汶川地震区典型堆积体成灾模式研究
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摘要
汶川特大地震后地质灾害调排查表明,不同的地形地貌、地质结构、地层岩性对震后堆积体的变形破坏模式差距较大。根据现场调查成果,结合室内分析,总结归纳出汶川地震区四种典型的成灾模式,即滑移型、冲刷型\崩塌型和碎屑流型。在此基础上,对不同成灾发展演化过程、发育分布特征,以及变形破坏与堆积体边坡岩土结构、地形地貌、降雨等的关系进行了深入系统地研究,提出了汶川地震区大型堆积体变形破坏的一般地质条件。
The geological investigation at Wenchuan earthquake area has shown that the deformation and failure mode of different topography,geological structure,formation lithology for earthquake accumulation body are of great difference.Based on the field investigation and analysis,the typical failure mode of accumulation body can be classified into 4 types as slip type,flush type/collapse type and debris flow type.Based on the classification,the further examination are presented.They include the evolutionary processes,development and distribution characteristics,and relationship with accumulation slopes soil structures,landform,geomorphy and rain.Finally the general geological conditions fore forming typical failure mode of accumulation slopes are summarized.
The geological investigation at Wenchuan earthquake area has shown that the deformation and failure mode of different topography,geological structure,formation lithology for earthquake accumulation body are of great difference.Based on the field investigation and analysis,the typical failure mode of accumulation body can be classified into 4 types as slip type,flush type/collapse type and debris flow type.Based on the classification,the further examination are presented.They include the evolutionary processes,development and distribution characteristics,and relationship with accumulation slopes soil structures,landform,geomorphy and rain.Finally the general geological conditions fore forming typical failure mode of accumulation slopes are summarized.
引文
[1]黄润秋.汶川地震地质灾害研究[M].北京:科学出版社,2009.
[2]四川省国土资源厅,四川省地矿局水文地质工程地质队,四川省地质环境监测总站.四川省县市地质灾害调查与规划[R].成都:四川省地质环境监测总站,2010.
[3]黄润秋.汶川大地震触发的地震效应分析[J].工程地质学报,2009,17(1):19-28.
[4]甘建军,黄润秋,李前银,等.都汶公路地质灾害特征及形成机制初步研究[J].工程地质学报,2010,18(1):396-405.
[5]四川省地质矿产勘查开发局,成都理工大学,四川省地质环境监测总站,等.国道213线都江堰至汶川公路抢通保通工程地质灾害应急调查报告[R].成都:四川省国土资源厅,2008.
[6]甘建军,孙海燕,黄润秋,等.汶川县映秀镇红椿沟特大型泥石流形成机制及堵江机理研究[J].灾害学,2012,27(1):5-9.
[7]汤明高,许强,黄润秋.三峡库区典型塌岸模式研究[J].工程地质学报,2006,14(2):172-178.
[2]四川省国土资源厅,四川省地矿局水文地质工程地质队,四川省地质环境监测总站.四川省县市地质灾害调查与规划[R].成都:四川省地质环境监测总站,2010.
[3]黄润秋.汶川大地震触发的地震效应分析[J].工程地质学报,2009,17(1):19-28.
[4]甘建军,黄润秋,李前银,等.都汶公路地质灾害特征及形成机制初步研究[J].工程地质学报,2010,18(1):396-405.
[5]四川省地质矿产勘查开发局,成都理工大学,四川省地质环境监测总站,等.国道213线都江堰至汶川公路抢通保通工程地质灾害应急调查报告[R].成都:四川省国土资源厅,2008.
[6]甘建军,孙海燕,黄润秋,等.汶川县映秀镇红椿沟特大型泥石流形成机制及堵江机理研究[J].灾害学,2012,27(1):5-9.
[7]汤明高,许强,黄润秋.三峡库区典型塌岸模式研究[J].工程地质学报,2006,14(2):172-178.
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