封闭不良钻孔导水危险性定量评价研究

Quantitative Evaluation on Risk of Water Inrush from Poor Sealing Borehole

为评价封闭不良钻孔导水的危险性,以兖州矿区东滩煤矿封闭不良钻孔为研究对象,系统分析了封闭不良钻孔导水危险性主要影响因素,提出了包括充水水源、地质构造以及采掘活动影响等指标的二级评价指标体系,构建了评价指标定量计算方法以及封闭不良钻孔导水危险性定量评价模型,实现了东滩煤矿多个封闭不良钻孔的导水性评价,部分评价结果的准确性得到了生产实践的验证。

To evaluate the risk of water inrush from poor sealing borehole, main influencing factors were systematically analyzed on the risk of water inrush from poor sealing borehole in Dongtan coal mine of Yanzhou mining area. On this basis, a two - level evaluation index system was proposed, including the water source, geological structure and mining activities influence. A quantitative calculation method of evaluation indexes and a quantitative evaluation model for water inrush risk of poor sealing borehole were established. With the model, risk evaluation of water inrush from poor sealing borehole was realized, and the accuracy of partial evaluation results was verified by production practice.