Tunnel Business Magazine

JUN 2018

TBM: Tunnel Business Magazine is the market leader for North America. TBM is written for leading professionals in all aspects of tunneling and covers project stories, design elements, contracting strategies, legal issues, new technology and more.

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TUNNELINGONLINE.COM B U S I N E S S B R I E F S 1 2 TBM: TUNNEL BUSINESS MAGAZINE // JUNE 2018 GraphicSchedule is a software startup providing an Excel application that makes it easy to create linear schedules and one- page bar charts that communicate the big picture for large and complex projects. After years of tediously creating one-page schedules by hand for major underground construction projects, co- founders James Wonneberg and Ron Drake launched GraphicSchedule to de- velop an app that the entire industry can use and benefit from. "We believe that people who work on these projects want to know what's in that 70-page schedule with 3,000-plus activities," says Wonne- berg, "but our industry lacks the tools to communicate that information in a way that the entire team can understand." GraphicSchedule runs in Excel and plots shapes with respect to time and lo- cation, to graphically depict how a project will be constructed. These graphics can be linked to the master schedule for rapid updates whenever things change. The app is used by contractors, engineering firms, and project owners seeking a better way to communicate their projects. "We are seeing more and more heavy civil contractors using GraphicSchedule to develop and optimize their bid sched- ules," explains Drake, "meanwhile, project owner teams are using it to show their executives and other stakeholders how active projects are progressing." Wonneberg and Drake also continue their work in underground construction management, supporting WSDOT's Alas- kan Way Viaduct Replacement Program, o's Regional Connector proj- ect, respectively. And they frequently give presentations to help educate the industry about how this method can help major projects. "It's exciting to be able to provide a tool that helps the industry we serve," says Wonneberg. "This is our way of leav- ing the wood pile a little higher than we found it," adds Drake. To download their eBook, or request a free trial of the app, visit www.Graphic- Schedule.com. GraphicSchedule Software Available for Large, Complex Projects With the expansion of the railway line between Rokycany and Pilsen as a high-speed rail link, the Czech railway network is being modernized. The line in the western part of the Czech Republic is part of the railway corridor linking Pilsen to Prague and thus to the European railway network. Over a distance of 4,150 m it consists of two single-track tunnel tubes. The tubes were built by the Czech contractor ostav. For the first time in Eastern Europe, a convertible multi-mo om EPB mode to single-shield mode) was used for the proje was specifically designed and manufactured by Herrenknecht at its Schwanau, Germany, plant. The multi-mo of the two tunnels through quartzite shale stone and clay soils in closed EPB mode with screw conveyor muck removal. On the last 1.1 km of each route the machine, model S-799, had to penetrate hard spilite rock, for which it was converted to open single-shield mode with belt conveyor removal. Each of the conversions was realized inside the tunnel in only two weeks. "For variable ground conditions along the tunnel alignment, a convertible multi-mo est and most flexible solu- tion. It can be run in different tunneling modes and thus operate in changing geologies," explains Korbinian Kröger, responsible project manager at Herrenknecht. The cutting tools were also changed for the second section of each drive. 19-in. disc cutters were thus installed for the single- shield mode section instead of the previously used 18-in. disc cut- ters. The larger disc diameter allowed higher contact pressure in the solid hard rock and longer running times. With small over- burdens in parts, the flexible all-arounder among the tunnel bor- ing machines achieved weekly top advance rates of up to 182 m. After 12 months, in October 2017 the site crew was able to cel- ebrate the final breakthrough for the second tunnel tube. In ad- enknecht provided additional equipment, such as multi-service vehicles from su ooling tower and belt conveyor systems. The new high-speed rail link reduces the average travel time between Rokycany and Pilsen by around 10 minutes, and the capital city of Prague can be reached from Pilsen in less than one hour. As a result the region around Pilsen – with about 170,000 inhabitants the fourth largest city in the Czech Republic – will be better connected to the trans-European transport network. The modernization project not only makes the railway line faster, but also brings it up to the state of the art. This includes, for example, special safety features such as fire protection solutions and escape routes in the new tunnels. Herrenknecht is also involved in other infrastructure develop- ment projects in Eastern Europe. They include Poland's largest tunnel structure – the 10-km long "Slowacki Route" in Gdansk. The road tunnel crosses under the Vistula River and connects the airport to the motorway and the deep sea port. Tunnel boring ma- chines from Herrenknecht have also been used in the expansion of the metro in numerous Eastern Europ - cow, Sofia and Warsaw. Herrenknecht TBM Helps Modernize Czech Infrastructure

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