村镇洪灾时空间起源分析与实证研究--以吉林省永吉县口前镇为例  被引量:2

Spatial Origin Analysis and Empirical Study of Flood in Villages and Towns--Taking Kou Qian Town,Yongji County,Jilin Province as an Example

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作  者:陈鹏[1] 陈其沛 张继权[2] CHEN Peng;CHEN Qipei;ZHANG Jiquan(College of Tourism and Geography Science,Jilin Normal University,Siping 136000,China;School of Environment,Northeast Normal University,Changchun 130017,China)

机构地区:[1]吉林师范大学旅游与地理科学学院,吉林四平136000 [2]东北师范大学环境学院,吉林长春130017

出  处:《灾害学》2021年第4期113-118,共6页Journal of Catastrophology

基  金:吉林省科技厅重点研发项目(20200403074SF);吉林省教育厅项目(JJKH20200428KJ)。

摘  要:我国每年洪灾频发,造成的损失非常严重,准确掌握洪灾的时空间信息对有效的防灾减灾至关重要。利用洪水数值模型与洪灾时空间起源模型,从时间与空间角度厘清了洪灾的源头、停留时间、流经路径和组成成分,并以2010年吉林省永吉县口前镇“7.28”洪灾为例开展实证研究。研究结果表明,时间起源上口前镇洪灾发生是5—7月份的降雨、径流量及朝阳水库库容的累积过程,其中5月份的洪水累积量占总体洪水流量的15%左右,6月份占30%左右,7月份占55%左右;空间起源上口前镇洪灾远离河道区域是由内水构成,而河道沿岸区域由外水构成,其中内水洪水主要由降雨与径流流量水构成,外水洪水由降雨、径流流量水及水库库容水构成。Floods occur frequently in China every year,causing serious losses.Accurate mastery of time-space information of floods is of great importance for effective disaster prevention and mitigation.The flood source,residence time,flow path and composition were clarified from the perspective of time and space by using the flood numerical model and the flood spatial origin model,and the empirical study was carried out by taking the“7.28”flood in Kouqian Town,Yongji County,Jilin Province in 2010 as an example.The results show that the time origin of the flood in Shangkouqian town is the accumulation process of rainfall,runoff and the storage capacity of Chaoyang reservoir from May to July.The flood accumulation in May accounts for about 15%of the total flood discharge,about 30%in June,and about 55%in July.The spatial origin of the flood in Shangkouqian Town far away from the river is composed of internal water,while the coastal area of the river is composed of external water.The internal water flood is mainly composed of rainfall and runoff flow,while the external water flood is composed of rainfall,runoff flow and reservoir capacity.This study attempts to analyze the origin of flood in time and space from a new perspective,and the research results can not only provide new research ideas for flood-related research,but also provide a reference for accurate disaster prevention and mitigation.

关 键 词:洪灾 T-SAS模型 洪水模型 时空间起源 永吉县口前镇 

分 类 号:X43[环境科学与工程—灾害防治] X915.5

 

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