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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
•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
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.
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 …
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.
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 …
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
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
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
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
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
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