【摘要】 煤层采出后,上覆岩层中会形成导水裂隙带,导水裂隙带一旦导通煤层上覆水体,则会导致水体的水流入或溃入井下,直接威胁煤矿生产。根据12105工作面顶板岩石力学性质,运用经验公式对导水裂隙带高度进行了预测。利用双端堵水方法研究了12105工作面导水裂隙带发育规律,得出漏失量曲线,导水裂隙带最大高度为23.4m,裂采比为16.8。研究结果为矿井开采提供了设计依据。更多还原

【Abstract】 After mining,water flowing fractured zone will form in overlying strata.Once water flowing fractured zone spreads to water body in overlying strata,water will flow or gush into underground.As a result,coal mine safety will be threatened directly.In this paper,suitable empirical formula was chosen which base on the rock mechanical property.Using empirical formula,water flowing fractured zone of 12105 workface was predicted.Using double-head water-stopped machine,development law of water flowing fractured zone was researched.Leakage curve present lower sides and higher middle.The biggest height of water flowing fractured zone is 23.4 meter.The ratio of the height of the fractured zone to the mining height is 16.8.The results provide design basis for mining.更多还原