【摘要】 研究目的:地震引发的边坡病害与一般条件下的边坡病害类型有所不同,其作用机理和变形破坏模式各异,且危害巨大。为了有针对性地进行预防和治理,在对受"5·12"汶川特大地震影响的都汶公路汶川—映秀段等3段沿线边坡病害调查的基础上,通过边坡病害类型、坡体结构及其发生机制的分析研究,归纳总结出地震引发边坡病害的变形破坏模式。研究结论:(1)震区边坡病害主要有崩塌、滑坡、坍塌、错落和落石5类,其中崩塌是最主要的边坡病害,约占总病害量的71%;发生于岩质边坡的病害最多,占总病害边坡的80%。(2)边坡病害的变形破坏模式崩塌有拉裂-坠落型等8种,滑坡有拉裂-剪断-滑移型等5种,坍塌有震动松弛-坍塌型等2种,落石有抛落型和掉落型2种,错落有震动-挤压型1种。(3)本研究对铁路、公路等地震引发边坡病害的预防和治理具有一定的参考与应用价值。更多还原

【Abstract】 Research purposes: The slope diseases caused by earthquake are different from other types of slope diseases in general. They have various mechanism and deformation failure modes and can cause large damages. In order to prevent and control these diseases pointedly,based on investigations of 3 slope diseases along the Wenchuan-Yingxiu Road influenced by the "5·12" Wenchuan Earthquake,the analyses and researches were made and done on the slope diseases types,slope structures and mechanism to summarize the deformation failure modes of slope diseases caused by earthquake. Research conclusions:(1) The main types of slope diseases include the collapse,landslide,slumping,fault and rockfall. Collapse is the major disease,up to 71% of the total slope diseases. About 80% diseases happens to rock slope.(2) The deformation failure modes of collapse have 8 types like pull cracking and falling. Landslide has 5types like pull cracking,shearing off and sliding. Slumping has 2 types of shaking loose and slumping. Rock falling has 2 types of throwing and dropping. Disorder falling has 1 type of shaking to crimping.(3) This research result can provide the reference to prevention and control of the slope diseases caused by earthquakes along railways and roads.更多还原