25.11.2022 (141 Clicks)
In October 2022, China Overseas Engineering Group Co. Ltd and China Railway No. 2 Engineering Group Co Ltd launched a 6.4 m diameter Robbins Double Shield TBM. The TBM is boring the 13.1 km headrace tunnel for the Sunkoshi Marin Diversion Multipurpose Project (SMDMP) located in southern Nepal.
25.11.2022 (151 Clicks)
The 8th edition of the ITA Tunnelling and Underground Space Awards returns this December in digital. Since 2015, the international competition seeks and rewards remarkable achievements in tunnelling and the underground industry. Organized by the International Tunnelling and Underground Space Association, the event both showcases the most ambitious underground projects all over the world as well as the latest innovations, techniques, and methods in tunnelling. One of the categories of the competition is focused on rewarding the Technical Innovation of The Year.
24.11.2022 (173 Clicks)
Anglo American has signed a memorandum of understanding with Aurubis AG (“Aurubis”) – a global provider of non-ferrous metals and one of the world’s largest copper recyclers – to develop a copper product offering that responds to increasing expectations for future-enabling metals that are sustainably sourced and supplied.
24.11.2022 (145 Clicks)
The 8th edition of the ITA Tunnelling and Underground Space Awards returns this December in digital. Since 2015, the international competition seeks and rewards remarkable achievements in tunnelling and the underground industry. Organized by the International Tunnelling and Underground Space Association, the event both showcases the most ambitious underground projects all over the world as well as the latest innovations, techniques, and methods in tunnelling.
24.11.2022 (157 Clicks)
Below ground: Diaphragm wall works for metro expansion in Indian metropolis
Below ground: Diaphragm wall works for metro expansion in Indian metropolis (Credits: Bauer Group)
A pulsating metropolis with millions of inhabitants, a port city and capital of the Indian state of Tamil Nadu – that's Chennai. As with many large cities in India, the city has experienced rapid population growth in recent years. The need for infrastructure is correspondingly high as a result. One solution to deal with the high traffic volume in the heavily built-up city is to move it underground. The Chennai Metro was opened in 2015 and so far has two lines with a total length of approx. 46 km. Now the network is to be expanded. Phase 2 of the extension includes the Chetpet Metro Station, a major project, what started in April of this year. As part of this project, Bauer Engineering India Pvt. Ltd., a subsidiary of Bauer Spezialtiefbau GmbH, was tasked with execution of the required diaphragm wall work.
In total, Bauer constructs more than 15,100 m2 of diaphragm wall up to a depth of 35m. When constructing a panel, the work is divided into three steps: excavation of the trench using bentonite as the stabilizing slurry, installation of the steel reinforcement cages, and concreting work. "The steel reinforcement cages are each around 33 m long and weigh 35 t," explains Hassan Farhat, Project Manager at Bauer India. In total, 286 m³ of concrete is filled in for each diaphragm wall panel in just six hours, with 30 secondary panels produced by the beginning of November..
What's special about this project: There is zero tolerance for the trench excavation. However, this isn't the only challenge, as the site is in an area with significant rainfall in the monsoon season, i.e. during the construction phase. The ground composition of sand, silt, stiff clay and rock is also very demanding. "Another challenge is logistics. Since the new metro station is located directly in the urban area, the works need to be implemented in a very confined space. This requires extreme caution and excellent organization," continues Hassan Farhat.
A Bauer MC 96 duty-cycle crane with DHG-C hydraulic grab as well as an MC 128 duty-cycle crane with BC 40 cutter are being used for the works. In addition to this, digital tools such as the Bauer data management software b-project and the Virtual Site Installer are also being used.
"We are currently running on time and are more than satisfied," is Hassan Farhat’s summary of the project so far. "If everything continues to go as planned, we expect to successfully complete the project before the end of the year and thus a few weeks before the originally scheduled completion date at the end of January."
Source: Bauer Group
#diaphragm walls #Metro #public transport #infrastructure #urban transformation #India (IN) #Bauer Spezialtiefbau GmbH #Tunnelling #Geotechnics #Machinery for Mining and Construction #Digitalisation #excavators #project, process, data management
On the autogenous Healing of Cracks in waterproof Concrete Structures – Experiences in the Field and Conclusions drawn
Structural planning engineers usually refer to EN 1992-3 when designing watertight concrete (WU concrete) structures such as basements, tunnels and water tanks. This standard can be interpreted...
#A.S.T. Bochum GmbH #Geotechnics #Tunnelling #sealing sheets, geomembranes #sealing #sealing technique
Practical Examples of Concrete Logistics in Shaft Sinking – a real Challenge for Transport and Handling Operations
Like steel, concrete is a vital material for shaft construction work and is needed in practically every undertaking of this kind. This paper examines the special aspects associated with the use of c...
#REDPATH DEILMANN GmbH #RAG Aktiengesellschaft #K+S AG #Slavkaliy GmbH #Mining #underground mining
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
07.02.2023 - 09.02.2023
20.02.2023 - 23.02.2023
26.02.2023 - 01.03.2023
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>> read more >>
27. September 2018 (2862 Clicks)
Das Buch 3 der Reihe „Dokumentation der technischen Entwicklung bei der RAG“ stellt die Evolution der Vorleistung in den vergangenen 50 Jahren dar. Da sie den Zugang zur Lagerstätte schafft, ist sie die Grundvoraussetzung zur Gewinnung des Rohstoffs Kohle und bildet die Grundlage für den langfristig sicheren und leistungsfähigen Betrieb eines Bergwerks.
#RAG Aktiengesellschaft #Mining #underground mining #abandoned mining>> read more >>
12.01.2023 (328 Clicks)
LKAB has identified significant deposits of rare earth elements in the Kiruna...
#LKAB #Mining #Energy #underground mining>> read more >>
24.01.2023 (219 Clicks)
The Supervisory Board of K+S Aktiengesellschaft has appointed Dr. Carin-Marti...
#K+S AG #Mining #underground mining>> read more >>
07.01.2023 (208 Clicks)
Masan High-Tech Materials integrates global R&D activities under leadership of H.C. Starck Tungsten Powders
H.C. Starck Tungsten Powders is bringing together the research and developmen...
#H.C. Starck Tungsten GmbH #Mining>> read more >>
07.01.2023 (184 Clicks)
- Joint Venture of Implenia and Stangeland Maskin selected to plan and ...
#Implenia Construction GmbH #Tunnelling #Traffic tunnels>> read more >>