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Software

   

A program for the geometrical reconstruction and subsequent stabilisation of rock blocks.

It is an advanced programme for geomechanical calculations that reconstructs the shape of potentially unstable rock blocks, beginning with measuring orientation, position at the rock face and lenght of fractures at the outcrop.

It can deal with simple fronts, as well as overhanging cliffs, terraces and the roofs of underground excavations.

As with the CLU_STAR programme, recognition of the principal families is performed.

Using the Goodman and Shi "key block theory" the kinematical conditions that could give rise to unstable blocks are determined.

For each of these kinematical conditions the programme determines the maximum closed contours resulting from the connected traces of the joints that respect the kinematical condition under examination.

The programme then reconstructs the real blocks derived from the union of all the elementary polyhedra compatible with the kinematical conditions under examination contained within the closed contours as identified in the preceding phase.

The volume and surface of each block is calculated, and with the known geomechanical parameters, the computation proceeds with the determination of the safety factor under natural conditions and the rock bolting necessary to obtain the required stability conditions.

The programme can optionally generate maps of pseudo-random joints that respect the statistical distribution of the frequencies and of the outlines as seen on the rock face.

In this way it is possible to formulate hypotheses on the behaviour of the rock face after removal of rock, and so prepare a project for stabilisation.

The output comprises the plot of the traces of the joints, the stereographical projections of the families, the "key block theory" projections and the perspective or orthographic projection of the blocks.

Furthermore print-outs can be generated comprising input data and the results of the various phases of the calculation.

 

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