Boring - Trenchless International

Colombian Society digs deep
ISTT news
April 2010 - Trenchless International
A new Trenchless Technology Society has been established in Colombia.
The Colombian Institute of Subterranean Infrastructure Technologies and
Techniques will encourage the use of trenchless solutions in the vibrant
capital Bogotá and throughout the South American country.
Colombian representatives
were in attendance at the ISTT
International No-Dig in Toronto in early
2009. The affiliation of the Colombian
Institute of Subterranean Infrastructure
Technologies and Techniques (CISTT)
was agreed upon, as well as a decision to
celebrate the inaugural Colombian No-Dig
in June 2010. The first CISTT meeting was
held in 2009, attended by representatives
from companies including Empresas
Públicas de Medellín (EPM), Coninsa
RAMONH, SYE, VE, Herrenknecht,
SOLETANCHE, BESSAC, PAVCO and
FLOWTITE.
The ISTT and the CISTT have common
aims concerned with advancing
the science and practice of Trenchless
Technology.
The Colombian trenchless industry is
vibrant and growing. A successful course
was held at the EAFIT University (Escuela
de Administración y Finanzas de Medellín),
called: Tecnologías de Excavación sin
Zanja, or Trenchless Technology. The
course was attended by 26 engineers
belonging to several companies including
EPM, E.S.P, Coninsa – Ramón H – S.A.
and SYE Ingenieros.
A number of projects have utilised
Trenchless Technology to avoid surface
disruption and complete projects on time
and in budget. The CISTT will facilitate
the continued growth of the trenchless
industry.
Fucha – Tunjuelo Interceptor
The Fucha – Tunjuele Interceptor
will transport wastewater from La
Magdalena Reservoir to a sewerage
treatment plant. This interceptor is
9.4 kilometres long with a variable
overburden of 8 and 15 metres and
an internal diameter of 3.75 metres.
The tunnel was constructed using an
EPB Machine with precast segments,
beginning 26 February 2007 and finishing
in November 2009.
This contract, design and construction,
was executed by a consortium
composed by Soletanche – Bachy
– Conconcreto and the owner is the
EAAB (Empresa de Acueducto y
Alcantarillado de Bogotá).
Pilot tube microtunnelling in
Fontibón, Bogotá
This microtunnelling project was
designed and constructed in order
to solve a problem the lack of capacity
of a combined system and repair
serious deterioration. The solution
proposed was dividing stormwater
from wastewater. The total length was
21 kilometres, including 18 kilometres
installed by trenchless methods
through soft clay and sand. The diameter
ranged from 400 to 1,800 mm.
Prado Centro project
The relining of a 149 metre tunnel
system, with an external diameter
of 1,700 mm, under one of the most
important hospitals in Medellin was
completed by hand excavation with
steel support and the construction of
a parallel pipeline to collect laterals
from the hospital.
The advantages of this project
include:
• Less environmental and social
impact
• Pilot project in Medellín
• Less risk during construction
• Standardised process,
mechanical strength
guaranteed
• Parking and cab zone
• Permanent access to the
hospital.
CIPP in Medellín – La Hueso
Creek Project
This CIPP project to rehabilitate
the south pipe of La Hueso creek
with a total length of 1,067 metres
(3,500 feet) involved three different
internal diameters: 700 mm, 800 mm,
and 900 mm.
North Interceptor
microtunnelling project in
Medellín
The North Interceptor will transport
the wastewater and stormwater of
several neighbourhoods to the local
sewerage treatment plant. The
pipeline will cross four rivers and
necessitates 4.5 kilometres of branch
interceptors.
Construction of the 7.7 kilometre
interceptor, with internal diameters of
1.8, 2.2 and 2.4 metres, will be completed
in two sections;
Section one – Caribe Neighbourhood
to Metro System workshops
Section two – Western Regional
roadway (projected) to treatment
plant, incorporating four river
crossings
The average volume is 6.5 cubic
metres per second and the maximum
volume including all connections is
13.5 cubic metres per second.
Río Bogotá – Tunjuelo –
Canoas microtunnelling
interceptor
The Río Bogotá – Tunjuelo –
Canoas is an interceptor to continue
the general sanitation project of the
Bogotá River and its creeks and reservoirs.
The length of the interceptor
is 8.1 kilometres with an internal
diameter of 4.2 metres and external
diameter of 4.8 metres, to be
installed in soft soil. The minimum
overburden is 12 metres and the
maximum overburden is 32 metres.
Colombia is bordered by Venezuela,
Brazil, Ecuador, Peru and Panama.
Population: 45 million
istt news
April 2010 - Trenchless International
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