scholarly journals Kinematic and Rock Mass Classification Assessment of Road Cut Slopes along with Karakoram Highway in Northern, Pakistan

2021 ◽  
Author(s):  
Asif Razzaak ◽  
Tang Huiming ◽  
Ijaz Ahmed ◽  
Lei Huang
Keyword(s):  
Slope Stability ◽  
Mass Movement ◽  
Seismic Zone ◽  
Snow Melting ◽  
Wedge Failure ◽  
Discontinuity Sets ◽  
Stable Conditions ◽  
Karakoram Highway ◽  
Cut Slopes ◽  
Road Cut Slopes

Karakoram highway (K.K.H.) the only road link between two countries China and Pakistan. This road network is essential for two countries due to its strategic location and socioeconomic. The highway is more vulnerable due to landslide disasters, especially in rain and snow melting seasons, and different kinds of mass movement activities have occurred along K.K.H., such as rockfall, debris flow, and snow avalanche. The slope stability problems are widespread along with Karakorum (K.K.H.) between Besham city and the Dasu area because of the high seismic zone, rainfall, snow melting, and complex geology slope geometry, week, and adverse discontinuities sets. The detailed fieldwork was done along the Karakorum highway to minimize the risk of slope stability and for planning purposes in Besham to Dasu area and selected nine road-cut slopes. However, in these nine selected roadcut slopes, three slopes were already failed, four slopes are partially stable, and two slopes were stable. Both kinematic and empirical approaches are applied on all these nine road cut slopes and their discontinuities. The kinematic result has shown that all kinds of mode failure such as Toppling, Planar, and Wedge failure mode occurred in these slopes. The RMRb result has shown that all discounters lie in between fair to good rock. Both discrete and continuous (S.M.R.) results show that all discontinuity sets lie between the unstable, partially stable, and stable conditions.

Stability Assessment of Ukhrul-Jessami Road Cut Slopes, Ukhrul District, Manipur

2021 ◽  
Vol 97 (7) ◽  
pp. 744-750
Author(s):  
H. Bidyashwari ◽  
M. Okendro ◽  
R. A. S. Kushwaha ◽  
M. Chandra
Keyword(s):  
Stability Assessment ◽  
Cut Slopes ◽  
Road Cut Slopes

scholarly journals Assessment of Slope Instability and Risk Analysis of Road Cut Slopes in Lashotor Pass, Iran

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Mohammad Hossein Taherynia ◽  
Mojtaba Mohammadi ◽  
Rasoul Ajalloeian
Keyword(s):  
Rock Mass ◽  
Risk Analysis ◽  
Rock Slope ◽  
Classification Systems ◽  
Slope Instability ◽  
Rock Slope Stability ◽  
Rock Slopes ◽  
The Stability ◽  
Cut Slopes ◽  
Road Cut Slopes

Assessment of the stability of natural and artificial rock slopes is an important topic in the rock mechanics sciences. One of the most widely used methods for this purpose is the classification of the slope rock mass. In the recent decades, several rock slope classification systems are presented by many researchers. Each one of these rock mass classification systems uses different parameters and rating systems. These differences are due to the diversity of affecting parameters and the degree of influence on the rock slope stability. Another important point in rock slope stability is appraisal hazard and risk analysis. In the risk analysis, the degree of danger of rock slope instability is determined. The Lashotor pass is located in the Shiraz-Isfahan highway in Iran. Field surveys indicate that there are high potentialities of instability in the road cut slopes of the Lashotor pass. In the current paper, the stability of the rock slopes in the Lashotor pass is studied comprehensively with different classification methods. For risk analyses, we estimated dangerous area by use of the RocFall software. Furthermore, the dangers of falling rocks for the vehicles passing the Lashotor pass are estimated according to rockfall hazard rating system.

Les éperons drainants dans les talus en déblai–présentation d'abaques de dimensionnement sur critères hydrauliques et mécaniques

1987 ◽  
Vol 24 (4) ◽  
pp. 590-600 ◽  
Author(s):  
P. Aigle ◽  
F. Desnouvaux ◽  
J. P. Prost
Keyword(s):  
Free Surface ◽  
Slope Stability ◽  
Experimental Research ◽  
Three Dimensional ◽  
Drainage Ditch ◽  
Analog Model ◽  
Design Charts ◽  
Present Design ◽  
Operating Instructions ◽  
Cut Slopes

The object of this article is to present design charts that facilitate the design of a series of parallel drainage spurs in association with a drainage ditch used in cut slopes. The hypotheses, the operating instructions, and the field of utilization are fully detailed.The two needed dimensions are the depth and spacing of the drainage spurs.The design charts are of two main types:–simple dimensioning charts: providing information on possible combinations of depth and spacing that give the quantitative effect wished by the designer, such as lowering the level of the water table or increasing the safety factor;–optimization charts: proposing an estimation of the solution that minimizes the depth of the spurs per linear metre of slope, and subsequently the volume of the draining material.This article results from theoretical and experimental research carried out over several years. We have been using a composite analog model that allows the simulation of free-surface three-dimensional flows. Key words: drainage, cut slopes, slope stability, drainage spur, analog model, three-dimensional.

Fracturing within anticlines and its kinematic control on slope stability

2002 ◽  
Vol 8 (1) ◽  
pp. 19-33 ◽  
Author(s):  
Thomas C. Badger
Keyword(s):  
Slope Stability ◽  
Ground Water ◽  
Slope Failure ◽  
Mode I ◽  
Mode Ii ◽  
Shear Stresses ◽  
Fold Axis ◽  
Slope Failures ◽  
Kinematic Control ◽  
Discontinuity Sets

Abstract Anticlinal folding generates both bedding-parallel shear stresses and tensional stresses radial to the fold axis. These stresses typically produce two sets of discontinuities. Discontinuity set S 1 forms coincident with bedding (S 0 ) as a mode II fracture, and discontinuity set S 2 forms perpendicular to bedding and strikes parallel to the fold axis as a mode I fracture. For slopes that strike parallel to the fold axis, these two discontinuity sets may produce three structurally-controlled modes of slope failure. For slopes that are coincident with bedding, planar failures along S 0 /S 1 commonly occur and can be very large. Where bedding dips favorably into the slope, failures along joint set S 2 and across bedding can occur. Toppling failures are common to both of these slope configurations, along S 2 and S 0 /S 1 , respectively. Lastly, flat or shallow dipping S 0 /S 1 fractures, even those favorably oriented, and intersecting S 2 joints define blocks that can be mobilized by high ground-water pressures. An example is presented for each slope configuration to illustrate these kinematic controls on slope stability.

scholarly journals Empirical and finite element based stability analysis of highway cut slopes in Uttarakhand Himalayan terrain, India

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Hari Om Singh ◽  
Tariq Anwar Ansari ◽  
T. N. Singh ◽  
K. H. Singh
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Rock Mass ◽  
Stability Analysis ◽  
Slope Stability ◽  
Kinematic Analysis ◽  
Empirical Methods ◽  
Geotechnical Data ◽  
Cut Slopes

AbstractThe present paper deals with different empirical methods and finite element method of slope stability analysis along National Highway (NH)-7, in Uttarakhand, India. The highway is only path in the hilly terrain of Lesser Himalayan for the public transport and have strategic importance due to militaries possession routes. This route is also significant due to having many holistic places, connecting to this. There was numerous landslides happened along the Highway in past due to various natural and anthropogenic activities. Hence, keeping an eye to the socio-economic development of the distant area, slope stability analysis is very crucial along the road cut sections. To identify the vulnerable locations and to collect the geotechnical data, the field investigation was carried out between Shivpuri to Byasi along NH-7 in Garhwal, Uttarakhand. Then geotechnical data was intended followed by rock mass characteristic, kinematic analysis and Qslope stability. Additionally, to review the stability results, numerical simulation (finite element method) was employed and slope mass behavior and failure mechanism of cut slopes were also evaluated. The rock mass characteristic and kinematic analysis illustrate normal and good variety of rock mass mainly wedge mode with flexural toppling of failure. The slope mass rating, continuous slope mass rating and also Qslope stability analysis showed, road cut slopes are critically stable and unstable. The results of different empirical methods shows a decent correlation between them. Further the numerical simulation analysis also evaluates that two cut slopes are unstable and other one is critically stable. This substantial empirical and numerical analysis of cut slopes provides a collective approach to stable and develop the holistic road corridor in Himalayan terrain.

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