【摘要】 针对单一关键层浅埋煤层,采用实验室物理模拟揭示了采动导水裂隙动态发育规律。模拟结果表明,采动导水裂隙的演化分为发展期、贯通期和压实闭合期3个阶段;导水裂隙的动态发育受基本顶关键层控制;通过分析得出了防止工作面涌水溃沙的基本原理,能解决西部矿区保水防溃采煤的安全问题。更多还原

【Abstract】 According to the shallow depth seam as one single key seam, the lab physical simulation showed the dynamic development law of the water conducted pore after the mining activity. The simulation results showed that the evolution of the water conducted pore after the mining activity could be divided into three phases, such as the development phase, connected through phase and compact closed phase. The dynamic development of the water conducted pore was subjected to the control of the key layer in the basic roof. After the analysis, the basic principle of the water inrush and sand inrush prevention and control in coal mining face was obtained, which would solve the mine safety issue of water conservation and water inrush and inrush prevention in the West China.更多还原