Comparison between two numerical modeling Distinct element method and Finite element method with the result of physical models, illustrates that UDEC software has better agreement than Phase2 software. My name is Hassan Sarfaraz and I am a Ph. In samples with horizontal layering, the failure is similar to the rock without layers. Slope Stability and Toppling. Extended Abstract Some of the slope failures along oblique faults experienced arch action because the stable scarp was observed after collapse. One of the most important parameters in designing the undercut slope is determination of maximum stable undercut span. Growth of Crack and minimum of safety factor SF are in the first block of rock slopes.
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In this method, the cyclic nature of earthquakes is neglected and instead, an assumed additional static force due to earthquakes is applied to the slope. These samples hame different number, arrangement and size of holes.
Also, as horizontal acceleration coefficient increases, the maximum width of undercut decreases in a low rate. Extended Abstract Some of the slope failures along oblique faults experienced arch action because the stable scarp was observed after collapse.
In this regards, 78 series of numerical modelling with slope angles of 15 to 75 degree 5 degree increment and horizontal acceleration coefficient of 0, 0.
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One of the most important parameters in designing the undercut slope is determination of maximum stable undercut span. Assuming the existence of potential failure plane in the slope models, maximum stable undercut span is measured for different potential slippage plane inclination. By increasing the angle of layering from 30 to 75 degrees, the sample slip along one or several layers, and eventually in Layering with a 90 degree angle, the sample fails in direction of layering.
In this type 3c failure, rock mass fails due to bending stresses and overturning. The result confirmed the formation of arching effect in undercut slopes under static and pseudo-static conditions and illustrated a meaningful relationship between the potential slippage plane inclination nam maximum stable undercut span.
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Slope Stability and Toppling. Pseudo-static slope stability method is based on the inertia slope stability analysis. Help Center Find new research papers in: Due to plain strain analysis of UDEC software, tensile strength are estimated less than experimental tests values. Generally, porosity and voids are common weakness factors of Results of numerical modelling were compared with corresponding pre-available laboratory ones. Maximum variations are in layers with angles of 0 and 90 degrees, and at least is in layers with a 60 degree angle.
This agreement shows that the numerical code is well sarffaraz to analyze the behavior of blocky-flexural toppling failure.
By increasing porosity values from sarraraz to 6. Growth of Crack and minimum of safety factor SF are sadfaraz the first block of rock slopes. This factor is related to other parameters such as shear strength of soil and geometrical properties of slope.
Porosity percentages of samples were 0, 6. The most common feature of the sedimentary and metamorphic rocks is anisotropy. My name is Hassan Sarfaraz and I am a Ph. Such a feedback will be helpful for improvement of initial design and subsequent physical modeling of similar stepped spillways in future. Apart from the frictional resistance along the slope, the resistance between the weak mass and surrounding stable scarp helps to increase the stability of the slope.
In samples with horizontal layering, the failure is similar to the rock without layers. This maximum span is related to various parameters such as strength parameters of soil and geometry of the slope.
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Investigation of crack propagation mechanism is most important phase in rock engineering. Considering complexity of hydraulics of stepped chutes, their initial sarfraz involves pre-selection using empirical equations for computation of flow characteristics and design parameters. Typically, tensile cracks were initiated in bottom or top of the holes, propagated parallel to loading axis and finally reached to the sample naem.
Skip to main content. Statistical analysis of undercut slopes in pseudo-static conditions using Response Surface Methodology more.
Remember me on this computer. The numerical results are then compared with the theory where good agreement were observed. Extended Abstract Blocky-flexural toppling failure is the most failure in layered rock mass of rock slopes.