| 地震重灾区诱发次生地质灾害风险评价研究 |
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| 引用本文： | 李天华,袁永博.地震重灾区诱发次生地质灾害风险评价研究[J].西北地震学报,2018,40(1):111-115. |
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| 作者姓名： | 李天华 袁永博 |
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| 作者单位： | 大连理工大学建设工程学部; |
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| 摘 要： | 为了揭示地震重灾区与次生地质灾害的关联性,以某地震灾区为例,在分析次生地质灾害类型与危害的基础上,通过计算一次泥石流总量及流量确定其危险度,并引入易损性指数,确定各评价单元次生山地灾害的易损性大小,设置评价指标;结合研究区实际,采用层次分析法构建次生地质灾害风险评价模型,对地震重灾区诱发次生地质灾害风险进行评价。实验以次生地质灾害中的泥石流产生的灾害风险为例进行研究,结果表明,采用本文研究方法可在有效确定地震重灾区诱发次生地质灾害的位置方面具有一定优势,但在纵向地震造成次生地质灾害风险评价方面需进一步进行研究。
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| 关 键 词： | 地震 重灾区 诱发 次生地质灾害 风险 评价 |
| 收稿时间： | 2017/8/20 0:00:00 |
Risk Assessment of Secondary Geological Disasters Induced in an Earthquake-Stricken Area |
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| LI Tianhua and YUAN Yongbo.Risk Assessment of Secondary Geological Disasters Induced in an Earthquake-Stricken Area[J].Northwestern Seismological Journal,2018,40(1):111-115. |
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| Authors: | LI Tianhua and YUAN Yongbo |
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| Institution: | Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China and Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China |
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| Abstract: | This paper shows the relevance of an earthquake-stricken area and secondary geological disasters based on the analysis of secondary geological disaster types and harms, and taking an earthquake disaster area as an example, the total value and discharge of debris flow in the area are calculated to determine the risk of debris flow. The vulnerability index is introduced to determine the vulnerability of secondary mountain hazard of each assessment unit. Combined with the actual situation of the studied area, an evaluation model for determining the risk of secondary geological disasters is established based on analytic hierarchy process, and the model can be used to evaluate the risk of secondary geological disasters induced in earthquake disaster areas. Taking the disaster risk triggered by debris flow as an example, an experimental study is performed, and the results indicate that the proposed method in this paper can effectively determine the location of secondary geological disasters induced in the earthquake disaster area. However, the risk assessment of secondary geological disasters induced by longitudinal earthquakes much be studied further. |
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| Keywords: | earthquake earthquake-stricken area induce secondary geological hazard risk evaluation |
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