To explore the causes of the “2020·6·12” flash flood disaster in Zheng'an County, Guizhou Province, data was collected and site surveys were conducted. The disaster, flood and rain conditions were analyzed. The dynamic process of flood inundation was simulated and verified using two-dimensional flow model software based on two-dimensional shallow water equations. The causes of the flash flood disaster were obtained: 1) The special topography provided basic conditions for the disaster; 2) Short-duration heavy rainfall superimposed on high previous cumulative rainfall was the key factor in inducing disaster; 3) The contradiction between the inadequate flood control capacity of the river course and excessive peak discharge made disasters inevitable; 4) Many non-residents and floating population, women and children with poor self-rescue ability, and people with low risk-avoidance awareness greatly increased disaster risks. On this basis, some measures to prevent and control flash flood disasters were proposed such as scientific top-level design, improvement of mass monitoring system and prevention of flash flood disaster, and detailed dynamic management of flood control and disaster reduction.
Key words
flash flood disaster /
inundated by floods /
analysis of causes /
disaster enlightenment /
Zheng'an County, Guizhou Province
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 赵 刚, 庞 博, 徐宗学, 等. 中国山洪灾害危险性评价. 水利学报, 2016, 47(9): 1133-1142, 1152.
[2] 裘 峰, 周 亮, 王丽萍. 贵州省山洪灾害防治工作十周年回顾. 中国防汛抗旱, 2020, 30(增刊1): 130-133.
[3] MARCHI L, BORGA M, PRECISO E, et al. Characterisation of Selected Extreme Flash Floods in Europe and Implications for Flood Risk Management. Journal of Hydrology, 2010, 394(1/2): 118-133.
[4] 王协康, 刘兴年, 周家文. 泥沙补给突变下的山洪灾害研究构想和成果展望. 工程科学与技术, 2019, 51(4): 1-10.
[5] 孙 桐, 杨 坡, 许泽星, 等. 中都河流域“8·16”山洪致灾机理分析. 工程科学与技术, 2021, 53(1): 132-138.
[6] 贵州正安县碧峰镇“6.12”特大暴雨灾害致13人死亡.(2020-06-13). http://m.news.cctv.com/ 2020/06/13/ARTIIFizJ4G6VG4HLgmmV11j200613.shtml.
[7] 全国山洪灾害防治项目组. 山洪灾害调查技术要求. 北京:全国山洪灾害防治项目组,2014.
[8] 王家祁,张建云. 中国暴雨统计参数图集. 北京: 中国水利水电出版社, 2006.
[9] 王国安. 可能最大暴雨和洪水计算原理与方法. 郑州: 黄河水利出版社, 1999.
[10] 遵义市气象局,遵义市水文水资源局. 6月12日凌晨正安碧峰极端强降水分析评估报告. 遵义:遵义市气象局,遵义市水文水资源局,2020.
[11] 朱晓原, 张留柱, 姚永熙. 水文测验实用手册. 北京: 中国水利水电出版社, 2013.
[12] 罗清元, 王婉婉, 赵彦增, 等. 小流域山洪灾害分析评价中产汇流计算方法及应用. 水电能源科学, 2018, 36(12): 59-62.
[13] 丁志雄, 李纪人, 李 琳, 等. 对洪水淹没分析的若干思考//中国水利学会2003学术年会论文集. 2003: 398-404.
[14] 周 山. 基于非结构网格的二维洪水演进模型构建及应用.北京: 清华大学, 2020.
[15] 方红卫, 何国建, 郑邦民. 水沙输移数学模型. 北京: 科学出版社, 2015.
[16] 高煜中, 邢俊江, 王春丽, 等. 暴雨山洪灾害成因及预报方法. 自然灾害学报, 2006, 15(4): 65-70.
[17] 芮孝芳. 水文学原理. 北京: 中国水利水电出版社, 2004.
[18] 黄国如,陈真莲. 基于前期有效雨量的山洪灾害临界雨量探讨. 自然灾害学报,2014,23(5):192-197.
[19] 遵义水利水电勘测设计研究院.贵州省正安县三江河碧峰集镇、安场集镇河段治理工程初步设计报告.遵义:遵义水利水电勘测设计研究院,2013.
PDF(2521 KB)
