News and Articles
Oct 24, 2008
Article
Soil electromagnetic mapping for enhanced GPR utility location
1. INTRODUCTIONThe Mapping the Underworld (MTU) project combines the expertise of four UK universities in an effort to provide new geophysical utility location equipment that will dramatically improve on the accuracy of current equipment (see [1] for more information). In order to achieve this goal, it has been recognised that there is a need to optimise the usefulness of data output by GPR equipment through knowledge of the electromagnetic (EM) properties of the soil. This aspect of the project can be considered an essential element as it is soil, and in particular the clay fraction, that determines the degree of signal loss that will occur and the velocity of the signal in the ground.
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Oct 23, 2008
News
Robbins EPBM sees the light in Delhi
After five months of tunneling, a Robbins EPBM has completed its first bore in New Delhi. The machine is one of two Robbins EPBMs boring parallel 2.0 km (1.2 mi) long tunnels for the second phase of India’s New Delhi Metro Extension Project. A total of four machines are boring a new 5.3 km (3.3 mi) line between the Udyog Bhawan and Green Park areas for the Continental Engineering Corporation (CEC)/ Soma JV.
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Oct 20, 2008
News
Mexico's Largest EPB to be supplied by Robbins
A new 10.2 m (33.5 ft) diameter Robbins Earth Pressure Balance Machine (EPBM) is planned to tunnel directly underneath urban areas for Mexico City Metro’s Line 12. The machine will be the largest diameter TBM ever to bore in Mexico.
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Oct 17, 2008
News
NASTT & PUG Present CIPP Good Practices Course
The North American Society for Trenchless Technology (NASTT) and the Northern California Pipe Users Group (PUG) are pleased to offer a special one-day Cured-in-Place-Pipe (CIPP) Good Practices Course, Tues., Oct. 28, 2008, in Martinez, Calif. at the offices of Central Contra Costa Sanitary District.
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Oct 15, 2008
News
TT-UK stand pulled in visitors at NO-DIG Live 2008
Following the success of the NO-DIG event held in 2006 at the Royal Showground in Warwickshire UK, the exhibition organisers Westrade Fair decided that due to ease of vehicular access, good on site parking and its central geographical location, to again hold the 9th bi-annual Trenchless Technology Exhibition (NO-DIG) at this prestigious showground.
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Oct 13, 2008
News
Insituform lands $21M contracts for project in India
Insituform Technologies, Inc. (Nasdaq Global Select Market: INSU) has won two new sewer rehabilitation contracts in Delhi, India, totaling $21.1 million.
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Oct 08, 2008
Article
Analytical study on the ground movement caused by pipe bursting
Trenchless pipe replacement technology by ‘EXPANDIT’ using hydraulic expansion was established in March, 2006 in Japan, and we received the construction technology certificate of JIWET (Japan Institute of Wastewater Engineering Technology).This trenchless technology of pipe replacement has much effective features. However, many sewer administrators would consider that pipe bursting might damage to adjacent pipes or structures, therefore this pipe replacement technology cannot be used widely for sewer pipes in Japan. In order to solve such problems, we performed experimental pipe bursting operation focused on the ground movement at 6 span’s model pipelines in 2005. Consequently, the relation between a distance from existing pipe to measuring point and the amount of ground movement at that point has been understood, and estimation charts of the ground movement were attained.In this paper, we describe the numerical study about the ground movement associated with the amount of radial expansion, while these data following advancing analysis of the data were analyzed in detail, estimation of the ground movement was available. One example of vertical ground movement by pipe bursting operation can be described.
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Oct 02, 2008
News
Giant Robbins machine embarks on hydropower tunnel
On September 18, 2008 the 12.43 m (40.1 ft) diameter Robbins machine was launched on a 16.7 km (10.4 mi) long hydropower tunnel in Sichuan Province, China. The machine will bore one of four headrace tunnels, which will draw water from the nearby Yalong River, a tributary of the Yangtze. The large TBM will join another 7.2 m (23.7 ft) diameter Robbins machine, which was launched earlier in 2008 to bore a drainage tunnel on the same project.
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Sep 29, 2008
News
Watson-Marlow peristaltic pumps in breakthrough application
South West Water is using a peristaltic pump from Watson-Marlow Bredel for dosing coagulant into raw reservoir water for purification purposes. It is thought to be the first time peristaltic technology has been used on a coagulant application, certainly within the southwest region.
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Sep 24, 2008
News
Herrenknecht giants reach their targets in Shanghai
Two Herrenknecht tunnel boring machines, the largest in the world with a diameter of 15.43 meters, successfully completed their crossing beneath the Yangtze River in Shanghai. On May 28 and September 5, 2008, the two Mixshields met their target shafts precisely on the Yangtze river island Changxiang – far ahead of schedule. The 7,472 meter long tunnels connecting the Shanghai district of Pudong with Changxiang island have created efficient transport systems in only 20 months.
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Sep 18, 2008
News
Ditch Witch and Equipment Web Services join forces to offer exclusive used inventory site for Ditch Witch dealers
The Ditch Witch® organization, the industry leader in the design and manufacture of underground construction equipment, along with Equipment Web Services (EWS), a division of Dominion Enterprises, announce the launch of DitchWitchUsed.com.
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Sep 15, 2008
News
Experts and decision-makers from all over the world look for collective resolutions to reduce loss of drinking water
Prof. Dr.-Ing. Stein & Partner GmbH provides sustainable education and training of market players with web-based training portal
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Sep 11, 2008
News
Essential investment for the future: Thames Water outlines £6.5 billion plan for water and sewerage services
Thames Water has published proposals for its largest ever investment programme while still keeping customers’ bills below the industry average for the next five years.
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Sep 09, 2008
News
Robbins TBM overcomes high overburden at Olmos
A 5.3 m (17.4 ft) Robbins TBM is standing up to the pressure in Peru. The Main Beam machine is boring a 13.9 km (8.6 mi) long tunnel through the Andes Mountains, beneath up to 2,000 m (6,500 ft) of hard, potentially squeezing rock.
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Sep 05, 2008
Article
Nordic Steel Mill solution reduces water treatment costs
Transporting mill scale with water to create a continuous recycling loop reduces costs by eliminating much manual handling and allowing continuous operation in less space than traditional solutions. Mills in Northern Europe like Outokumpu’s plant in Avesta, Sweden have been turning to Nordic Water for solutions based on screw dewaterers, lamella separators and Dynasand filters.
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Sep 03, 2008
News
Treated sewage sludge
Water UK comments on an article regarding the use of treated sewage sludge (biosolids) in agriculture which appeared in the British newspaper Guardian on 29 August 2008.
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Sep 01, 2008
News
Aarsleff to build water treatment plant in Sri Lanka
Aarsleff has won a contract for the building of a new, large potable water treatment plant on the outskirts of Sri Lanka’s capital Colombo. The plant will have a daily water treatment capacity of 180,000 cubic metres of surface water from the river Kelani. The plant is going to supply 450,000 inhabitants with clean drinking water.
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Aug 29, 2008
News
The world loses 45 million cubic metres of water every day - UNW-DPC looks for applying solutions
Reduction of the loss of drinking water is the overall topic of the UNW-DPC workshop taking place from 3-5 September. Reducing the loss of drinking water could provide nearly 90 million people with fresh water without increasing the demand on water resources. High level experts and decision makers from all over the world will discuss possible solutions at the UN Campus in Bonn.
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Aug 28, 2008
News
Borealis and Borouge present latest developments for sustainable plastic pipe solutions at Plastics Pipes Conference XIV in Budapest
Borealis and Borouge, leading providers of innovative value creating plastic pipe solutions, will present a series of papers outlining their latest polyolefin technology developments and cutting-edge initiatives to delegates at the XIV Plastics Pipes Conference in Budapest, 22-24 September 2008.
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Aug 25, 2008
News
NASTT Sewer Laterals Rehabilitation & Replacement Good Practices Course
The South Tahoe Public Utility District (STPUD) is pleased to offer a special one-day Sewer Laterals Rehabilitation & Replacement Good Practices Course, Wed., Sept. 3, 2008, at its offices in South Lake Tahoe, California. The training is developed and conducted by the North American Society for Trenchless Technology (NASTT).
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Aug 20, 2008
News
Key items for Plastic Pipes Conference
More information is being released about some of the technical papers that will be presented at Plastics Pipes XIV. This Conference brings together the global plastic pipe community and will be held from 22 - 24 September 2008 at the Marriott Hotel in Budapest.
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Aug 18, 2008
News
Hatch Mott MacDonald opens offices in Tulsa, OK and Houston, TX
Hatch Mott MacDonald (HMM), is pleased to announce two new office openings to support its rapidly growing pipeline business. New offices in Oklahoma and Texas will provide the firm an expanded geographic platform to serve existing and potential clients for gas and product pipeline engineering services. Both offices are strategically located with respect to proposed and existing pipeline corridors, and will allow the firm to attract skilled pipeline professionals who reside in these areas. These openings extend Hatch Mott MacDonald’s reach in the South, expanding our network of offices in North America to 56 locations.
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Aug 15, 2008
Article
Drifting & Tunneling - New Sandvik Alpha 330 tool system creates synergy between 20-kW rock drills & 45-mm drill bits
An extraordinary 30 to 80 per cent increase in rod life, more accurate collaring and straighter blast-holes are the main benefits of Alpha 330, a brand new tool system developed by Sandvik. Designed to exploit the power of 20-kW drifters to drill small-diameter holes faster, Alpha 330 signals a new era of rock-tool economy.
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Aug 13, 2008
News
New residential grinder eliminates sewage blockages
Twenty-five years experience in grinder pump development has now resulted in the Flygt DXG residential grinder that turns all solid matter into sludge.
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Aug 11, 2008
News
Clean water for the Baltic Sea
Kaliningrad with its half a million inhabitants is a Russian exclave situated at the Baltic Sea between Poland and Lithuania. Given this relatively large number of inhabitants it is understandable that the lack of a water treatment plant is a great concern to the public as well as to surrounding countries. Daily over 250,000 m³ of wastewater flow into the Baltic Sea polluting seawater and the Polish and Lithuanian coasts.
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