摘要
依据轴对称巷道的基本方程和马克斯威尔流变模型稳态蠕变阶段的体积不变与弹性应变率不变条件。
The solutions of roadway of linear and non-linear visco-elastic soft surrounding rock is derived respectively, in accordance with the basic equations of axisymmetrical roadway, Maxwell 's stable rheology model of constant elastic strain ratio and non-volume change. Through the visco-elastic finite element numerical simulation of a soft roadway, it is found that during unstable creep stage, the distribution of stresses in soft rock surrounding roadway is related to time. Therefore, the assumption that visco-elastic stress distribution keeps unchanged is only applicable to stable creep stage. The numerical solutions using stable visco-elastic finite element method in the paper are closely consistent with related theoretical results.
出处
《矿山压力与顶板管理》
1997年第1期29-31,共3页
Ground Pressure and Strata Control
基金
国家自然科学基金
煤炭科学基金
