基于子流域单元的抚顺市泥石流易发性及危险性评价
Debris Flow Susceptibility and Hazard Assessment in Fushun City Based on Hydrological Response Units
刘善军 1刘诗瑶 1魏恋欢 1吕东霖2
作者信息
- 1. 东北大学 资源与土木工程学院,辽宁 沈阳 110819
- 2. 辽宁省地矿集团能源地质有限责任公司,辽宁 沈阳 110062
- 折叠
摘要
针对泥石流易发性及危险性评价中存在的评价体系模糊、忽略降雨等诱发因素的问题,以抚顺市作为研究区,在分析泥石流灾害发育及分布规律的基础上,利用层次分析法,以子流域单元作为评价单元,开展泥石流灾害易发性及危险性评价.结合已有泥石流灾害点进行了精度评定.结果显示,抚顺市已有的42处泥石流灾害点中,36处位于本次评价的泥石流高易发和极高易发区(占比85.71%),有33处位于本次评价的泥石流高危险和极高危险区(占比78.57%).表明本次易发性及危险性评价结果比较可靠,与抚顺市的泥石流灾害发育情况相符合.
Abstract
Targeting at the problems of fuzzy evaluation system and neglect of triggering factors such as rainfall in the susceptibility and hazard assessment of debris flows,a study was conducted in the Fushun City based on analysis of the development and distribution patterns of debris flow disasters,the analytic hierarchy process method was utilized to assess the susceptibility and disasters of debris flow,using hydrological response units as evaluation units.The assessment accuracy is evaluated by incorporating existing debris flow disaster points.The results show that among the 42 existing debris flow disaster points,36 are located in the high and extremely high susceptibility areas(accounting for 85.71%),and 33 are located in the high and extremely high hazard areas(accounting for 78.57%).This indicates that the susceptibility and hazard assessment results are reliable and consistent with the current development situation of debris flow disasters in Fushun City.
关键词
泥石流/子流域单元/层次分析法/易发性评价/危险性评价Key words
debris flow/hydrological response unit/analytic hierarchy process/susceptibility assessment/hazard assessment引用本文复制引用
基金项目
国家自然科学基金资助项目(42071453)
出版年
2024
NETL
NSTL
万方数据