[1]曾欣,黄梦妮,胡毓灵,等.株洲市地质灾害特征与降雨量的关系[J].气象研究与应用,2024,45(01):83-89.[doi:10.19849/j.cnki.CN45-1356/P.2024.1.14]
　ZENG Xin,HUANG Mengni,HU Yuling,et al.The relationship between geological hazard characteristics and rainfall in Zhuzhou[J].Journal of Meteorological Research and Application,2024,45(01):83-89.[doi:10.19849/j.cnki.CN45-1356/P.2024.1.14]
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株洲市地质灾害特征与降雨量的关系()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第45卷
期数:
2024年01期
页码:
83-89
栏目:
研究论文
出版日期:
2024-05-07

文章信息/Info

Title:
The relationship between geological hazard characteristics and rainfall in Zhuzhou
作者:
曾欣;  黄梦妮;  胡毓灵;  邓新林;  谢倩雯
株洲市气象局, 湖南 株洲 412000
Author(s):
ZENG Xin;  HUANG Mengni;  HU Yuling;  DENG Xinlin;  XIE Qianwen
Zhuzhou Meteorological Bureau, Hunan Zhuzhou 412000, China
关键词:
极端强降雨; 地质灾害; 有效雨量; 预警阈值
Keywords:
extreme rainfall; geological hazard; effective rainfall; warning threshold
分类号:
P426.616
DOI:
10.19849/j.cnki.CN45-1356/P.2024.1.14
摘要:
利用2011-2021年株洲市地质灾害灾情调查资料,统计分析株洲市地质灾害特征,以2019年7月6-14日发生在湖南省株洲市的一次极端强降雨过程为例,分析株洲市地质灾害特征与降雨量的关系。结果表明:(1)株洲市地质灾害具有点多面广,规模小,突发性强等特征,地质灾害类型以滑坡为主,其次为崩塌。(2)日降雨量在[50,150) mm,最大小时雨强在[20,30) mm·h-1,72 h降雨量在[200,300) mm,有效降雨量在400 mm以上时,对地质灾害数量贡献率最大。(3)有效雨量作为地质灾害预警主要因子确定的地质灾害分级预警雨量阈值,经检验科学合理,可在应用中推广。
Abstract:
Based on the survey data of geological disasters in Zhuzhou City from 2011 to 2021, the characteristics of geological disasters in Zhuzhou City are analyzed statistically, and the relationship between the characteristics of geological disasters and rainfall in Zhuzhou City is analyzed by taking an example of an extreme rainfall process that occurred in Zhuzhou City, Hunan Province, from 6-14 July 2019 as an example. The results show that:(1) the geological disasters in Zhuzhou City are characterized by a wide range of points, small scale and strong sudden occurrence. The types of geological disasters are dominated bylandslides, followed by collapses; (2) when the daily rainfall is[50, 150) mm, the maximum rainfall intensity is[20, 30) mm·h-1, the rainfall in 72 h is[200, 300) mm, and the effective rainfall is above 400 mm, the contribution rate to the number of geological disasters is the largest; (3) effective rainfall as the main factor of geological disaster warning is determined as the rainfall threshold for geological hazard classification and warning, which has been tested scientifically and reasonably. It is worth popularizing in practical application.

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备注/Memo

备注/Memo:
收稿日期:2024-01-28。
基金项目:湖南省气象局研究型业务项目(20213)
作者简介:曾欣(1968-),女,高级工程师,从事应用气象与气象服务研究工作。E-mail:zengxin68@163.com
更新日期/Last Update: 1900-01-01