基于小型无人机的高位危岩快速调查与稳定性评价

危岩体多孕育于高陡岩质斜坡之上,具有明显的隐蔽性和突发性,其早期的快速识别与稳定性评价一直是地质灾害防治工作中重要的技术难题之一.以重庆万州狮子头为例,利用小型无人机合理规划航线获取高清影像,生成二三维模型.通过遥感信息提取技术与地质灾害分析相结合,为危岩体稳定性研究提供基础数据.运用图像识别技术识别危岩体结构面,并利用前期提取的坐标等基础数据计算出其产状.最后采用赤平投影的方法分析了典型危岩单体的稳定性.研究成果为高位危岩体的非接触式测量、精细地质信息获取及稳定性快速评价提供一种新的思路.

Application of Micro Unmanned Aerial Vehicle in a Quick Investigation and Stability Assessment of High Dangerous Rock Mass

The hiddenness and unexpectedness of dangerous rock mass in high-steep rock slopes makes its quick identification and stability assessment in the early stage one of the major technical problems in geological disaster management. Taking Shizitou in Wanzhou, Chongqing as an example, micro unmanned aerial vehicles (UAVs) were used to reasonably plan the route to obtain high-definition (HD) images and generate two- and three-dimensional models. The combination of remote sensing information extraction technology and geological disaster analysis provides basic data for the study of dangerous rock mass stability. Use of image recognition technology was applied to identify the structural surface of dangerous rock mass, and basic data such as the coordinates extracted earlier was used to calculate its occurrence. Finally, the stability of typical dangerous rock mass was analyzed by erythroid projection. The research results provide a new idea for the non-contact measurement, acquisition of fine geological information and quick stability assessment of high dangerous rock mass.