OPTIMIZATION OF FRAME-BOLT SUPPORT IN THE DEVELOPMENT WORKINGS, USING COMPUTER MODELING METHOD

摘要

Substantiation is given to spatial geomechanical model of a thin-seam weak rocks massif around bedded development working, taking into account finite-element plotting of real geometrical parameters of frame and bolt supports, foot bearing, lagging and support area with corresponding conditions of their contact and real mechanical characteristics. During performance of the work's basic aim - reduction of the support metal content in the development workings and working hours for its installation - the analysis of multi-variants calculations of vertical, horizontal and general (combinative) stresses was conducted and also near-the-contour rock massif dislocations and bearing elements of frame and bolt supports with three variants of their constructive differences: absence and presence of the bolts in a mine working walls, and in the third variant the wall bolts were being connected with the frame props by mechanical links into single load-bearing construction that provided metal-content reduction of the combined support by 30% due to frame support special profile SVP-27 change to SVP-19.