STUDY ON SHOCK LIQUEFACTION OF SAND LAYERS BELOW DAM FOUNDATION OF THE HADASHA WATER CONSERVANCY PROJECT

Shock liquefaction of sand layers is a principal engineering geological problem for the Hadashan water conservancy project. An in-depth study has been carried out on it through numerous tests and comprehensive analysis, including SPT, GJS undisturbed sampling, OYO-3000 density log and Rayleigh wave measurement. The obtained results provide an important basis for dam foundation treatment. In this study, the Rayleigh wave measurement technique is first used for assessment of shock liquefaction of sand layers.