Simulation of Slope Stability

2011 ◽  
Vol 143-144 ◽  
pp. 255-258
Author(s):  
Hai Xiao Lin ◽  
Gui Lin Wang ◽  
Ming Cheng Liao
Keyword(s):  
Slope Stability ◽  
Theoretical Basis ◽  
Slope Failure ◽  
Great Loss ◽  
Rational Treatment ◽  
Slope Collapse ◽  
Main Factors ◽  
Property Losses ◽  
Result Analysis ◽  
Abaqus Software

With railways, highways continues to build, expansion of tourism development and urban construction, to some extent destroyed the native geology, geomorphology, resulting in great loss of water and soil, geological disasters have occurred frequently, Slope became a common occurrence. Event of a slope collapse, landslides and mobility, not only nearby residents caused casualties and property losses, but also cause serious environmental impact. In this paper, combined with the actual example model, using ABAQUS software for slope stability were investigated by numerical simulation and result analysis, and development of rational treatment scheme. Through the study of the influence of the main factors for slope stability slope failure prevention, support reinforcement so as to provide a theoretical basis.

Centrifuge modelling of soil slopes containing model plant roots

2012 ◽  
Vol 49 (1) ◽  
pp. 1-17 ◽  
Author(s):  
R. Sonnenberg ◽  
M.F. Bransby ◽  
A.G. Bengough ◽  
P.D. Hallett ◽  
M.C.R. Davies
Keyword(s):  
Slope Stability ◽  
Slope Failure ◽  
Limit Equilibrium ◽  
Plant Roots ◽  
Root Reinforcement ◽  
Pull Out ◽  
Pore Water Pressures ◽  
Slope Collapse ◽  
Failure Conditions ◽  
Centrifuge Model Tests

A series of centrifuge model tests were conducted to investigate the contribution of root reinforcement to slope stability. A compacted sandy clay slope, inclined at 45°, was reinforced with model roots. The model roots were varied in material, architecture, and numbers. They had stiffness values corresponding to upper and lower values found for plant roots. The architecture included taproots and branched roots. Slope collapse was triggered by raising the water table while soil displacements, pore-water pressures, and root strains were measured. The mode of failure was changed by the presence of roots from a progressive block failure to translational failure. The tests revealed how axial strains and bending strains were mobilized in the roots and how the roots influenced the slope failure mechanism. Different limit equilibrium slope stability calculations were performed at slope failure conditions to quantify the amount of reinforcement provided by different root types. These measured root reinforcement contributions were compared with those predicted according to common root reinforcement models. A reinforcement calculation method allowing for root pull-out was found to give the best agreement.

scholarly journals The Hydromechanical Interplay in the Simplified Three-Dimensional Limit Equilibrium Analyses of Unsaturated Slope Stability

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 73
Author(s):  
Panagiotis Sitarenios ◽  
Francesca Casini
Keyword(s):  
Analytical Solution ◽  
Slope Stability ◽  
Slope Failure ◽  
Failure Modes ◽  
Pore Water Pressure ◽  
Limit Equilibrium ◽  
Water Pressure ◽  
Three Dimensional ◽  
Stability Limit ◽  
Smooth Transition

This paper presents a three-dimensional slope stability limit equilibrium solution for translational planar failure modes. The proposed solution uses Bishop’s average skeleton stress combined with the Mohr–Coulomb failure criterion to describe soil strength evolution under unsaturated conditions while its formulation ensures a natural and smooth transition from the unsaturated to the saturated regime and vice versa. The proposed analytical solution is evaluated by comparing its predictions with the results of the Ruedlingen slope failure experiment. The comparison suggests that, despite its relative simplicity, the analytical solution can capture the experimentally observed behaviour well and highlights the importance of considering lateral resistance together with a realistic interplay between mechanical parameters (cohesion) and hydraulic (pore water pressure) conditions.

scholarly journals Financial Accounting, Analysis and Features of Calculations With Personnel

2020 ◽  
Vol 11 (5) ◽  
pp. 221
Author(s):  
Gulnara A. Gareeva ◽  
Diana R. Grigoreva ◽  
Ilnur I. Mahmutov
Keyword(s):  
Theoretical Basis ◽  
Statistical Data ◽  
Financial Accounting ◽  
Final Report ◽  
Material Damage ◽  
Individual Housing ◽  
Financial Activity ◽  
Damage Compensation ◽  
Main Factors ◽  
Material Values

One of the main factors of the effectiveness of the enterprise is the staff. Competent accounting and analysis of calculations with staff for other operations can significantly affect the final financial activities of any organization. The calculations with the staff are not a less important component of the final report of the organization, on the basis of which the profit is formed. All this leads to whether the company conducts effective financial activity or not. The organization's calculations with employees for other operations include payments for merchandise paid by it to merchants, for goods purchased by employees with payment by installments at the expense of the credit received by the organization in the bank, on loans issued to employees. It also involves payments for individual housing construction, the purchase or construction of garden houses, the acquisition of a household. The main aim is to recover material damage caused by an employee of the organization as a result of shortages and theft of monetary and material values and other types of damage. To achieve this goal, the following tasks were solved: the theoretical basis for accounting for loans granted, for material damage compensation was considered, the company was analyzed. In this paper, we consider the main aspects of the management of personnel by other operations, their competent accounting, as well as analysis based on the average statistical data of companies in Russia (Gareeva & Grigoreva, 2019).

scholarly journals Characteristics of ground motion and threshold values for colluvium slope displacement induced by heavy rainfall: a case study in northern Taiwan

2016 ◽  
Vol 16 (6) ◽  
pp. 1309-1321 ◽  
Author(s):  
Ching-Jiang Jeng ◽  
Dar-Zen Sue
Keyword(s):  
Slope Stability ◽  
Heavy Rainfall ◽  
Slope Failure ◽  
Drainage System ◽  
Threshold Value ◽  
Slope Instability ◽  
Disaster Prevention ◽  
Strain Gages ◽  
Slope Displacement ◽  
Northern Taiwan

Abstract. The Huafan University campus is located in the Ta-lun Shan area in northern Taiwan, which is characterized by a dip slope covered by colluvium soil of various depths. For slope disaster prevention, a monitoring system was constructed that consisted of inclinometers, tiltmeters, crack gages, groundwater level observation wells, settlement and displacement observation marks, rebar strain gages, concrete strain gages, and rain gages. The monitoring data derived from hundreds of settlement and displacement observation marks were analyzed and compared with the displacement recorded by inclinometers. The analysis results revealed that the maximum settlement and displacement were concentrated on the areas around the Hui-Tsui, Zhi-An, and Wu-Ming buildings and coincided with periods of heavy rainfall. The computer program STABL was applied for slope stability analysis and modeling of slope failure. For prevention of slope instability, a drainage system and tieback anchors with additional stability measures were proposed to discharge excess groundwater following rainfall. Finally, threshold value curves of rainfall based on slope displacement were proposed. The curves can be applied for predicting slope stability when typhoons are expected to bring heavy rainfall and should be significant in slope disaster prevention.

scholarly journals Combined rock slope stability and shallow landslide susceptibility assessment of the Jasmund cliff area (Rügen Island, Germany)

2009 ◽  
Vol 9 (3) ◽  
pp. 687-698 ◽  
Author(s):  
A. Günther ◽  
C. Thiel
Keyword(s):  
Slope Stability ◽  
Landslide Susceptibility ◽  
Slope Failure ◽  
Rock Slope ◽  
Shallow Landslide ◽  
Material Strength ◽  
Spatial Integration ◽  
Inventory Data ◽  
Susceptibility Analysis ◽  
Susceptibility Model

Abstract. In this contribution we evaluated both the structurally-controlled failure susceptibility of the fractured Cretaceous chalk rocks and the topographically-controlled shallow landslide susceptibility of the overlying glacial sediments for the Jasmund cliff area on Rügen Island, Germany. We employed a combined methodology involving spatially distributed kinematical rock slope failure testing with tectonic fabric data, and both physically- and inventory-based shallow landslide susceptibility analysis. The rock slope failure susceptibility model identifies areas of recent cliff collapses, confirming its value in predicting the locations of future failures. The model reveals that toppling is the most important failure type in the Cretaceous chalk rocks of the area. The shallow landslide susceptibility analysis involves a physically-based slope stability evaluation which utilizes material strength and hydraulic conductivity data, and a bivariate landslide susceptibility analysis exploiting landslide inventory data and thematic information on ground conditioning factors. Both models show reasonable success rates when evaluated with the available inventory data, and an attempt was made to combine the individual models to prepare a map displaying both terrain instability and landslide susceptibility. This combination highlights unstable cliff portions lacking discrete landslide areas as well as cliff sections highly affected by past landslide events. Through a spatial integration of the rock slope failure susceptibility model with the combined shallow landslide assessment we produced a comprehensive landslide susceptibility map for the Jasmund cliff area.

Ecological Highway Slope Stability Analysis by Inversion Method

2011 ◽  
Vol 250-253 ◽  
pp. 2161-2166
Author(s):  
Jun Zhao Gao ◽  
Guo Feng Xiao ◽  
Hai Qiang Miao
Keyword(s):  
Slope Stability ◽  
Soil Mechanics ◽  
Friction Angle ◽  
Inversion Method ◽  
Time Inversion ◽  
Long Time ◽  
Main Factors ◽  
Reinforcement Design ◽  
Rock And Soil

Side slop losing stability is one of the main factors which greatly influences freeway expedite construction, especially after side slop losing stability the determination of rock and soil mechanics parameter may take a long time. Inversion method to analyze slope stability can preferably solve the problem. During the treatment of the ecological freeway landslide, we can not obtain important Parameters due to great disparity of sample Parameters of landslide. However, using inversion method to get cohesion and internal friction Angle, and anglicizing its sensitivity during calculation of stability can identify reliable Parameters. According to slope stability calculus, the ecological reinforcement design scheme come into effect.

scholarly journals Spatial and Temporal Evolution of the Infiltration Characteristics of a Loess Landslide

2020 ◽  
Vol 9 (1) ◽  
pp. 26 ◽  
Author(s):  
Dongdong Yang ◽  
Haijun Qiu ◽  
Yanqian Pei ◽  
Sheng Hu ◽  
Shuyue Ma ◽  
...  
Keyword(s):  
Slope Stability ◽  
Slope Failure ◽  
Temporal Evolution ◽  
Infiltration Rate ◽  
Middle Part ◽  
Loess Landslide ◽  
Infiltration Rates ◽  
Disturbed Soil ◽  
Landslide Body ◽  
Over Time

Infiltration plays an important role in influencing slope stability. However, the influences of slope failure on infiltration and the evolution of infiltration over time and space remain unclear. We studied and compared the infiltration rates in undisturbed loess and disturbed loess in different years and at different sites on loess landslide bodies. The results showed that the average initial infiltration rate in a new landslide body (triggered on 11 October 2017) were dramatically higher than those in a previous landslide body (triggered on 17 September 2011) and that the infiltration rates of both landslide types were higher than the rate of undisturbed loess. The initial infiltration rate in the new landslide body sharply decreased over the 4–5 months following the landslide because of the appearance of physical crusts. Our observations indicated that the infiltration rate of the disturbed soil in a landslide evolved over time and that the infiltration rate gradually approached that of undisturbed loess. Furthermore, in the undisturbed loess, both the initial and quasi-steady infiltration rates were slightly higher in the loess than in the paleosol, and in the previous landslide body, the infiltration rate was highest in the upper part, intermediate in the middle part, and lowest in the lower part. This study can help us to better understand the evolution process of infiltration in undisturbed loess, previous landslides, and new landslides.

scholarly journals Rapid and robust slope failure appraisal using aerial photogrammetry and 3D slope stability models

2020 ◽  
Vol 30 (5) ◽  
pp. 651-658 ◽  
Author(s):  
Neil Bar ◽  
Michael Kostadinovski ◽  
Michael Tucker ◽  
Glen Byng ◽  
Rully Rachmatullah ◽  
...  
Keyword(s):  
Slope Stability ◽  
Slope Failure ◽  
Aerial Photogrammetry ◽  
3D Slope Stability

Experimental Study on Slope Stability with Soil Mixed Rocks under Rainfall

2012 ◽  
Vol 170-173 ◽  
pp. 506-510
Author(s):  
Fang Cai Zhu ◽  
Yue Yang ◽  
Chun Ming Chen
Keyword(s):  
Experimental Study ◽  
Slope Stability ◽  
Water Content ◽  
Slope Failure ◽  
Western China ◽  
Laboratory Model ◽  
Small Scale ◽  
Loss Of Life ◽  
Key Factor ◽  
Scale Failure

Rainfall is a key factor that triggers failure of slopes. Due to development of western China, there are more and more slopes with soils mixed rocks, with rainfall effect, some of them will fail, which will lead to loss of life and property. In this paper, a laboratory model was used to simulate to study slope failure of this type under rainfall. Along with rainfall, water infiltrated into the slope, and water content increased steadily and kept almost constant, settlement of inner zone increased with different magnitude and reached almost constant value, and cracks formed on the top, small scale failure occurred.

Theoretical basis for improving the process of adaptation of young professionals of state and municipal institutions

2019 ◽  
Vol 4 (1) ◽  
pp. 72-80
Author(s):  
Наталья Ванюшина ◽  
Natalya Vanyushina
Keyword(s):  
Theoretical Basis ◽  
Systematic Approach ◽  
The State ◽  
Successful Outcome ◽  
Educational Work ◽  
Young Professionals ◽  
Management Function ◽  
Professional Environment ◽  
Main Factors ◽  
Systemic Nature

Adaptation of young employees is multidimensional, with its implementation the issues of organizing work with personnel, psychological and educational work are closely intertwined. This process is not only an important personnel management function, which allows to increase its potential through systematic replenishment with qualified specialists, but also acts as a process of successful outcome, which depends on two main factors: the state of the youngest employee and the state of the professional environment surrounding him. At present, the main problem of the adaptation of young employees is the non-systemic nature of this activity. The formal attitude of managers to the implementation of activities aimed at the professional development of young employees. The success of the process of adaptation of young employees primarily depends on taking into account the comprehensive aspects of the profession, the characteristics of young employees, abilities and skills, as well as a systematic approach that creates a synergistic effect of all the activities carried out.

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