Abstract:

Abstract:  The deformation fracture of mountains caused by earthquake is a complicated evolved process. In this paper, three typical geomechanics modes are summarized and concluded, i.e. the outerinclining bedded landslide model, the highsteep block (layer) bedded slope collapsing model and the weak base landslide model, which are representative for the deformation fracture and instability of mountains in areas with high earthquake intensity. We have also indigenously developed, designed and explored a set of geomechanics modeling test equipment, models and techniques under vibration to conduct the mechanism modeling test of the three typical geomechanics models, concepts and models. Through the modeling reproduction test of the evolved process of deformation fracture, typical phenomena and important evidence of deformation fracture under vibration are shown and formation conditions, relevant factors and evolvement principles of typical earthquake instability mechanism are presented to offer scientific and reliable test data and evidences for further research and analysis.

Key words: Key words: areas with high earthquake intensity; deformation fracture mechanism of mountain; typical geomechanics model;  modelling test under vibration