Slope stability accidents are one of the leading causes of fatalities at u. It took a year to complete this project but would have taken much less time if it wernt for other modules that needed to be completed. Typical rock slope failures after kliche 1999 there are four general modes of slope failure. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Rock slope stability analysis a variety of engineering activities require excavation of rock cuts. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology.
Benjamin paul geological engineering investigation of roc. In this paper a numerical analysis of slope stability problems in blocky rock is presented with emphasis given to the various possible failure modes block sliding andor block tilting. In civil engineering, projects include transportation systems such as highways and railways, dams for power production and. The term landslide refers to a situation of instability affecting natural slopes and involving large volumes of soil. How do friction and cohesion work together to stabilize slopes. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the stability of earth and rockfill dams, embankments. Rules of thumb and easy method of estimating slope stability geology and soils information needed from site or soils database check appropriate loading conditions seeps, rapid drawdown, fluctuating water levels, flows select values to input for.
Rock slope stability and the design of the appropriate slope angle. University of east london, 3rd year disseration project on the rock slope stability of cliff end, hastings. Assessment of the stability of rock slopes by the slope. The objective of the analysis was to evaluate and judge the condition and overall stability of the exposed rock, and identify where. Rock slope stability analysis utilization of advanced. Rock slope stability and the design of the appropriate slope angle are extremely important for surface mining in these difficult economic times. Detailed pieziometric data at multiple locations and depths within and. Whether youre involved in surface mine design or production, construction, education, or regulation, this is an important new book for your library.
Kliche, 9780873353694, available at book depository with free delivery worldwide. Rock slope stability kliche 1999 free download as pdf file. Pdf stability analysis of a rock slope in himalayas. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. We illustrate the merits of the suggested approach on an example of a 10 m homogeneous rock slope with a 35. Slope stability hazard assessment and mitigation 167 presence of these filled sinkholes during excavation, have an adverse effect on the slope stability. A slope stability problem in hong kong introduction. Erik eberhardt university of british columbia geological engineeringearth and ocean sciences, ubc, 6339 stores rd. Stability analysis of a rock slope in himalayas article pdf available in geomechanics and engineering 22 june 2010 with 2,238 reads how we measure reads. Rock slope stability charles a kliche whether youre involved in surface mine design, surface mine production, construction, education, or regulation, this is an important book for your library. During blasting the explosion gases will force their way out of the rock mass via the karstic discontinuities rather than by breaking intact rock or by following discontinuities to the next.
In kliches publication titled rock slope stability, robotic total stations and prisms for the monitoring of slope movement is addressed. They are certainly major factors in cut slope stability and in. Probabilistic approach for open pit bench slope stability. In addition to the socalled modified geological strength index, the proposed system considers five additional parameters whose relative effects on the stability of fractured rock slopes were. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement.
The effect of spacing of rock bolts on the stability of. At this scale, the rock slope stability is governed primarily by the geological discontinuities within the rock mass and as a result, structurallycontrolled failures e. Main termsvector search result for toppling failure 1. The slope, which has a height of 10 m, is assumed loaded under gravity with a horizontal to vertical stress ratio of 1. Pdf study of effect of bolt anchorage parameters on rock slope. Kliche 1999 defined slope stability as the resistance of any inclined surface, as the wall of an open pit or cut, to failure by sliding or collapsing.
The research work assessed the stability of rock slopes for optimum exploitation of limestone deposits at obajana in kogi state and ewekoro in ogun state. Given the lack of suitable systems in the characterization of slope stability of heavily jointed rock masses, a new rock mass classification system called slope stability rating ssr is proposed. Fhwa nhi06088 6 slope stability soils and foundations volume i 6 3 december 2006 6. Slide 23 freezethaw and icewedging may have been a contributing factor in this previous rockslide, reactivated on dec. These analyses are often completed using slope stability charts and the dsara deterministic stability analysis for road access slope stability program. Chapters include geotechnical and geomechanical analysis techniques. The assessment of slope stability and rock excavatability. The design of too flat of a highwall angle means considerable additional mining costs. Rock slope engineering civil engineering i am menglim. Pdf on mar 19, 20, gaurav tiwari and others published study of effect of bolt anchorage parameters on rock.
Slope stability evaluation is executed to assess the. The geological engineering investigation of rock slopes are a very important fact for the. This chapter deals with rock slope stability, a subject that has shown remarkable development in the last twenty years relative to methods for estimating shear strength of rock discontihuities and methods of analysis. Chapter 10 slope stability analysis nysdot geotechnical page 106 january 21, 2014 design manual 10.
It describes the basic rock slope failure modes and methods of analysisboth kinematic and kinetic techniques. The assessment of slope stability and rock excavatability in a. This book focuses on rock slope stability, with sections on geological data collection, geotechnical data collection and analysis, surface water and groundwater effects, kinematic and kinetic stability analysis, rock slope stabilization techniques, and rock slope instrumentation and monitoring. The stability of rock slopes is controlled by the joint sets, characteristics of joint surface, and depth and steepness of the excavated slope face and its orientation with respect to the joint sets.
How does the slope angle play a role in slope stability. Rock slope stability and the design of the appropriate slope angle is extremely important for surface mining in these difficult economic times. Pdf rock slope stability assessment by using kinematic analysis. Allot of hard work and perseverance went into this. Rock slope stability analysis utilization of advanced numerical techniques dr. The stability of this particular slope was critical because it. 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.
The term slope means a portion of the natural slope whose original profile has been modified by artificial interventions relevant with respect to stability. The fracture process when cutting inhomogeneous rocks 15. The slope stability analysis of rocks is vital for designing safe slopes in openpit mines. Stability analysis of rock slopes using the finite element. The probabalistic sara stability analysis for road access program is still under development. The aim of this study is to evaluate the stability and excavatability of newly stripped rock slopes slope 1 sn1, slope 2 sn2, and slope 3 sn3 in a limestone quarry. Slope design is concerned with the stability of unstable blocks of rock formed by joint sets. These are new pro duction sites with comparable geological formations along the southern part of the quarry where three planar failures were previously observed.
Rock slope stability analysis hardcover january 1, 1992 by gian paolo giani author see all formats and editions hide other formats and editions. Slope failure develops when the slope stress exceeds the slope strength. A comprehensive guide for mining and construction engineers responsible for rock slope stability. Study of effect of bolt anchorage parameters on rock slope stability by. Pdf rock slope stability assessment by using kinematic. The rock materials forming a pit slope determines the rock mass strength modified by discontinuities, faulting, folding, old workings and weathering. The orientation data obtained were plotted on stereonets to determine pole concentration and major joint sets using dips 5. The ncgs is mapping bedrock and collecting rock slope stability data along the north carolina segment of the brp as part of a geologic inventory of the brp funded by the national park service. Rock slope stability analysis lec 1 linkedin slideshare. The effect of length of rock bolts on the stability of. The generalized hoekbrown parameters of the slope rock mass are provided in table 1. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of.
In order to analyse discontinuity data we used georient program which is a stereographic plot. This book focuses on rock slope stability, with sections on geological data collection. Geological mapping was carried out to measure the orientations of discontinuities. Rock slope stability download ebook pdf, epub, tuebl, mobi. Slope stability analysis geotechnical design manual m 4603 chapter 74 december 2006 slope stability analysis detailed assessment of the groundwater regime within and beneath the slope is also critical. Kliche, rock slope stability, sme, the society for mining, metallurgy, and. The design engineer and the regulator must be familiar with the concepts to choose the best design at the lowest cost. Charles kliche, society for mining, metallurgy, and exploration, inc sme. Pdf on jan 1, 2011, alavi nezhad khalil s v abad and others published rock slope stability assessment by using kinematic analysis and slope mass rating at bandar seri alam, johor find, read. Numerical methods have become very popular in recent years for stability analysis of rock slopes. Slope stability analysis wikimili, the best wikipedia reader. This engineer manual em provides guidance for analyzing the static stability of slopes of earth and rock fill dams, slopes of other types of embankments, excavated slopes, and natural slopes in soil and soft rock. Low rock mass strength is characterized by circular raveling and rock fall instability like the formation of slope in massive sandstone restrict stability. Rock slope stability of cliff end fault geology geology.
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