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31.01.2019 (3912 Clicks)

Implenia is awarded the Contract for the third Section of the Grand Paris Express with Avenir Partners

New construction of Line 17 | Le Bourget airport to be linked to the metro network | Total order volume of some EUR 440 million (CHF 500 million)

30.01.2019 (4740 Clicks)

Preview Bauma Munich: Bauer Maschinen Group presents state-of-the-art Technology for Specialist Foundation Engineering

Whether it is drilling, diaphragm wall, piling or mixing plant technology, visitors to the Bauma booth FN 520 (open-air area north) of the Bauer Maschinen Group will once again experience the entire range of specialist foundation technology in April. 'As we are a global player with Bavarian roots, Bauma in Munich is of course always a very special highlight,' explains Dr. Ruediger Kaub, Managing Director of Bauer Maschinen GmbH. In addition to the core range of Bauer rotary drilling rigs, the MC series of duty-cycle cranes, diaphragm wall technology with cutters and grabs, the subsidiaries Klemm, Prakla, Hausherr, RTG, ABS Trenchless and MAT will also be showing off their equipment and systems.

30.01.2019 (4247 Clicks)

Construction Machinery Industry on a high in bauma Year — CEO Dittrich: Dare to drive more digitization!

• Above-average willingness to invest and positive mood
• Shortage of skilled workers is the biggest challenge
• Digitization with room for improvement

30.01.2019 (3359 Clicks)

Vale announces the Decommissioning of all its Upstream Tailings Dams

Vale S.A. informs that it has presented to the Brazilian authorities its plan to decommission all its dams built by the upstream method.

30.01.2019 (4152 Clicks)

Herrenknecht's E-Power Pipe nominated for bauma Innovation Award 2019

E-Power Pipe® is a trenchless method for the economic and environmentally friendly installation of underground cables. The new development from Herrenknecht has been nominated for the bauma Innovation Award 2019 in the 'Machine” category. Trenchless technology offers significant advantages over the conventional open-cut method. The innovative procedure closes a technical gap because it allows small diameter drives with ten times greater lengths, shallower depths as well as high precision and speed.

With E-Power Pipe, Herrenknecht has developed a new method to quickly and securely install small-diameter cable protection pipes underground over long distances of more than a kilometer. The innovative method has purposefully modified and further developed proven drilling technologies so that in the future, underground cables can be installed trenchlessly and close to the surface at a depth of between two and four meters with minimal intervention in the landscape.

The heart of the system is the fully remote controlled tunnel boring machine AVNS350XB, which has an excavation diameter of 505 mm and is designed for drive lengths of more than 1,000 m. The machine can keep to the planned alignment with high precision and thus cross safely under existing infrastructure such as pipelines, roads, railways or smaller bodies of water. Individual boreholes can be placed a small distance apart of only 1 – 2 m, so several lines can be installed in parallel.

The tunnelling machine is equipped with a jet pump and an integrated hydraulic power unit. With conventional methods, space restrictions limited muck removal over longer sections and as a result also limited the drive lengths possible. Through the use of the jet pump for transporting the muck, up to 10 times longer tunnelling distances can be realized at high speeds in the small diameter range.

The two-stage installation method E-Power Pipe

At the starting point, a newly developed push and pull unit is installed and its thrust is used to push the jacking pipes and the TBM along the specified route in the direction of the target point. The borehole remains securely supported by the machine and the jacking pipes the whole time. After breakthrough at the target point, the TBM is separated from the jacking pipes. Subsequently, the prefabricated cable protection pipe is connected to the jacking pipes still located in the borehole and pulled back and thus into the borehole by the push and pull unit in the launch shaft at the other end. After installation of the protection pipe, the E-Power Pipe mission is complete. Final insertion of the underground cables is carried out by appropriately specialized companies.

The method innovation involved the development of new, extended jacking pipes that allow a much more continuous advance. Herrenknecht developed an appropriate push and pull unit with a 10 m stroke and a push and pull force of 350 t specifically for these jacking pipes. The technology is based on a rack and pinion guide, powered by electric motors. As a result, the innovative concept ensures higher installation performance and greater acceptance thanks to lower noise emissions.

The efficiency of E-Power Pipe has already been successfully demonstrated in pilot projects. Daily best performances were achieved of 184 m during tunnelling and 266 m when the protective pipe was pulled in. The development of the method received funding from the Federal Ministry of Economics and Energy (BMWi research project IBoTec) and was carried out by Herrenknecht in cooperation with Amprion GmbH and with RWTH Aachen.

Environmentally friendly alternative to the open-cut method

The installation of underground cables using the E-Power Pipe method is a ground-conserving alternative to the conventional open-cut method. Due to the trenchless installation method, earth movements are reduced at the places where HVDC cables have to be connected later. This can mean a reduction of about 90 % in relation to the entire alignment. Installation takes place without any environmental impact over long distances, since the surfaces and the soil structure are left largely untouched. The use of construction machinery and trucks is also significantly reduced in this way, as are noise and emissions.

Trenchless technology for the expansion of the high voltage grid

As part of the planned grid expansion with total investments of approx. 50 billion euros (including offshore grid connections), there is a need in Germany for 3,050 km of grid reinforcement on existing lines and around 2,900 km of new high-voltage direct current transmission lines, which are primarily to be installed as underground cables. With the environmentally friendly installation of efficient power lines, local residents and property owners can be relieved, social acceptance can be increased and approval procedures can be accelerated.

The required personnel and associated costs are also significantly lower compared to open-cut installation. Thus with the same number of personnel, several sections of line can be worked on simultaneously. These time and cost savings significantly increase efficiency. With this method, the German construction industry can tap into new business areas and global growth potential.

Nomination for the bauma Innovation Award 2019

The method has been nominated for the bauma Innovation Award 2019 in the 'Machine” category. This is awarded in mid-April in five categories. A panel of experts evaluates the practical relevance, economic potential and contribution to environmental protection of the innovations. The award is jointly conferred and awarded in five categories by the VDMA (German Mechanical Engineering Industry Association), bauma and the umbrella organizations of the German construction industry, HDB (German Construction Industry Federation), ZDB (German Construction Federation) and BBS (German Building Materials Association). 

Machine Data E-Power Pipe

• Machine type: AVNS350XB
• Excavation diameter: 505 mm
• Max. torque: 10 kN
• Protection pipe diameter: approx. DN250 to DN400
• Installation distance: > 1,000 m
• Installation depth: 1.5 m to 4 m
• Distance between pipes: 1 m to 2 m

Source: Herrenknecht AG

                     

30.01.2019 (3216 Clicks)

Vale shares preliminary Results of internal Investigation with federal and state Authorities

On Monday, the first working day after the Feijão Mine's dam breach in Brumadinho, Vale's Legal team began the first phase of the internal investigation to determine the causes of the accident. Preliminary results were shared with federal and state authorities.

25.01.2019 (3685 Clicks)

Vale reports a Breach to the Feijão Mine's Dam in Brumadinho (MG)

Vale is reporting that, at the beginning of this afternoon, there was a breach of Dam 1 of the Feijão Mine in Brumadinho (MG). The company deeply regrets the accident and is making every effort to provide relief and support to those affected.

25.01.2019 (4935 Clicks)

DMT: There’s no e-mobility without lithium

Engineering Performance | DMT Battery Minerals

Electric mobility and the raw materials market: in this article Dirk Harbecke, Chairman of the Board, Rock Tech Lithium, explains how these are interconnected and reports on the collaboration with DMT on the Georgia Lake project in Canada.

23.01.2019 (4268 Clicks)

Cimic's UGL secures $200m in Maintenance Services Contracts

Cimic Group company UGL has secured contract extensions to supply maintenance and turnaround services for its clients in the oil and gas sector.

23.01.2019 (4126 Clicks)

Porr to modernise Railway Lines in industrial zone of Upper Silesia in Poland

Porr has been awarded the tender by PKP PLK S.A. to modernise a section of the 'Metropolitan Railway Beltway' of the Upper Silesian industrial zone (Polish: Górnośląski Okręg Przemysłowy). The construction project is worth EUR 60m (PLN 256.6m) and is already the sixth railway construction project to be realised by Porr in South Poland. The total value of all six contracts concluded with the Polish railway infrastructure companies amounts to around EUR 350m overall. The project is set for completion within 40 months and will be realised as a Design & Build contract.