| 汶川县雁洛大型堆积体特征及成因 |
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| 作者姓名： | 冯倩倩 王运生 罗越 刘江伟 明伟庭 郭凤双 |
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| 作者单位： | ( 1. 成都理工大学 地质灾害防治与地质环境保护国家重点实验室, 成都 610059; 2. 四川航天职业技术学院 管理工程系, 四川 广汉 618300) |
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| 基金项目： | 国家重点研发计划( 2017YFC1501000) ; 国家自然科学基金( 41877235) ; 国家创新研究群体科学基金( 41521002) ; 地质灾害防治 与地质环境保护国家重点实验室自主课题基金 ( SKLGP2015Z001) |
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| 摘 要： | 基于详细的野外调查,对汶川县雁门乡雁洛村发育的大型堆积体的基本特征、形成及演化过程进行较深入研究,结果表明:雁洛堆积体为残坡积、崩坡积、类黄土堆积以及滑坡堆积等4部分组成的复合堆积,平面上可分2个大区、6个次级区;结合侧缘基岩变形迹象以及UDEC数值模拟对滑坡的形成机制进行分析,其变形破坏模式为弯曲-拉裂模式;雁洛堆积体演化经历早更新世宽谷期黄土堆积阶段,中、晚更新世峡谷期谷坡卸荷变形阶段,峡谷区滑坡形成阶段,全新世堆积体复活变形阶段等4个阶段。
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| 关 键 词： | 雁洛堆积体 物质组成 成因 倾倒变形 演化过程 |
Characteristics and mechanism of Yanluo giant deposit in Wenchuan County |
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| Authors: | FENG Qianqian WANG Yunsheng LUO Yue LIU Jiangwei MING Weiting GUO Fengshuang |
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| Affiliation: | ( 1. S tate K ey Laborator y of Geohaz ard Prevention and Geoenvir onment Pr otection, Chengdu University of Technology , Chengdu 610059, China; 2. Department of Management and Engineering , Sichuan Aeros pace Poly technic, Guanghan 618300, China) |
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| Abstract: | The basic characteristics, formation, and evolution process of the large-scale accumulations developed in Yanluo Village , Yanmen Tow nship, Wenchuan County are studied based on detail field investig ations. The results show that: Yanluo depos it is a complex origin deposit that made up of residual and slope deposit, colluvium, loess like and landslide deposit , and it can be divided into two zones and six sub-zones; the failure modes of the evolution process of Yanluo depo sit are " bend-crack" which is simulated by UDEC so ftware; The 4 evolution phases of Yanluo deposit may be summarized as loess accumulation stage in early Pleistocene, unloading and deformation stage in middle-late Pleistocene, landslide formation stage, deposit reactivated and defo rmation stage in Holocene, respectively |
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| Keywords: | Yanluo giant deposit deposit composition mechanism toppling deformation evolution process |
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