Based on the meteorological and geographic information data, with statistical
method and the FloodArea model, the extreme daily rainfall of the 100-year
return period in Hunhe River basin was established, through the simulation of
rainstorm and flood disaster, characteristics of flood depth in warning spot
Cangshi village in the upstream of the river were analysed, and possible effect
on community economy was also evaluated. Results showed that, the precipitation
of 100-year return period occurred, the flood depth has been below 1.0
meter in the most areas of Hunhe River basin, the depth was between 1.0 meter
and 2.5 meters in the part areas of Hunhe River basin, and the flood depth
has been exceed 2.5 meters in a small part of Hunhe River basin. After the beginning
of precipitation, the flood was concentrated in the upper reaches of
the river. With the accumulation of precipitation and the passage of time, the
flood pools into midstream and downstream. Precipitation lasted for 24
hours, the warning spot was flooded in the beginning of precipitation. With
the accumulation of precipitation, water level of the river increases gradually.
The depth of warning spot has passed 1.0 meter at the 07 time of the whole
process, and the maximum value of flood depth at warning spot was 1.083
meters that occurred at the 19 time. The flood depth of warning spot decreased
gradually after the precipitation stopping, and the depth has been below
0.2 meters, the flood of upstream ended. Up to the end of the upstream
flood process, in the whole river, about one million five hundred and sixty
thousand people were affected by flooding, and thirty-eight billion and two
hundred million RMB of gross domestic product were lost, in addition, dry
land and paddy field were affected greatly, but woodland and grassland were
less affected.
References
[1]
Jing, Z.S., Gu, H., Zheng, L.D., et al. (2014) Encyclopedia of Rivers and Lakes in China Section of Heilongjiang River and Liaohe River. China Water Power Press, Beijing, 268-271.
[2]
Lan, H., Yang, L. and Qiu, J.W., et al. (1997) Numerical Simulation for Flood Control Standard of Southern Embankment of Hunhe River in Shenyang City. Journal of Natural Disasters, 6, 95-101.
[3]
Liu, W., He, J.S. and Chen, Y. (2016) Variation Characteristics and Synchronicity Analysis of the Precipitation and Runoff in Hunhe River Basin. Research of Soil and Water Conservation, 23, 150-154.
[4]
Chen, H.Y., Yang, S.F. and Xu, H.E., et al. (2013) GIS-Based High-Resolution Early Warning Index of Rainstorm Disaster. Journal of Natural Disasters, 22, 136-143.
[5]
Shen, C., Sun, Y. and Yin, D.P., et al. (2015) Characteristic Analysis of Rainstorm-Induced Flood Disaster in Jiangsu Province. Journal of Natural Disasters, 24, 203-212.
[6]
Rong, Y.S., Wang, W. and Wang, P., et al. (2012) Analysis of Characteristics of Extreme Rainfall and Estimate of Rainfall during Return Periods in Huaihe Basin. Journal of Hohai University (Natural Sciences), 40, 1-8.
[7]
Lu, Y.Y., Xie, W.S. and Tian, H. (2016) Analysis of Critical Flood Causing Rainfalls in Medium and Small Rivers Based on Hydrological Model and Statistical Method. Journal of Natural Disasters, 25, 38-47.
[8]
Zhang, Z.T., Gao, C. and Liu, Q., et al. (2014) Risk Assessment on Storm Flood Disasters of different Return Periods in Huaihe River Basin. Geographical, 33, 1361-1372.
[9]
Zhang, L., Wang, W. and Wen, M.Z., et al. (2015) Research on Refined Early-Warning Method of Mountain Flood Disaster Based on Floodarea. Journal of Fudan University (Natural Science), 54, 282-287.
[10]
Wen, M.Z., Lin, X. and You, L.J., et al. (2013) Risk Rainfall Assessment Methods of Flash Floods Disaster. Meteorological Monthly, 39, 1325-1330.
[11]
Xie, W.S., Tian, H. and Lu, Y.Y. (2015) Risk Evaluation of Rainstorm and Flood Disasters in Datong River Basin Based on the FloodArea Model. Torrential Rain and Disasters, 34, 384-387.
[12]
Du, H., Xia, J. and Zeng, S.D., et al. (2012) Temporal and Spatial Variations and Statistical Models of Extreme Runoff in Huaihe River Basin. Acta Geographica Sinica, 67, 398-409.
[13]
Lu, M., Gao, C. and Su, B.D., et al. (2015) Spatial Distribution and Probabilistic Characteristics of Extreme Precipitation in the Huaihe River Basin. Journal of Natural Disasters, 24, 160-168.
[14]
Su, B.D., Jiang, T. and Dong, W.J. (2008) Probabilistic Characteristics of Precipitation Extremes over the Yangtze River Basin. Scientia Meteorologica Sinica, 28, 625-629.
[15]
Lu, M., Gao, C. and Yao, M.T., et al. (2016) Probability Distribution Model and Its Application on Extreme Precipitation in Huaihe River Basin. Bulletin of Soil and Water Conservation, 36, 197-203.
[16]
Liu, M.Y., Wang, Y., Zheng, S., et al. (2015) Critical Precipitation Determination for a “0816” Torrent Event in Qingyuan, Liaoning Province. Journal of Meteorology and Environment, 31, 25-30.
[17]
Su, B.D., Jiang, T., Guo, Y.Y., et al. (2005) GIS Raster Data-Based Dynamic Flood Risk Simulation and Its Application. Journal of Hohai University (Natural Sciences), 33, 370-374.
[18]
Liu, J.F., Jiang, W.G., Zhan, W.F., et al. (2010) Processes of SCS Model for Hydrological Simulation: A Review. Research of Soil and Water Conservation, 17, 120-124.
[19]
Peng, D.Z. and You, J.J. (2006) Application of Modified SCS Model into Runoff Simulation. Journal of Water Resources and Water Engineering, 17, 20-24.
[20]
Zhang, H.J. and Hikaru, K. (1995) A Study on Effect of Forest Land Condition upon Roughness Coefficient in the Waet of Shanxi Province. Bulletin of Soil and Water Conservation, 15, 10-21.
[21]
Zhang, H.J., Hikaru, K., Xie, M.S., et al. (1994) Study on Roughness Coefficient under the Conditions of Several Land Utilization in the West of Shanxi Province. Journal of Beijing Forestry University, 16, 86-91.
