Probabilistic-numerical modeling of stability of a rock slope in Amasya-Turkey

Download

index.pdf

Date

2011

Author

Gheibie, Sohrab

Metadata

Show full item record

Item Usage Stats

251
views

177
downloads

Rock slope stability is considered as one of the most important fields in rock engineering. Developments of computation facilities and increase in application of sophisticated mathematical concepts in engineering problems have also affected the methods of slope stability analysis. In recent years, the numerical modeling methods have extensively applied instead of limit equilibrium methods. Also, the probabilistic methods are considered in rock slope designs to quantify the uncertainties of input effecting variables. In this research, a probabilistic-numerical approach was developed by integration of three dimensional Distinct Element Method (DEM) and probabilistic approach to analyze the stability of discontinuous rock slopes. Barton models have been used to model the behavior of rock discontinuities and the shear strain was considered as failure indicator of discontinuities. The proposed methodology was applied to a rock slope in Amasya, Turkey where the Joint Roughness Coefficient (JRC) was considered as the main random variable. The effect of basic friction angle and cohesion of joints infilling material and its strength reduction due to weathering were included in the analysis. In the slope the shearing behavior of fourteen discontinuities and the failure probability of each block were investigated, and the corresponding Reliability Index (β) was derived for each of the discontinuities.

Subject Keywords

Rock slopes., Rock mechanics., Rock excavation.

URI

http://etd.lib.metu.edu.tr/upload/12614101/index.pdf
https://hdl.handle.net/11511/21376

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A probabilistic model for the assessment of uncertainties in the shear strength of rock discontinuities DUZGUN, HSB; Yücemen, Mehmet Semih; Karpuz, Celal (Elsevier BV, 2002-09-01) Discontinuity shear strength plays a critical role in many problems encountered in rock engineering, especially in the design of rock slopes. Since its precise estimation is generally not possible, it is crucial that the errors and uncertainties associated with its estimate be quantified and reflected in the design procedure. In this study, the uncertainties underlying discontinuity shear strength are thoroughly examined and an uncertainty analysis model is developed for the estimation of in situ discontinu...
Deformation modulus of heavily jointed-sheared and blocky greywackes by pressuremeter tests: Numerical, experimental and empirical assessments IŞIK, Nihat Sinan; ULUSAY, REŞAT; Doyuran, Vedat (2008-10-17) Deformability of rock masses influencing their behavior is an important geomechanical property for the design of rock structures. Due to the difficulties in determining the deformability of jointed rock masses at the laboratory-scale, various in-situ test methods such as pressuremeter, dilatometer, plate loading tests etc. have been developed. Although these techniques are currently the best and direct methods, they are time-consuming and expensive, and present operational difficulties. In addition, the inf...
Fuzzy approach in preliminary design of weak rock slopes for lignite mines Yardımcı, Ahmet Güneş; Karpuz, Celal; Department of Mining Engineering (2013) Slope mass rating (SMR) system, which is an enhanced version of rock mass rating (RMR), is a useful tool to be utilized for the preliminary stability analysis of rock slopes. Parameter scoring systems of both conventional RMR and SMR systems are based on crisp set theory. Common problems of conventional classification systems are assigning sharp boundaries for ranges, the same values for both upper and lower limits of ranges and presence of uncertainties as a result of complex nature of rock. These problems...
Investigation of fracture toughness with four point bending loading on rectangular rock specimens Alkan, Uğur; Tutluoğlu, Levend; Department of Mining Engineering (2015) In rock engineering applications inherent cracks and other type of impurities are seldom under the effect of loads acting along principal directions. Dominant loading states mostly consist of mixed mode type of loads. Mode I loading state has been studied by researchers for a long time. Therefore, common principles have been established for mode I loading state. Shear type (mode II) loading state is still an active subject to investigate in fracture mechanics. Although, numerous test methods have been sugge...
Deep learning-based key-block classification framework for discontinuous rock slopes Zhu, Honghu; Azarafza, Mohammad; Akgün, Haluk (2022-08-01) © 2022 Institute of Rock and Soil Mechanics, Chinese Academy of SciencesThe key-blocks are the main reason accounting for structural failure in discontinuous rock slopes, and automated identification of these block types is critical for evaluating the stability conditions. This paper presents a classification framework to categorize rock blocks based on the principles of block theory. The deep convolutional neural network (CNN) procedure was utilized to analyze a total of 1240 high-resolution images from 13...

Citation Formats

S. Gheibie, “Probabilistic-numerical modeling of stability of a rock slope in Amasya-Turkey,” M.S. - Master of Science, Middle East Technical University, 2011.