scholarly journals Seismic impacts influence on the slope stability on the example of Abrau Peninsula (Russian sector of black sea coast)

2020 ◽  
Vol 157 ◽  
pp. 02022
Author(s):  
Mihail Kropotkin
Keyword(s):  
Slope Stability ◽  
Seismic Waves ◽  
Seismic Effects ◽  
Stability Calculation ◽  
Black Sea Coast ◽  
Russian Sector ◽  
Seismic Accelerations ◽  
The Stability ◽  
Seismic Impact ◽  
Seismic Impacts

Some aspects of seismic impact on the stability of massive seismogravitational solid masses are examined. An example of the slope stability calculation using separate accounting for seismic accelerations in blocks is shown. The influence of the relief on the change in seismic effects is considered. Some aspects of seismic impact on the stability of massive seismogravitational solid masses are examined. An example of the slope stability calculation using separate accounting for seismic accelerations in blocks is shown. The influence of the relief on the change in seismic effects is considered. The comparative impact of longitudinal and transverse seismic waves from the earthquake focuses located in front of the slope foot and behind the slope ridge is evaluated.

scholarly journals SPECTRAL ANALYSIS OF THE SEISMIC IMPACT IN NEAR ZONE OF STRONG EARTHQUAKE AND EFFECT DETAILS

2016 ◽  
Author(s):  
Э.Г. Геодакян ◽  
Дж.К. Карапетян ◽  
В.Б. Заалишвили ◽  
С.М. Оганесян ◽  
С.Н. Саргсян
Keyword(s):  
Spectral Analysis ◽  
Strong Earthquake ◽  
Seismic Waves ◽  
Geological Structure ◽  
Observation Point ◽  
Geological Environment ◽  
Seismic Effects ◽  
Near Zone ◽  
Seismic Impact ◽  
Instrumental Records

На основе цифровых инструментальных записей исследованы влияние геологической среды распространения сейсмических волн и геологического строения «инженерного» слоя под пунктом наблюдения на амплитудный уровень и частотный состав сейсмических воздействий The influence of the geological environment of seismic waves and the geological structure of the «engineering» layer under observation point on the level of amplitude and frequency composition of seismic effects are investigated on the basis of digital instrumental records

The antiresonance phenomena in seismic microzonation

2021 ◽  
pp. 8-18
Author(s):  
Alexander S. Aleshin
Keyword(s):  
Seismic Waves ◽  
Seismic Intensity ◽  
Seismic Microzonation ◽  
Seismic Impact ◽  
Seismic Impacts

The interference of incident and reflected seismic waves in the ground massif near the day surface is the cause of resonant effects. In the practice of seismic microzonation (SMZ), a resonant increase in the total seismic intensity is of particular importance. At the same time, the presence of inverse layers in the ground layers interference leads to a decrease in the intensity of the total seismic impact, what is naturally named antiresonance. The article considers the conditions for the occurrence of antiresonance and evaluates the limits of its effectiveness. The natural and man-made causes of antiresonance and the possibility of using it to reduce the intensity of seismic impacts are particularly noted.

Precise evaluation method for the stability analysis of multi-scale slopes

SIMULATION ◽  
2020 ◽  
Vol 96 (10) ◽  
pp. 841-848
Author(s):  
Xiangjie Yin ◽  
Hang Lin ◽  
Yifan Chen ◽  
Yixian Wang ◽  
Yanlin Zhao
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Slope Stability Analysis ◽  
Grid Size ◽  
Computational Error ◽  
Stability Calculation ◽  
Correlation Relationship ◽  
Multi Scale ◽  
The Stability

Slope stability analysis is a multi-scale problem. Typically, owing to the distinctions of slope scales (e.g., slope height or slope angle) in practical engineering, the stability calculation results of slopes with various scales from numerical methods inevitably exhibit different computational precision levels in the case of identical computational grids, and therefore the stability results of different slopes cannot be compared. To achieve equal accuracy stability analysis for multi-scale slopes, this study establishes numerical models of slopes with various scales as well as different grid shapes and sizes to conduct stability analysis. The results show the following: (a) a positive correlation relationship exists between the safety factor of the slope and the scaling factor, which is defined as the ratio of the grid size to the slope height; (b) the definition of the refined safety factor is given, representing the safety factor that corresponds to the infinitesimal grid size and eliminating the computational error of slope stability analysis caused by grid size or shape; (c) on this basis, embarking on the composite influence of multiple scales of slope on stability analysis, the study proposes a simplified treatment method suitable for evaluating the refined safety factor of the multi-scale slopes, which is verified as valid and feasible by some examples.

scholarly journals Assessment of the factors affecting slope stability in the southern part of the Sofia Kettle

2021 ◽  
Vol 50 (3) ◽  
pp. 55-63
Author(s):  
Miroslav Krastanov ◽  
Boyko Berov
Keyword(s):  
Slope Stability ◽  
Anthropogenic Impact ◽  
Anthropogenic Impacts ◽  
Assessment Model ◽  
Factors Affecting ◽  
Destabilizing Factors ◽  
Landslide Processes ◽  
The Stability ◽  
Seismic Impact ◽  
The Impact

A specific sample area was selected, where an assessment model was made for the stability of a slope subjected to anthropogenic impacts. A hillside slope zone from the foot of the Vitosha and Lozen mountains in the southern periphery of the Sofia Kettle was chosen as an exemplary area for a part of the hazards arising in the Trans-Balkan valleys. The anthropogenic impact on their slope stability was studied on three particular slopes. The study area is about 1.25 km2 and has a maximum distance of up to 3.80 km between the slopes. Landslide processes resulting from anthropogenic impact often occur on the territory of the Sofia Valley. The rise of construction, the development of hard-to-reach terrains with steep slopes, their undercutting, the seismic impact and the low values of the strength-deformation parameters of the geological varieties building up the respective terrains contribute to their occurrence. The deforestation, the loads with heavy embankments, the hydration and the inhomogeneity of the layers of the earth base have a strong destabilizing effect. The paper presents the results of field and laboratory tests and analyses of slope stability by the method of Fellenius. The severity of the impact of the various destabilizing factors was assessed.

The stability and collapse of lava domes: insight from UAS-derived 4D structure and slope stability models

2020 ◽  
Author(s):  
Brett Carr ◽  
Einat Lev ◽  
Loÿc Vanderkluysen ◽  
Danielle Moyer ◽  
Gayatri Marliyani ◽  
...  
Keyword(s):  
Slope Stability ◽  
Lava Domes ◽  
The Stability

ANALISIS KESTABILAN LERENG DINDING AKHIR DI PIT BARATLAUT PADA PENAMBANGAN BATUBARA DI PT. PUTERA BARA MITRA , KECAMATAN MENTEWE, KALIMANTAN SELATAN

KURVATEK ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 21-34
Author(s):  
Untung Wahyudi ◽  
Excelsior T P ◽  
Luthfi Wahyudi
Keyword(s):  
Slope Stability ◽  
Mining Operation ◽  
Subsurface Water ◽  
Mining System ◽  
Mine Site ◽  
Analysis And Design ◽  
The Stability ◽  
End Wall ◽  
Wall Slope ◽  
Mining Slope

PT. Putera Bara Mitra used open mining system for mining operation, Yet the completion of study on the end wall slope stability that  undertaken by geotechnical PT. Putera Bara Mitra in Northwest Pit and the occured a failure in the low wall on the 1st June 2012 led to the need for analysis and design the overall slope at the mine site. To analyze and design the overall slope, used value of the recommended minimum safety. The value was based on company for single slope SF ≥ 1.2 and SF ≥ 1.3 for overall slope. The calculation used Bichop method with the help of software slide v 5.0. Geometry improvements was done at the low slopes that originally single wall with a 30 m bench height and a slope 70° with SF = 0.781, into 4 levels with SF = 1.305. The analysis explained the factors that affect the stability of the low wall included the mining slope geometry, unfavorable drainase system, material stockpiles and seismicity factors. It was necessary to do prevention efforts to maintain the stability of the slope included the redesign to slope geometry, handling surface and subsurface water in a way to control slopes draining groundwater, vegetation stabilization using and monitoring slope using Total Station with Prism and Crackmeter to determine the movement of cracks visible on the surface. 

Slope Stability Analysis under the Condition of Seepage

2012 ◽  
Vol 204-208 ◽  
pp. 241-245
Author(s):  
Yang Jin
Keyword(s):  
Finite Element Method ◽  
Shear Strength ◽  
Slope Stability ◽  
Negative Impact ◽  
Strength Reduction ◽  
Soil Slope ◽  
Failure State ◽  
Calculation Results ◽  
The Stability ◽  
Shear Strength Reduction

The stability of soil slope under seepage is calculated and analyzed by using finite element method based on the technique of shear strength reduction. When the condition of seepage or not is considered respectively, the critical failure state of slopes and corresponding safety coefficients can be determined by the numerical analysis and calculation. Besides, through analyzing and comparing the calculation results, it shows that seepage has a negative impact on slope stability.

Soil Strength Reduction Method Induced by Variation of Water Content

2012 ◽  
Vol 170-173 ◽  
pp. 847-852
Author(s):  
Peng Ming Jiang ◽  
Zhong Lei Yan ◽  
Peng Li
Keyword(s):  
Slope Stability ◽  
Unsaturated Soil ◽  
Unsaturated Soils ◽  
Characteristic Curve ◽  
Strength Reduction ◽  
Actual State ◽  
Soil Slope ◽  
Simple Method ◽  
The Common ◽  
The Stability

As the complexity of unsaturated soil theory, and it must have a long test period when we study the unsaturated soils, so the conventional design analysis software does not provide such analysis, so we can imagine that such a slope stability analysis does not accurately reflect the actual state of the slope. Based on the known soil moisture content，this paper use the soil water characteristic curve and strength theory of unsaturated soil to calculate the strength reduction parameters of soil which can calculate the stability of the soil slope when using the common calculation method. It is noticeable that this method can be extended and applied if we establish regional databases for this simple method, and these databases can improve the accuracy of the calculation of slope stability.

scholarly journals Sliding Mode Control and Geometrization Conjecture in Seismic Response

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 353
Author(s):  
Ligia Munteanu ◽  
Dan Dumitriu ◽  
Cornel Brisan ◽  
Mircea Bara ◽  
Veturia Chiroiu ◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Ricci Flow ◽  
Lyapunov Functions ◽  
Seismic Waves ◽  
Sliding Mode ◽  
Flow Process ◽  
Mode Control ◽  
Finite Period ◽  
The Stability ◽  
Story Building

The purpose of this paper is to study the sliding mode control as a Ricci flow process in the context of a three-story building structure subjected to seismic waves. The stability conditions result from two Lyapunov functions, the first associated with slipping in a finite period of time and the second with convergence of trajectories to the desired state. Simulation results show that the Ricci flow control leads to minimization of the displacements of the floors.

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