Hölscher Wasserbau GmbH is an internationally active family business from Germany. From eight locations in Germany, 450 employees offer services in the fields of dewatering, environmental...
Registration for the stands of the technical exhibition at the World Tunnel Congress 2015 in Dubrovnik is still open until April 30, but about 150 exhibitors have already confirmed their...
In the United Arab Emirates, the most modern sewerage system in the Middle East, with new sewers and a new central water treatment plant, is planned to go into operation in 2015. Between 2008 and...
Construction work on Line U12 of the Stuttgart Stadtbahn between the main station and the city library will continue until the middle of 2016 (the Stadtbahn network is run by the Stuttgarter...
The International Fire Academy at Balsthal, Switzerland, as a renowned European fire brigade school and academy, has published its teaching material in the form of a German-language manual captioned...
Today’s Tunnel Boring Machines (TBM) are often required to bore longer tunnels in harder rock at a faster pace – a trio of challenges that can be daunting for any contractor. With the proper design, operation, and maintenance, however, modern TBMs are very capable of reaching their 10 000-hour design life or more. TBMs in the industry today have already accomplished the feats of boring upwards of 50 km on multiple tunnels over decades, and of completing single TBM drives totaling 27 km. With new capabilities, even greater feats may be possible.
The objective of the AKE Abwasserkanal Emscher infrastructure project is to transfer sewage by underground means in the future in appropriately dimensioned conduits through the German Ruhr District to the clarification plants, and to revitalize the river Emscher. The pipeline networks in the neighbouring towns and cities have to be adapted to link up with the roughly 50 km long main interceptor. In Gelsenkirchen, tunnels belonging to the urban transit system are also affected by the sewage construction. The tunnels were planned and built during the 1970s, taking expected influences resulting from mining into consideration. These influences led to special designs for the tunnels, which represent particular general conditions for their strengthening.
