RAYLEIGH WAVE VELOCITY FOR FROST SUSCEPTIBLE VOLCANIC ASH DEPOSITS IN ASAMA VOLCANO
作者单位：Akita National College of TechnologyAkita 011 Japan Civil Engineers Co.Ltd.Tokyo 110 Japan Mitsui Construction Co.Ltd.Tokyo 110 Japan
会议名称：《岩石力学与环境岩土工程国际会议》
会议日期：1997年
学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学]
关 键 词：Rayleigh wave method frost heave volcanic ash
摘 要：正In the regions covered with pyroclastic fall deposits,most of the frost-heave damages of road relates to hydrogeological conditions of a location.In this study,emphasis is given to the effect of soil stratification on the frost damages of road.As a geological exploration Rayleigh wave method was employed for the ashy deposits in the foot of Asama volcano.The frost damages attributed to geological conditions can be summarized as following two forms:（1）Frost damages dominated by the thickly covered,high-heaving soils,（2）Frost damages dominated by drainage conditions of roadbed formed by low-heaving soils.The low-heaving soils easily become mid-heaving soils if once groundwater flows into the soils.