[1]蒋志林,朱静,常鸣,等.汶川地震区红椿沟泥石流形成物源量动态演化特征[J].山地学报,2014,(01):81.
 JIANG Zhilin,ZHU Jing,CHANG Ming,et al.Dynamic Evolution Characteristics of Hongchun Gully Source Area of Debris Flow in Wenchuan Earthquake Region[J].Mountain Research,2014,(01):81.
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汶川地震区红椿沟泥石流形成物源量动态演化特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2014年01期
页码:
81
栏目:
山地灾害
出版日期:
2014-01-01

文章信息/Info

Title:
Dynamic Evolution Characteristics of Hongchun Gully Source Area of Debris Flow in Wenchuan Earthquake Region
作者:
蒋志林;朱静;常鸣;唐得胜;黄勋
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,四川 成都 610059
Author(s):
JIANG ZhilinZHU JingCHANG MingTANG DeshengHUANG Xun
State Key Laboratory for Geo-Hazard Prevention and Geo-Environment Protection, Chengdu University of Technology, Chengdu 610059, China
关键词:
汶川地震泥石流滑坡动态演变遥感解译
分类号:
P642.23
文献标志码:
A
摘要:
2008年"5·12"汶川地震时,映秀-北川断裂通过的映秀镇红椿沟流域内产生了大量的碎屑体,约为384.3×104m3,为泥石流的发生提供丰富的固体物源条件。2010-08-14,红椿沟暴发特大型泥石流,冲断公路,堵塞岷江致使江水改道,威胁映秀新区。为研究物源区演变特征,选取3期影像,并结合野外调查资料,通过ArcGis分析发现:地震前,红椿沟植被良好,未发现大规模地质灾害,流域内沟道均属于清水沟。地震后,流域内滑坡崩塌数量为68处,滑坡面积为101.12×104m2,沟道总长度5 752 m,沟道总面积11.82×104m2。受上盘效应影响,沟右岸滑坡发育强于左岸,左岸大多为小型浅层滑坡。2010年"8.14"泥石流后,受地表径流和泥石流的冲刷、侵蚀、切割作用影响,使部分滑坡"复活"或产生新的滑坡,流域内滑坡个数77处,新增9处,变化率为13.23%,滑坡面积139.80×104m2,新增38.68×104m2,变化率38.25%。沟道总长度8 851 m,新增3 099 m,沟道总面积17.48×104m2,新增5.66×104m2。泥石流暴发后,流域内仍有固体物源量约为344.6×104m3,泥石流治理工程可控制物源量约为92.8×104m3,在极端降雨条件下,仍有暴发大规模泥石流的可能。

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备注/Memo

备注/Memo:
收稿日期(Received date):2013-03-04;改回日期(Accepted) : 2013-04-15。
基金项目(Foundation item):科技基础性工作专项项目(编号:2011FY110100)和地质灾害防治地国家重点实验室自主研究基金(SKLGP2011Z008)。[Supported by the Ministry of Science and Technology of China(Grant No. 2011FY110100) and Independent research fund of State Key Laboratory of Geohazard Prevention and Geo-environment Protection (SKLGP2011Z008).]
作者简介(Biography):蒋志林(1987-),男,硕士研究生,研究方向:工程地质、地质灾害、遥感与GIS应用。 [Jiang Zhilin (1987-),male,graduate student, work mainly on engineering geology,geological disasters,RS and GIS applically.] E-mail:652019285@qq.com
更新日期/Last Update: 1900-01-01