| Citation: | Zhang Zhanzhong, Chen Fuqiang, Liu Yaling, Li Dan, Du Shihui, Zhang Xiaoyu. Stability evaluation and analysis of the Jiangba deformed body in Jiali County based on remote sensing technology[J]. Bulletin of Geological Science and Technology, 2023, 42(3): 28-37. doi: 10.19509/j.cnki.dzkq.2022.0246
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The Jiangba deformed body is located approximately 5 km downstream of Jiangba village, Niwu Township, Jiali County, Tibet, on the right bank of Yigong Zangbo. Multiple surface avalanche traces are visible in the remote sensing images, and there is a threat of landslides and river blockage due to the instability of the mountain. There is an urgent need to identify the stability of the slope, the overall deformation characteristics and possible disaster threats to achieve the purpose of early prevention and plan ahead. In this study, a comprehensive research and evaluation method of "multistage image remote sensing interpretation monitoring +InSAR deformation analysis + field investigation" was adopted to interpret and analyze the slope surface of the deformed body in detail, and it is shown that the deformed body is currently in a state of "overall stability and local collapse". In recent years, the boundary of the deformed body has not changed significantly, and many small-scale landslides have occurred in the southern and eastern slope foothills. Under the influence of external environmental changes, the possibility of high collapse-debris flow still exists in the middle and upper parts of the deformed body.
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