Geosoft International software

ROTOMAP is a three-dimensional model that is used for rockfall analysis and the design of rockfall protective systems. This module belongs to the Isomap family: please check the ISOMAP page for a complete description of the main module features. ROTOMAP uses a statistical approach; it simulates a large number of rockfalls and, through the analysis of the distribution of the average and maximum kinetic energies, identifies the optimal areas for the installation of the protective systems. The program requires a detailed topographic map and a geomorphologic data collection to identify the areas where a rockfall can initiate, and to distinguish the different surface types, such as clean faces of hard unweathered rock or surfaces covered in talus, scree or gravel material.

ROCK3D is a program for stability analysis of removable blocks on planar rock slopes. It identifies and analyses all the blocks that have formed under each kinematic mode. Once the geometry of the rock blocks has been identified, the bolt forces necessary to reach a required safety factor are calculated. The structural geology data collection is carried out through the introduction of the joint orientations and the co-ordinates of the end points of the joint traces that are visible on the slope surface. The rock slope orientation and the rock mass parameters are also necessary for the evaluation of the safety factors and for the design of the rock bolts.

CLU-STAR is a program for computerised structural geology data collection and analysis. The program recognises the discontinuity sets of a rock mass through hierarchical and non-hierarchical clustering procedures derived from the multivariate analysis. These clustering procedures operate directly on the collected data instead of on their statistical distribution; the results are consequently closer to the geomechanical reality. The high interactivity of the program offers the operator a better control of the full sequence of operations, as it is possible to choose the clustering level (and hence the dimension of the clusters), as well as the algorithms for the assignment of the joints to the individual discontinuity sets.

The program analyses the behaviour of the rock slopes under seismic conditions. It evaluates the displacements of a rock block subject to dynamic forces, on the basis of a given accelerogram. The use of a calculation method based on a given accelerogram for rock slope stability analysis allows one to take into account the duration and the intensity of the accelerogram itself (this not being the case with the normally used limit equilibrium methods). This allows a more realistic estimation of the effects of a seismic event on a potentially unstable rock block.

The program classifies rock masses using both the Bieniawski and the Barton methods, making it thus possible to compare the results that can be obtained with the two most frequently used classification methods. The Bieniawski classification (RMR Index) evaluates different parameters to which a numerical coefficient is assigned. The sum of these coefficients determine the Rock Mass Rating class the rock mass belongs to.
At the end of the analysis, the program calculates the GSI index (Geological Strength Index) using the relation GSI = RMR89 - 5, Where RMR89 is evaluated by placing the rating of the parameter over a presence of water equal to 15, and the correction parameter over the direction of the joints equal to zero.

I.L.A. is a complete slope stability analysis program that also incorporates powerful features for retaining system designing. The slope analysis and design can be performed using the Sarma method, whose numerical stability increases the reliability of the calculations. The classic Bishop, Jambu, Morgenstern & Price and Bell methods are also available; this allows to compare the results and obtain a more complete and affordable elaboration. The failure surfaces can either be defined as circular or planar surface families or even individually, as polygonal surfaces, and therefore have any shape whatsoever.

Ce.Ca.P. is a complete package for the analysis and design of foundations; because of its completeness, flexibility ad user-friendliness it is a fundamental instrument for any kind of geotechnical project. To calculate the bearing capacity of foundations, the following methods can be used: Terzaghi, Meyerhof, Hansen and Vesic. Such methods are based on different hypotheses regarding failure modes, and it is therefore interesting to compare the different results. Normally, the allowable bearing pressure is determined for a given shape (square, rectangular, circular or strip) and stratigraphy.

This program perform all the function of the Isomap package and can be considered as it extension. Most of the complex problems related to ground-water modeling can be solved with INQUIMAP. It allows the geometric modeling of the water table and the insertion of one or several wells, flooded areas, barriers and impermeable barriers, recharge points and variations in permeability. The obtained surfaces can be directly used to determine safe areas or to identify, in back-analysis terms, the position of the contamination sources. The calculation can be performed with the finite differences method (this allows the introduction of recharge areas and points with a fixed or lowered piezometric levels), as well as trough the superimposition of effects (operating on a unconfined, confined or semi-confined aquifer, in steady or transient flow conditions).

ISOMAP is the module that is used to calculate and render surfaces through contour lines or coloured and shaded areas with a high degree of precision. The program allows the representation of the surface both in topographic map and perspective view forms. The calculation is performed in two stages. The first stage consists of creating a regular grid from a collection of arbitrarily positioned points. The second stage consists of drawing the surface using the previously created grid. The first stage can be performed using three methods: the inverse distance method, the kriging method, and a new interpolation and extrapolation method based on a weighted average of polynomial surfaces.

ELETOM is a software that performs complete 2D inversion (and not the simple iterative deconvolution of the pseudo-sections) of surface electrical surveys with any measurement array (Wenner, dipole-dipole, pole-dipole, pole-pole, user defined arrays, mixed arrays) with a maximum of 64 electrode positions that can be added by the user as required. ELETOM uses the finite elements method (FEM) in two dimensions to model the electrical response of the subsurface. The elements that define the grid are trapezoidal in form to enable one to compensate any height differences between the electrode positions. The current dispersion in the third spatial dimension (perpendicular to the section of interest) is taken into consideration using Wannamaker`s correction.