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Bauen im und am Wasser -  9. Deutscher Geotechnik Konvent

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GeoResources - Mining, Tunnelling, Geotechnics, Energy - News, Events and Journal

28.03.2022 (252 Clicks)

Orica Board Appointment - Gordon Naylor

Orica Chairman Malcolm Broomhead today announced the appointment of Mr Gordon Naylor as independent, non-executive Director, effective 1 April 2022.  

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25.03.2022 (801 Clicks)

Microtunnel Boring Machine breaks new Ground with mineral oil-free hydraulic Fluids from German Specialists (Credits: Volker Wiciok, Bochum)Microtunnel Boring Machine breaks new Ground with mineral oil-free hydraulic Fluids from German Specialists

The Saarbrücken civil engineering contractor SaarGrundbau has successfully completed a tunnelling project using a Herrenknecht AVN 1200 C micro boring machine (TBM) running on biodegradable hydraulic fluid from the German-based company Fluid-Competence. This particularly challenging engineering project involved driving a 96 m-long tunnel with simultaneous casing at a gradient angle of 34.60°.  

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25.03.2022 (307 Clicks)

The Ashbridges Bay Outfall won accolades from the Tunnelling Association of Canada (TAC) in late 2021 for its all-remote machine acceptance, the first of its kind, enacted due to the Covid-19 pandemic. (Photo: Robbins)Robbins Single Shield completes Canada’s Largest Outfall

TBM bored at record rates below Lake Ontario  

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24.03.2022 (359 Clicks)

HS2 reveals noise-cancelling Chiltern Tunnel North Portal Design


HS2 reveals noise-cancelling Chiltern Tunnel north portal design: Chiltern Tunnel North Portal (Source: HS2)

HS2 reveals noise-cancelling Chiltern Tunnel north portal design: Chiltern Tunnel North Portal (Source: HS2)

Two perforated concrete hoods will cover the track, extending the 10 mile long tunnel into the open air. These ‘porous portals’ will avoid sudden changes in air pressure – and resulting noise – caused by trains entering and exiting the tunnels.

Set low into the landscape between Great Missenden and South Heath in Buckinghamshire, the portals will only be visible from a footbridge over the railway to the north.

To allow for the different levels of air pressure, the portal for trains entering the tunnel will be 220m long, while the one for those exiting will be just 135m. Both will have smooth concrete on top and textured concrete to a low level, to reduce staining and maintenance.

Alongside the portals, there will also be a simple single-storey ancillary building to house mechanical and electrical equipment. HS2 are currently seeking views from the community about the final design, with options including a green roof, split louvred or anodised aluminium façade.

HS2 Ltd’s Project Client, David Emms said: “Once construction is complete, the Chiltern tunnel will take HS2 trains deep under the Chiltern hills, linking London with Birmingham and the North and releasing space for more freight and local services on the existing mainline. Set low into the landscape and out of sight for most passers-by, the structures will play a crucial role in cutting out unnecessary noise and housing essential mechanical and electrical equipment. We are keen to hear local views and I would encourage people living locally to have a look at the designs and let us know what they think.”

The structures have been designed and will be built by HS2 Ltd’s main works contractor Align JV – a team made up of Bouygues Travaux Publics, Sir Robert McAlpine, and VolkerFitzpatrick. Work is well underway, with two enormous 2,000 tonnes tunnel boring machines heading north from the south portal to excavate the twin-bore tunnels. They reached Chalfont St Peter last week and are expected to breakthrough at the north portal in two years’ time.

Alan Price, Align JV Design Director said: “Our TBMs, Florence and Cecilia are making good progress and have each completed over 3km on their journey to the north portal. We are always very conscious of the sensitive setting for any permanent structures on the project and this includes the north portal design. We welcome comments from local stakeholders in order that we can finalise the design.”

To the north of the tunnel, the new high speed line will be set into a cutting for 1.8 miles (3km) on its approach to the Wendover Dean Viaduct, with more than 20 hectares of new woodland, shrubs and wildflowers planted to help blend the railway into the surrounding countryside. The species chosen will be typical to the Chilterns including Beech, Oak, Yew, Holly and Dog Rose.

Across this stretch of the line, six new bridges will cross the railway cutting, linking country lanes and historic footpaths to the east and west. New planting will also link existing ancient woodlands alongside of the line, boosting biodiversity and connecting and enhancing existing wildlife habitats.

The surface route to the north of the tunnels, is being built by another of HS2’s main works contracts, EKFB - a team made up of Eiffage, Kier, Ferrovial Construction and Bam Nuttall.

Source: HS2

 

#portal #noise protection #BAM Nuttall Limited #Ferrovial S.A. #Kier Group plc #Eiffage #Tunnelling #design #design and engineering

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24.03.2022 (288 Clicks)

Keliber has received the Mining Permit for the Rapasaari Mining Area in Finland

The Finnish Safety and Chemicals Agency (Tukes) has granted a mining permit for the Rapasaari mining area on 23 March 2022.  

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Latest Articles

23.12.2022 

Sustainability in Construction – Closing the Loop for GeosyntheticsSustainability in Construction – Closing the Loop for Geosynthetics

Geosynthetics have been used in various geotechnical applications for several decades now. Solutions with geosynthetics contribute to the conservation of granular materials and to a reduction.

...  

20.10.2022 

‘Focus on Technology’ or ‘Wonders of modern Technology’‘Focus on Technology’ or ‘Wonders of modern Technology’

The bauma trade fair will soon open its doors, about six months late – at a time of major changes and challenges. To coincide with the 33rd World’s Leading Trade Fair for Construction Machinery, Building Material Machines, Mining Machines, Construction Vehicles and Construction Equipment, the focus of this issue is on technology – an interesting special topic for all of us in the areas in which we work, not just for trade-fair visitors and exhibitors....  

#Energy #Geotechnics #Tunnelling #Mining

20.10.2022 

World’s longest Railway Tunnel Project – supported by innovative Conveyor Digitalisation and reliable EngineeringWorld’s longest Railway Tunnel Project – supported by innovative Conveyor Digitalisation and reliable Engineering

The consortium BTC Brennero Tunnel Construction and the Hosch Group jointly delivered on a world-class tunnelling project by combining excellent engineering with the innovative remote monitoring system Hoschiris Discover. System integration in May 2021 has effectively prevented any instances of serious belt damage. Moreover, service missions have become more efficient and can be scheduled on-demand....  

#Brennero Tunnel Construction (BTC) #HOSCH-Foerdertechnik Recklinghausen GmbH #Tunnelling #Traffic tunnels #Conveyor technology #Digitalisation

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UCT 2023 - 28th Annual Underground Construction Technology


20.02.2023 - 23.02.2023

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26.02.2023 - 01.03.2023

MINEXCHANGE 2023

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World’s longest Railway Tunnel Project – supported by innovative Conveyor Digitalisation and reliable Engineering

World’s longest Railway Tunnel Project – supported by innovative Conveyor Digitalisation and reliable Engineering

17. October 2022 (607 Clicks)

The consortium BTC Brennero Tunnel Construction and the Hosch Group jointly delivered on a world-class tunnelling project by combining excellent engineering with the innovative remote monitoring system Hoschiris Discover.  

#Brennero Tunnel Construction (BTC) #HOSCH-Foerdertechnik Recklinghausen GmbH #Tunnelling #Traffic tunnels #Conveyor technology #Digitalisation

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Books / Bücher
RAG-Technikchronik - Buch 2: Technikentwicklung im Abbau

RAG-Technikchronik - Buch 2: Technikentwicklung im Abbau

27. September 2018 (2865 Clicks)

Als erster Band erschienen in der Buchreihe Dokumentation der technischen Entwicklung bei der RAG ist das Buch 2, das sich mit der „Technikentwicklung im Abbau“ beschäftigt. Die Autoren betrachten die einzelnen Aspekte des Strebbaus an langer Front in flacher und mäßig geneigter Lagerung.  

#RAG Aktiengesellschaft #Mining #underground mining #abandoned mining

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Implenia wins large and complex tunnelling project in Norway – E03 Boknafjord tunnel

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