a criterion established by the analyst. What is more, the slope of relation curve of the friction angle and decreases gradually as increases, which reveals that the friction angle is very sensitive to the impact of when the value of is relatively small. Abstract, slope stability analysis is one of the three classic problems of soil mechanics, an important issue in geotechnical engineering. Your detailed comment is very valuable in this regard. The calculation model for safety factor of slope is illustrated in Figure. Moreover, this paper investigates the impact of Hoek-Brown parameters on the safety factor of slope, which reveals that there is linear relation between equivalent cohesive strength and weakening factor. However, Mohr-Coulomb criterion is restricted to the description of rock mass. Thus the problem can be solved in statically determinate form with limit equilibrium method (LEM). The mentioned method that takes the reserve of strength index to define the factor of safety has clear physical meanings.
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Figure 6: The relation between and the cohesive strength/angle of internal friction. Pile side soil obvious hierarchical nature, pile stress in the soil boundaries parts prone to the mechanical characteristics of the plastic yield area, reflecting the high slope on the abutments to withstand the larger pile Houtu thrust. Author: ZhangDaZheng, tutor: LiHong, school: Chang'an University, course: Structural Engineering, keywords: Loess slope. Hoek-Brown criterion is expressed as where is the effective maximum principle stress when the rock mass is destroyed; is the effective minimum principle stress loaded at the rock mass; is the uniaxial compressive strength of intact rock; is the constant of rock mass and. As increases, the cohesive strength shows the nonlinear decreasing characteristic, while the friction angle shows the nonlinear increasing characteristic.