Abstract: The present paper theoretically proposed a better computational method of support by anchor-sbotcrete for bond anchor bolt in axial symmetry.The action between all the bond anchor bolts and the rock medium was equivalently dealt with in a volumetric force applied to the surrounding rock and is considered in the fundamental equations of the problem.Thereby,the better elastoplastic solution is obtained in consideration of the bond anchor bolt.

Key words: bond anchor bolt, radius of plastic zone, support resistance, dilation coefficient

摘要： 本文在轴对称受力条件下,对全长粘结式锚杆的锚喷支护问题,提出了理论上较为完善的计算方法,把每根锚杆对围岩介质的作用等效地视作围岩介质的体积力而考虑在问题的基本方程之中,获得了考虑全粘结式锚杆的弹塑性解答。

关键词: 粘结式锚杆, 塑性区半径, 支护抗力, 扩容系数