Behaviour of large underground cavern during construction in himalayas - a case study
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Date
2014
Authors
Naik, S.R.
Sastry, V.R.
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Abstract
Construction of large underground caverns in Himalayas is challenging due to complex geological and insitu stress conditions. Understanding the behaviour of such caverns during construction stage is possible only with extensive instrumentation. A case study of a large cavern under construction in Himalayan region in Bhutan is considered. Results from various types of instruments are discussed in this paper. Instrumentation data shows that Himalayan rock mass particularly with phyllitic quartzite exhibits large deformations thus requiring careful selection of support and excavation methodology. 2014 CAFET-INNOVA TECHNICAL SOCIETY.
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International Journal of Earth Sciences and Engineering, 2014, Vol.7, 4, pp.1601-1610