“多类型四双法”在煤矿顶板涌(突)水危险中的应用研究

Application Research of“Multi-type,Four-double(MTFD)Method”in Coal Roof Water Inrush(Bursting)Hazard Prediction

煤层顶板水害一直影响煤矿安全开采。传统的“三图-双预测法”专业性强,评价过程复杂,适用范围有限,针对目前缺少一套适用于各种地质条件的顶板评价体系,运用“多类型四双法”(MTFD法)对煤层顶板涌(突)水危险性进行了预测评价,方法简单易懂,便于操作。将评价结果与传统的“三图—双预测法”对比,结果表明,“多类型四双法”的评价结果与实际验证结果吻合度更高。对于水文地质勘探程度较低,数据信息不全的矿井,“多类型四双法”更具优势。

The coal roof water hazard has always threatened coalmine safe extraction.The traditional“three zoning maps and dual water inflow predictions method”has issues of strong expertise needed,complex assessment process and limited application scope.Considering still short of an applicable roof assessment system set for various geological conditions up to now,the author has used the MTFD method carried out coal roof water inrush(bursting)hazard prediction and assessment.The method is easy to be understood and operated.Comparison of results from MTFD method and traditional“three zoning maps and dual water inflow predictions method”has shown that the assessed results from MTFD method have higher coincidence with actual validated results.Thus,to mines with lower hydrogeological exploration degree and imperfect data,information,the MTFD method has more advantageous.