摘要
基于上饶市地质灾害的详细调查资料,对研究区内地质灾害进行统计分析,着重分析其地质灾害类型、几何特征及其影响因素。结果表明,①区内中小型地质灾害发育,点密度达0.34处/km^(2),灾害类型主要有滑坡、崩塌、不稳定斜坡(包括滑坡隐患和崩塌隐患)、泥石流、地面塌陷等,其中以滑坡数量最多,占地质灾害总数的39.67%;②区内地质灾害体的形态特征不一,滑坡形态多为舌形、矩形和不规则形,泥石流根据流域形态主要表现为沟谷型和山坡型,地面塌陷剖面形态也是各异,有圆柱形和锅底形;③上饶市地质灾害是在内因和外因共同作用下形成的,坡度越陡,高程越大,地质构造活动越强烈,地层越风化破碎,地质灾害形成的内在条件越成熟,而降雨和人类工程活动是区内发生地质灾害的外在主导因素,其中降雨量大的月份,就是地质灾害高发的月份,而人工切坡的坡高和坡度则是影响地质灾害稳定性的重要因素。以上统计分析结果,对未来上饶地区地质灾害防治部署可以提供有利的依据。
Based on the detailed survey data of geological disasters,this paper summarizes and analyzes the characteristics of geological disasters in the study area,and focuses on the types,geometric characteristics and influencing factors of geological disasters.The results show that:①Small and medium-sized geological disasters are developed in study area,with a point density of 0.34 per km^(2).The disaster types mainly include landslide,collapse,unstable slope(including landslide hidden danger and collapse hidden danger),debris flow,ground collapse,etc.,among which the number of landslides is the largest,accounting for 39.67%of the total geological disasters;②The morphological characteristics of geological disaster bodies in the region are different.The landslide forms are mostly tongue-shaped,rectangular and irregular.The debris flow is mainly valley-shaped and hillside shaped according to the watershed form,and the surface collapse profiles are also different,including cylindrical and pot bottom shapes;③Geological disasters are formed under the combined action of internal and external factors in Shangrao City.The steeper the slope,the greater the elevation,the stronger the geological tectonic activity,the more weathered and broken the stratum,and the more mature the internal conditions for the formation of geological disasters.Rainfall and human engineering activities are the external dominant factors for the occurrence of geological disasters in the region.The month with large rainfall is the month with high incidence of geological disasters,and the heights and slopes of artificially cut slopes are important factors affecting the stability of geological disasters.The results of the above statistical analysis can provide a favorable basis for the future deployment of geological disaster prevention and control in Shangrao area.
作者
毕晨洁
吴珍云
石祖峰
刘德东
王莉
黄鑫
祝民强
Bi Chenjie;Wu Zhenyun;Shi Zufeng;Liu Dedong;Wang Li;Huang Xin;Zhu Minqiang(School of Earth Sciences,East China University of Technology,Nanchang,Jiangxi 330013;Engineering Research Center for Seismic Disaster Prevention and Engineering Geological Disaster Detection of Jiangxi Province (ECUT),Nanchang,Jiangxi 330013;Eighth Geological Team of Jiangxi Geological Bureau,Shangrao,Jiangxi 334000)
出处
《资源环境与工程》
2022年第2期163-174,共12页
Resources Environment & Engineering
基金
国家自然科学基金项目(41602208,42072320)
东华理工大学博士启动基金项目(DHBK2019053)
江西省防震减灾与工程地质灾害探测工程研究中心开放基金资助项目(SDGD202108)
东华理工大学研究生创新项目(DHYC-202037)联合资助。
关键词
地质灾害
灾害特征
影响因素
上饶市
geological disasters
disaster characteristics
influence factor
Shangrao city
作者简介
第一作者:毕晨洁(1996—),女,在读硕士研究生,地质工程专业,研究方向为地质灾害研究,E-mail:286117010@qq.com;通信作者:吴珍云(1986—),男,讲师,博士,硕士生导师,地球探测与信息技术专业,从事地质构造及地质灾害研究,E-mail:zhenyun_wu@ecut.edu.cn。
