地质灾害分布规律及主控要素分析——以甘洛县为例

doi:10.19388/j.zgdzdc.2024.03.13

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摘要甘洛县地质灾害频发多发,严重威胁当地群众生命财产安全,影响社会经济的和谐发展。介绍了甘洛县地理位置、气象水文、地层岩性、断裂构造及人类工程活动,研究了地质灾害时间和空间分布规律,通过层次分析法和判断矩阵法分析了地质灾害的主控要素。结果表明: 在时间上,发灾时间集中在每年7—9月(期间发生灾害的数量占全年总灾害数量的90%以上),且与雨季雨量关系密切; 在空间上,主要沿河流、沿断层带状分布,与易滑地层分布一致,并与人类工程活动区域高度重叠; 区内地质灾害主控因素为地形地貌、地层岩性以及与断层距离。研究成果可为区内自然资源、应急管理等部门制定综合治理和监测预警等自然灾害防灾减灾决策提供参考。

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	唐尧
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关键词 ：地质灾害, 分布规律, 甘洛县, 主控要素

Abstract：Geological disasters occur frequently in Ganluo County, which seriously threatens the safety of local people's lives and property, and affects the harmonious development of the social economy. The geographical location, meteorology and hydrology, geological lithology, fault structures, and human engineering activities of Ganluo County were induced, and the spatial and temporal distribution of geological disasters were analyzed. And the main controlling factors of geological disasters were analyzed through Analytic Hierarchy Process and judgment matrix. The results show that in terms of time, the occurrence of disasters is concentrated from July to September each year (accounting for more than 90%), and is closely related to the rainy season rainfall. Spatially, it is mainly distributed along rivers and fault belts, and is consistent with the distribution of slip prone strata and highly overlapping with human engineering activity areas. The main controlling factors for geological disasters in the area are terrain, geomorphology, lithology and distance from fault. This research result could provide references for natural resources, emergency management and other departments in this area to formulate comprehensive management, monitoring and early warning and other natural disaster prevention and reduction decisions.

Key words： geological hazards distribution law Ganluo County main control factors

收稿日期: 2023-11-15

中图分类号:

X87

基金资助:四川省科技厅软科学研究项目“四川省自然灾害综合监测预警建设及综合风险评估研究(2023JDR0045)”与重大危险源测控四川省重点实验室开放课题“重特大地质灾害全过程模拟应急救援及法治保障研究(KFKT-2023-03)”联合资助

作者简介: 唐尧(1985—),男,高级工程师,主要从事自然灾害遥感监测与应急处置方面的研究。Email: tangyao985@163.com。

引用本文:

唐尧, 王立娟, 李力生, 靳晓. 地质灾害分布规律及主控要素分析——以甘洛县为例[J]. 中国地质调查, 2024, 11(3): 101-107.
TANG Yao, WANG Lijuan, LI Lisheng, JIN Xiao. Analysis of the distribution law and main control factors of geological hazards: A case study of Ganluo County. , 2024, 11(3): 101-107.

链接本文:

http://journal25.magtechjournal.com/Jwk_dzdc/CN/10.19388/j.zgdzdc.2024.03.13 或 http://journal25.magtechjournal.com/Jwk_dzdc/CN/Y2024/V11/I3/101

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