抽采钻孔异常现象观测分析

Observation and Analysis of Abnormal Phenomena in Pumping Boreholes

针对九里山矿深部瓦斯治理过程中钻孔抽采浓度衰减迅速、抽采效率低的现象,利用钻孔成像仪进行钻孔内抽采管路窥视。通过查找抽采管理薄弱环节,发现了穿层钻孔抽采封孔质量差,导致钻孔漏气,影响抽采效率,为指导矿井采取针对性措施,进一步优化钻孔封孔技术工艺、完善管理制度提供依据。

Aiming at the phenomenon that the concentration of borehole drainage attenuates rapidly and the extraction efficiency is low in the deep gas treatment process of Jiulishan Mine,the drilling imager is used to peep at the drainage pipeline in the borehole.Through finding out the weak links of drainage management,it is found that the poor sealing quality of cross layer drilling leads to gas leakage and affects the extraction efficiency,which provides the basis for guiding the mine to take targeted measures,further optimizing the drilling sealing technology and improving the management system.