Rocscience RocSupport

Ground Reaction Curve
Easy-to-use software for estimating deformation of circular excavations in weak rock. Given the tunnel radius, in-situ stress conditions, rock parameters and support parameters, a ground reaction curve and a support reaction curve are calculated. The intersection of these curves determines a factor of safety for the support system. Account for long term tunnel behaviour by applying a strength reduction factor to obtain a long-term Ground Reaction Curve.

Support Options
Install combinations of Rockbolts, Steelsets, Shotcrete, or Custom supports. Users can select from a library of predefined supports using manufacturer’s specifications. Define support installation as the distance from the tunnel face, by percentage of tunnel convergence or by tunnel displacement.

Deterministic or Probabilistic Analysis
Compute a factor of safety with deterministic analysis or probability of failure for probabilistic models using convergence-confinement analysis. Model variability in tunnel radius, in-situ stress, and rock material properties by assigning statistical distributions to variables. Create histogram, cumulative, and scatter plots of statistical data.

RocPlane RocSupport
RocSupport is a quick and simple to use program for estimating the deformation of circular tunnels in weak rock, and visualizing the tunnel interaction with various support systems.

The analysis method used in RocSupport is often referred to as “rock support interaction” or “convergence-confinement” analysis. This analysis method is based on the concept of a “ground reaction curve” or “characteristic line”, obtained from the analytical solution for a circular tunnel in an elasto-plastic rock mass under
a hydrostatic stress field.

RocSupport across Applications :

1. Mining
Estimate support requirements of tunnels in weak rock with quick parametric analysis.

2. Tunnels
Model supported or unsupported tunnels with circular sections in weak rock.

Explore the latest features in RocSupport :

1. Vrakas Method
The Vrakas Method (2016) is a new analysis option in RocSupport used for tunnels with large-strain non-linear Generalized Hoek-Brown with dilation.

2. Batch Compute
Save time with the Batch Compute feature which enables you to compute several deterministic and/or probabilistic RocSupport model files (.rsp) at once and quickly generate results to text or Excel format.

3. Automate From Excel
Automate a deterministic or probabilistic analysis in RocSupport by reading in various numerical input data from an Excel template, and quickly generating computed results to text or Excel format.

Technical Specifications RocSupport :

A. Analysis Options
– Duncan Fama solution for ground reaction curve
– Carranza-Torres solution
– Vrakas and Anagnostou solution
– Lee and Pietruszczak solution
– Barbosa solution
– Vrakas (2016) solution
– Plot long-term ground reaction curve (specify strength reduction factor)
– Deterministic (safety factor) or probabilistic (probability of failure) analysis

B. Probabilistic Analysis
– Monte Carlo or Latin Hypercube simulation
– Random or pseudo-random sampling
– Random variables—all tunnel and rock parameters can be defined as random variables
– Statistical distributions—normal, uniform, triangular, beta, exponential, lognormal, gamma
– Histogram, cumulative, and scatter plots
– User-defined plot variables
– Best-fi t distribution and regression line
– Highlight support failure on histogram and scatter plots
– One-click export of charts to Excel

C. Rock Parameters
– Elastic properties: Young’s Modulus, Poisson’s Ratio
– Strength properties: Mohr-Coulomb or Generalized Hoek-Brown
– Equivalent Mohr-Coulomb parameters can be calculated from Hoek-Brown parameters (GSI, mi, intact UCS, D)
– Built-in charts and tables help estimate suitable values of GSI, mi, intact UCS, and D
– Peak and residual strength parameters for Generalized Hoek-Brown criterion

D. Support
– Pre-defined support types for rock bolts, steel sets, and shotcrete
– Combine multiple support types (e.g., rock bolts and shotcrete)
– Simple parametric analysis —add, change, or remove support with a few mouse clicks
– User-defined support
– Support installation—specify distance from face or tunnel convergence
– Interactive positioning of support
– Longitudinal deformation profile —built-in or user-defined function
– Custom support option for each of the three support types
– Steel set reinforcement database

E. Tunnel Parameters
– Tunnel radius
– In-situ stress

F. Viewing Options
– Ground reaction and support reaction views
– Tunnel section and plastic zone radius views
– Customize display options
– Export image fi les
– Info Viewer summary of analysis results

RocSupport Plans & Pricing :
1. Personal
A. Perpetual – One-time purchase
– Own the version of your license in perpetuity
– Maintenance+ subscription included in first year
– Install on one computer

B. Lease – Ongoing subscription
/ year

– Maintenance+ subscription
– Ongoing bug fixes
– Continuous new features
– Install on one computer

2. Flexible
A. Perpetual – One-time purchase
– Own the version of your license in perpetuity
– Maintenance+ subscription included in first year
– Access on multiple computers

B. Lease – Ongoing subscription
/ year

– Maintenance+ subscription
– Ongoing bug fixes
– Continuous new features
– Access on multiple computers

About Rocscience
Founded in 1996, Rocscience is a world leader in developing 2D and 3D software for civil, mining, and geotechnical engineers. As engineers ourselves, we know the importance of having reliable and easy-to-use software. That’s why we constantly develop and refine our programs to make expert solutions that work for you.

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