Continuous Slipformed-Concrete Lining System Compatible with the Blind Shaft Boring Machine. Final Technical Report as of June 1978.

摘要

This report describes the design of a continuous shaft lining system and a continuously extendible service line extension system to be utilized in conjunction with the Blind Shaft Boring Machine. The objective of this design program is to allow the BSB to operate an a continuous basis,free from interference and interruptions caused by the present lining and service line extension system. Detailed designs of both the continuous lining system and continuously extendible service line system are provided. A detailed cost analysis is performed and describes the capital,operating,and ownership costs for both systems. With an assumed amortization over six shafts of 2000foot depth,the total of all costs amount to $307per foot for the lining system and $68per foot for the service line system. The savings to be realized by increased shaft sinking rates were not considered in this program. Finally, a discussion of a future field test is presented which will fully demonstrate the capabilities of the Rapidex Continuous Shaft Lining System,prior to proceeding to a full scale test with the BSB. 33figures, 11tables. (ERA citation 04:017763)