A microtunnelling machine has been used to protect the beautiful rural landscape of South Yorkshire, UK, and successfully install a new gas pipeline.Dr.-Ing. Gregor Nieder
A novel steering technology from Bohrtec, extending the range of applications for guided auger boring techniques, has been used for the first time on two pipe eating projects in Germany.Jo Parker
Advances in underground utility location could mean enormous savings – in economic, environmental and social terms. Here Jo Parker from Watershed Associates discusses some of the latest technological research and development emerging from the UK.Dr Samuel T. Ariaratnam
People worldwide are grappling with the effects of climate change. An emissions calculator tool has been developed to enable the comparison of the environmental impact of different utility installation methods.Meinolf Rameil TT-Group
As much of the world’s underground infrastructure has reached the end of its design life, many cities are aware that they have a major problem lurking under their streets. Some of these cities have been compelled to take action. Many others are not doing much until there is no other alternative.
All 15 kilometres of old asbestos cement pipe currently supplying Durban’s CBD, located in the eThekwini Municipality on the east coast of South Africa, with water will be replaced with new High Density Polyethylene (HDPE) pipe via pipe cracking.
At IFAT 2008, the 15th International Trade Fair for Water, Sewage, Refuse and Recycling, ABS Trenchless successfully introduced the world’s first large pipe bursting system with a rope as the pulling medium, Rope Bursting System (RBS), with a pulling force of more than 1,000 kN.
Cured-in-place pipe (CIPP) systems create a close-fit ‘pipe-within-a-pipe’. A variety of CIPP systems are available, the common feature being the use of a fabric tube impregnated with resin. The tube is inserted into the existing pipeline and inflated against the pipe wall, then cured most commonly at ambient temperature, by re-circulating hot water, steam or ultra-violet light.
A small but innovative relining project has proven the adaptability and versatility of Trenchless Technology to achieve a multitude of different and challenging tasks.
Applied Felts cultivates customer relationships through the provision of a consistent quality cured-in-place pipe system – tested at every stage of the manufacture process.
Water from the Baltic Sea was leaking into the broken sewerage networks of the city of Norrköping, Sweden – with expensive sewer pumps working 24 hours a day. CIPP came to the rescue.
Approximately 120 infrastructure projects are underway focused on Oahu’s wastewater treatment plants, pump stations and collection system, in Honolulu Hawaii. These projects are part of $US516 million of ongoing wastewater projects.
In Australia and New Zealand the use of various trenchless techniques has developed over almost forty years. Conventional pipe-cracking, or pipe-bursting, and horizontal boring techniques for new infrastructure installations have had a considerable history and success; and pipe rehabilitation and renovation has been in use for over thirty years in the region.
The successful establishment of the trenchless industry in Australasia has been supported and promoted by the peak industry organisation, the Australasian Society for Trenchless Technology. The ASTT was incorporated in 1991, and has been affiliated with the ISTT since that time. Membership in the ASTT has grown from 35 when the ASTT was inaugurated, to more than 100 corporate members in 2009.
Victoria's capital city Melbourne – playing host to the 8th National ASTT Conference and Exhibition – is also undergoing innovative and necessary water and wastewater tunnelling projects. Here Trenchless International reviews two of the projects involving tunnel boring machines.
The innovative trenchless industry has created machinery, products and techniques to facilitate the renovation and repair of underground infrastructure. In Australasia, Rib Loc has been at the forefront of these developments.Paul Balemi – JB Contractors Ltd, Atish Chandra – Franklin District Council and Ross Kernot – AWT New Zealand Ltd
Auckland-based JB Contractors Ltd has earned a reputation for innovation since its inception more than 50 years ago. Recently, the company drew on innovative pipe bursting methodology for a challenging project for Franklin District Council. AWT New Zealand Ltd was the project consultant.
In the mid-1990s HERMES Technologie was already making a name in Japan for its own processes for rehabilitating buried pipes, sewer shafts and shaft cover frames. Further demonstrations, appearances at shows and participation in conferences in Korea, China and Australia then led to a request, via its English branch, from Schwerte on the Ruhr to demonstrate the M-Coating rehabilitation process in manhole shafts in Singapore.
Introducing the all new Barbco Maxi Rig
Hanlyma, founded in 2003, is one of China’s leading manufacturers of horizontal directional drilling (HDD) rigs. Hanlyma spokesperson Jerry Liang said the company is very excited to be exhibiting at Trenchless Australasia 2009 – the 8th National ASTT Conference and Exhibition.
Ofwat, the water and sewerage authority for England and Wales, has published the Ofwat Draft Determination that would see the average household bill go down, together with investment of almost £21 billion over five years, however the response from water companies has been mixed.