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  1. rockmass.net › files › short_on_Q-systemShort on the Q-system - RockMass

    It is a quantitative classification system for estimates of tunnel support, based on a numerical assessment of the rock mass quality using the following six parameters: Rock quality designation (RQD). Number of joint sets (Jn). Roughness of the most unfavourable joint or discontinuity (Jr).

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  2. www.rocscience.com › assets › resourcesHoek, E., Carter, T.G., Diederichs, M.S. Quantification of ...

    As part of an ongoing evaluation of the uses and abuses of the Hoek-Brown and Geological Strength Index systems for estimating the mechanical properties of rock masses, the issue of quantifying GSI has been given priority.

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  3. www.guidedolomiti.com › en › rock-climbing-gradesRock climbing grades and conversions. The 5 most used systems.

    • Different Rock Climbing Grades Across The Five Most Popular Systems
    • Rock Climbing Grades
    • Bouldering
    • The Evolution of Rock Climbing Grades: from 6A to 9C

    There are a variety of different systems used around the world to define rock climbs grades. Below you will find a table that compares the different climbing grades across the five most popular systems. In addition, the skill level of the climber has also been included. The difficulties are listed in increasing order of difficulty.

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    Climbers mainly use two rating systems for rope climbing, according to geographical location: FRENCH scale and YDS. Speaking about rock climbing grades, there are not only the systems listed above but also other difficulty rating systems. For example: South Africa, Brazil, Finnish, Swedish. Click on this link to see other systemsfor measuring diffi...

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    Bouldering is a simplified and often “social” version of rope climbing. In fact, in this case no rope and harness are used, because it climbs extremely difficult short routes (also known as problems). The heights are limited, so you climb not too far from the ground. Bouldering is a great way to increase your confidence and technique, and it’s a lo...

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    Let’s now see how climbing has evolved over time. The following is the result of careful research conducted by two well-known names in the climbing community: Maurizio Oviglia and Claude Remy. My thanks go to them and to PlanetMountain, which once published an article dedicated to the evolution of free climbing, for allowing me to publish this inte...

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  4. web.mst.edu › ~rogersda › umrcoursesRock Mass Rating - Missouri University of Science and Technology

    The following six parameters are used to classify a rock mass using the RMR system: 1. Uniaxial compressive strength of rock material. 2. Rock Quality Designation (RQD). 3. Spacing of discontinuities. 4. Condition of discontinuities. 5. Groundwater conditions. 6. Orientation of discontinuities.

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  5. en.wikipedia.org › wiki › Slope_mass_ratingSlope mass rating - Wikipedia

    Scores typically range from 0 to 100, with 100 being the most competent rock mass. The term rock mass incorporates the influence of both intact material and discontinuities on the overall strength and behavior of a discontinuous rock medium.

  6. www.physicsandmathstutor.com › download › GeographyE d e x c e l G e o g r a p h y G C S E The UK’s Physical ...

    The UK has a v a r i e d l a n d s c a p e which changes in height and shape greatly. This section explains how the g e o l o g y of the rocks will determine the landscape.

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  8. www.diva-portal.org › smash › getEvaluation of rock mass strength criteria - DiVA

    criteria complies with the requirements of a method to determine the rock mass strength and a better rock mass strength estimation method should be developed. This