scholarly journals Discontinued Rock Slope Analysis through a New TFS-KGM Analytical Method

2019 ◽  
Vol 8 (17) ◽  
pp. 1-18
Author(s):  
Mohsen Mohebbi ◽  
Alireza Yarahmadi Bafghi ◽  
Mohammad Fatehi Marji ◽  
Javad Gholamnejad
Keyword(s):  
Analytical Method ◽  
Rock Slope ◽  
Slope Analysis

scholarly journals A "Total Slope Analysis" methodology applied to an unstable rock slope in Washington, USA

2006 ◽  
Vol 34 ◽  
pp. 63-72
Author(s):  
A. Strouth ◽  
E. Eberhardt ◽  
O. Hungr
Keyword(s):  
Laser Scanning ◽  
Rock Slope ◽  
Distinct Element ◽  
Site Investigation ◽  
Slope Analysis ◽  
Analysis Methodology ◽  
Path Distance ◽  
Distinct Element Code ◽  
The Stability ◽  
Unstable Rock

A "Total Slope Analysis" methodology, that combines several numerical techniques, is adopted to investigate an unstable rock slope in Washington State, USA. For this specific study, the distinct-element code UDEC is used to assess the stability and potential failure volume of the rockslide. Once the potential rockslide volume has been estimated and failure mechanism assessed, the runout path, distance and velocity are assessed using the dynamic or rheological flow model DAN3D. Site investigation and data reconnaissance plays an important role for both stages in the "Total Slope Analysis", including outcrop mapping, aerial photograph interpretation, scanline joint surveys and 3-D laser scanning. The results of the "Total Slope Analysis" can be directly applied to assessment and mitigation of the landslide hazard, greatly aiding engineering judgment by providing key qualitative and quantitative insights into the risk analysis.

Rockfall Analyses at Km 13+550 in the New Road of Vlora, Albania

2021 ◽  
Vol 4 (1) ◽  
pp. 40
Author(s):  
Arjol Lule
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Elastic Moduli ◽  
Rock Slope ◽  
Initial Conditions ◽  
Complex Function ◽  
Slope Gradient ◽  
Source Areas ◽  
Slope Analysis ◽  
Rock Slides

Rockfall dynamics is a complex function of the location of the detachment point and the geometry and mechanical properties of both the block and the slope. Theoretically, knowing the initial conditions, the slope geometry, and the relationships describing the energy loss at impact or by rolling, it should be possible to compute the position and velocity of a block at any time. Nevertheless, relevant parameters are difficult to ascertain both in space and time, even for an observed event. Usually, the geometrical and geomechanically properties of the blocks (size, shape, strength, fracturing) and the slope (gradient, length and roughness, longitudinal and transversal concavities and convexities, grain size distribution, elastic moduli, water content, etc.), and the exact location of the source areas are unknown. In this paper, the sources of potential rock fallings involve a rocky area including between km 13+550 and km 13+600 in the new road of Vlora city in Albania. The area is characterized by a rock ridge, shaped like a dome, located few tens of meters above the design road. The purpose of this paper is the rock slope analysis. This analysis consists mainly of defining the sources of falling rocks, estimating the causes (by toppling, rock slides, single blocks) the size, the geometry, and type of blocks, the structural arrangement of joints, etc.

More rapid analysis of rock slopes

1984 ◽  
Vol 21 (4) ◽  
pp. 678-683
Author(s):  
D. M. Cruden
Keyword(s):  
Factor Of Safety ◽  
Rock Slope ◽  
Rapid Analysis ◽  
Rock Slopes ◽  
Equal Area ◽  
Slope Analysis ◽  
The Stability ◽  
New Criterion ◽  
Spherical Projection ◽  
Rock Wedge

When the normals to two discontinuities forming a tetrahedral wedge in a rock slope lie in the opposite halves of a spherical projection divided by a diameter through the line of intersection of the discontinuities, sliding will take place down the line of intersection of the discontinuities if this is statically possible. This new criterion simplifies the analysis of the stability of rock wedges whose motion is driven only by gravity and resisted only by friction. A factor of safety can be simply calculated for all these wedges from plots of the normals to discontinuities on an overlay of a polar, equal-area spherical projection to which the great circles of a similar equatorial projection have been added. Key words: rock, slope analysis, rock wedge, graphical methods.

Rock Slope Analysis with Nonlinear Hoek–Brown Criterion Incorporating Equivalent Mohr–Coulomb Parameters

2019 ◽  
Vol 37 (6) ◽  
pp. 4741-4757 ◽  
Author(s):  
Vinay Kumar ◽  
Navneet Himanshu ◽  
Avijit Burman
Keyword(s):  
Rock Slope ◽  
Slope Analysis

scholarly journals An Optimization of the Analytical Method for Determining the Flexural Toppling Failure Plane

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Xin Qu ◽  
Fangfang Diao
Keyword(s):  
Analytical Method ◽  
Rock Slope ◽  
Beam Model ◽  
Failure Plane ◽  
Plane Normal ◽  
Toppling Failure ◽  
Flexural Toppling ◽  
Dip Angle ◽  
The Stability ◽  
Flexural Toppling Failure

According to the results of the physical model tests, the failure plane of an anaclinal layered rock slope was a linear-type plane at an angle above the plane normal to the discontinuities, and the failure mode of rock strata was bending tension. However, the shear failure occurred near the slope toe, the effects of the cohesion of the discontinuities on the stability of the slope, and the contribution of tangential force to cross-section axial force were neglected in such studies. Moreover, none of the experts had developed a rigorously theoretical method for determining the angle between the failure plane and the plane normal to the discontinuities. This paper was initiated for the purpose of solving the problems described above. With the cantilever beam model and a step-by-step analytical method, an optimization of the analytical method for determining the flexural toppling failure plane based on the limit equilibrium theory was developed and the corresponding formulations were derived. Based on the present computational framework, comparisons with other studies were carried out by taking a slate slope in South Anhui in China and a rock slope facing the Tehran-Chalus Road near the Amir-Kabir Dam Lake in Iran. Furthermore, the sensitivity analyses of the parameters used in the calculation process of the failure angle of the slate slope in South Anhui in China were performed. The results demonstrated that the failure plane and the safety factor of the stability obtained with the presented method were credible, which verified the proposed method. The dip angle of the slope, the dip angle of the rock stratum, and the friction angle of the discontinuities were the controlling factors for the overall failure of the slate slope in South Anhui in China.

Development of a Risk-based Methodology for Rock Slope Analysis

2017 ◽  
Vol 16 (10) ◽  
pp. 1317-1328 ◽  
Author(s):  
Mahsa Moghadami ◽  
Ali Mortazavi
Keyword(s):  
Rock Slope ◽  
Slope Analysis
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