锚杆支护顶板失稳的突变理论浅析

Brief analysis on the destabilization of the roof bolting by means of catastrophe theory

应用突变理论来研究采场锚杆支护顶板围岩失稳的力学过程，分析研究了锚杆支护系统发生突变的突变尖点。当采场锚杆支护系统处于极限应力状态时，支护系统中积聚的能量（ 变形势能、外力势能、冲击势能） 是锚杆支护结构发生突变的主要因素，同时。

The paper studies the mechanics process of destabilization of the roof bolting by means of the catastrophe theory.The points of inflection of catastrophe are analyzed in the roof bolting system.As the roof bolting system is in the state of ultimate stress,the accumulative potential energy (deformation energy,exogenic force energy,impacting energy)is the major factor for the roof bolting structure to accrue catastrophe.At the same time,the defect of the roof bolting system largely reduce the stability of whole structure system.