SOFTWARE FOR STABILITY ANALYSIS OF ROCK SLOPES WITH 3D-WEDGE FAILURE WITH GRAPHICS

Abstract

The stability of rock slopes is one of the important factors used by the civil engineers and mining engineers.Rock falls, rotational slides, translational slides and flows are some of the terms to describe the movement of rocks or soils in the slope engineering. With the increase in construction activities and change in the geological conditions with passage of time, in fragile ecosystem of the Himalaya, it becomes necessary to evaluate the stability of hill slopes. The basic modes of failure of rock mass are planar sliding,wedge sliding, circular failure and toppling failure. The problem frequently encountered in rock slopes is that involving sliding of a wedge on two intersecting discontinuities i.e.,wedge failure. The wedge failure is analysed by engineering graphics method, stereographic projection method and analytical method.But Hoek and Bray in.troduced a wedge solution for rapid computation .In the present work,Hoek and Bray's method (Rigorous Solution)is analysed sed. It accounts for tension cracks,dip of top terrace,earthquake, seepage, bolt force and foundation load. It has advantages over other methods. The remedial measures to increase the stability of the slopes are also discussed. In the present study,a 'COMPUTER PROGRAM FOR STABILITY ANALYSIS OF ROCK SLOPES WITH TETRAHEDRAL WEDGE SLIDING BY RIGOROUS ANALYSIS WITH GRAPHICS'has been developed. In the analysis,'FORTRAN'language along with 'GRAPH X 'library has been used to present the results of analysis with graphics display on P.C.monitor. As personal computers are readily available with the engineers and geologists at their offices,the present work provides an efficient means to analyse the rock slopes with a physical feel of rockslide problems.