【摘要】 借助三维非线性有限元计算和现场实测结果，对“反弹”机理、影响因素、显现特征与顶板断裂的关系进行了探讨，并对其工程意义作了评述。更多还原

【Abstract】 Based on caculation of three-dimensional finite element method and field ob-servatiOn results,this paper studies the antielasticity mechanism,affecting factors and the re-lation between abutment characteristics and roof breaking and discusses the engineering signifi-cance of anti-elasticity.更多还原