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甘肃省地质灾害发育特征

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甘肃省地质环境条件复杂,受极端天气、地震及人类工程活动等影响,区内地质灾害多发、频发,防灾减灾形势严峻.为进一步查清甘肃省地质灾害现状发育特征,在甘肃省1:50 000地质灾害风险调查最新数据分析的基础上,分析了全省地质灾害灾情险情特征、总结了地质灾害时空分布规律及致灾特征.研究结果表明:①甘肃省地质灾害以崩塌、滑坡、泥石流为主,灾害规模多为中小型;②在空间分布上,地质灾害主要集中分布于甘肃省中部和东南部的9个市州,属于黄河流域及黄土高原区、白龙江流域及陇南山地;③在时间分布上,5-9月主汛期是地质灾害高发期,以7月下旬—8月上旬最为严重;④地质灾害具群发致灾、隐蔽致灾和链式致灾特征.研究成果可为区域地质灾害风险管控和应急管理提供一定的技术依据和参考.
Development Characteristics of Geological Hazards in Gansu Province
The geological environment in the Gansu Province is complex.Affected by extreme weather,earthquakes and human en-gineering activities,geological disasters occur frequently in the Gansu Province,and the situation of disaster prevention and reduction is grim.In order to further investigate the current development characteristics of geological disasters in Gansu Province,based on the analysis of the latest data of 1:50 000 geological disaster risk survey in Gansu Province,the characteristics of geological disasters in the whole province were analyzed,and the spatial and temporal distribution rules and characteristics of geological disasters were summa-rized.The results show these as follows.The geological disasters in Gansu Province are mainly collapse,landslide and debris flow,the scale are mostly small and medium-sized.In terms of spatial distribution,the geological disasters are mainly distributed in 9 cities in the central and southeast of the Gansu province,belonging to the Yellow River basin and Loess Plateau,the Bailong River basin and the Longnan Mountains areas.In terms of time distribution,the main flood season from May to September is the peak period for geological disasters,with late July to early August being the most severe.Geological disasters had the characteristics of mass disaster,hidden disaster and chain disaster.The research results can provide certain technical basis and reference for regional geological disaster prevention and emergency management.

geological hazardsrisk investigationdevelopment characteristicsdisaster prevention and reductionGansu province

李松、刘晋文、窦晓东

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甘肃省地矿局第二地质矿产勘查院,兰州 730020

甘肃水文地质工程地质勘察院有限责任公司,兰州 730020

甘肃省地质环境监测院,兰州 730050

地质灾害 风险调查 发育特征 防灾减灾 甘肃省

中央财政自然灾害防治体系建设补助资金项目(2022)甘肃省科技厅重点研发项目甘肃省科技厅重点研发项目甘肃省地下水工程及地热资源重点实验室开放基金

财资环[2021]111号22YF11GA32022YF11GA321201909

2024

10.12404/j.issn.1671-1815.2304272

科学技术与工程
中国技术经济学会

科学技术与工程

CSTPCD北大核心
影响因子：0.338
ISSN：1671-1815
年,卷(期)：2024.24(11)
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