Fugro provides integrated consultancy, data acquisition and construction support that enables in-

formed decisions to be made on the optimum location and design of onshore wind farms.

Sabloal Valea Dacilor Wind Farm

Project: Sabloal Valea Dacilor Wind Farm Location: Valea Dacilor, near Constanta Romania Client: ARCADIS Consult GmbH / RWE

The Sabloal Wind Farm is currently planned to be one of

the largest on-shore wind farms in South-East Europe.

A total number of 105 wind turbines will deliver more

than 200 MW power. Spanning over an area of about 20

x 10 km with very favorable wind conditions but also

challenging geological conditions, the project is a tech-

nical and logistical assignment.

Purpose

FUGRO was asked by ARCADIS, consultant to RWE and

responsible for the overall geotechnical site investigation and

foundation recommendations, to assist with technical sup-

port including Cone Penetration Testing and In-situ Testing.

This is relevant for the design of the wind turbine foundations

and associated infrastructure.

The dimensions and heights of the turbines have grown over

the past years. Consequently, the requirements for soil in-

vestigations have changed. This includes the requirement

for investigations to greater depths as well as in-situ determi-

nation of dynamic soil properties (P & S – wave velocity, G

and E – modulus, Poisson ratio). In Romania, this is even

more important due to the known seismic activities in the

region.

Besides the proposed 105 wind turbines, the subsoil condi-

tions for the associated infrastructure including over 150 km

of roads, more than 300 km cables routes, 13 bridges and

substations had to be investigated.

On

sho

re Geo

techn

ics - Pro

ject Descrip

tion

Fugro’s heavy-duty 8x8 and track-mounted CPT equipment

Vast Romanian project site

CPT interior with data acquisition unit

FUGRO CONSULT GMBH

Wolfener Strasse 36V 12681 Berlin

Germany

Tel.: +49 (0)30 - 93651 364 Email: fugro@fugro.de

More information available at WWW.FUGRO.DE © Fugro 2010 - G4-2-28e

Sabloal Valea Dacilor Wind Farm

Realization

Starting with a basic investigation program with 3 CPT’s at

each footing of the proposed 105 wind turbine locations the

scope further increased during execution of the works. The

drilling performed by another contractor could not keep up

with FUGRO’s program and CPT’s were added to feed the

design needs running in parallel.

At peak times, FUGRO was on site with two CPT rigs work-

ing in parallel, accomplishing up to 18 CPT’s per day. Due

to the begin of winter season, drilling work had to be stopped

several times. Fugro on the other side was able to continue

with the testing program using our track mounted CPT

equipment. The entire field work campaign and the related

documentation was executed in only four weeks.

Completing the project in January 2010, FUGRO again

proved to be a strong and reliable partner in the field of soil

investigation and in-situ testing in challenging environments

and with tight time schedules .

Overview / Scope of Work

400 Cone Penetration Tests (CPT)

10 locations with Seismic Cone Penetration Testing

(SCPT)

15 In-situ Thermal Conductivity Tests for energy cable

design

275 Test Pits with soil sampling and detailed soil de-

scription

275 Dynamic Plate Load Tests

55 Static Plate Load Tests

Factual Data Report

Hammer blow for Seismic CPT

Typical shear wave velocity diagram obtained from SCPT