Tunnel Business Magazine

AUG 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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Page 5 of 43

TUNNELINGONLINE.COM TBM: TUNNEL BUSINESS MAGAZINE // AUGUST 2018 B U S I N E S S B R I E F S 6 Herrenknecht TBM Breaks Through on Bossler Tunnel The site crew working with tunnel boring machine "Käthchen" has com- pleted the second tube of the Bossler tunnel. The breakthr - lhausen im Tale in the state of Baden- Württemberg in Germany is another milestone in the construction of the Stuttgart-Wendlingen-Ulm railway line, which is expected to go into opera- tion in 2022. When Katie (Ø 11,340 mm) broke through the target wall, the Earth Pres- sure Balance Shield (EPB) had completed around 18,000 m of tunneling in the sandstone, limestone and claystone rock. The Herrenkne d the second tube of the Bossler Tunnel in early June. onstruction of the tubes in this section is completed. The railway tunnel is of great importance for the new Wendlingen-Ulm line and is expected to go into operation in 2022. Travel time on the Stuttgart-Ulm route will be almost halved. Ten million pas- sengers a year will benefit from the rail- way project. The second tube of the Bossler tunnel runs parallel to the first, which the team from ARGE ATA Tunnel Albaufstieg (Porr Deutschland GmbH, G. Hintereg- ger & Söhne Baugesellschaft m.b.H., Östu-Stettin Hoch-und Tiefbau GmbH, Swietelsky Baugesellschaft mbH) had already complete ember 2016. The was then disassembled into its individual parts, transported back to the starting point and prepared for the launch of the second drive. From April 2017, the machine again worked its way continuously through the rock. Construction of the two tubes was carried out differently than originally planned. After the preliminary geologi- cal analysis, the construction team had only intended to us er a distance of about 2.8 km. In the course of further exploration, however, the soil conditions turned out to be more favorable than expecte om Herrenknecht was thus able to exca- vate nearly 7.8 km in the first tube and even 8.8 km in the second tube – which is almost the entire tunnel distance. The work progressed extremely quickly. From the b achieved top performances. In June 2015, two months after the start of the drive in the first tub eached the 1,000-m mark. It was able to cover up to 38 m per day and after advancing for six months had already excavated 3 km – a strong performance on the part of the site crew. A total of 60,000 segments were installed in the Bossler Tunnel. They were manufactured in the pur- pose-built factory close to the Aichel- berg tunnel portal. The Albvorland Tunnel is also part of the new construction of the Wendlingen-Ulm railway line. The Herrenknecht tunnel boring machines "Wanda" and "Sibylle" (Ø 10,820 mm) are in operation there. So far they have ex- cavated almost 4 km of tunnel. As part of the Stuttgart 21 project, Herrenknecht tunneling technology is also working on the Filder T ulti-mo "Suse" (Ø 10,820 mm) has already ex- cavated over 10 km of the tunnel route planned to connect the main station with the airport. Jennmar announced July 9 that it has reached a five-year agree- ment with Dräger Inc. granting Jen- nmar exclusive distribution rights for Dräger's gas monitoring devices for the U.S. mining and tunneling markets. Jennmar will also carry additional Dräger product lines to further support the Jennmar mining and tunneling customer base in the United States. Jennmar is a global, family- owned company that is a leader in ground control technology for the mining and tunneling industries. For more than 40 years, Jennmar's focus has been on manufacturing products and creating ground con- trol solutions that help keep work- ers safe and productive. Founded in Lubeck, Germany, in 1889, Dräger is an international lead- er in the fields of medical and safety technology. For more than a century, the company has dedicated itself to improving mine safety by provid- ing the industry with quality mine safety equipment and products. By working with customers, Dräger continues to develop and advance its technologies to produce innovative solutions to meet the underground industry's changing needs. the Jennmar/Dräger alli- ance and driving customer service and product enhancements will be Brad Rekuc, Dräger's sales director, and Jim Pinkley, Jennmar vice president. Tony Calandra, executive vice president of Jennmar companies, said, "These products will enhance Jennmar's sales and add to our pres- ence in providing safety equipment to the mining and tunneling indus- tries. Dräger is a first-class organiza- tion with quality products." "We are pleased to partner with a company like Jennmar that so closely aligns with our organization's vision to make the mining industry more efficient and, more impor- tantly, making the mining industry safer," Rekuc said. Jennmar, Dräger Sign Mining Equipment Distribution Agreement

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