PNEUMATIC-HYDRAULIC MATERIAL TRANSPORT SYSTEM FOR RAPID EXCAVATION OF TUNNELS

The objective of this study is to advance the technology of tunnel excavation by analyzing the application of pneumatic and slurry pipelines for increasing the rate of muck removal from the tunnel face. A computer simulation was used to analyze the cost-performance of the pipeline transportation system. This report discusses the results of a two-phase study on rapid excavation. The first phase aims to model the performance of the proposed transport system so that parametric analyses can be performed to determine the applicability of the system and, the second phase aims to model the cost-performance of the system in which grinding at the face by the tunnel-boring machine is minimized while the cutter wear life is maximized. A crushing circuit is provided for the much to reduce the energy requirements for pipeline transportation, both pneumatically and hydraulically. The pneumatic pipeline provides the necessary extensibility by telescoping pipe to convey the muck from the advancing tunneling machine to the stationary high capacity slurry pipeline for rapid long distance transportation. The system concept is based entirely on commercially available equipment with minimum modifications necessary to adapt it to tunnel geometry. Unit transportation costs for several system designs are also discussed herein. /UMTA/

  • Availability:
  • Supplemental Notes:
    • Sponsored by the Urban Mass Transportation Administration.
  • Corporate Authors:

    Colorado School of Mines

    1500 Illinois Street
    Golden, CO  United States  80401
  • Authors:
    • Faddick, R R
    • Martin, J W
  • Publication Date: 1974-8

Media Info

  • Pagination: 151 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00195948
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • ISBN: MA-06-0025
  • Report/Paper Numbers: UMTA-MA06-0025-79-13Final Rpt.
  • Contract Numbers: DOT-OS-30123
  • Files: TRIS, USDOT
  • Created Date: Sep 15 1979 12:00AM