Urban Rail Tunneling Technology Program Digest

摘要

This document is a digest of the UMTA program in tunneling technology. It is intended to be read by a wide audience so as to broaden the base of disciplines which can contribute new ideas toward meeting UMTA's objectives in transit construction. In this digest report, the UMTA tunneling projects are organized into nine subject areas: (1) cost estimating; (2) socioeconomic and environmental impacts; (3) contracting and management; (4) monitoring of construction progress; (5) subsurface exploration; (6) ground support systems; (7) excavation technology and much transport; (8) design and construction guidelines; and (9) lining and support systems.