地质体构造层次变形破坏的动力特性及地震预报

STRUCTURAL HIERARCHY KINETIC NATURE OF DEFORMATION AND FRACTURE OF GEOMEDIUM AND SEISMIC FORECASTING

通过近30a来利用破坏的密度准则及动力事件时间参数在变形破坏过程中的变化规律方法对矿山冲击及地震预测取得的成果进行综述。首先介绍破坏的密度准则物理力学意义;然后介绍在岩体不同层次上变形破坏的自相似特性及破坏的临界密度指数分形特性。最后回顾利用密度准则预报矿区中的矿山冲击、微地震及不同能量的地震方法及这些方法的有效性。该综述将对我国本领域学者具有一定的借鉴作用。

This paper gives an overview of achievements in forecasting rock impact and earthquakes based on the concentration criterion and the evolution law of temporal parameters of dynamic events in fracture processes in the last 30 years. At first,the physico-mechanical meaning of concentration criterion is clarified. Then,the self-similarity of deformation and fracture of rock mass at different structural hierarchies and the fractal natures of the concentration parameters of fracture are introduced. At last,the approaches of forecasting of rock impacts,micro-seismicity in mining regions and earthquakes with different energies and the efficiency of these approaches are overviewed. It is believed that the overview will be helpful for the scholars in this area in China.