سال انتشار: ۱۳۹۰

محل انتشار: نهمین همایش ملی تونل

تعداد صفحات: ۶

نویسنده(ها):

Nima Enferadi – Tunnel Engineer, Parsons Brinckerhoff
Volkan Tellioglu – Tunnel Engineer, formerly with Parsons Brinckerhoff

چکیده:

This paper discusses the stability assessment and performance of a pillar situated at the headwall of a large cavern which accommodates a Y-junction between a TBM tunnel and merging drive of an entry ramp mined tunnel in moderately strong rock