水力冲孔技术在九鑫煤矿的应用研究  

Research on application of hydraulic punching technology in Jiuxin Coal Mine

作　　者：陈芳 Chen Fang(Qinhe Energy Group Co.,Ltd.,Jincheng 048200,China)

机构地区：[1]沁和能源集团有限公司,山西晋城048200

出　　处：《能源与环保》2025年第2期81-88,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：针对九鑫煤矿特有的地质构造和煤层特性,采用水力冲孔技术进行瓦斯抽采效率提升的实验研究。通过三维数值模型模拟和现场实际钻孔验证,确定了水力冲孔的关键参数:破煤压力16 MPa,冲孔时间30 min,采用前进式冲孔方式。在多钻孔组合抽采中,抽采时间分别为90、120、150和180 d时,合理布孔间距分别为2.0、3.0、3.5和4.0 m。结果表明,水力冲孔钻孔平均抽采浓度和流量分别为普通钻孔的2.65倍和1.87倍,日均抽采量提高了约3.95倍。特别是在瓦斯浓度保持在较高水平的持续时间上,水力冲孔钻孔显著优于普通钻孔。这不仅表明了水力冲孔技术在提高瓦斯抽采效率方面的显著优势,也展示了其在煤矿安全生产中的工业应用价值,可为后续工作面工业性应用提供理论和实践依据。The study focuses on the unique geological structure and coal seam characteristics of Jiuxin Coal Mine,and experimental research on improving gas extraction efficiency using hydraulic punching technology was conducted.Through the simulation of three-dimensional numerical model and the verification of actual drilling on-site,the key parameters of hydraulic punching were determined,coal-breaking pressure of 16 MPa,punching time of 30 minutes,and forward punching method.In the multi-drilling combination pumping,the reasonable spacing betwee boreholes is 2.0,3.0,3.5 and 4.0 m when the pumping time is 90,120,150 and 180 days,respectively.The experimental results showed that the average extraction concentration and flow rate of the hydraulic punching boreholes were 2.65 times and 1.87 times higher than those of the ordinary boreholes,and the average daily gas extraction volume was increased by about 3.95 times,respectively.Especially in the duration of the gas concentration remaining at a high level,the hydraulic punching borehole was significantly better than the ordinary borehole.These conclusions not only proved the significant advantages of hydraulic punching technology in improving gas extraction efficiency,but also demonstrated its industrial application value in coal mine safety production,which provided theoretical and practical basis for the industrial application of subsequent working faces.

关 键 词：水力冲孔 有效抽采半径 瓦斯抽采 

分 类 号：TD712[矿业工程—矿井通风与安全]