摘要
本文依托贵州省重点地区地质灾害详细调查及风险评价示范项目,以盘州市盘关镇重点区为例,提出了一套从斜坡单元划分、单元地质灾害易发指数计算、易发指数阈值计算,到单元地质灾害危险源评判,编制研究区地质灾害危险源分布图等地质灾害风险识别新方法。在研究区地质灾害危险源分布图的基础上,可预测不同暴雨频率地质灾害危险源危险区范围,编制不同暴雨频率危险源危险区范围分布图,根据降雨强度与暴雨频率的关系,可以使重点区地质灾害风险气象预报更加科学合理。
Based on the Detailed Investigation of Geological Hazards and the Demonstration Project of Risk Assessment in key areas of Guizhou province.Taking the key area of Panguan town in Panzhou City as an example,this paper puts forward an innovative method for distinguishing geological hazard risk,which includes dividing slope units,calculating geological hazard proneness and its threshold value index,estimating the risk source of per geological hazard,compiling hazard distribution map of geological hazard in the study area.Relying on distribution map of the geological hazard sources and combining with the frequency of different rainstorms,the range of hazardous sources of geological disasters can be predicted and the distribution map of dangerous areas and sources can be compiled.and the meteorological forecast of geological hazard risk in key areas can be more scientific and reasonable according to the relationship between rainfall intensity and rainstorm frequency.
作者
冷洋洋
魏伦武
赖琪毅
LENG Yang-yang;WEI Lun-Wu;LAI Qi-Yi(Guizhou Institude of Geo-environment Monitoring,Guiyang 550081,Guizhou,China;Chengdu Center of Geological Survey,China Geological Survey,Chengdu 610081,Sichuan,China;Chengdu University of Technology,Chengdu 610059,Sichuan,China)
出处
《贵州地质》
2021年第3期326-333,350,共9页
Guizhou Geology
基金
贵州省地质灾害综合防治体系建设(2018年度)课题-乌蒙山区地质灾害与地质环境承载力协调系统研究,黔财建[2018]426号。
关键词
贵州山区
斜坡单元
地质灾害
危险源
识别方法
Mountainous areas
Slope units
Geological hazard
Identification method
