自然崩落法向无底柱分段崩落法过渡中底柱破坏的力学模型

Mechanical model of pillar destruction in the interim from level caving to sublevel caving without sill pillar

针对自然崩落法向无底柱分段崩落法过渡时底柱破坏的具体要求 ,为保证安全生产 ,提出了悬臂模型 ,并利用弹性力学的方法对底柱的受力情况进行分析计算 ,得出了悬臂折断时的长度。

In the light of the requirements of pillar destruction in the interim from level caving to sublevel caving without sill pillar,a cantalever model is put forward to ensure the safety in production,the stresses in the pillar are analysed with the help of elastic mechanics,the length of cantalever is gained when it is broken.The analysed result is coincident with the fact of the matter.