青海玉树M_S7_1级地震地质灾害主要特征青海玉树M_S7_1级地震地质灾害主要特征.pdfVIP

Journal of Eng ineering Geology 工程地质学报 1004- 9665/2010/ 18( 3)-0289-08 M S 71 殷跃平 张永双 马寅生 胡道功 张作辰 ( 100037) ( 100081) 20 10 4 14 7 49, M S 71, , , , , : P642 : A RESEARCH ON MAJOR CHARACTERISTICS OF GEOHAZARDS IN- DUCED BY THE YUSHUM S 71 EARTHQUAKE Y IN Yueping ZHANG Yongshuang MA Y insheng HU D aogong ZHANG Zuochen ( Ch ina G eolog ical Surv ey, B e ij ing 100037) ( Institu te of Geom echan ics, Ch inese A cademy of G eolog ical Sc iences, B e ij ing 100081) Abstract The YushuM S 71 earthquake w as happened at 7: 49 on April 14, 2010 in Yushu count ofQ inghai province. Besides continuous surface rupture and a large number of properties collapse, the t pes of geohazards in- duced b earthquake include rock fall, landslide, potential debris flow, etc. In addition, the geohazards can be ag- gravated b the earthquake-induced sand soil liquefaction, as well as burst of a channel, in local areas. Based on field investigation and comparison of the geohazard data before and after theYushu earthquake, the authors summ a- rize themajor characteristics of theYushuM S 71 earthquake, such as the amount of geohazard increasing obviousl after the earthquake, the distribution of geohazards controlled b the active fau lts, the low-position soil/colluvial landslides predom inant, the effect of geohazard chain being notab le, etc. some proposals for geohazard control during reconstruction have been given forth in th is paper. K ey w rds Yushu earthquake, Geohazard induced b earthquake, Sand soil liquefaction, Low-position land- slide, Earthquake rupture * : 2010 - 05- 20; : 2010 - 06- 02. : ( 2006BAC04B 02) ( No. 1212011014035). : , . Em ail: uep ing@ m a ilcgsgovcn 290