摘要
地质灾害易发性是地质灾害风险评价的基础,是国土空间规划、地质灾害防治及工程建设的重要依据。以贵州省荔波县为例,采用信息量法对研究区地质灾害易发性进行评价。以遥感解译、现有灾害点、隐患点、历史灾害数据为评价基础数据,获取地质灾害信息量。以地形坡度、坡高、坡形、断层、地层、斜坡结构、水系距离7个固有地质环境影响因素为评价指标,开展易发性评价。研究结果显示:荔波县极高易发区4个,占31.65%;高易发区5个,占30.26%;中易发区4个,占29.11%;低易发区3个,占8.98%。经野外验证,符合度较高,评价结果可信。
The susceptibility of geological hazards is the foundation of geological hazard risk assessment,and an important basis for national spatial planning,geological hazard prevention and engineering construction.Taking Libo county in Guizhou province as an example,the vulnerability of geological disasters in the study area was evaluated by the information method.Based on remote sensing interpretation,current disaster points,hidden danger points,and historical disaster data as the basic evaluation data,the amount of geological disaster information is obtained.Using seven inherent geological environmental factors such as terrain slope,slope height,slope shape,faults,strata,slope structure,and water system distance as evaluation indicators,susceptibility evaluation is conducted.It is obtained that four extremely high prone areas in Libo county account for 31.65%,five highly prone areas account for 30.26%,four moderately prone areas account for 29.11%,and three low prone areas account for 8.98%.The field verification shows that the conformity is high,and the evaluation result is credible.
作者
王万金
钟响
WANG Wanjin;ZHONG Xiang(Geological Team,Guizhou Geological and Mineral Exploration and Development Bureau,Guiyang,Guizhou 550081)
出处
《中国煤炭地质》
2023年第7期59-67,共9页
Coal Geology of China
基金
贵州省地勘基金项目(黔自然资函[2021]244号)
贵州省水文地质志修编(MCHC-ZG20212206-1)。
关键词
地质灾害
易发性评价
信息量模型
geological hazards
evaluation of susceptibility
information quantity model
