Articles

Here you will find the latest articles on UNITRACC.

May 18, 2017

Technische Akademie Hannover e.V.

Dr.-Ing. Dipl.-Math. Igor Borovsky

Der Branchen-Treff der Kanalsanierer

15. Deutscher Schlauchlinertag und 6. Deutscher Reparaturtag in Mainz

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Mar 22, 2017

Ruhr-Universität Bochum

Meike Drießen

Navigating underground

What will happen to the buildings above ground if a tunnel boring machine moves beneath them? Engineers calculate the answer to this question using artificial intelligence.

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Aug 29, 2016

S & P Consult GmbH

Dr.-Ing. Robert Stein

The next generation of Asset Management

STATUS is a stochastic "ageing model" for rehabilitation & maintenance strategy analysis, development and optimisation, which has been successfully applied in Germany for more than 14 years.

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Aug 12, 2016

European Association for Ductile Iron Pipe Systems · EADIPS®/ Fachgemeinschaft Guss-Rohrsysteme (FGR®) e.V.

Dr.-Ing. Jürgen Rammelsberg

The story of drinking water systems through the centuries

The “50th” anniversary issue of the EADIPS®/ FGR® annual journal has been an occasion to look back over the history of 500 years of drinking water transport and distribution. This area of life is inseparably linked to the traditional material of “cast iron”: it has put its stamp on the development of drinking water supply for half a millennium but, with a constant influx of improvements, optimisations and innovations over this timespan, it has nevertheless remained ever young. The cast iron pipe industry, in collaboration with its users, has always managed to keep abreast of the latest state of the art with a modern and sustainable piping system comprising pipes, fittings and valves.

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Feb 23, 2016

DALROD (Uk) Ltd

Bryan Lord

Case study - UV cured lining project wins the day for DALROD

DALROD recently ventured into new pipe-lining territory using, for the first time, UV cured lining on a project for client Peterborough City Council (PCC)

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Jan 28, 2016

S & P Consult GmbH

Dr.-Ing. Robert Stein

Taking curves with confidence

Finding the weakest link and providing new solutions can help reduce pipe damage and increase scope for pipe-jacking projects

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Dec 23, 2015

NIVUS GmbH

General Manager Udo Steppe

Flow Measurement using Cable Lengths of 800 Metres

Challenging application in dam wall requires unusual cable lengths.

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Dec 03, 2015

Herrenknecht AG

Achim Kühn

Mixshield Bärlinde closes east-west gap in Berlin Mitte

Upon reaching its final position at the Brandenburg Gate on 10/14/2015 the Mixshield "Bärlinde" has successfully completed its mission in Berlin. Behind the tunnel boring machine (TBM) are two 1,620 meter long parallel tubes, built through the historic center of the capital.

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Sep 14, 2015

Herrenknecht AG

Achim Kühn

Variable Density Technology: Game Changer for Kuala Lumpur

Kuala Lumpur's karst soil riddled with fissures and crevices is a real challenge for tunnel builders. Herrenknecht, the global market leader in mechanized tunnelling technology, developed for Klang Valley MRT Project in Malaysia´s capital in collaboration with MMC-Gamuda Joint Venture a new type of machine. The Variable Density tunnel boring machine can be operated in four different tunnelling modes and thus perfectly adapted to the different conditions. After nearly two years of tunnelling, in mid-April 9.5 kilometers of tunnel were completed and the new technology had proven itself. A major breakthrough for Kuala Lumpur’s Metro and for mechanized tunnelling in difficult soft ground.

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Aug 11, 2015

Herrenknecht AG

Achim Kühn

Eight TBM ladies set the pace in London tunnel marathon

With the breakthrough of Herrenknecht tunnel borer "Victoria" on May 23, 2015, eight Herrenknecht tunnel boring machines magnificently completed a unique mission at Europe's largest infrastructure construction project. In just three years construction crews from three UK and European consortia navigated the high-tech borers from Schwanau through the center of London. Citizens and politicians are proud of the engineering achievements. 42 kilometers of high quality tunnels have been created under one of the world’s busiest cities. Crossrail will carry an estimated 200 million passengers per year.

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Jul 08, 2015

S & P Consult GmbH

Dr.-Ing. Robert Stein

Evaluation models for the assessment of the structural and operational condition of drain and sewer systems – Part III

This is the third and last part of the technical report series “Evaluation models for the assessment of the structural and operational condition of drain and sewer systems“. It deals with the results of the analysis and the summary of all survey events.

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Jun 05, 2015

S & P Consult GmbH

Dr.-Ing. Robert Stein

Evaluation models for the assessment of the structural and operational condition of drain and sewer systems – Part II

This is the second part of the technical report series “Evaluation models for the assessment of the structural and operational condition of drain and sewer systems“. It is about the advanced evaluation model STATUS Sewer.

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May 06, 2015

S & P Consult GmbH

Dr.-Ing. Robert Stein

Evaluation models for the assessment of the structural and operational condition of drain and sewer systems – Part I

This is the first contribution of a three-part series that deals with the following approach: "Evaluation models for the assessment of the structural and operational condition of drain and sewer systems". It is motivated by the fact that evaluation models serve as helpful tools for an assessment of the current structural/operational condition of a drain and sewer system and for establishing of a benchmark for prioritizing maintenance and rehabilitation activities based on data acquired from inspections of structural/ operational conditions plus possible influencing conditions.

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Jan 07, 2015

SEKISUI SPR Group

Lena Tiedeken

Quality proves its worth

Sewer rehabilitation with SPR™ technology in Budapest, Hungary

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Nov 19, 2014

HOBAS Engineering GmbH

Jessica Maier

HOBAS® XXL Tank DN 3600 Protects Dąbrowa Górnicza Against Floods

In the view of environmental influences and the expansion of urban areas, the issue of flood prevention becomes a key task for urban infrastructure. HOBAS Tanks have become a widely accepted remedy for this problem – such as a 2,410 m³ large retention system DN 3600 that has been installed in Poland in 2014.

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Oct 06, 2014

S&P Consult GmbH

Dr.-Ing. Robert Stein

Using PVC for the rehabilitation of sewers

Since the early 1970s, we have developed from being a prosperity-oriented and throwaway society to become more environmentally aware, though this same society adopts a highly critical attitude towards some real achievements. Why should PVC, of all things, be such a highly controversial material? This is mainly because it has been known, since the late 1980s, that many chloroorganic compounds, such as propellant gas, paint, solvents and plastics are toxic, carcinogenic, genetically harmful and damage the environment. Since then, the Green Party has pushed for the chlorine industry to be phased out. In terms of chemical structure, PVC contains a high proportion of chlorine, which has led to it being caught up in the political crossfire.

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Aug 15, 2014

McCrometer, Inc.

Michelle Pawlowicz

FPI Mag Flow Meter

Next Generation Mag Meter Measuring Flow in a Pump Station

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Jul 30, 2014

Inspection

Pure Technologies Ltd.

What`s in the Numbers?

A Review and Analysis of More than 400 Miles of Force Main Inspection and Condition Assessment Data.

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Jul 24, 2014

Pipe installation

Reinert-Ritz GmbH

Dragisa Dubocanin

Water pipeline from Turkey to Cyprus - 1,600 mm diameter PE 100 pipeline and its flange-technology solution

The use of polyethylene pressure pipelines is gaining ever greater international regard and becoming ever more sophisticated.The reasons are diverse, and include this material‘s excellent resistance to corrosion, the flexibility of PE 100 pipes, and the resultant installation and cost benefits.

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Jul 08, 2014

Lining with pipes

SEKISUI SPR Group

Lena Zemke

NORDIPIPE as pull-in version for trenchless rehabilitation of drinking water pipes

Pilot project with CIPP technology of SEKISUI SPR in Shumen, Bulgaria - The challenges often involved in drinking water rehabilitation projects are the available time window, residual flow capacity after the rehabilitation, diameter and length to be renewed. Other factors are the capacity to negotiate bends and local contruction site conditions.

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Jun 16, 2014

Shafts and excavations

Herrenknecht AG

Raise Boring Rigs for shafts up to 2,000 meter depth

With growing demand for raw materials, mines are applying increasing effort and expense to open up deep and difficult to access resources. With this in mind, the new Herrenknecht product portfolio of Raise Boring Rigs allows the optimal drilling of shafts with larger diametersat depths of up to 2,000 meters. In the new and further development of Raise Boring Rigs, Herrenknecht draws on proven technologies and components as well as on extensive knowhow in the area of mechanized tunnelling technology.

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Mar 28, 2014

Trenchless installation of pipelines

Herrenknecht AG

Achim Kühn

HDD long distance record in Scandinavia

Top performance at minus 27 degrees Celsius

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Nov 22, 2013

Jacking by machine

The Robbins Company

Dean Workman

Continuous Conveyor Design in EPB TBM Applications

While continuous conveyors have become the muck removal system of choice in long, hard rock TBM tunnels, they have gained acceptance in soft ground tunnels only recently. Soft ground, EPB TBM-driven tunnels provide a challenging environment for continuous conveyors due to the variety of materials present. The design of both horizontal and vertical soft ground conveyors will vary depending on the types of excavated material, amount of water present, and other factors. This paper will address the challenges of effective conveyance in different ground materials by analyzing conveyor performance in several recent EPB TBM projects.

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Oct 28, 2013

Xylem Inc.

Water and Urban Resilience

Flooding is one of the most universal – and destructive – challenges facing cities around the world. World Bank research suggests that floods are the most frequent of all natural disasters and that the number of flood events is rising rapidly. In 2010 alone, 178 million people were affected by floods, with losses exceeding $40 billion.

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Sep 10, 2013

Tunnel boring machine

The Robbins Company

Lok Home

Modern Large Diameter Rock Tunnels

Recent experience and development of Hard Rock Tunnel Boring on most large diameter tunnels, especially above 8m in diameter, has shown that improved ground support is a prerequisite to improved monthly advance rates. The opinions and comments presented in this paper are heavily influenced by recent experiences on the 12.4m diameter Jinping Project, the 10m diameter AMR project and the 14.4m diameter Niagara Project.

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