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Calculation of Early Warning Index of Mountain Torrent Disaster in Yushe County

  • Xuyang Yang
  • Dandan Yan
  • Lingling Sun
Conference paper
Part of the Environmental Earth Sciences book series (EESCI)

Abstract

According to the investigation of the disaster of mountain torrents in Yushe County, the disaster water level of the flood disaster prevention objective is determined with regard to the disaster situation of the village and the historical flood investigation of the small watershed. According to the “Shanxi Hydrological Calculation Manual” analysis of a design storm, combined with the actual situation in Shanxi, analysis determined the warning period and soil moisture content. Based on the hypothesis of rainstorm and flood of the same frequency, the same frequency anti-push method is used to reverse the disaster flow from the designed storm flood. The designed rainfall is the early warning rainfall in the early warning period, that is, the small rainfall warning index (immediate transfer of indicators). Through the analysis and calculation, the rainfall warning index of 0.5, 1 and 1.5 h of Yuhong County flood disaster prevention objective is determined, and the rationality of an early warning index is analyzed. The results show that the early warning index of the mountain flood disaster in Yuqi County is reasonable and reliable.

Keywords

Mountain torrent disaster Critical rainfall Rainfall warning index Yushe County 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Water Conservancy and HydroelectricHebei University of EngineeringHandanChina

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