Assessing rockfall susceptibility in steep and overhanging slopes using three-dimensional analysis of failure mechanisms
Rockfalls strongly influence the evolution of steep rocky landscapes and represent a
significant hazard in mountainous areas. Defining the most probable future rockfall source …
significant hazard in mountainous areas. Defining the most probable future rockfall source …
Stability analysis of slopes with a potential of slide-head-toppling failure
Toppling is a mode of slope instability that may occur in a wide range of layered or blocky
rock masses. If this instability is caused by some natural or man-made external factors, it is …
rock masses. If this instability is caused by some natural or man-made external factors, it is …
Tunnel reinforcement in columnar jointed basalts: the role of rock mass anisotropy
The extent of the loosening zone in tunnels excavated through columnar jointed basalts is
studied with the numerical discontinuous deformation analysis (DDA) method. The structure …
studied with the numerical discontinuous deformation analysis (DDA) method. The structure …
Enrichment of three-dimensional numerical manifold method with cover-based contact theory for static and dynamic mechanical response analysis
Based on the mathematical grid of 4-node tetrahedral finite element form, the dual cover
system, weight function and displacement function of three-dimensional numerical manifold …
system, weight function and displacement function of three-dimensional numerical manifold …
An analytical solution for analysis of toppling-slum** failure in rock slopes
When a slope consists of a horizontal weak rock or soil overlaid by some vertical strong
slender rock columns, the slope is prone to a secondary toppling failure which is known as …
slender rock columns, the slope is prone to a secondary toppling failure which is known as …
A robust contact detection algorithm based on the Contact Theory in the three-dimensional discontinuous deformation analysis
K Ni, Y Ning, J Yang, Y Shao, Z Wang - International Journal of Rock …, 2020 - Elsevier
The two-dimensional discontinuous deformation analysis (DDA), as a discrete numerical
method, has been successfully used to simulate many rock mechanics and rock engineering …
method, has been successfully used to simulate many rock mechanics and rock engineering …
Mixed linear complementarity formulation of discontinuous deformation analysis
H Zheng, X Li - International Journal of Rock Mechanics and Mining …, 2015 - Elsevier
Abstract In the classical Discontinuous Deformation Analysis (DDA) the contact conditions
are enforced by what is referred to as open–close iteration. The open–close iteration …
are enforced by what is referred to as open–close iteration. The open–close iteration …
Numerical modeling of rock slopes with a potential of block-flexural toppling failure
One of the most important instabilities of rock slopes is toppling failure. Among the types of
toppling failure, block-flexural failures are more common instability which occurs in nature. In …
toppling failure, block-flexural failures are more common instability which occurs in nature. In …
[BOOK][B] Discontinuous deformation analysis in rock mechanics practice
The numerical, discrete element, Discontinuous Deformation Analysis (DDA) method was
developed by Dr. Gen-hua Shi while he was working at the University of California …
developed by Dr. Gen-hua Shi while he was working at the University of California …
[HTML][HTML] Overhanging rock slope by design: An integrated approach using rock mass strength characterisation, large-scale numerical modelling and limit equilibrium …
P Schlotfeldt, D Elmo, B Panton - Journal of Rock Mechanics and …, 2018 - Elsevier
Overhanging rock slopes (steeper than 90°) are typically avoided in rock engineering
design, particularly where the scale of the slope exceeds the scale of fracturing present in …
design, particularly where the scale of the slope exceeds the scale of fracturing present in …