KHK – Cromm & Seiter GmbH has been an efficient partner for industry, construction, municipalities and energy supply in the civil engineering sector for 30 years. The portfolio includes, among other...
This article presents a three-staged exploration algorithm for mechanized tunnelling, which combines two different techniques. Firstly, a supervised machine learning methodology utilizes common...
To realize the integrated synchronized timetables in long-distance traffic and to increase the capacity in freight traffic between Brig and Bern, the two-lane extension of the Lötschberg Base Tunnel (LBT) is necessary. This demands the installation of an inner lining over 14 km in the second LBT tube. Considering the excavation profile available, a skillful choice in the sequence of formwork carriage geometries (FCGs) can lead to optimization of the concrete volume to be installed, the feasibility of the build and the construction sequences. In the sense of a “proof of concept”, mathematical optimization algorithms are used to find a cost-optimal sequence of FCGs for a defined tunnel section. The article in tunnel 5/2021 describes the chosen approach and the results of the cost optimization.
Robbins’ latest innovation is making good headway on a non-circular tunnel excavation in hard rock. The rectangular TBM, known as the MDM5000 (standing for Mine Development Machine with dimensions of...
Sandvik Mining and Rock Solutions ist ein Geschäftsbereich innerhalb der Sandvik-Gruppe und ein weltweit führender Anbieter von Maschinen und Werkzeugen, Ersatzteilen, Dienstleistungen und technischen...
HAHN Kunststoffe GmbH, an internationally operating company, produces stacking blocks made of recycled plastics for the storage of tubbing segments and other concrete parts. The material hanit® is...
Excavator-mounted cutting attachments have become established in tunnel projects of the Austrian construction group Porr and in other construction companies. The wide range of applications is carried out with both standard and special cutters. In some cases, even excavation of the tunnel is carried out using cutting technology. In soft rock, this offers an advantage over blasting, because the bedrock is not damaged by vibrations. Moreover, numerous other operations in tunnel construction and rehabilitation are made possible by excavator-mounted cutting attachments.
The STUVA conference with accompanying trade exhibition STUVA-Expo is to be held as a face-to-face event in the usual manner from 24 to 26 November 2021 at Messe Karlsruhe. The event is considered the...
With over 600 employees at 20 locations and 40 years of experience, Vössing Ingenieurgesellschaft mbH develops innovative solutions for infrastructure projects of all sizes. The services in the tunnel...
The patented EK series chain cutters with their rotating chain between the two lateral cutter drums are a core product of Kemroc. But the German specialist manufacturer has massively expanded its...
