李秀珍, 孔纪名, 田述军, . 2010: 汶川地震滑坡与地震参数及地质地貌因素之间的相关关系. 工程地质学报, 18(1): 8.
    引用本文: 李秀珍, 孔纪名, 田述军, . 2010: 汶川地震滑坡与地震参数及地质地貌因素之间的相关关系. 工程地质学报, 18(1): 8.
    LI Xiuzhen, KONG Jiming, CUI Yun, TIAN Shujun. 2010: STATISTICAL RELATIONS BETWEEN LANDSLIDES INDUCED BY WENCHUAN EARTHQUAKE AND EARTHQUAKE PARAMETERS,GEOLOGICAL AS WELL AS GEOMORPHOLOGICAL FACTORS. JOURNAL OF ENGINEERING GEOLOGY, 18(1): 8.
    Citation: LI Xiuzhen, KONG Jiming, CUI Yun, TIAN Shujun. 2010: STATISTICAL RELATIONS BETWEEN LANDSLIDES INDUCED BY WENCHUAN EARTHQUAKE AND EARTHQUAKE PARAMETERS,GEOLOGICAL AS WELL AS GEOMORPHOLOGICAL FACTORS. JOURNAL OF ENGINEERING GEOLOGY, 18(1): 8.

    汶川地震滑坡与地震参数及地质地貌因素之间的相关关系

    STATISTICAL RELATIONS BETWEEN LANDSLIDES INDUCED BY WENCHUAN EARTHQUAKE AND EARTHQUAKE PARAMETERS,GEOLOGICAL AS WELL AS GEOMORPHOLOGICAL FACTORS

    • 摘要: 在对汶川地震诱发的典型滑坡进行野外调查和相关资料收集、分析和整理的基础上,对汶川地震滑坡与地震参数及坡度、岩土体特性等地质地貌因素之间的相关关系进行了统计分析。结果表明: (1)汶川地震滑坡主要发生在Ⅶ~Ⅺ烈度区, Ⅵ度及以下烈度区中发生的滑坡较少; (2)汶川地震滑坡主要发生在距震中300km的范围内,且距震中200km的范围内滑坡分布最为集中; (3)汶川地震滑坡的易发斜坡坡度为30~50,其中30~40是汶川地震滑坡发育最为敏感的坡度; (4)汶川地震滑坡主要发生在600~1500m的高程范围内,在600~1000m高程范围内的中低山和丘陵区滑坡分布最为集中; (5)砂泥岩、板岩、片岩、千枚岩等软岩类和土质类岩性是汶川地震滑坡的易发岩性,其次是软硬岩组合类,在统计的47个典型滑坡中,花岗岩、碳酸盐岩等硬岩类中发生的滑坡最少,而且由汶川地震直接导致复活的老滑坡也比较少。

       

      Abstract: This paper is based on investigations of the landslides induced by Wenchuan Earthquake and collection and analysis of the related data. It presents the statistical relations between the earthquakeinduced landslides and other factors including earthquake parameters,geological and geomorphological factors. The results show that: (1)the landslides caused by Wenchuan earthquake mainly occurred in the Ⅶ~Ⅺ intensity districts,there were rather fewer landslides in the Ⅵ and below intensity districts; (2)the earthquakeinduced landslides mainly occurred in the area 300 km from the epicenter,and intensively distributed in the area 200 km from the epicenter; (3)the slopes with the dip angle of 30~50,especially 30~40,are very easy to slide during Wenchuan Earthquake; (4)the earthquakeinduced landslides mainly distributed in the elevation range of 600~1500m,especially 600~1000 m; (5)soft rocks such as mudstone,shale,schist and so on,are the easiest to slide during Wenchuan Earthquake; the combination of soft and hard rocks is secondary to slide; and hard rocks such as granite and carbonate rocks are not easy to slide; only a few old landslides were reactivated by Wenchuan Earthquake.

       

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