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30.07.2019 (2470 Clicks)

ETH Zurich: A Catalyst for Methanol paves the Way for the sustainable Production of Fuels and Chemicals

Scientists at ETH Zurich and oil and gas company Total have developed a new catalyst that converts CO2 and hydrogen into methanol. Offering realistic market potential, the technology paves the way for the sustainable production of fuels and chemicals.

29.07.2019 (2385 Clicks)

Tradecc showcases chemical Grouting Solutions at STUVA Expo 2019

Each tunneling project is unique and has its own challenges related to the conditions of the soil, the surface or the underground structures present. On November 26th and 27th 2019, Tradecc will present its construction chemicals, engineered to face those challenges, at STUVA Expo, one of the most specialized exhibitions for the tunnelling sector. At booth C123, visitors can also discover the latest innovative additions to Tradecc’s range of tunnelling solutions.

28.07.2019 (2554 Clicks)

Herrenknecht: Aircraft Take-offs above, Tunnel Construction below

Dubai International Airport is the hub of air traffic in the Persian Gulf: nearly 90 million international passengers are handled here each year. The operators are constantly investing in capacity expansion. As part of Dubai International Airport Expansion Phase 3, during ongoing flight operations a Herrenknecht micromachine (AVND2400AB) safely and precisely excavated three 610, 765 and 825 m long sections for a new stormwater drainage tunnel under the taxiway.

The absolutely safe and precise crossing under airport taxiways and runways is one of the supreme disciplines of mechanized tunnelling – especially when flight operations cannot be interrupted. Heave, settlement or other impairment of this highly sensitive infrastructure must be avoided at all costs. Herrenknecht tunnel boring machines in the hands of skillful tunnel builders are ideally equipped for this challenging task. The tunnelling crew from International Foundation Group, working for Dubai Aviation Engineering Projects under the project management of M.A. Kharafi & Sons, relied on Herrenknecht tunnelling technology to extend the stormwater drainage system at Dubai Airport. In March 2019, they celebrated the successful completion of the project.

Using the pipe jacking method, an AVN machine (AVND2400AB, Ø 3,025 mm) mastered the challenge of three drives of 610, 765 and 825 m respectively under the taxiway. The result is a new drainage tunnel with a total length of 2,200 m, which increases the airport's drainage capacity. At depths of 13 to 15 m, the micromachine crossed under the Terminal 2 taxiways while flight operations on the ground and in the air continued smoothly and safely. On the longest drive an average of 15 m of tunnel per day were excavated through soft soils with sandstone and siltstone. The drive remained exactly on course by precise process and control technology from VMT.

The new pipelines will efficiently collect and drain away rainwater, especially during heavy downpours, so it can no longer accumulate on the surface. This is crucial to maintaining smooth flight operations. With close to 90 million passengers per year, Dubai International Airport is one of the busiest airports in the world.

In the past, Herrenknecht technology has successfully completed a number of challenging tunnel missions, such as crossing under airports. For the extension of the baggage handling system at Zurich's Kloten Airport, a Herrenknecht Mixshield (Ø 6,280 mm) superbly excavated a 2,400 m long tunnel under the airport grounds until 2001. In 2002, an EPB Shield (Ø 6,460 mm) tunnelled under the Minneapolis-St. Paul Airport in the United States for the newly developed 18.6 km long light rail system. In Brazil, an AVN1500 constructed a 367 m long stormwater drainage tunnel under the runway at Goiânia Airport in 2015. In 2017, two EPB Shields (Ø 6,250 mm) completed two new tunnel tubes for passenger and baggage transport with a total length of 3,842 m under the runways at Moscow Airport Sheremetyevo in Russia. During the excavation of a 4,500 m long metro tunnel in Barcelona, in 2018 a taxiway at El Prat Airport was crossed under over a distance of 70 m with great success.

Machine and Project DATA M-1804M - Dubai Airport

• Machine type: AVND2400AB
• Shield diameter: 3,025 mm
• Drive power: 315 kW
• Torque: 1,200 kNm
• Drive length: 1x 610 m, 1x 765 m, 1x 825 m
• Geology: soft soils (sandstone, siltstone)
• Client: Dubai Aviation Engineering Projects Corporation
• Main contractor: M.A. Kharafi & Sons
• Tunnelling subcontractor: International Foundation Group L.L.C.

Source: Herrenknecht AG

                     

27.07.2019 (2420 Clicks)

Sandvik completes the Acquisition of Newtrax

Sandvik has completed the previously announced acquisition of Newtrax, a supplier of technology in wireless connectivity to monitor and provide insights on underground mining operations, including people, machines and the environment.

26.07.2019 (2229 Clicks)

Superior and CMS Cepcor create Partnership for Crusher Parts in North America

Superior Industries Inc., a U.S. based manufacturer and global supplier of bulk material processing and handling systems, says it has entered into a strategic partnership with Europe’s largest manufacturer of aftermarket crusher parts. For 40-plus years, CMS Cepcor has manufactured premium crusher spares for more than three dozen active and classic brands throughout Europe. The parts manufacturer recently expanded its global footprint when it launched CMS Cepcor Americas.

25.07.2019 (2593 Clicks)

Vale on the partial Return of dry Processing Operations at the Vargem Grande Complex

Vale informs that the National Mining Agency (Agência Nacional de Mineração - ANM) authorized the partial resumption of the dry processing operations at the Vargem Grande Complex. All operations of the Complex were suspended by ANM on February 20th, 2019, to prevent occasional triggers that could affect dam stability as a result of ongoing activities at the Complex.

25.07.2019 (2259 Clicks)

Anglo American approves Aquila hard coking Coal Project in Australia

Anglo American plc announces the approval by its Board of the Aquila project to extend the life of the Capcoal underground (Grasstree mine) hard coking coal operations in Queensland, Australia by six years, to 2028. With an expected attributable capital cost of US$226 million, development work is expected to begin in September 2019, with first longwall production of premium quality hard coking coal in early 2022.

24.07.2019 (2597 Clicks)

Anglo American senior leadership changes

Anglo American plc announces the appointment of Nolitha Fakude as Chairman of Anglo American’s Management Board in South Africa, with effect from 1 September 2019.

24.07.2019 (2504 Clicks)

Anglo American: Board Changes

Anglo American plc announces that Hixonia Nyasulu will join the Board as a non-executive director, with effect from 1 November 2019, and that Nonkululeko Nyembezi will join the Board as a non-executive director, with effect from 1 January 2020.

23.07.2019 (3594 Clicks)

Schachtbau Nordhausen and Bauer together at the MiningForum

The MiningForum, which takes place every two years, brings together decision makers, experts and specialists from the industry together for in-depth dialog. In their lectures, renowned speakers address relevant issues in the national and international commodity market. Alongside this, the specialist exhibition offers companies a platform to present their products and services. The conference was first hosted by DMT in 1991, 'in Kelbra which was close by and supported by Schachtbau Nordhausen GmbH,' reminisces Managing Director of Schachtbau, Michael Seifert (second from the left). The 15th meeting of the MiningForum took place on June 27 and 28 in Berlin.