rock slope stability calculation in limestones

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Slope Stability Project: MITS194

stability of all natural and man-made earth or rock slopes (e.g., cuts, fills, embankments, dams) for which failure under any of the conditions to which they may be exposed during the life of the plant could adversely affect the safety of the nuclear power plant facilities.

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Rock Slope Stability Assessment of Limestone Quarry; An ...

Jan 04, 2015· The aim of this study is to investigate slope stability problems for heavily jointed karstic limestones in an aggregate quarry. Limestone quarries have turned into steep cliffs of bare rocks which threaten the safety of construction and have also negative influence on the aesthetics in the Cebeci Region.

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CHAPTER 15

CHAPTER 15 Rock Slope Design NYSDOT Geotechnical Page 15-5 January 14, 2015 Design Manual The detailed requirements for the design of rock cuts are provided in FHWA-HI-99-007, Rock Slopes Reference Manual, publication dated …

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The assessment of slope stability and rock excavatability ...

The aim of this study is to evaluate the stability and excavatability of newly stripped rock slopes (slope 1 (SN–1), slope 2 (SN–2), and slope 3 (SN–3)) in a limestone quarry. These are new pro duction sites with comparable geological formations along the southern part of the quarry where three planar failures were previously observed.

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The assessment of slope stability and rock excavatability ...

The slope stability analysis of rocks is vital for designing safe slopes in open–pit mines. A proper slope design not only leads to improvements in slope stability and safety but also reduces costs, extends the life of mines and decreases the stripping ratio (Bye and Bell, 2001, Naghadehi et …

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Governing factors influence on rock slope stability ...

Oct 01, 2019· Rock slopes fail by different modes of failures, these are plane, wedge, toppling and rock fall (Hoek and Bray, 1981, Hocking, 1976).The most common type of failure in rock slopes is plane mode of failure (Raghuvanshi, 2019).The stability of the slope, having potential plane mode of failure, depends on governing factors namely; slope inclination (α f), upper …

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SLOPE STABILITY ASPECTS AND PROTECTIVE TECHNIQUES ...

Symbol Parameter Dimensions F Factor of safety against sliding along sheet joint Calculated H Height of the overall slope or of each bench 60 m or 20 m respectively ςf Angle of slope face, measured from horizontal 50 ςp Angle of failure surface, measured from horizontal 35 z Depth of tension crack Calculated (m) zw Depth of water in tension crack or on failure surface Variable (m)

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Rock slope discontinuity extraction and stability analysis ...

Rock slope stability is clearly controlled by several rock parameters as rock strength, discontinuity orientation and dip, persistence, etc. Some of these parameters were recently successfully derived from Terrestrial Laser Scanner (TLS) point clouds. Some approaches calculate the orientation for each node in

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Stability Analysis of Rock Slope Based on Improved ...

Slope stability is affected by many uncertain factors, such as natural and human factors, and there isacomplexnonlin-ear relationship between them. How to establish an accurate rock slope stability evaluation model considering multiple factors has always been the focus of engineering [3–8]. At present, the research on slope stability mainly ...

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SLOPE FACE STABILIZATION FOR CRITICAL SLOPE …

Slope stability, or the lack thereof, rests upon the ability of a slope to resist stress excess to what is normally acceptable for the material property of the soil or rock inherent to the construction slope. Slope movements, such as translational or rotational slope failures occur when sheer stress exceeds sheer

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Rock Slope Stability Analysis – Utilization of Advanced ...

stability of a given slope, assessing its risk, potential failure mechanisms and velocities, areas endangered, and possible remedial measures. These lecture notes introduces the field of rock slope stability analysis and the purpose such analyses serve in the investigation of potential slope failure mechanisms. Advancements in and

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Phreatic Line Calculation and Stability Analysis of Slopes

an integral method for the analysis of slope stability under hydrodynamic forces is proposed. Finally, by applying all the methods on a typical ancient landslide in Three Gorges Reservoir area, the evolution of the slope stability under rainfall and reservoir water level fluctuations is studied. Calculation of groundwater phreatic line of slope

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SLOPE STABILITY - KSU

Why do we need slope stability? In geotechnical engineering, the topic stability of slopes deals with: 1.The engineering design of slopes of man-made slopes in advance (a) Earth dams and embankments, (b) Excavated slopes, (c) Deep-seated failure of foundations and retaining walls. 2.

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Slope stability and rockfall assessment of volcanic tuffs ...

586 Á. Török et al.: Slope stability and rockfall assessment of volcanic tuffs Figure 3. Location of the illustrations in the paper and the rockfall-affected area. Red dotted and dashed line represents zones affected by rockfall. Yellow dashed lines 1 to 5 mark the sections where slope stability was calculated by using 2-D FEM model (Fig. 8).

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Slope Stability Analysis for the Design of a New Lignite ...

Jun 20, 2017· In the paper slope stability analyses for the design of a new mine in Zloczew are described. The preliminary design project of this mine was realized in 2014 by Poltegor-Institute [2]. The exploitation of lignite layers in a deep tectonic rift will require mining of large volume of limestone and marl rocks located on the south slope.

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PRELIMINARY GEOMECHANICAL ANALYSIS ON LIMESTONES …

The rock hardness level is dominated by hard rock with a hardness ranging from 50-100 MPa. Rock Mass Rating shows that the area is dominated by good rocks. While the Slope Mass Rating calculation show that the maximum slope angle is between 52-75°. Level of deformation and intensive weathering

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(PDF) SENSITIVITY ANALYSIS AND SLOPE STABILITY RISK OF ...

The following is the determination of slope safety factors on slope landslide conditions using slide 6.0 software: Gambar 13 FK and PK results on the slope area that are still stable The results of the calculation of the Security Factor value in software slide 6.0 by using the Simplified Janbu method of 0.590 and the potential slide of 87.821%.

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The Effect of Scale and Criticality in Rock Slope Stability

Rock Mech. Rock Engng. (2004) 37 (2), 117–126 DOI 10.1007/s00603-003-0004-1 The Effect of Scale and Criticality in Rock Slope Stability By M. Borri-Brunetto, A. Carpinteri, and B. Chiaia Department of Structural and Geotechnical Engineering, Politecnico di Torino, Torino, Italy Received December 1, 2002; accepted May 20, 2003

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Rock Slope Design Guide - transportation.ohio.gov

The remainder of this discussion is summarized from the SGE and the FHWA Rock Slopes Reference Manual; Report Number FHWA-HI-99-007 (1998) which discusses geologic terms related to rock slope stability. 202.1 Rock Type. The rock type is defined by the origin of the rock, which in Ohio is predominantly sedimentary.

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The role of a bentonitic layer on slope stability in ...

Under such conditions, the slope stability back-analysis was performed by the limit equilibrium method, considering a planar rock slope failure with tension cracks and with different water level heights. The results show that a small increase of water pressure was sufficient to exceed the factor of safety.

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RIP-RAP

s = stability coefficient for incipient failure 0.3 for angular rock C v = vertical velocity distribution coefficient 1.0 for straight channels, inside bends 1.283 – 0.2 log (R/W), outside bends C t = thickness coefficient 1.0 for 1*D 100 or 1.5*D 50

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Static and Dynamic Stability of Jointed Rock Slope ...

The Static and dynamic rock slope stability analyses of the left and right abutments of the proposed Anjikhad (J & K, India) railway bridge were performed using the distinct element code UDEC for a 189 m high rock slope. The analyses have been carried out in three stages for predicting the behaviour of the rock slope. First, an initial static

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The assessment of slope stability and rock excavatability ...

Dec 01, 2013· Introduction The slope stability analysis of rocks is vital for designing safe slopes in open-pit mines. A proper slope design not only leads to improvements in slope stability and safety but also reduces costs, extends the life of mines and decreases the stripping ratio (Bye and Bell, 2001, Naghadehi et al., 2011).

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Slope Stability Reference Guide

slope, rock, soil, and drainage characteristics and geologic processes. These analyses are often completed using slope stability charts and the DSARA (Deterministic Stability Analysis for Road Access) slope stability program. The probabalistic SARA (Stability Analysis for Road Access) program is still under development.

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Stability Analysis of Rock Slopes using the Finite Element ...

4. Calculation of deformations at slope stress levels, and 5. Robustness – ability to perform successfully under a wide range of conditions. The factor of safety, F, in FE slope stability analysis (Duncan, 1996) is defined as Shear strength of material (soil or rock) F Shear strength required for equilibrium t t * == (1)

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Rock Slope Stability Analysis along NH-22 in Luhri Area ...

Rock Slope Stability Analysis along NH-22 in Luhri Area, Himachal Pradesh- A Case Study 697 along the road was taken into account dominated by quartz mica schist and limestone for stability evaluation. Figures 3a, b exhibits the slope with 495 m height having two benches of quartz mica schist and slope angle varying from

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Kinematic Analysis and Rock Mass Classifications for Rock ...

slope stability analysis is of great concern. This research aimed to determine the typologies of rock slope failures and to study the rock mass qualityto calculate the stability of rock slope. This rock quality data and kinematic analysis are the crucial parameters in rock slope engineering design and rock slope stability.

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7.9 Design Guidelines – Rock Riprap 7.9.1 Rock Riprap

7.9.2 Bank Slope A primary consideration in the design of stable riprap bank protection schemes is the slope of the channel bank. For riprap installations, normally the maximum recommended face slope is 1V:2H. 7.9.3 Rock Size The stability of a particular riprap particle is a function of its size, expressed either in terms of its

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Lecture 12: Slope Stability

Lecture 12: Slope Stability . Key Questions. 1. How do "friction" and "cohesion" work together to stabilize slopes? 2. What is trying to "pull" slope material down? 3. How does the slope angle play a role in slope stability? 4. What is the "factor of safety" equation? ... Broken rock = 0.5 to 0.9. Note: the Greek symbol μ (mu ...

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Characterization of rock slopes through slope mass rating ...

Apr 01, 2016· Rock mass classification systems are widely used tools for assessing the stability of rock slopes. Their calculation requires the prior quantification of several parameters during conventional fieldwork campaigns, such as the orientation of the discontinuity sets, the main properties of the existing discontinuities and the geo-mechanical characterization of the intact …

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Concepts Used to Analyze and Determine Rock Slope ...

Abstract Slope stability plays an important role in rock engineering. During the design, construction and post design phases of rock slope stability, engineers and geologists need to pay close attention to the rock conditions within the rock slope to prevent slope failures, protect employees and maintain economic profit.

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(PDF) Rock Slope Stability Assessment of Limestone Hills ...

Serasa, Norbert Simon, Noraini Surip, Lee Khai Ern and Tuan Rusli Mohamed (2017) Rock Slope Stability Assessment of Limestone Hills, Southern Kinta Valley, Ipoh, Perak, Malaysia . Geological ...

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Slope Stability Hazard Assessment and Mitigation ...

the ongoing slope instability present in some areas, including planar and wedge slides and raveling rock falls. It was found that the unstable rock areas create serious safety hazards to traffic. Keywords: Slope stability, Highway slopes, Rockfall, Slope hazards, Egypt.

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Study of Numerical Modelling of a Rock Slope Based on ...

The stability evaluation of natural rock slope is essential especially when the slopes are ... technique along with the FEM to calculate factors of safety for slopes. Various finite element packages were developed and used for slope stability analysis. ... limestones containing pockets of magnesite. Fig. 1 - Profile of the slope section ...

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PRELIMINARY GEOMECHANICAL ANALYSIS ON LIMESTONES IN …

Based on field observations, the slope angle in the area is dominated by steep slopes. The rock hardness level is dominated by hard rock with a hardness ranging from 50-100 MPa. Rock Mass Rating shows that the are a is dominated by good rocks. While the S lope Mass Rating calculation show that the maximum slope angle is between 52-75 ° .

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Estimation of rock mass mechanical parameters of an open ...

therefore, slope stability associated with open-pit mining has become a serious issue threatening the entire mining area (Hakan et al., 2013). The issue of slope stability in open-pit mining substantially concerns the selection of mechanical parameters of slope rock mass, but the inhomogeneity and

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