Feasible Tunnel Construction Options for The Systems Conveyance & Operations Program Reach 3 Tunnel
Abstract
The Systems Conveyance and Operations Program (SCOP) is being implemented to convey tertiary treated effluent to Lake Mead near Las Vegas, Nevada. The Reach 3 Tunnel Project is part of SCOP. The tunnel’s planned location along and across the Las Vegas Wash creates challenging tunneling conditions. A number of feasible excavation and initial support methods are being considered during the final design stage. This paper describes how the tunnel construction options were refined based on anticipated tunneling conditions and compatibility between tunnel excavation and initial support methods. A brief description of the most significant characteristics of the anticipated ground conditions is included for the purpose of discussion.
2009
Rapid Excavation and Tunneling Conference (RETC) Proceedings
S.H. Jason Choi
Jacobs Associates
Scott Ball
MWH Americas, Inc.
Sean Tokarz
MWH Americas, Inc.
Jim Devlin
Clean Water Coalition
