采空区千米定向长钻孔瓦斯抽采布置参数优化  

Optimization of Layout Parameters for Gas Drainage in Mined-out Areas with Kilometer-long Directional Boreholes

作　　者：宋小伟 SONG Xiaowei(Licun Coal Mine,Cilinshan Coal Industry Co.,Ltd.,of Shanxi Lu'an Mining Group,Changzhi 046000,China)

机构地区：[1]山西潞安矿业集团慈林山煤业有限公司李村煤矿,山西长治046000

出　　处：《煤》2025年第2期63-68,共6页Coal

摘　　要：文章针对山西潞安集团李村煤矿2308工作面采空区上隅角瓦斯治理问题,探讨了采空区千米定向长钻孔瓦斯抽采的合理布置参数。通过理论分析、数值模拟以及现场实验等方法,研究了采空区千米定向长钻孔瓦斯抽采的影响因素,确定钻孔的最佳布置参数:钻孔的平距和垂距分别为0 m和12 m,钻孔孔径选取203 mm,抽采负压为20 kPa,钻孔个数为7个,钻孔间距为5 m.研究表明,优化钻孔布置参数后能显著改善采空区上隅角瓦斯浓度,减少工程量和工期,降低成本,为高瓦斯矿井采空区瓦斯治理提供了新的解决思路。This paper addresses the problem of gas control in the upper corner of the gob area in the 2308 working face of the Licun coal mine,Lu'an Group,Shanxi Province.It discusses the reasonable arrangement parameters for directional long boreholes for gas drainage in the gob area.By using theoretical analysis,numerical simulation,and on-site experiments,the study investigates the factors influencing the gas drainage from directional long boreholes in the gob area and determines the optimal arrangement parameters for the boreholes:the horizontal and vertical distances are 0 m and 12 m,respectively,the borehole diameter is 203 mm,the extraction negative pressure is 20 kPa,the number of boreholes is 7,and the borehole spacing is 5 m.The research shows that optimizing the borehole arrangement parameters can significantly improve the gas concentration in the upper corner of the gob area,reduce the workload and construction period,and lower the cost,providing a new solution for gas control in the gob area of high-gas mines.

关 键 词：千米定向长钻孔 参数优化 采空区瓦斯治理 高瓦斯矿井 

分 类 号：TD712.6[矿业工程—矿井通风与安全]