九里山矿16131工作面穿层钻孔抽采异常现象分析

针对九里山矿16131工作面部分区域瓦斯治理过程中钻孔抽采浓度衰减迅速、抽采效率低的问题，通过现场调研、梳理分析，考察对比了矿井短时间内密集施工抽采钻孔、强化水力冲孔增透措施情况下穿层钻孔抽采浓度变化情况，分析了抽采钻孔大面积串孔漏气抽采异常现象，提出合理安排钻孔施工间隔、控制抽采钻孔冲孔煤量、加强抽采钻孔封孔管理等优化措施，为实现矿井瓦斯抽采、效率的最大化具有一定指导意义。

Analysis of abnormal phenomenon of layer-through boreholes on 16131 working face of Jiulishan Mine

In view of the problems of rapid attenuation of borehole extraction concentration and low extraction efficiency during the gas control process in part of the 16131 working face of Jiulishan Mine，through field investigation and combing analysis，the investigation and comparison of the intensive construction of extraction boreholes in the mine in a short time and strengthen in the case of hydraulic punching and permeability enhancement measures，the drilling concentration variation of the through-hole drilling was analyzed.The abnormal phenomenon of large-area string hole leakage pumping in the drilling hole was analyzed.It was proposed to arrange the drilling construction interval reasonably and control the drilling hole punching.Optimizing measures such as coal volume and strengthening the management of drainage hole sealing had certain guiding significance for the realization of mine gas drainage and maximization of efficiency.