Abstract
This paper highlights the importance of site characterization for predicting deep excavation behaviour and usefulness of field instrumentation in evaluating stiffness properties of backfilled soil through analysing a deep excavation carried out at a nuclear facility site located along East Cost of India. The field-monitored data along with finite element software were employed to predict the behaviour of soil during deep excavation. A series of back-calculations were performed in finite element software by varying stiffness properties, using different soil models, and displacements obtained were compared with those obtained from filed. This coupled analysis provided an insight into in situ stiffness properties of backfilled soil, which can be used for analysing and optimizing future excavations in backfilled soil as part of infrastructure development and expansion of facilities.
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