Research on the Development Characteristics and Stages of Cracks in Dongjiahe River Using Tilt Photogrammetry Technology  

作　　者：Lei Liang Lei Liang(School of Earth Sciences and Engineering, Xian Shiyou University, Xian, China;Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xian Shiyou University, Xian, China)

机构地区：[1]School of Earth Sciences and Engineering, Xian Shiyou University, Xian, China [2]Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xian Shiyou University, Xian, China

出　　处：《Journal of Geoscience and Environment Protection》2025年第2期22-31,共10页地球科学和环境保护期刊(英文)

摘　　要：Cracks are important migration channels and storage spaces for oil and gas, and the peripheral cracks in the Ordos Basin have developed extensively after multiple tectonic movements. Using unmanned aerial vehicle oblique photogrammetry technology to obtain field outcrop image data and establish a three-dimensional model for observation, the NEE and NNW fractures are the most developed in the Yanchang Formation of the study area, while the NW and NNE fractures are slightly developed, all of which are high angle vertical fractures and belong to regional structural fractures. The NNW oriented cracks are restricted by the NEE oriented cracks and developed in the late stage. Combined with the analysis of regional geological background, fracture intersection relationship and tectonic stress field, it is considered that there are two stages of fractures in Dongjiahe, namely, the late Indosinian and Yanshanian.Cracks are important migration channels and storage spaces for oil and gas, and the peripheral cracks in the Ordos Basin have developed extensively after multiple tectonic movements. Using unmanned aerial vehicle oblique photogrammetry technology to obtain field outcrop image data and establish a three-dimensional model for observation, the NEE and NNW fractures are the most developed in the Yanchang Formation of the study area, while the NW and NNE fractures are slightly developed, all of which are high angle vertical fractures and belong to regional structural fractures. The NNW oriented cracks are restricted by the NEE oriented cracks and developed in the late stage. Combined with the analysis of regional geological background, fracture intersection relationship and tectonic stress field, it is considered that there are two stages of fractures in Dongjiahe, namely, the late Indosinian and Yanshanian.

关 键 词：Tilt Photogrammetry Technology Field Outcrop Yanchang Formation Crack Developing Feature Formation Stages 

分 类 号：P61[天文地球—矿床学]