Analysis of physical exposures under serious flood disasters in the wide floodplain of the lower Yellow River
ZHANG Xiangping1,2,3, LI Junhua1,2, Wang Yuanjian1,2, JIANG Enhui1,2
1. Yellow River Institute of Hydraulic Research, Zhengzhou 450003; 2. Yellow River sediment key laboratory of ministry of water resources, Zhengzhou 450003
Abstract:The analysis of the physical exposures to the serious flood disaster scenarios in the wide floodplain of the lower Yellow River provides scientific basis for the decision-making of flood control and disaster reduction in the lower Yellow River Basin. Based on scenario analysis method and ArcGIS spatial analysis technology,the flood disaster database of the wide floodplain in the lower reaches of the Yellow River is constructed. Taking historical serious flood disasters of "1958.7" and "1977.8" as scenarios,the physical exposures of population,GDP,grain yield and fixed assets in the area in 2010 under different application modes of the wide floodplain are analyzed,and the physical exposures of the disaster-bearing bodies in the area are evaluated. Results indicate:①According to ArcGIS spatial analysis technology,the submerged area of the "1958.7" event,under the current plan,is 1 272.40 km2. The submerged area of the wide floodplain of the plan with levees and without sluices is much smaller than that of the current plan. The submerged area is almost identical under 8 000 m3/s and 10 000 m3/s discharge under the plan with levees and sluices. In the flood scenario of "1977.8" event,there was almost no flooding in the beach area with levees and without sluices,and the submerged area with levees and sluices was smaller than that in the flood scenario of "1958.7". ②If the serious flood disaster in the floodplain of the lower Yellow River occurred in 2010,under the "1958.7" flood scenario,the population exposure with the current plan is 1.6645 million,and the GDP exposure is 10.026 billion yuan. Under the "1977.8" flood scenario,the population exposure with the current plan is 1.3367 million,and the GDP exposure is 6.382 billion. According to different plans under two flood scenarios,the exposure of the current plan is greater than that with levees and sluices plan,and then the zoning plan. The exposures without levees and sluices plan are the smallest. This shows that the effect with levees and without sluice is better than that with levees and sluices plan,zoning plan and current plan.
张向萍, 李军华, 王远见, 江恩慧. 黄河下游宽滩区重大洪涝灾害情景下的物理暴露量分析[J]. 中国防汛抗旱, 2019, 29(4): 22-28.
ZHANG Xiangping, LI Junhua, Wang Yuanjian, JIANG Enhui. Analysis of physical exposures under serious flood disasters in the wide floodplain of the lower Yellow River. journal1, 2019, 29(4): 22-28.
[1] 徐宗学,刘琳,杨晓静.极端气候事件与旱涝灾害研究回顾与展望[J].中国防汛抗旱,2017,27(1):66-74. [2] Mileti D S.Natural hazards and disasters-disasters by a design a reassessment of natural hazards in the United States[M].Washington D C:Joseph Henry Press,1999. [3] 赵思健,黄崇福.情景驱动的区域自然灾害风险分析[J].自然灾害学报,2012,21(1):9-17. [4] Evans E,Hall J,Penning-Rowsell E,et al.Future flood risk management in the UK[J].Proceedings of the ICE-Water Management,2006,159(1):53-61. [5] Feyen L,Dankers R,Bodis K,et al.Fluvial flood risk in Europe in present and future climates[J].Climatic change,2012,112(1):47-62. [6] 王艳艳,梅清,程晓陶.流域洪水风险情景分析技术简介及其应用[J].水利水电科技进展,2009,29(2):56-65. [7] 王义成,丁志雄.基于情景分析技术的太湖流域洪水风险动因与响应分析研究初探[J].中国水利水电科学研究院学报,2009,7(1):7-14. [8] 尹占娥,许世远,殷杰,等.基于小尺度的城市暴雨内涝灾害情景模拟与风险评估[J].地理学报,2010,65(5):553-562. [9] 石勇,许世远,石纯,等.洪水灾害脆弱性研究进展[J].地理科学进展,2009,28(1):553-562. [10] 黄红铸,崔玉娟,叶瑜,等.江浙沪地区历史重大洪涝灾害情景下的人口和GDP物理暴露量分析[J].长江流域资源与环境,2013,22(6):801-807. [11] 程先富,戴梦琴,郝丹丹,等.基于情景分析的区域洪涝灾害风险评价——以巢湖流域为例[J].长江流域资源与环境,2015,24(8):1418-1424. [12] 黄河水利科学研究院.黄河下游宽滩区滞洪沉沙功能及滩区减灾技术研究总报告[R].2015.