突发性泥沙灾害危险性快速区划方法  

A New Approach for Rapid Assessment of Abrupt Sediment Hazards

作　　者：倪晋仁[1] 刘仁志[1] 

机构地区：[1]北京大学环境工程系水沙科学教育部重点实验室,北京100871

出　　处：《应用基础与工程科学学报》2004年第4期333-345,共13页Journal of Basic Science and Engineering

基　　金：国家自然科学基金委员会与水利部联合资助重大基金项目(批准号59890200)

摘　　要：突发性泥沙灾害危险性区划是防灾减灾工作的重要依据.针对传统区划方法存在周期长、成本高、地域性强、对数据完备性要求高等问题,本文基于快速评估思想提出了突发性泥沙灾害危险性的快速区划方法.该方法在确定区划原则、形式、单元、指标的基础上,通过参照系建立、参照组匹配、邻域估测及邻域合并等步骤进行区域泥沙灾害危险度的判定和区划.本文提出的方法具有快速、高效、实用的特点,且在一定程度上能够弥补因资料不足而带来的区划困难,能够更好地服务于防灾减灾工作.Sediment disasters are of great significance to human security. For effective prevention and control of the disasters, rapid assessment approaches are of primary importance. Considering that the existing approaches for sediment hazard assessment are less effective and are often restricted to local areas, a new approach for abrupt sediment hazard assessment is proposed. Through the key steps of the classification of reference groups, identification of test site matching groups and evaluation of blank test sites, the present approach are rapid, efficient and applicable to large regions, which could greatly improve the effectiveness of preventive measure and disaster mitigation procedures.

关 键 词：危险性 突发性 性要求 快速评估 危险度 困难 估测 区划方法 防灾减灾工作 周期 

分 类 号：P694[天文地球—地质学] P902