摘要
用Forcheimer型非Darcy渗流理论,从非线性动力学系统结构失稳的视角揭示了煤矿突水的机理。研究表明：矿井突水与岩层的孔隙率、颗粒直径、雷诺数及水流速度等因素有关;雷诺数Re随孔隙率ε的增大而减小;孔喉比b=0~10,雷诺数受孔喉比影响较大;孔隙率为0.2~0.5,孔喉比受孔隙率的影响较大。
Using forcheimer and non-darcy seepage theory,the mechanism of water inrush is revealed from the structure of nonlinear dynamics system instability perspective.Research shows that： Mine water inrush related to the porosity of rock,particle diameter,reynolds number,and the velocity of flow etc.Reynolds number decreases with the increase of porosity.b is expressed as ratio of pore throat,when b=0~10,Reynolds number greatly influenced by ratio of pore throat.When a=0.2~0.5,the ratio of pore throat greatly influenced by porosity.
出处
《煤炭技术》
CAS
北大核心
2014年第4期23-25,共3页
Coal Technology
基金
国家自然科学基金(51204069
51074075)
中央高校基金(JCB2013B04)
