Qomroud Long Water Conveyance Lot No. 1 in Iran: Tunneling in Difficult Ground Condition- A Case Study

Research output: Contribution to conferencePaper

Abstract

This paper presents a case study of the effects of changed and severe geological conditions on trend of construction of lot number 1 of Qomroud Long Tunnel (QLT1) in Iran. Initially, drill and blast method was selected as construction method based on results from initial stage geological investigations. Construction of QLT1 started from three faces simultaneously: main tunnel and access tunnels no. 1 and 2. The instability problems were encountered during excavation of the tunnels. Following major instabilities construction of the tunnels was stopped and a complementary geotechnical investigations was carried out. Medium to hard rocks in primary geological-geotechnical profile replaced by weak to medium rocks with near to 1.50 km of fine-grained saturated soils. Results from new investigations presented in this paper and some geological-geotechnical considerations proposed to continue construction of the QLT1.
Original languageEnglish
Publication statusPublished - 2005
EventTunnel Designs and Systems Engineering International Conference - Basel, Switzerland
Duration: Sep 10 2005Sep 13 2005

Conference

ConferenceTunnel Designs and Systems Engineering International Conference
CountrySwitzerland
CityBasel
Period9/10/059/13/05

Fingerprint Dive into the research topics of 'Qomroud Long Water Conveyance Lot No. 1 in Iran: Tunneling in Difficult Ground Condition- A Case Study'. Together they form a unique fingerprint.

Cite this