Rapid design assessments from slope stability calculation results

1991 ◽  
Vol 28 (4) ◽  
pp. A249
Keyword(s):  
Slope Stability ◽  
Stability Calculation ◽  
Rapid Design ◽  
Calculation Results

scholarly journals Analysis of rainfall-induced shallow landslides in Jamne and Jaszcze stream valleys (Polish Carpathians) – preliminary results

2016 ◽  
Vol 48 (1) ◽  
pp. 27-40
Author(s):  
Tymoteusz Zydroń ◽  
Anna Bucała ◽  
Piotr Demczuk
Keyword(s):  
Slope Stability ◽  
Shallow Landslide ◽  
Shallow Landslides ◽  
Landslide Susceptibility Mapping ◽  
Intense Rainfall ◽  
Stability Calculation ◽  
Preliminary Results ◽  
Calculation Results ◽  
Polish Carpathians ◽  
Using Data

Abstract Analysis of rainfall-induced shallow landslides in Jamne and Jaszcze stream valleys (Polish Carpathians) - preliminary results. Preliminary shallow landslide susceptibility mapping of the Jamne and Jaszcze stream valleys, located in the Polish Flysch Carpathians, is presented in the paper. For the purpose of mapping, there were used SINMAP and Iverson’s models integrating infiltration and slope stability calculations. The calibration of the used models parameters, obtained from limited field and laboratory tests, was performed using data from 8-9 July 1997, when as a consequence of a very intense rainfall, 94 shallow landslides were observed on meadows and arable lands. A comparison of the slope stability calculation results and the localisation of the noticed shallow landslides showed satisfactory agreement between localisation of the observed and computed unstable areas. However, it was concluded that better simulation results were obtained using Iverson’s model.

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.

Influence of a Flux-Coupling Type Superconducting Fault Current Limiter on Power System Transient Stability

2012 ◽  
Vol 588-589 ◽  
pp. 632-637
Author(s):  
Ge Fei Qiu ◽  
Jun Hao Cao ◽  
Zi Qing Xu ◽  
Meng Song ◽  
Lei Chen ◽  
...  
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Stability Calculation ◽  
Superconducting Fault Current Limiter ◽  
Flux Coupling ◽  
Calculation Results ◽  
Current Limiter ◽  
Coupling Type

In this paper, the influence of superconducting fault current limiter (SFCL, flux-coupling type) on power system transient stability is studied in detail. The influence of SFCL to transient stability of power system is studied using a model of single generator infinite bus system, different transient stability calculation results gotten with and without SFCL and with model system in different fault conditions are compared. The results show that the SFCL can effectively reduce the transient swing amplitude of rotor and extend the critical clearance time, and the application of SFCL in the power system can help to enhance its transient stability.

scholarly journals Landslide Sustainability Report on R. Gogiashvili Street in Tbilisi Using GEO5 Program

2021 ◽  
pp. 185-191
Author(s):  
Niko Poporadze ◽  
Keyword(s):  
Slope Stability ◽  
Computer Programs ◽  
Stability Calculation ◽  
Correct Method ◽  
Sustainability Report

The slope stability calculation is quite time-consuming, which requires first selecting the correct method and then calculating the coefficient of stability using different formulas. It should also be noted that visualization of the analysis results requires a great deal of time, which is quite impractical. To solve this problem, many geotechnical computer programs have been created, which can be used to report slope stability reports in a split of a second. The most common geotechnical software in Georgia is GEO5 slope stability, which allows us to calculate slope stabilities very quickly and effectively with various methods and standards.

scholarly journals Peningkatan Stabilitas Lereng pada Ruas Jalan Tawaeli – Toboli dengan Vegetasi/Bioengineering

2021 ◽  
pp. 23-32
Author(s):  
S.A. Wandira ◽  
A. Rahayu
Keyword(s):  
Shear Strength ◽  
Slope Stability ◽  
Safety Factor ◽  
Friction Angle ◽  
Soil Samples ◽  
Plant Roots ◽  
Soil Conditions ◽  
Mountainous Area ◽  
Stability Calculation ◽  
The Road

Tawaeli - Toboli is one of the road that often undergo landslide. Most of these roads are in a mountainous area with high steep slopes and poor soil conditions. The road conditions worsened, especially in rainy season resulting the citizen do not know anywhere that is prone to landslides such as in Km 16 to 17. The purpose of this study was to analyze slope stability using bioengineering methods, determine the shear strength of soil without plant roots and soil with plant roots and to determine the potential for landslides that will occur. Bioengineering is used to increase the strength of the soil, and stabilize slopes and reduce erosion on slopes. The slope stability calculation using the Bishop slice method. The calculating of safety factor analyzed using the Slope / W application and manually. Soil samples were taken from 3 (three) points and the soil strength parameters,  soil cohesion and friction angle, were obtained through laboratory testing. Tests were carried out using rootless and rooted soil samples. In addition, direct field observations were made to obtain slope angles and slope heights. The results showed that the parameters of soil shear strength, cohesion and friction angle increased with the presence of plant roots. The results of the slope stability analysis show that the conditions of the slope are stable at slope 1 (Km 16) and slope 3 (Km 17) with a safety factor greater than 1.5. While slope 2 (Km 16 +300) has the potential for landslides as a safety factor of less than 1.5. The use of bioengineering increases the safety factor to be greater than 1.5. The calculation of the value of the safety factor using the Slope / W program and the Bishop manual is not much different, but the calculation time with the Slope / W program is faster

scholarly journals Slope Stability Calculation Method of Highwall Mining with Open Cut Mines as an Example

2021 ◽  
Author(s):  
Juyu Jiang ◽  
Ye Lu ◽  
Dong Wang ◽  
Xinping Han
Keyword(s):  
Slope Stability ◽  
Recovery Rate ◽  
Limit Equilibrium ◽  
Coal Pillar ◽  
Time Dependent ◽  
Universal Method ◽  
Stability Calculation ◽  
Target Time ◽  
Highwall Mining ◽  
Overlying Strata

Abstract Highwall mining machines have been used to recover retained coal at the toe of highwalls and endwalls over the past few decades. However, there has not been a universal method to evaluate the slope stability using highwall mining while maximizing the recovery rate. Based on the required service time of coal pillars, this study proposes the concept of the target time pillar strength. To obtain time-dependent parameters for the coal, time-dependent shear tests were performed on specimens from an open-cut mine in Inner Mongolia. The highwall mining length was divided into three categories based on discontinuous structural plane theory: goaf, yielding, and elastic zones. The three zones were considered to all have resistances against shear stress. The basal coal seam is likely to become weak due to weight from the overlying strata, which may change the slope failure mode from circular to sliding along the weak layer. Numerical modeling was used to study the influence of the overlying strata and target time strength on the yielding zone development at the coal pillar ribs. The coefficients of the three zones were determined and substituted into the Mohr-Coulomb equation to obtain the time-dependent shear strength parameters. Subsequently, the influence of highwall mining on the slope stability was evaluated using the rigid body-limit equilibrium method (LEM). The optimized coal pillar width is determined to maximize the recovery rate without compromising the slope stability.

Analysis and Study on Slope Stability of High Fill Subgrade

2014 ◽  
Vol 919-921 ◽  
pp. 637-640 ◽  
Author(s):  
Qi Zhang
Keyword(s):  
Finite Element Method ◽  
Slope Stability ◽  
Slope Failure ◽  
Lateral Displacement ◽  
Limit Equilibrium ◽  
Soil Deformation ◽  
High Slope ◽  
Calculation Results ◽  
External Conditions ◽  
The Stability

The slope failure of high fill embankment have a large proportion under self-weight and external conditions,Because of the complexity of the soil deformation and stress,General methods such as the limit equilibrium and numerical analysis have their own limitations,The paper takes high fill subgrade engineering in Fujian province as the background.Adopting analytical method and finite element method calculate the stability coefficient and lateral displacement of high fill embankment slope.moreover,Making a comprehensive judgement to the stability of the slope by comparing with the actual value.The results show that calculation results of these two methods are close.Which can make accurate predictions on high slope stability and determine a judgement.and provides an effective method for the design and construction of the similar project.

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