Analysis of the Optimal Anchoring Angle of Anchor Bolts (Cables) for Slope Reinforcement at Mountain Tunnel Portal Sections
(1 Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031; 2 The First Institute of Civil and Building of the China Railway ErYuan Engineering Group, Co. Ltd.,Chengdu 610031)
Abstract：
The anchor bolt (cable) is commonly used in slope reinforcement, and the anchoring angle is a key pa?
rameter of the design that affects both slope stability and engineering costs. In this paper, a calculation expression for the optimal angle of the anchor bolt (cable) used in a tunnel portal slope was proposed based on a comprehensive analysis of the effects of the anchoring angle on slope stability; the practicability of this calculation expression is verified by a project case.
2016, Vol. 53 