【摘要】 2013~2015年,全国山洪灾害调查评价工作相继在2 058个县展开。广西浦北县的调查评价工作开展于2014年,通过此项工作,调查了浦北县山洪灾害防治区的基本资料、历史山洪灾害分布、山洪灾害防治现状及涉水工程分布,划定了山洪灾害危险区,分析了各重要沿河村落的现状防洪能力,初步提出了山洪灾害预警指标。分析浦北县山洪灾害调查评价成果,认为山洪灾害调查评价成果有助于查清县域山洪灾害重点防治区的分布,明确各重点防治区面临的山洪风险因素,支撑山洪灾害防治非工程措施完善,并为山洪灾害预警提供初值,也为山洪灾害防御提供有效支撑。同事仍存在一些问题亟待深入研究,如山洪灾害预警的确定方法、预警指标的可靠性问题等等。而我国目前在建的山洪预警系统均为静态指标系统,国际上先进的预警系统均为动态预警系统且仍在不断完善中,因此,我国山洪灾害预警系统建设,尚需加大研究和投入。更多还原

【Abstract】 National flash flood survey and estimation was carried out in 2058 counties from 2013 to 2015. This task investigated the basic information of flash flood threatened areas, the distribution of historical flash flood disasters,the current measures applied to flash flood prevention and the distribution of wading engineering. Furthermore, the task classified the flash flood associated dangerous zones, analyzed the present situation of flash flood control capacity of the important villages along rivers and initially proposed flash flood warning indexes. Taking Pubei County as an example, this paper discusses the support for flash flood disaster prevention with results of flash flood survey and estimation. The preliminary analysis shows that the results of flash flood survey and estimation help identify the main flash flood control areas, recognize key flash flood risks faced by these areas, improve the nonengineering measures for flash flood disaster prevention and provide the initial indexes for flash flood warning.Although the results of flash flood investigation and estimation can effectively support flash flood disaster prevention, there are still some problems remaining to be studied, such as the flash flood index determination methods, the reliability of flash flood early warning indexes and so on. The flood flash warning systems under construction in China at present are still static systems, while international advanced early flash flood warning systems are all dynamically calculated and continue to improve. Therefore, the construction of flash flood warning systems still needs more researches and investment.更多还原