prob. Due to the concurrent impact of saturation and vibration, loose sand particles changes into a more compact state. As a result, lateral confining pressure of the sand mass rises. Vibro compaction top feed technique is convenient for medium to coarse-grained sand with silt content. Cohesive soils with silt and clay does not respond to vibratory compaction. Vibro Compaction Tandem Free Hanging Ground Improvement: The tandem vibro compaction includes two vibroflotation probes. Each prob suspends from the same crane. Land reclamation projects that require 20 – 25 m depth uses this configuration. The quality of compaction/stone column is controllable with a data logger supplied by OMS. Thence, the depth, compaction rate, time-related compaction and withdrawals can be measured and monitored. The data logger is also able to measure the gravel volume. For further details please click the link below: https://www.omsvibro.com/ground-improvement-techniques/

1. SOIL
IMPROVEMENT
EQUIPMENT
Pile Driving Equipment
www.omsvibro.de
Vibro Compaction & Vibro Replacement

2. VIBRO COMPACTION
2 / www.omsvibro.de Stone Column Equipment
OMS Pile Driving Equipment GmbH. provides a large selection of soil
improvement equipment such as “vibro compaction”, “vibro replacement”
and “vertical drain” depending on the project requirements.
Ground engineering plays an increasingly important role in social and industrial development, especially in connection
with major construction projects such as power stations or the expansion of infrastructure systems (railways, harbours,
airports etc.). The objectives of deep vibro compaction and vibro replacement are to improve the strength and deformation
characteristics of granular soils to a certain degree, so that structures can be supported safely and economically on or below
the improved ground surface.
Vibro compaction and vibro replacement can be another option as technical methods which is used for unfavourable soil
conditions that provide a transition between deep foundation and soil stabilisation. These methods increase the strength of
the weak layer and utilises the benefit of the improved resistance.
At this point, the OMS provides the right soil improvement equipment as a solution for its customers. The vibro compaction
and vibro replacement (stone columns) combined with vertical drain (wick drain) equipment of OMS plays a crucial role in
the market from Germany to Middle East, South East Asia and America Lands.
SOIL IMPROVEMENT METHODS
USING WITH OMS VIBROFLOTS
Vibrocompactionmethodismostlyusedinfinegranularsoilsthatarein
seismic risk and thus, the method itself is suitable for land reclamation
projects to mitigate the risk of liquefaction. This technique is for
densifying sand-like soils on site by means of an OMS Vibroflotation
probe. With the simultaneous vibration and saturation impact, loose
sand particles are repacked into a more compact state and lateral
confining pressure within the sand mass is increased.
Vibro compaction technique is most suitable for medium to coarse-
grained sand with a silt content. Cohesive soils consisting of silt and
clay material does not respond to vibratory compaction. The following
illustration explains the operation:
(Top Feed System)

3. 4 / www.omsvibro.de Stone Column Equipment
TANDEM
FREE HANGING
SINGLE
FREE HANGING
The tandem vibro compaction configuration
comprises of two vibroflotation probes
suspending from the same crane.
The single free hanging vibroflotation probe
consists of the same interchangeable parts
as the tandem set.
Typical Configuration of
Vibro Compaction:
Vibroflotation
Prob
Lifting
Head
Wear
Mantle
Elastomer
Water/Air
Jet Nozzle

4. 6 / www.omsvibro.de Stone Column Equipment
Tandem Free Hanging
The tandem vibro compaction configuration is consisting of two
vibroflotationprobessuspendingfromsamecrane.Itismostlypreferred
in land reclamation projects up to 20 - 25 m depth. The quality of
compaction/stone column can be monitored with a data logger supplied
byOMS.Hence,thedepth,compactionrate,timerelatedcompactionand
withdrawals as well as gravel volume can be measured and monitored.
Extension
Tube
Lifting
Head
Ropes
Spreader
Beam
Vibroflotation
Prob

5. 8 / www.omsvibro.de Stone Column Equipment
Single Free Hanging
The single free hanging vibroflotation probe comprises of the same
interchangeable parts as the tandem set. The depth of compaction
or stone column can be deeper, therefore projects that are medium
to small scale are suitable for to be executed with single free
hanging system. Compared to tandem system, crane capacity of
the vibroflotation probe is slightly smaller. On the other hand, just
like tandem system, the quality of compaction/stone column can be
monitored with a “data logger” so that, depth, compaction rate, time
related compaction and withdrawals as well as gravel volume can be
measured and monitored.

6. 10 / www.omsvibro.de Stone Column Equipment
VIBRO REPLACEMENT
(Bottom Feed System)
Vibro replacement stone column is a soil improvement system by which
vertical columns of compacted gravel are placed into soil. This is a
technique that builds load-bearing columns made out of gravel or crushed
stones in cohesive soil and granular soil with high fines content.
Vibro replacement stone columns have been used to improve a wide range
of soil from very soft clays and peat to materials marginally suitable for
the vibro compaction method. The equipment used for the vibro
replacement method is (other than for the vibro displacement method)
identical to the one used in the vibro compaction method.
For the operation of vibro replacement columns (stone/gravel columns)
“the bottom feed” process which feeds gravel to the end of the
vibroflotation probe with the aid of pressurised air. For the optimum
performance of this process, OMS has developed the vibroflotation probe
and gravel hooper with pressure chamber. This OMS vibroflotation probes
can be mounted on a existing drill rig or leader, crane or an excavator.

7. 12 / www.omsvibro.de Stone Column Equipment
BOTTOM FEED
FREE HANGING
Probe with a gravel hooper is
suspended by a crane.
DRILL RIG / LEADER
MOUNTED
Probe is easy to mount on an
existing drill rig or a leader.
EXCAVATOR
MOUNTED
Excavator selection is crucial
in this configuration.
Typical configuration of Vibro
Replacement by Stone Columns:

8. 14 / www.omsvibro.de Stone Column Equipment
Extension Tube
Extension Tube
Gravel
Box
Probe
Bucket
The OMS vibroflotation probe (bottom feed system) with gravel
hooper can be easily mounted on existing drill rig or a leader with a
supervisor from OMS technical team. This particular configuration is
advantageous since the drill rig or leader equipped with a pull-down
system, thus, allows additional pull-down pressure to be exerted
during penetration and compaction.
Drill Rig / Leader Mounted

9. 16 / www.omsvibro.de Stone Column Equipment
The OMS vibroflotation probe (bottom feed system) with a gravel
hooper suspended by a crane. For the configuration, the crane capacity
should be suitable to carry on suspended weights.
Bottom Feed Free Hanging

10. 18 / www.omsvibro.de Stone Column Equipment
This configuration is rather easy to mount on a customers’ excavator
by the help of OMS supervision team. It is also easy to operate and
cost friendly, however it comes with stone columns of limited depth.
Excavator selection plays an important role in this configuration.
Excavator Mounted
Bottom Feed Vibroflot
Gravel Hooper &
Feeding Mechanism
Extension Tube
Extension Tube
Extension
Arm
Yoke
Configuration for Bottom
Feed Vibroflotation
Probe

11. Technical
Specifications
Technical Spec. ÖVF 300 - 2 ÖVF 300 - 2 HF ÖVF 300 - 4 ÖVF 400 - 9 HF
Eccentric Moment (kgm) 2,026 2,026 4,03 9,1
Frequency (rpm) 3000/50 3600/60 3000/50 2100/35
Centrifugal Force (kN) 200 293 397,8 448,6
Power (kW) 90 108 192,5 131,25
Weight (kg) 1400 1400 2600 2200
Height (H) 2640 2640 3206 3250
Width (W) 348 348 375 434
Length (L) 520 520 722 660
Power Pack PP 200 PP 200 PP 265 PP 265
Output (kW) 147 147 195 195
Power Pack PP 200 PP 265
Output (kW) 147 195
Output (hP) 200 265
Oil Flow (lt/min) 360 360
Working Pressure (bar) 350 350
Diesel Tank Capacity (lt) 600 600
Hydraulic Oil Capacity (lt) 350 350
Weight and Dimensions
Length / L (mm) 3700 3700
Width / W (mm) 1590 1590
Height / H (mm) 1935 1935
Weight / kg 3150 3150
* Technical specifications are calculated based on maximum pressure and oilflow.
Required flow and pressure can be adjusted according to the requirement.
* Power packs are named according to horse power of its engine.
Depending on availability of engine, power pack names can be changed.
20 / www.omsvibro.de
L W
Gravel
Tube
Gravel
Reservoir
H

12. During the vibro compaction and vibro replacement operation number
of different site and parameters are automatically recorded. The
following parameters can be measured, saved and printed as a proof of
production and quantities:
ƒƒ Date
ƒƒ Site Name
ƒƒ Depth of Penetration
ƒƒ Compaction Point Reference Number
ƒƒ Compaction Rate (Pressure)
ƒƒ Volume of Gravel
22 / www.omsvibro.de Stone Column Equipment
Control Panel of
Data Loggers
OMS vibro compaction and
vibro replacement systems
can easily be adapted to any
data loggers of producers.
Monitors, which have a
membrane keypad and LCD
screen, are placed in a waterproof
slot. The operator can control the
compression process parameters
from the screen.
Fast Work ReportSearch
SettingsTouch ScreenTime Manage
Monitoring
Reporting

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linkedin.com/company/omsvibro/
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twitter.com/omsvibro
www.omsvibro.de
OMS Pile Driving Equipment GmbH.
Kleinewefersstraße 1
47803 Krefeld - Deutschland
oms@omsvibro.de