Rock Mass Classification ScienceDirect

Quantitative rock mass classification systems are used with great benefit in many countries for some reasons As it provides better communication among geologists designers contractors and engineers therefore engineer s observations experience and judgment are correlated and consolidated more effectively by a quantitative classification system The classification

MECHANIZED EXCAVABILITY RATING FOR HARD ROCK MINING

After emphasizing the importance of quantitative rock mass classifications in mining originally directed to selec tion of rock support measures but subsequently to esti mates of rock mass properties such as rock mass strength and rock mass modulus of deformation current attention calls for a classification specifically for rock mass excavability by tunnel boring machines

IS 13365 1 Quantitative classification system of rock mass

02 09 2021 nbsp 0183 32 IS 13365 1 Quantitative classification system of rock mass Guidelines Part 1 RMR for predicting of engineering properties by Bureau of Indian Standards Publication date 1998 Name of Standards Organization Bureau of Indian Standards BIS Division Name Civil Engineering Section Name

Rock mass classification systems tu freiberg de

iii to provide a basis for understanding the characteristics of each rock mass class iv to derive quantitative data for engineering design v to recommend support guidelines for tunnels and mines Bieniawski 1989 1 Bieniawski 1993 27 Bieniawski 1989 1 Bieniawski 1993 27 Hoek 2007 720 Bieniawski 1989 1 Bieniawski 1993 27 Rock mass classification

Rock mass classification Rocscience Inc

Rock mass classification 3 Classifications involving stand up time Lauffer 195 8 proposed that the stand up time for an unsupported span is related to the quality of the rock mass in which the span is excavated In a tunnel the unsupported span is defined as the span of the tunnel or the distance between the face and the nearest support

Engineering Rock Mass Classification ScienceDirect

Engineering Rock Mass Classification Tunnelling Foundations and Landslides Book 2012 Browse book content About the book Search in this book Authors Bhawani Singh and R K Goel About the book Browse this book By table of contents Book description Rock mass classification methods are commonly used at the preliminary design stages of a construction

IS 13365 3 Quantitative classification system of rock mass

02 09 2021 nbsp 0183 32 IS 13365 3 Quantitative classification system of rock mass Guidelines Part 3 Determination of slope mass rating by Bureau of Indian Standards Publication date 1997 Name of Standards Organization Bureau of Indian Standards BIS Division Name Civil Engineering Section Name Rock Mechanics CED 48 Designator of Legally Binding Document IS

BIS IS 13365 PART 1 Quantitative classification system of rock

01 01 1998 nbsp 0183 32 Find the most up to date version of IS 13365 PART 1 at Engineering360

Chapter 6 Rock Mass Classification Part 2 pdf ROCK MASS

RMR classification guide for excavation and support in rock tunnels Tunnel shape horseshoe width 10m Vertical stress below 25MPa from Bieniawski 1989 Rock mass class Excavation by drill amp blast Rock support for 10m wide tunnels Rock bolts 20mm diam fully bonded Shotcrete Steel sets 1 Verygood rock RMR 81 100 Full face 3m advance Generally no

Rock mass classification for rock slope stability assessment in

The rock mass classification in particular the slope mass rating SMR continues to be the preferred preliminary method in small scale assessment of rock slope stability In Malaysia parameters related to rock slope stability assessment have been modified to consider the condition of the rock mass such as the effect of heterogeneous rock units and weathering of

Rock Mass Classification an overview ScienceDirect Topics

Engineering rock mass classification systems have been widely used with great success in Austria South Africa the United States Europe and India for the following reasons 1 They provide better communication between planners geologists designers contractors and engineers 2 An engineer s observations experience and judgment are correlated and

Lectures on Rock MechanicsLectures on Rock Mechanics

Quantitative Classification of Rock Mass Description of Joints Description of Joints Orientation Persistence Roughness Wall Strength Aperture Filling SeepageStrength Aperture Filling Seepage Number of sets Block size spacing ISRM i i tISRM commission s report Classification of Rock Material Based on Uniaxial Compressive Strength Uniaxial

Quantitative Classification of Rock Mass IIT Kanpur

PARAMETERS FOR THE Q Rating of Rock Masses Swelling clay lt 5 mm 12 Stiff clay infill gt 5 mm thickStiff clay infill gt 5 mm thick 10 1 RQD Rock Quality Designation sum of cored pieces Soft clay infill gt 5 mm thick 15 gt 100 mm long divided by total core run length Swelling clay gt 5 mm 20 2 Number of Sets of Discontinuities joint sets J n 5 Water Conditions

Quantitative Evaluation and Classification Method of the

13 11 2018 nbsp 0183 32 Quantitative Evaluation and Classification Method of the Cataclastic Texture Rock Mass Based on the Structural Plane Network Simulation Abstract The structural plane of a rock mass is the indispensable premise for studying and understanding cataclastic Introduction A rock mass is a

Engineering Rock Mass Classification Tunnelling Foundations

IS 13365 1 1998 Quantitative classification system of techniques for rock bolting and multi anchorage systems and partly from reinforced fill technique Clouterre 1991 FHWA 1998 The New Austrian Tunnelling Method introduced in the early 1960s was the premier prototype to use steel bars and shotcrete to reinforce the ground With the increasing use of the technique

PDF A geomechanics classification system for the rating of rock mass

01 10 1990 nbsp 0183 32 A quantitative correlation between the mining rock mass rating and in situ rock mass rating classification systems G Dyke Geology 2008 The three most common rock mass classification systems in use in the South African mining industry today are Bieniawski s 1976 Geomechanics or RMR System Barton et al s 1974 Q System and Expand 3

Chapter 6 Rock Mass Classification Part 1 pdf Rock Mass

Empirical Classification Methods Generally rock mass classification yields the following information for ground control application in mining To classify a particular rock mass into groups on the basis of similar behavior To provide a basis for determining physical and mechanical behavior of each group To obtain quantitative data for the ground control

Chapter 6 Rock Mass Classification Part 1 pdf Rock

Empirical Classification Methods Generally rock mass classification yields the following information for ground control application in mining To classify a particular rock mass into groups on the basis of similar behavior To provide a basis for determining physical and mechanical behavior of each group To obtain quantitative data for the ground control

PDF Suggested methods for the quantitative description of

Discontinuities as major rock mass features are most widely used in rock mass classification systems such as rock mass rating RMR 4 rock mass index RMi 5 and blastability index BI 6 7

Quantitative classification system of rock mass Guidelines

Quantitative classification system of rock mass Guidelines Part 1 RMR for predicting of engineering properties 1998 BIS

Bieniawski Engineering rock mass clasification pdf VSIP INFO

Divide a particular rock mass fonnation into groups of similar behavior that is rock mass classes of varying quality 3 Provide a basis for u nderstanding the characteristics of each rock mass class 4 Relate the experience of rock conditions at one site to the conditions and experience encountered at others 5 Derive quantitative data and guidelines for engineering

IS 13365 2 1992 Quantitative classification systems of rock mass

continuities in rock mass Part 11 Core recovery and rock quality is necessary adjunct to this standard 3 PROCEDURE 3 1 Determination of the Rock Mass Quality Q The rock mass quality Q shall be defined by the following equation Rock Mass Quality Q RQD Jn Jr Ja

Quantitative Classification of Rock Mass sarv New

31 01 2018 nbsp 0183 32 Quantitative Classification of Rock Mass sarv New Folder Presentation 4 pdf 183 Quantitative Date post 31 Jan 2018 Category Documents View 213 times Download 0 times Download for free Report this document Share this document with a friend Transcript Quantitative Classification of Rock MMass Description of Joints Description of

Rock Mass Classification SlideShare

22 12 2013 nbsp 0183 32 Q value The Q system for rock mass classification is developed by Barton Lien and lunde It expresses the quality of rock mass on which the design and support recommendations are based for the underground excavations The Q value is determined by the following formula Q RQD Jn x Jr Ja x Jw SRF 43

Slope Mass Rating SMR Geomechanics Classification Thirty Years

10 05 2015 nbsp 0183 32 Rock mass classifications are a universal communication system for engineers which provide quantitative data and guidelines for engineering purposes that can improve originally abstract descriptions of rock mass from inherent and structural parameters Pantelidis 2009 by simple arithmetic algorithms The main advantage of rock mass classifications is

IS 13365 3 Quantitative classification system of rock

Section Name Rock Mechanics CED 48 Designator of Legally Binding Document IS 13365 3 Title of Legally Binding Document Quantitative classification system of rock mass Guidelines Part 3 Determination of slope mass rating Number of Amendments Equivalence Superceding Superceded by LEGALLY BINDING DOCUMENT

Rock Mass Classification an overview ScienceDirect Topics

30 07 2019 nbsp 0183 32 Q12 8 A rock mass classification system is required for assessing the suitability of different rock formations for storing compressed domestic gas in unlined rock caverns along the route of a main gas transmission line List the rock parameters that you would use in a rock mass rock engineering classification scheme for this objective A12 8 The principal rock

IS 13365 1 1998 Quantitative classification system of rock mass

QUANTITATIVE CLASSIFICATION SYSTEMS OFROCK MASS GUIDELINES PART 1 ROCK MASS RATING RIA quot FOR PREDICnNG ENGINEERING PROPERTIES 1 SCOPE This standard Part 1 covers the procedure for determining the class of rock mass based on geomechanics classification system which is also called the Rock Mass Rating RMR system The

Study of rock mass classification system OnlineEngineeringNotes

07 04 2021 nbsp 0183 32 Rock mass classification system Different rock mass classification system has been established till now by different researcher The rock mass classification helps to improve the quality of site investigation by providing quantitative information for design purpose It is also used to determine the strength of rock and help to

Engineering Classification of Jointed Rock Mass Based on Hindawi

Early methods mostly focused on qualitative or quantitative evaluation of a single index such as former Soviet Union Ф М Садренски classification 1937 H Н Масло classification 1941 Terzaghi classification the dam foundation rock mass classification proposed by the former Soviet Union concrete gravity dam design specification and the RQD classification