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Welcome to The Geotechnical &
Engineering Summit by DFI
Topic: Latest developments in diaphragm wall technology – focus in Middle East projects
Speaker Name: Davide Gorrasi
Email: [email protected]
Introduction
Main concept: a global approach to optimize performances, cost of equipment ownership and job site efficiency.
Summary of East Port Said Project
How a good training can successfully influence job site performances
Technological solutions to increase reliability of equipment
Machine design to improve efficiency and reduce maintenance costs
Solutions to limit downtimes in the job site
East Port Said Project - Job Site Layout
East Port Said Project - Job Site Layout
East Port Said Project – Ground Conditions
0-18 m: silty sand medium dense
18-60 m:fat clay
61-67 m:silty sand very dense
East Port Said Project - Working Summary
Job completed in 80 days
Machine Availability = 98%
East Port Said Project – Equipments for DW
DW excavation with 200 t Hydromill Pre-excavation with 70 t Heavy Duty Crane
The support of a Field Service Team
Solutions to protect from contamination
Hydraulic System
dedicated to the
Hydromill Module
Chance to recover the module and to mobilizethe base machine in the site
Low refurbishing costs (contamination only inthe module system)
Reduction of job site down-time due to aquicker problem solving
Spare parts stock less expensive (approx. -20%)
Solutions to protect from contamination
Independent Filtering on
each hydraulic return lineDrain Tank c/w filters Special Filters
Design Solutions with the Users in Mind
Rope change control
Transportation control
Teeth change control
Emergency Lifting
System
Higher performances & lower maintenance costs
Cutting Units with the highest torque and motor integrated with reducer, without any intermediate shaft:
• to increase performances, especially on hard soils
• to reduce maintenance costs
• to make assembly easier
Higher performances & lower maintenance costs
N° of engine hours for STD maintenance
1500 h
STD Maintenance Costsfor customer (3000 h)
- 35% vs. maincompetitor
Cutting Motors tested in hardest conditions
Sound granite with UCS up to 150 Mpa
Cutting Motors tested with widest thickness
1800 mm DW thickness
Remote Control to reduce downtime
N. of connected
machines
Fleet localization
Event statistics
Machine ListLast 3 months
production
In addition:
analytics pages
with KPIs
dedicated to
hydromill
technology
Conclusions
In diaphragm wall technology, even more than in other sectors, Contractors have to identify the equipment they need cost-effectively, understanding the real return on investment.
This means to give the right evaluation about total cost of ownership (owning costs, operations costs, maintenance costs), and also to weight how the use of a specific equipment can reduce the downtime in the job site.
THANK YOU FOR ATTENDING!
