scholarly journals Slope stability analysis along the proposed Kathmandu-Hetauda Road with tunnel sections

2000 ◽  
Vol 22 ◽  
Author(s):  
I. R. Humagain ◽  
K. Schetelig ◽  
M. P. Sharma ◽  
B. N. Upreti ◽  
M. Langer
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Shear Zones ◽  
Slope Stability Analysis ◽  
Fold Axis ◽  
Lesser Himalaya ◽  
Main Boundary Thrust ◽  
Wedge Sliding ◽  
The Stability

The proposed Kathmandu-Hetauda Road alignment passes through Thankot, Chitlang, Kulekhani, Bhimphedi, and Bhaisedobhan. It is the shortest as well as least hazardous route very suitable for a standard highway. It has the following three tunnel sections: the Thankot Tunnel (3.2 km long), the Kulekhani Tunnel (500 m long), and the Chisapani Tunnel (3.8 km long). The alignment passes through the Kathmandu Nappe, Upper Nawakot Group of the Lesser Himalaya, and the Siwaliks. It also crosses the Main Boundary Thrust and the Mahabharat Thrust, four major faults/shear zones, and a major fold axis. The areas of plane sliding, wedge sliding, and toppling are delimited on the basis of the study of discontinuities along the proposed alignment. The stability analysis show s that 60-75% of the total road length is stable, 20-30% is fair, 5- 15% is weak, and 2-5% is critical.

Application of GM (1, N) Model on Slope Stability Analysis in Open Pit Mine

2011 ◽  
Vol 84-85 ◽  
pp. 729-732 ◽  
Author(s):  
Jun Guo ◽  
De Qing Gan ◽  
Yu Zhang ◽  
Wei Hang Zhang
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Slope Stability Analysis ◽  
Open Pit Mine ◽  
Open Pit ◽  
Model Based ◽  
Strip Mine ◽  
The Stability ◽  
Major Factors

The paper analyzed major factors that influence the stability of open-pit slope and established the GM (1, N) model based on the program of Xingshan strip mine, which provided an effective method for evaluating the slope stability.

Search of the Most Dangerous in Slide Slope Stability Analysis Based on Genetic Algorithm

2012 ◽  
Vol 166-169 ◽  
pp. 2535-2538
Author(s):  
Ke Wang ◽  
Chang Ming Wang ◽  
Fang Qi ◽  
Cen Cen Niu
Keyword(s):  
Genetic Algorithm ◽  
Stability Analysis ◽  
Slope Stability ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Evolutionary Process ◽  
Limit Equilibrium Method ◽  
Slope Stability Analysis ◽  
Equilibrium Method ◽  
The Stability

The traditional limit equilibrium method in the analysis of slope stability not only exists some subjective empirical hypothesis that can not meet the equilibrium of force and moment, but also ignores the effects of internal stress and strain on the slope stability. Furthermore, in the stability of the slope evaluation, limit equilibrium method relies too much on experience when hypothesizing the slope slip surface. So that it makes deviation on slope analysis and stability evaluation. This paper is based on simplified Bishop method used to establish the model of slope stability analysis. And it used genetic algorithms to solve the minimum safety factor and the most dangerous slip surface of slope. It was the arithmetic which simulates organisms genetic evolutionary process and it avoided the traditional methods falling into the local extreme value point easily and error propagation leading to convergence. The algorithm had advantages of higher accuracy, quick convergence and applicability. It showed that the genetic algorithm is accurate and reliable in the analysis of slope stability.

scholarly journals Slope Stability Analysis of Kattery Watershed in Nilgiris District

2019 ◽  
Vol 12 (6) ◽  
pp. 163-169
Author(s):  
C. Rajakumar ◽  
P. Kodanda Rama Rao
Keyword(s):  
Shear Strength ◽  
Stability Analysis ◽  
Internal Friction ◽  
Slope Stability ◽  
Factor Of Safety ◽  
Slope Stability Analysis ◽  
Strength Parameter ◽  
Angle Of Internal Friction ◽  
Shear Strength Parameter ◽  
The Stability

The slope stability analysis is always under severe threats in many parts of nilgiris district, causing disruption, loss of human life and economy. The stability of slopes depends on the soil shear strength parameters such as Cohesion, Angle of internal friction, Unit weight of soil and Slope geometry. The stability of a slope is measured by its factor of safety using geometric and shear strength parameter based on infinite slopes. In this research, investigation was carried out at 5 locations in Kattery watershed in nilgiris district. The factor of safety of the slope determined by Mohr Coulomb theory based on shear strength parameter calculated from direct shear test which is a conventional procedure for this study. Artificial. Neural Network (ANN) Model is used to predict the factor of safety. The input parameters for the (ANN) are chosen as Cohesion, Angle of internal friction, Density and Slope angle and the factor of safety as output. The results obtained in ANN method were compared with that of conventional method and observed a good agreement between these two methods.

scholarly journals Slope Stability Analysis Under Pore-Water Pressure: A Case Study in Zarm-Rood Earthfill Dam, Iran

2021 ◽  
Author(s):  
Mojtaba Gholamzade ◽  
Ahad Bagherzadeh Khalkhali
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Pore Water ◽  
Safety Factor ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Slope Stability Analysis ◽  
Operating Conditions ◽  
Successful Implementation ◽  
The Stability

Abstract It is well known that construction of dams or reservoirs have geomorphological impacts on the environment and could potentially accelerate the occurrence of landslides. One of the most common impact is the occurrence of new landslides and activation of the old one, which may turn into a natural disaster. Thus, controlling the stability of landslides become challenging issue specifically in the presence of f pore-water pressure. In general, the presence of water or pore-water pressure reduces the soil resistance and also leads to increase in stimulus loads, resulting in reduction of stability coefficients. In the present study, using GeoStudio SLOPE/W software, the effect of the proximity of the dam reservoir in terms of different operating conditions on the stability analysis of the landslide area of ​​Zarm-Rood Dam is investigated. In the first step, the evaluation of internal stability of landslides and the effect of the presence of water on stability coefficients were evaluated and then the sustainable design of landslides was proposed. It was found that when extra pore-water pressure ranges from 0.2 to 0.4, safety factor is decreased by about 10%. Accordingly, safety factor is decreased by about 17% when extra pore-water pressure range from 0.4 to 0.6. This research demonstrates successful implementation of GeoStudio SLOPE/W for slope stability analysis in dam construction projects.

Stability Analysis on High and Steep Slope of Open-Pit Based on Limit Equilibrium Method

2015 ◽  
Vol 777 ◽  
pp. 106-111 ◽  
Author(s):  
Zhen Hua Xie ◽  
Ran Yi Xie ◽  
Xiao Yue Lu
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Slope Stability Analysis ◽  
Steep Slope ◽  
Open Pit ◽  
Safety Coefficient ◽  
The Stability ◽  
High And Steep Slope

The stability of slope in open-pit affects the economic benefits and safety production of mining enterprises. From the two aspects of internal factors and external factors, this paper analyses the factors affecting the slope stability of open-pit, discusses the basic theory of slope stability analysis, and puts forward the criterion of slope stability based on the safety coefficient. The limit equilibrium method is chosen to analyze the stability of the high and steep slope of open-pit in this paper, and the SLIDE software is used for numerical simulation according to the actual slope model of certain open-pit. The simulation results show that the slope safety coefficient of the instance is 1.01, which is unstable slope. When the number of the slope blocks is more than 40, the safety coefficient tend to be stable. Blasting vibration has a great influence on slope stability. The results of slope stability analysis provide a scientific guidance for the prevention and control of the slope instability.

scholarly journals Slope stability analysis of man-made soil body surrounding the abandoned hydraulic dump

2020 ◽  
pp. 47-55
Author(s):  
Karablin Mikhail ◽  
◽  
Prostov Sergei ◽  
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Pore Pressure ◽  
Slope Stability Analysis ◽  
Geological Survey ◽  
Actual State ◽  
Overburden Rock ◽  
Geophysical Model ◽  
Stability Of Slopes ◽  
The Stability

Introduction. Pit slope sections directly adjoining hydraulic dumps are characterized by the higher risk of landslide, especially in case of storing dry overburden rock over the hydraulically filled overburden. It is contributed to by the combination of the following factors: increase of the total height of the slope, development within the slope of a waterlogged zone of weakness with complex footprint map and depth configuration; excessive pore pressure within this zone which grows by means of adding dry dump to hydraulically filled rock. To reduce risks connected with man-made soil body slope stability violation, slope stability analysis is carried out based on the results of geological survey, hydrogeological observations and geophysical sounding. Research aims to analyze the stability of the Krasnobrodsky coal pit man-made mass adjoining the Bakhtykhtinsky hydraulic dump based on the 3D geological-geophysical model. Methodology. The authors of the article offered and realized the algorithm of analyzing the stability of slopes based on 3D geological and geophysical models formed by integrating geological, hydrogeological and geophysical data. Results. Based on geological survey data analysis, hydrogeological survey and electric sounding, 3D geological-geophysical model of a man-made soil body adjoining Bakhtykhtinsky hydraulic dump has been built. Slope stability analysis of an actual state of the man-made soil body has been carried out. ISSN 0536-1028 «Известия вузов. Горный журнал», № 5, 2020 55 Summary. In order to develop a 3D geological-geophysical model, in addition to slope geometry, it is necessary to set the boundaries of waterlogged rock in a footprint map and in depth, and monitor pore pressure within this zone. To determine slope section with minimum safety factor it is necessary to carry out cyclic calculation with gradual reduction of approach and design section rotation increment.

scholarly journals Slope Stability Analysis for Proposed Footing Construction Seated on Sloppy Ground

2018 ◽  
Vol 7 (3.35) ◽  
pp. 30
Author(s):  
Tirumala Deepika ◽  
. .
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Slope Stability Analysis ◽  
Construction Site ◽  
Soil Slope ◽  
Slope Failures ◽  
Building Foundation ◽  
Homogeneous Soil ◽  
The Common ◽  
The Stability

Slope failures are one of the common phenomena in the Geotechnical failures. Thus it is needed to arrest the failure through proper mechanism.  Considering this as a scope the present study is oriented to address the analysis of sloppy site where the proposed building foundation to be constructed with different slopes as a natural construction site. The stability is checked and the anchors are used to improve the stability aspect of slope. The study found that the homogeneous soil slope is improved its safety under the usage of anchors.  

scholarly journals A Non-Linear, Time-Variant Approach to Simulate the Rainfall-Induced Slope Failure of an Unsaturated Soil Slope: A Case Study in Sapa, Vietnam

2021 ◽  
Vol 16 (4) ◽  
pp. 512-520
Author(s):  
The Viet Tran ◽  
Hoang Viet Hung ◽  
Huy Dung Pham ◽  
Go Sato ◽  
Hoang Hiep Vu ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Unsaturated Soil ◽  
Slope Failure ◽  
The United States ◽  
Slope Stability Analysis ◽  
Rainfall Infiltration ◽  
Landslide Event ◽  
Non Linear ◽  
The Stability

In this study, the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Analysis (TRIGRS), v2.1 program, and module SLOPE/W in the Geostudio package were adopted for assessing rainfall-induced slope failure. TRIGRS was developed by the United States Geological Survey to determine the time-varying groundwater table at the regional scale under rainfall infiltration. The program employs partial differential equations represented by one-dimensional vertical flow in homogeneous materials for unsaturated conditions. With the application of a simple runoff routing scheme combined with the mass balance between rainfall, infiltration, and runoff over the study area, the distribution of the transient pore-water pressures within the entire landscape was simulated considering both the surface and subsurface flow. Additionally, compared to the traditional two-dimensional approach, the topographical conditions were also considered during the groundwater simulation. For conducting the slope stability analysis, a typical cross-section was constructed based on the site description. The predicted water-tables at the observed time of failure of the typical section were extracted and used in SLOPE/W to conduct the time-dependent modelling of rainfall-induced slope failures. In this study, the non-linear method was employed for simulating unsaturated soil shear strength, and the stability of the slope was evaluated using Bishop’s simplified method. We applied the approach to the landslide event that occurred on August 5, 2019, in Sapa district, Lao Cai province, Vietnam. The event resulted in severe damage and blocked the road for days. The predicted results on the stability of the slope as the factor of safety were compared with the actual slope failure during the event. The results showed that, by inputting accurate data, the applied approach could provide valuable evidence about the time of the slope failure.

scholarly journals STUDY OF THE STABILITY CONDITIONS OF A HIGH CUT SLOPE ALONG EGNATIA HIGHWAY (ASPROVALTA - MACEDONIA)

2004 ◽  
Vol 36 (4) ◽  
pp. 1833
Author(s):  
Θ. Στιμάρατζης ◽  
Β. Χρηστάρας ◽  
Γ. Δημόπουλος ◽  
A. Κίλιας ◽  
M. Χατζηαγγέλου ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Geographical Information Systems ◽  
Soil Mechanics ◽  
Slope Stability Analysis ◽  
Geographical Information ◽  
Stability Conditions ◽  
Cut Slope ◽  
Topographic Map ◽  
The Stability

This study is about the stability conditions of a high cut slope as well as the possible measures of restoration, along the Egnatia Highway (deviation of Asprovalta). The study includes: the topographic map of the landslide and the 3-D view with the use of Geographical Information Systems, the analysis of geological and petrologie data from the samples of five core drillings, the soil mechanics laboratory tests, the determination of the causes and the landslide mechanisms and finally the slope stability analysis with «classic» methods such as Bishop, Janbu, Morgenstern-Price. A multiple repeated slope stability analysis took place in order to determinate the proper geometry (inclinations) of the slope with new benches. From the analysis of the data, the landslide restoration can be achieved with the combination of measures such as new benches geometry (proposed), surface drainage systems, retaining walls, soil nailing, geogrids and grass mat.

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