Geo for Rock Slope Stability

2 February 2017

Currently, the Hoek-Brown failure criterion is widely accepted approach to estimating rock mass strength and it applicability of this criterion is suited to isotropic and homogeneous intact rock, or heavily jointed rock masses. However, for the most geotechnical software applied to rock slopes, still are based on the Mohr-Coulomb failure criterion. The accuracy of using equivalent Mohr-Coulomb parameters to estimate the safety factor in gentle slopes has been investigated.

However, no matter steep slopes or low angle rock slopes, using equivalent Mohr-Coulomb parameters to estimate the safety factor will produces poor estimates of safety factors and predictions of failure surface shapes. In order to obtain better equivalent parameter solutions, this paper proposes to use the Hoek-Brown failure criterion to estimating the factor of safety for rock slope. Compare with Mohr-Coulomb failure criterion and Hoek-Brown, the Hoek-Brown provided a quick and accurate way of analysis the rock slope. That can be substitute for Mohr-Coulomb.

Geo for Rock Slope Stability Essay Example

An earthquake creates seismic waves by sudden release of energy and movement of large sections of the earth’s rocky outermost crust. In its most general sense, the earthquake is used to describe any sudden and violent shaking of the ground, as a result of movements within the earth’s crust or caused by humans that generate seismic waves. The earthquake is not only brought the huge destruction for large engineering structures, for example: dams, building and high way. It will also effects on the economic and make the inflation to improve. Furthermore, it creates injury or loss of life.

Therefore, slope stability analysis is performed to assess the safe and economic design of a human made or natural slope, and the equilibrium conditions became more important. For the slope stability analysis, the most important objective is to find endangered areas. Besides, the slope stability analysis also can help engineer? s investigation of potential failure mechanisms, determination of the slope sensitivity to be different triggering mechanisms and designing of optimal slopes with regard to safety, reliability and economics, find the ossible remedial measures.

The Successful design of the slope requires geological information and site characteristics. For example rock mass, groundwater, geological strength index, earthquake activity. In nowadays, there is a lot of software can be chosen to analysis the slope stability, the ranges from simple limit equilibrium techniques through computational limit analysis approaches such as Limit equilibrium analysis, Stereographic and kinematic analysis to complex and sophisticated numerical solutions such as Numerical methods of analysis.

During the difference rock conditions, engineers must consider the varying strengths, disadvantage and limitations inherent in each methodology, choice the best analysis technique for their design. The software of solid 6. 0 can do the safety assessments for civil infrastructures located on a slope. It is a slope stability program developed by Rocscience. Besides, solid 6. 0 provides windows based user friendly graphic interface for performing simple computer simulations of the response of structures subjected to earthquake movement of sections of the earth’s rocky.

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