*Slope Engineering*


elements and nodes used will also be high so that the computation time can run for days depending on the number of nodes and types on mesh used. The computation time is closely related to the maximum number of iterations in the calculation of the

**Input parameter Limonite Saprolite Bedrock Unit** Unit Weight 17.19 15.77 29 γ<sup>n</sup> (kN/m3

Cohesion 41.14 38.06 3270 C (KPa) Internal Friction Angle 15.67 12.58 41.68 ϕ (°) Modulus Young 20,000 20,000 150,000 ε (Kpa) Poisson Ratio 0.30 0.40 0.20 ν

**Max iteration Max columns in X or Y FoS Volume (m3**

*Three Dimensional Slope Stability Analysis of Open Pit Mine*

*DOI: http://dx.doi.org/10.5772/intechopen.94088*

50 0.82 38,239

50 2.02 185,006

*The influence of max columns in X or Y and max iteration in determining safety factor.*

**Table 2.**

**Figure 13.**

**Table 3.** *Material properties.*

*3D slope geometry model.*

 2.00 200,779 2.00 195,602

 2.01 192,786 2.01 204,299 2.01 196,060 2.01 187,613 2.01 187,709

 2.04 173,577 2.03 175,154 2.01 187,845 2.01 189,787 2.01 177,988 **)**

)


## *Three Dimensional Slope Stability Analysis of Open Pit Mine DOI: http://dx.doi.org/10.5772/intechopen.94088*

#### **Table 2.**

**Max iteration Max columns in X or Y FoS Volume (m3**

 2.02 179,523 2.10 229,704 2.10 303,186 2.01 183,631 2.01 187,898

 2.02 192,951 2.03 167,961 2.02 178,858 2.02 171,821 2.01 183,469

 2.02 180,573 2.01 178,671 2.01 193,606 2.01 180,490 2.02 190,336

 2.01 174,180 2.03 170,430 2.01 179,233 1.00 19,008 1.99 199,321

 2.01 179,535 2.10 258,302 2.19 270,897 2.04 172,299 1.99 192,171

 2.05 174,848 2.02 199,719 2.00 195,231 2.00 194,572 2.00 186,047

 2.04 171,805 2.02 178,812 2.01 184,185

50 2.06 159,816

*Slope Engineering*

50 2.03 179,192

50 2.02 175,113

50 2.00 194,125

50 2.01 180,821

50 2.00 195,539

50 2.05 157,244

**)**

*The influence of max columns in X or Y and max iteration in determining safety factor.*
