GROUND MOVEMENTS CAUSED BY TUNNELLING IN CHALK.

Keywords: CHINNOR, OXFORDSHIRE, UK, GROUND, CHALK, TRIALS, OBSERVATIONS, RESPONSES, REACTIONS, TESTS, INFLUENCE, BEHAVIOUR, MASS, ANALYSIS, MODELS, INSTRUMENTATION, REDUCTION, MOVEMENT, TUNNELS, LOWER CHALK, MEASUREMENT, CONSTRUCTION, RINGS, LONG TERM, SUPPORTS, THEORY, PREDICTION, FIELD, FINITE ELEMENTS, TUNNELLING, MECHANISED, SITES, RESEARCH, SHORT TERM, JACKING, EXCAVATING, METHODS, ROCKS, STRESS, IDEALISED, CONDITIONS, MODULUS, DURHAM UNIVERSITY, TRRL, TRANSPORT AND ROAD RESEARCH LABORATORY