Research Progress and Trend Analysis of Deep Fracture of Deep-Cut Canyon Rock Slope

With the continuous exploration of clean energy by mankind, a large number of hydropower stations have been built in western China. Most of these hydropower stations are located in the gorge surrounding the Qinghai-Tibet Plateau. The gorge are steep and deep, often accompanied by high ground stress. After a series of geological structure movements, such canyons often expose the phenomenon of deep fracture. Such phenomena can reduce the intensity of the peripheral rock body and affect the stability of high-steep slope. Therefore, this article first summarizes the development and distribution characteristics of deep-seated fracture in the slopes of typical hydropower stations. Then, it sorts out the research results of domestic and foreign scholars from the aspects of geomechanics model and genetic mechanism. Finally, on the basis of summarizing the research on deep-seated fracture, the problems and difficulties in the current research are analyzed, and the focus of future research is prospected.