【摘要】 在对汶川地震后映秀～卧龙公路边坡崩塌地质灾害详细调查研究的基础上,以发生崩塌的边坡的物质组成、崩塌灾害的发生时间、运动方式、崩塌形成机理和崩塌物源与路基的关系等方面作为分类依据,提出了震后公路边坡崩塌灾害的初步分类。按照崩塌的边坡的物质组成,震后崩塌灾害可分为岩质边坡崩塌、土质边坡崩塌和岩土组合边坡崩塌。根据崩塌灾害发生时间,将震后崩塌灾害分为新生崩塌、复发崩塌和继发崩塌。根据崩塌块体运动方式,震后崩塌灾害可分为弹跳式崩塌、滚落式崩塌和滑动式崩塌。根据形成机理,震后崩塌可分为震裂-滑移式、震裂-倾倒式、震裂-溃屈式和震裂-错断式。根据崩塌物源与路基关系,震后崩塌灾害可以分为近源崩塌、远源崩塌。更多还原

【Abstract】 On the basis of site investigation on the post-earthquake rockfalls of the slopes of Yingxiu-Wolong Highway,preliminary classification of post-earthquake rockfalls of highway slope is proposed from the aspects of slope composition,rockfall time,movement mode of falle rocks,mechanism and the relationship between the source of falled materials and road.The rockfall is classified as rocky-slope,soil slope and composite slope ones according to the composition of the slope.In terms of the occuring time of rockfall,it is classified as newly-occured,re-occured and afterwards-occured ones.It may be grouped into jumped rockfall,fall-and-rolled rockfall and slided rockfall according to the movement mode of ralled rocks.Based on the comprehensive study on the rockfall disasters after earthquake,the mechanisms about how rockfalls happened are: quake-induced rupture-sliding,quake-induced rupture-toppling,quake-induced rupture-buckling failure and quake-induced rupture dislocation respectively.The rockfall is categorized as close-source one and far source one according to the relationship between the source of falled materials and road.更多还原