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DSI Underground GmbH
23. Kolloquium Bohr- und Sprengtechnik 2023

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

28.03.2022 (251 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 (800 Clicks)

Microtunnel Boring Machine breaks new Ground with mineral oil-free hydraulic Fluids from German Specialists


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 (Credits: Volker Wiciok, Bochum)

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°.

One particular section along the route of the new gas pipeline being laid in NRW had to negotiate a height difference of 31.4 m. The extreme incline meant that pipe brakes had to be used for the tunnelling phase in order to prevent pipeline settlement both during the excavation work and over the subsequent lifetime of the service pipe. The entire pipe structure weighs around 188 t, which gives some idea of the kind of loads involved. During the construction phase the individual casing pipes lowered into place behind the cutter head of the machine were continuously inched forward under thrust from the pipejacking cylinders. The pipes are 1,760 mm in diameter.

The project ended with the cutter head breaking through at the surface reception point. It was then secured in place by a heavy-duty crane before being lifted from the end pit and prepared for transport off-site.

Project manager Michele Rossi of SaarGrundbau was delighted that the project had been successfully delivered incident-free. 'We are confident of our expertise in microtunnelling. When working at construction sites in nature-sensitive areas it is important that we can also count on the performance of the service fluids that we use in our machines. So we value the hydraulic fluids supplied by Fluid Competence (in this case Lubesave) for their biodegradable properties and for the enhanced health and safety standards that they offer both in use and when being handled by our site personnel.'

'This was an ambitious and successful operation with our fluids running in a Herrenknecht microtunnelling machine. It will open the way for further assignments in much larger machines with greater boring diameters', explains Dieter Mantwill, who is managing director of Fluid Competence, speaking at the conclusion of the project.

About Fluid-Competence

The Kamen-based company develops high-performance, mineral oil-free hydraulic fluids that offer a viable alternative to oil based and bio-oil products. They are up to 99% degraded in just 28 days and so can be rated as environment-friendly. These highly flame-retardant products also provide significant health protection benefits and their high water content and long service life make a real contribution to CO2 pollution levels every time out.

About SaarGrundbau

The company is engaged in microtunnelling and  specialist civil engineering work.

Source: Fluid-Competence, Kamen, Germany

 

#oil-free fluids #fire protection #Germany (DE) #environmental and social impact #SaarGrundbau GmbH & Co. KG #Herrenknecht AG #Fluid Competence GmbH #Tunnelling #Supply tunnels #Hydraulics #HSE #hydraulic fluids (environmentally friendly) #hydraulic oil #roadheading machines #tunnel boring machines (TBM) #micro tunnelling machines

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25.03.2022 (306 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 (358 Clicks)

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

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.  

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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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J. D. Theile GmbH & Co. KG
Latest Articles

23.12.2022 

GeoResources Journal 4-2022GeoResources Journal 4-2022
Special Topic: Focus on Responsibility

We are pleased to present to you the current edition of the English Journal GeoResources....  

#Hermann Paus Maschinenfabrik GmbH #SMT Scharf GmbH #SIEMAG TECBERG GmbH #Mining #Tunnelling #Geotechnics

23.12.2022 

The Emscher Restoration Project: a real Success Story for Germany’s most populous StateThe Emscher Restoration Project: a real Success Story for Germany’s most populous State

For nearly a hundred years the Emscher served as an open wastewater channel that helped to kick-start the development of the Ruhr basin as a centre of industry in North Rhine-Westphalia. The river h...  

#Tunnelling #Supply tunnels #special civil engineering #hydraulic engineering

23.12.2022 

Mine Water as a Resource for Critical Raw Materials in GermanyMine Water as a Resource for Critical Raw Materials in Germany

The new IAW33 research project being carried out by the Research Centre of Post-Mining at TH Georg Agricola University of Applied Sciences (THGA) is looking at the possibilities for extra...  

#RAG Aktiengesellschaft #Mining #abandoned mining #environment protection

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

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17. October 2022 (606 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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Liederbuch für Berg- und Hüttenleute - das Original - modern überarbeitet!

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11. May 2017 (1199 Clicks)

Das Liederbuch für Berg- und Hüttenleute des Berg- und Hüttenmännischen Vereins ist wieder lieferbar. Die neue, 15. Auflage ist inhaltlich umfassend und modern überarbeitet. Im Auftritt bleibt es klassisch und ist hochwertig sowie langlebig verarbeitet. Dies ist die einzige authentische Neuauflage des originalen Liederbuchs für Berg- und Hüttenleute des Berg- und Hüttenmännischen Vereins. Für zu Hause, den Knappenchor und die Kneipe.  

#Tunnelling #Mining

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