用突变理论分析矿山冒落型地震机理

Study of Mechanism of Mine Tremor Due to Falling-in by Catastrophic Theory

矿山冒落型地震是一种破坏性最为严重的地质灾害之一。研究其成因机理 ,对矿山安全生产具有重大的现实意义。笔者根据矿山冒落型地震的特征 ,应用突变理论和能量守恒原理 ,建立了一个简单的力学模型 ,提出由地下开采引起采空区顶板突然破坏和冒落—释放能量—诱发地震的观点 ,并结合现场实例进行分析 ,得到顶板冒落和所释放出来的能量表达式 ,这为研究矿山冒落型地震成因机理提供了一种新的方法。

The mine earthquake caused by falling is a serious geological disaster. To study its origin and mechanism is of great significance to production safety in mine. According to the characteristics of the mine earthquake caused by falling, a simple mechanics model applying the catastrophic theory and the law of energy conservation is established. The author considers that the mine earthquake might be caused by the energy release when roof falling after underground mining. Combined with the analysis of exemplified case on location, simple formulae for roof falling and energy liberation are derived, which would provide new method for the study of the origin and mechanism of mine tremor due to falling in.