基于煤层顶板充水含水层水压的“修正三图-双预测法”研究

A modified three graphics-two predictions method based on hydraulic pressure of aquifers above coal seam roof

针对煤层回采形成的冒裂带未导通其顶板充水含水层区域的涌(突)水危险性评价问题,应用"修正三图—双预测法"对此类区域进行涌(突)水危险性评价,并将评价结果与已掌握的实际资料对比。结果表明,应用"修正三图—双预测法"的评价结果较传统的"三图—双预测法"评价结果与实测资料吻合度更高。因此,对于冒裂带未导通顶板充水含水层区域的涌(突)水危险性评价问题,"修正三图—双预测法"更具优势。

A modified three graphics-two predictions method for water inrush risk evaluation was applied to aquifers zones above coal seam roof where caving and fractured zones were not conducting, and the evaluation results were compared with measured data. It shows that a higher degree of agreement with the measured data is obtained when the modified three graphics-two predictions method is used. Therefore, this method offers more advantage than the traditional one, when evaluations are needed for aquifer zones which are not conducting with caving and fractured zones.