TITLE:
Analysis on Fracture Mechanics of Unstable Rock
AUTHORS:
Siqi Chen, Hongkai Chen, Ming Yang, Tao Chen, Kexuan Guo
KEYWORDS:
Fracture Mechanics, Composite Stress Intensity Factor, Fracture Angle, Unstable Rock
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.4 No.3C,
September
22,
2016
ABSTRACT: Unstable rock is a kind of global geological disaster with high frequency. This paper, considering three kinds of combined loads which are gravity, fracture water pressure and seismic force, constructs a unstable rock mechanics model and it uses a fracture mechanics method to deduce the composite stress intensity factor of the type I - II. Based on the maximum circumferential stress theory, this article calculates the theo-retical fracture angle by triangle universal formula.