基于无人机技术获取岩体结构面信息方法研究

Study on method of obtaining rock mass discontinuity information based on UAV technology

岩质边坡的稳定性主要取决于坡体内部结构面的发育特征和性质。获取边坡岩体内部结构面的几何信息,特别是产状数据,对于研究结构面的组合规律及进一步评价边坡的稳定性具有非常重要的意义。传统的结构面采集方法工作效率极低,且对于高陡岩质边坡,技术人员无法到达。无人机摄影测量技术具有非接触、高效率的突出优势,能够有效弥补传统方法的不足。以长春市某高陡岩质边坡为研究对象,使用无人机进行航空影像数据采集,建立边坡的三维实景模型,并提取结构面产状数据。经与现场实测代表性结构面产状数据对比可知,新方法的精度较高。该方法为快速准确评价高陡岩质边坡稳定性提供了依据。

The rock slope stability mainly depends on the development characteristics and properties of internal discont-inuities.It is very important to obtain internal discontinuities geometry information in slope rock mass,especially the occurrence data,for studying discontinuities combination law and further evaluating the slope stability.The traditional discontinuities acquisition method is very inefficient,and for high and steep rock slope,technical personnel cannot reach.UAV photogrammetry technology has the outstanding advantages of non-contact and high efficiency,which can effectively make up for the shortcomings of traditional methods.Taking a high and steep rock slope in Changchun as research object,UAV is used to collect aerial image data,the 3D real scene model of slope is established,and the discontinuities occurrence data is extracted.Co MPared with the occurrence data of representative discontinuities measured in the field,the accuracy of the new method is higher.This method provides a basis for rapid and accurate evaluation of the high and steep rock slopes stability.