A5018575562- Landslides and related hazards
- Dam Engineering and Safety
- Soil and Unsaturated Flow
- Geotechnical and Geomechanical Engineering
- Hydrology and Sediment Transport Processes
- Cryospheric studies and observations
- Granular flow and fluidized beds
- Fluid Dynamics Simulations and Interactions
- Image Processing and 3D Reconstruction
- Coastal and Marine Dynamics
- Artificial Intelligence in Healthcare and Education
- Climate change and permafrost
- Adversarial Robustness in Machine Learning
- Arctic and Antarctic ice dynamics
- Geotechnical Engineering and Analysis
Institute of Mountain Hazards and Environment
2020-2023
Chinese Academy of Sciences
2020-2023
University of Chinese Academy of Sciences
2022-2023
Abstract Overtopping flows in landslide dams erode and entrain materials on the dam surface resulting erosional features that undermine stability facilitate subsequent outburst flooding. A comprehensive understanding of evolution is therefore crucial for flood risk assessment hazard mitigation. In this research, we study mechanisms influence non‐uniform morphology breaches (i.e., non‐linear variation gradient) through experiments numerical modeling. Analog models, constructed using...
Geohazard chains in watersheds often involve a series of interconnected events, such as landslides that propagate along slopes, intrude into river channels, form landslide dams, and result dam breaches outburst flooding. Because the sub-processes within geohazard chain are coupled, one or more these events can trigger subsequent ones, leading to larger spatial temporal scales than isolated disasters. This results destructive power wider impact area. In this study, numerical case study...
Landslides in narrow valleys may block adjacent rivers and dam the incoming water flow. The collapse of these landslide dams lead to catastrophic flooding downstream. However, research regarding formation failure dams, which takes into account mobility both landslides river flow simultaneously, is still insufficient. In this study, we conducted small-scale blockage experiments wherein control relative by controlling Froude number flows investigate subsequent dams. We find that shape degree...
Deep neural networks have been demonstrated to be vulnerable adversarial attacks: subtle perturbation can completely change the prediction result. Existing attacks on object detection focus attacking anchor-based detectors, which may not work well for anchor-free detectors. In this paper, we propose first attack dedicated It is a category-wise that important pixels of all instances category simultaneously. Our manifests in two forms, sparse (SCA) and dense (DCA), minimize $L_0$ $L_\infty$...
A large number of glacial tills are distributed in the high and cold mountainous areas Qinghai-Tibet Plateau. Recently, climate change compounded by many other factors, promote instability resulting more frequent mountain disasters. Although physical properties have been extensively studied previous works, there relatively few works that focused on their shear behavior critical state for different water contents. To understand failure mechanisms, it is necessary to study effects content...
Geohazards chain in watershed contains a landslide, which contributes to the propagation on slope, intruding into river channels forming landslide dam, subsequent dam breach, and outburst flooding. Since sub-process belonging one are all coupled, or several sub-processes can be triggering factors of one. They generally own larger space time scale than that single disaster resulting greater destructive power amount impact area. In this study, most recent geohazard event happened 2018-Baige...
<p>When natural dams formed by landslides and other mass flow events are breached the impounded water, soil materials on surface of dam eroded entrained, creating erosional features that compromise its stability. The failure landslide due to breaching often results in floods debris downstream. Dam breach models assume erosion is uniform (surface gradient constant) along channel, despite observations from experiments evolution more complex. A thorough understanding during...
Sorting of rocks, boulders, and silt/sand-sized particles according to their size is a characteristic feature debris flow deposits an active process during which significantly affects the mobility. The degree at sorting occurs in flows depends on relative magnitudes granular processes such as particle segregation diffusion. Since are fluid-saturated phenomena, accurate modelling requires understanding influence fluids these processes, have not been systematically studied. Here, we present...
Debris flows are gravity-driven phenomena common in mountainous regions that hazardous to downstream facilities. To mitigate the impacts of these disastrous processes, structural countermeasures such as slit dams constructed gullies and along mountain slopes. Existing studies on impact dynamics debris against typically focus only flow characteristics but fail take geometry structure into account. Here we develop an analytical model, derived from momentum approach, allows for estimation runup...