基于无人机航测的丹霞地貌区危岩结构面识别与三维裂隙网络模型--以重庆四面山景区为例  

Identification of dangerous rock structural planes and fracture network model in Danxia landform based on UAV aerial survey:A case study at simianshan scenic area of Chongqing

作　　者：熊开治 任志远 赵亚龙 杨忠平[3,4,5] 张黎健 XIONG Kaizhi;REN Zhiyuan;ZHAO Yalong;YANG Zhongping;ZHANG Lijian(208 Hydrogeology Engineering Geology Team,Chongqing Bureau of Geology and Mineral Exploration and Development,Chongqing 400700,China;Chongqing 208 Institute of Geological Environment Co.Ltd.,Chongqing 400700,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China;Key Laboratory of New Technology for Construction of Cities in Mountain Area,Ministry of Education,Chongqing University,Chongqing 400045,China;National Local Joint Engineering Research Center for the Prevention and Control of Environmental Geological Disasters in Reservoir Area(Chongqing),Chongqing 400045,China)

机构地区：[1]重庆市地质矿产勘查开发局208水文地质工程地质队,重庆400700 [2]重庆市二零八地质环境研究院有限公司,重庆400700 [3]重庆大学土木工程学院,重庆400045 [4]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [5]库区环境地质灾害防治国家地方联合工程研究中心(重庆),重庆400045

出　　处：《中国地质灾害与防治学报》2021年第5期62-69,共8页The Chinese Journal of Geological Hazard and Control

摘　　要：丹霞地貌地区是我国地质灾害高发区,裸露的近水平红色砂岩、砾岩陡崖是其最主要的地质特征。在地质构造与包括化学溶蚀、物理风化、重力和生物等内外动力作用下,陡崖岩体节理裂隙十分发育,危岩崩滑灾害表现出变形模式复杂、破坏力强的特点,并且由于坡体结构复杂,工程勘察难度大。为此,以四面山景区滴水岩变形危岩为例,介绍了一种基于无人机勘查技术的高陡破碎岩坡表生节理面的野外快速识别方法及高精度图像建模方法,在准确把握危岩体控制结构面的空间展布特征的基础上,建立了符合丹霞地貌高位破碎危岩的三维随机裂隙网络模型。以期为地区危岩稳定性评价与防治工作提供理论指导。Danxia landform is an area with high incidence of geological disasters in China.The exposed near-horizontal red sandstone and conglomerate steep cliffs are the most important identification elements.Under the internal and external dynamic action of geological structure,including chemical dissolution,physical weathering,gravity and biology,the rock mass of steep cliff is often extremely broken,and the disaster of dangerous rock collapse and slide is particularly prominent,the deformation mode is complex,the destructive power is strong,and because of the complex slope structure,the engineering investigation is difficult.So,with a deformation dangerous rock mountain scenic area as an example,this paper proposes a high-location and steep broken should based on the technology of unmanned aerial vehicle to the exploration of supergene field quickly identify methods for joint,and the accurate grasp the dangerous rock mass on the surface of the control structure on the basis of the spatial distribution characteristics of breakage of dangerous rock is established in Danxia landform high three-dimensional random fracture network model.It is expected to provide theoretical guidance for the stability evaluation and prevention of dangerous rock in the region.

关 键 词：丹霞地貌 优势结构面 随机裂隙 无人机航测 水平航测 

分 类 号：P694[天文地球—地质学]