基于无人机影像建模的危岩体信息提取与风险评估研究

Research on information extraction and risk assessment of dangerous rock mass based on UAV image modeling

危岩体的识别与风险评估在地质调查和灾害预防工作中占据着非常重要的地位,而传统的研究方法,不仅工作量大、效率低下,且存在一定的安全隐患。本文结合无人机技术,提出一种基于三维模型的危岩体结构面参数量测、张开度计算的方法,以此为基础提取危岩体的各项参数并开展全面分析,对其危险性进行评估分级,从而为地质灾害部门提供数据支持。经实验证明,该方法切实可行,能够快速、准确地提取出危岩体的关键信息,且均方根误差控制在0.09m以内,这无疑为危岩体的快速准确识别提供了一种高效可靠的手段,具备一定的工程借鉴意义。

The identification and risk assessment of dangerous rock mass plays a very important role in geological survey and disaster prevention.The traditional research methods not only have heavy workload and low efficiency,but also have some potential safety problems.Using UAV technology,this paper puts forward the basic principles and methods of structural plane parameter measurement and opening calculation of dangerous rock body based on three-dimensional model,extracts various parameters of dangerous rock body,carries out comprehensive analysis,evaluates and grades its risk,so as to provide data support for geological disaster department.Experiments show that this method is feasible,which can quickly and accurately extract the key information of dangerous rock mass,and the root mean square error is controlled within O.09m,which undoubtedly provides an efficient and reliable means for the rapid and accurate identification of dangerous rock mass,and has certain engineering reference significance.