Rock bridging rocscience

MJ Series Jaw Crusher

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as a coarse crushing crusher. Its purpose is to crush rocks into smaller particle sizes for subsequent processing…

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MC Series Single-Cylinder Hydraulic Cone Crusher

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is used in secondary and fine crushing operations. It is widely used in metallurgy, construction, highway,…

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ML Series Vertical Shaft Impact Crusher

ML Series Vertical Shaft Impact Crusher

Vertical shaft impact crusher is often used in the final crushing circuit. Due to the ability to produce fine-grained final products, ML series vertical…

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MD Series Multi-Cylinder Hydraulic Cone Crusher

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD series multi-cylinder hydraulic cone crusher is used in the second and third stages of mineral processing and stone crushing, as well as the superfine…

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MF Series Fixed Shaft Circular Vibrating Screen

MF Series Fixed Shaft Circular Vibrating Screen

In order to eliminate the phenomenon of unbalanced vibration, unstable amplitude, on/off bounce, poor screening effect, and cracking of the screen box…

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MGD Series Vibrating Feeder

MGD Series Vibrating Feeder

MGD series vibrating feeder is designed for ultra-heavy working conditions and is suitable for feeding materials to primary jaw crushers, primary impact…

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MGB series hopper discharge feeder

MGB series hopper discharge feeder

MGB series hopper discharge feeder is mainly used for the uniform, quantitative and automatic control of under-silo feeding of bulk materials.…

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MZA/K Series Circular Vibrating Screen

MZA/K Series Circular Vibrating Screen

MZA/K series circular vibrating screen produced by Meilan has an axis-eccentric circular vibrating screen, which can be used for dry and wet classification…

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  • OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
    Email: [email protected]

  • (PDF) Design of Rock Slope Reinforcement: An Himalayan

    Nov 24, 2020· The rock slopes are composed of a heavily jointed rock mass and the spacing, dip and dip direction of joint sets are varying at different locations. (Rocscience 2014; Gaurav and Gali 2016

  • Andrew Shiels - Senior Geotechnical Engineer - Glencore

    •Fragmentation modelling (BCF), cave flow modelling (PGCA), 2D/3D surface and underground numerical modelling (Rocscience / Map3D), rock mass characterisation, domain generation and modelling (Leapfrog), caveability and subsidence assessments, ground support design •Project governance and risk analysis

  • Numerical investigations of rock bridge effect on open pit

    Dec 01, 2019· Rock bridges are recognised as a critical factor in the stability of rock slopes. However, they still remain a challenging problem with respect to their measurement and incorporation into design analysis (Elmo et al., 2018). It remains problematic that their presence prior to failure is not visible unless the rock mass is exposed.

  • Bridge Abutment Cantilevered Wall Founded on Inclined Rock

    May 27, 2014· I'm designing a +/- 20' tall bridge abutment at a stream crossing that will be founded on an inclined rock. The abutment is a cantilevered wall that will support the …

  • Excavation in Rock - Foundation engineering - Eng-Tips

    Nov 30, 2005· This rock can be cleaned out and filled with concrete or left and the footing built o top of i. This would depend in your structures needs. Generally the rock is blasted prior to removing the overburden as the over burden provides confining pressure, sound dampining and prevention of fly rock.

  • Rock Engineering: Rock Slopes - Continuing Education for

    Later development involved treating rock mass as both continuum and discrete materials, depending on the scale of the rock mass, to reflect real rock mass that ranges from an intact, continuum single rock block to a conglomerate of discrete rock blocks separated by …

  • Geotechnical Design Manual -Chapter 9 - Oregon

    Rock embankments, also known as all-weather embankments, are defined as fills in which the material is non-moisture-density testable and is composed of durable granular materials. International), Slide® (Rocscience, Inc.), and/or ReSSA

  • Lecture 4: Kinematic Analysis (Wedge Failure)

    rock face. Several procedures have been developed to calculate persistence by measuring their exposed trace lengths on a specified area of the face. Step 1: define a mapping area on the rock face with dimensions L1 and L2. scan line L2 L1 Step 2: count the total number of discontinuities (N’’) of a specific set with dip in this area, and

  • Probabilistic assessment of rock slope stability using

    A new methodology for probabilistic rock slope stability assessment was developed. This methodology enables the analyst to estimate the probability of failure by incorporating the variability of the geometric parameters such as joint orientation and trace length in the stability analysis. This improves the reliability of any future design, remedial action or risk assessment. Although

  • Identifying and mapping potentially adverse

    Mar 05, 2020· Fracture length, block size, span of the opening, and rock bridging were measured using the “Point Picking” tool. These values were useful for determining the degree of jointing parameters in the Tunneling Quality Index (Q) of the Norwegian Geotechnical Institute ( Barton et al., 1974 ) and the Rock Mass Rating (RMR) system ( Bieniawski

  • (PDF) Study of a rockfall in a limy conglomerate canyon

    These values have been estimated by means of the estimated in crm = 674 kPa and /rm = 66.5 . code Roc-Lab (Rocscience 2010) incorporating the Hoek– With all this included in a calculation sheet the values of Brown characterization for rock masses (Hoek et al. 2002), sb, ssr, ssl-j and ssl-r can be computed once to know the in such a way that

  • Our Team MineGeoTech

    Rock mass and ground support scheme response and design in a seismic and non-seismic environment. reduction in drill and blast costs and minimisation of bridging in the cave. Five years as Geotechnical Engineer (plus often undertaking the drill and blast role), incorporating a two year period of high mine seismicity, supervision of