【摘要】 山洪灾害监测预警系统建设是我国当前山洪灾害防治非工程措施建设的重要的内容之一。我国的山洪灾害监测预警系统主要是依据实测雨量与临界雨量的对比而进行预警的。在临界雨量的分析和应用过程中,对临界雨量的认识和理解,还存在较大的分歧,从而导致临界雨量的分析计算及其应用尚存在一些误区。本文根据山溪洪水的特性和致灾机制,对山溪洪水临界雨量的基本概念进行剖析,并对山溪洪水临界雨量的分析计算和应用进行研究。更多还原

【Abstract】 Early Warning System(EWS) is an important measure for flash floods disaster control in moutainous areas. In China early warning for flash flood in mountainous areas is usually based on the criti-cal rainfall. However,there is some misunderstanding on the critical rainfall during calculation and applica-tion of it in EWS,which leads to more uncertainty. Therefore,it is necessary to describe the basic con-cept of the critical rainfall. Based on that,a method to calculate the critical rainfall and how to use it in EWS is proposed.更多还原