EVALUATION OF INSTABILITY OF SLOPES UNDER HEAVY RAINFALL BASED ON REALTIME MONITORING OF DEFORMATION AND WATER CONTENTS
Sensing and monitoring are cost-effective countermeasures against slope failure disasters.Criteria of issuing warning based on the monitored data are essential for this purpose.Two methods are widely employed at present.The one is monitoring the rainfall intensity,and warning is issued when the amount of rainfall exceeds a prescribed critical value.The other one is monitoring the displacement on the surface of slopes,and warning is issued when the displacement rate exceeds a critical value.However,the criteria of both methods are defined empirically,and neither of them is based on physical characteristics of slope materials and structures.In this paper,results from model tests,element tests,and a field test are reported,and an attempt to establish new criteria of issuing warning for slope failures is presented.Relations between the deformation and the volumetric water content of unsaturated soils are observed in the tests.And,some examples of idea to use combined sets of data on the displacement and the volumetric water content of slopes.
slope failure monitoring early warning deformation water content
T.UCHIMURA SUZUKL D. GETIE.G. YAMADA.S. TOWHATA.I. WANG.L. SEKO.I. NISHIE.S. QIAO.J.P.
University of Tokyo,7-3-1 Hongo,Bunkyo-city,Tokyo,Japan Chuo Kaihatsu Co.Ltd.,Nishi-waseda 3-13-5,Shinjuku-city,Tokyo,169-8612,Japan Institute of Mountain Hazards and Environment of CAS,Chengdu City,Sichuan,China
国际会议
5th China-Japan Geotechnical Symposium(第五届中日岩土工程学术会议)
成都
英文
429-436
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）