2011 Rapid Excavation and Tunneling Conference Proceedings by Steve Redmond, Victor Romero

By Steve Redmond, Victor Romero

Each years, specialists and practitioners from around the globe assemble on the prestigious speedy Excavation and Tunneling convention (RETC) to profit concerning the most modern advancements in tunneling expertise, and the signature tasks that aid society meet its turning out to be infrastructure wishes. within this authoritative 1608-page ebook, you will find the one hundred fifteen influential papers that have been provided offering necessary insights from tasks all over the world. you will achieve from the teachings learned--often the challenging way--from huge and critical initiatives in tricky floor conditions.

This e-book will take you underground for a realistic, up-close look at headline-making initiatives from around the world. almost each element of tunneling is tested. it really is an fundamental source for layout and building engineers and contractors within the large-scale civil tunnel who are looking to remain at the cutting edge in their occupation

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All parties cooperated in a coordinated design and construction effort to maintain momentum. The remainder of this paper discusses this effort in detail, including: 1. Proposed Contractor revised construction concepts 2. MTA CC coordination of DJ and GEC activity 3. GEC redesign of excavation support to accommodate the revised construction concept, involving joint activity of GEC geotechnical and structural engineers in a fast-track design process 4. Changes in structure geometry which evolved during the advancement of the project.

This effort applies to all areas served by DC Water, not just the District of Columbia, thus the BPT is funded from multiple sources. The BPT is the first major construction project to be executed in the implementation of the District’s LTCP, and it will ultimately serve as storage and also convey storm water to the Blue Plains Advanced Wastewater Treatment Plant (Blue Plains). The tunnel contract includes final 44 © 2011 by the Society for Mining, Metallurgy, and Exploration. All rights reserved.

Typical sections, lateral support 42 © 2011 by the Society for Mining, Metallurgy, and Exploration. All rights reserved. Electronic edition published 2011. East Side Access Manhattan 43 Figure 18. Partially excavated concrete plug Figure 19. Close up of partially excavated plug. Note “knife edge” left by TBM. Figure 20. Close up of “knife edge” Figure 21. Demolition of plug remnants Figure 22. “Knife edge” after plug removal © 2011 by the Society for Mining, Metallurgy, and Exploration. All rights reserved.

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