摘要
以单一裂纹岩石为研究对象,采用东北大学岩石破裂与失稳研究中心的岩石破裂过程分析系统(RFPA),分析裂纹破坏机理。依据铜川矿区东坡井田的实际地质资料,建立Z2M1、Z2M2两种不同均质度的构造界面模型。数值实验结果表明,岩石的破坏是由原生裂纹引起的,构造界面的不同是引起采煤沉陷及覆岩破坏规律差异性的重要因素。对岩体变形机理的研究为控制地表破坏提供理论依据。
The paper starts with the analysis of the destruction mechanism of single crack rock. The results from numerical tests of model are consistent with the theory by the Center for Rock Instability ＆ Seismicity Research（ CRISR）, Northeastern University, using the Rock Failing Process Analysis Code RFPA. The analysis involves making numerical text of single crack rock, developing two different models, based on actual geologic date coming from Dongpo well of Tongchuan mining area, and studying if the destruction of rock or rock body is controlled by the crack or week interface. The numerical tests resuls show that the destruction of rock is result of original fractures. The different structural interface are the important factor for difference of ground subsidence and overlying rocks failure law.
出处
《黑龙江科技学院学报》
CAS
2006年第4期227-230,共4页
Journal of Heilongjiang Institute of Science and Technology
基金
国家自然科学基金项目(40472104)
关键词
采煤沉陷
裂纹扩展
构造界面
数值
覆岩破坏
mining depression
crack growth
structural interface
numerical tests
overlying rocks failure
