The soil ESP influence on soil internal frictionalangle is small.
但土壤碱度对土壤内摩擦角的影响较小。
2
In this Paper the joint profile expression and fractal theory are reviewed, and the fractal theory is used to study the frictionalAngle of the rock joint.
Discrete element method is used to analyze the roof stability in accordance with the variation of its loading, rock frictionalAngle, bolt spacing, rock properties and bolt orientation.