长江科学院院报 ›› 2018, Vol. 35 ›› Issue (6): 42-46.DOI: 10.11988/ckyyb.20161341

• 防洪减灾 • 上一篇    下一篇

山洪灾害预警雨量指标讨论及在无资料地区的确定

秦毅1,陈星星2,曾杉1   

  1. 1.西安理工大学 水利水电学院,西安 710048;
    2.新疆水利水电科学研究院,乌鲁木齐 830049
  • 收稿日期:2016-12-22 修回日期:2017-04-19 出版日期:2018-06-01 发布日期:2018-06-16
  • 作者简介:秦毅(1959-),女,江苏常州人,教授,博士,主要从事水文水资源与河流泥沙工作。E-mail:13571991500@126.com
  • 基金资助:
    国家自然科学基金面上项目(51679184)

Rainfall Threshold for Flash Flood Warning: Redefinition and Calculation for Ungauged Areas

QIN Yi1, CHEN Xing-xing2, ZENG Shan1   

  1. 1.Institute of Water Resources and Hydro-electric Engineering,Xi’an University of Technology, Xi’an 710048, China;
    2.Xinjiang Institute of Water Resources and Hydropower Research, Urumqi 830049, China
  • Received:2016-12-22 Revised:2017-04-19 Online:2018-06-01 Published:2018-06-16

摘要: 为应对当前山洪灾害预警雨量指标定义多、实际应用时产生困惑的现象,分析梳理了现有定义,重新将预警雨量定义为规划预警雨量和应急预警雨量2类,并从产汇流机理出发,提出简单可行的无资料地区应急预警雨量指标的计算方法。计算结果比较发现,2类预警雨量指标的变化规律不同。在制定山洪灾害防灾措施时,需要根据服务目标(预警还是工程设计),确定应该采用的预警雨量指标类型,以实现山洪灾害的合理防控。

关键词: 山洪灾害, 预警时段, 规划预警雨量, 应急预警雨量, 无资料地区

Abstract: Confusion arises in practical application due to multiple definitions of rainfall threshold for flash flood warning. In view of this, we analyzed and summarized the existing definitions, and redefined the rainfall threshold for early warning into two types planned rainfall threshold and emergency rainfall threshold. In line with the mechanism of flow yield and confluence, we proposed a simple and feasible method of calculating the emergency rainfall threshold for ungauged areas. Comparison of calculation result between the two types indicates that the variations of planned rainfall threshold and emergency rainfall threshold are featured with different rules. In forming prevention and control measures for flash flood, we should make clear the objectives (for early warning or for engineering design) in determining the indicator type to realize a reasonable prevention and control.

Key words: flash flood disaster, early warning period, planned rainfall threshold for early warning, emergency rainfall threshold, ungauged area

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