寺河煤矿东井钻孔瓦斯有效抽采半径研究  

Study on effective extraction radius of borehole gas in east well of Sihe Coal Mine

作　　者：马向兵 陈明明 王乐 Ma Xiangbing;Chen Mingming;Wang Le(Sihe Coal Mine of Jincheng Coal Group,Jincheng,048205,China;Shanxi Jincheng Coal Group Technology Research Institute Limited Liability Company,Jincheng 048205,China)

机构地区：[1]晋煤集团寺河煤矿,山西晋城048205 [2]山西晋煤集团技术研究院限责任公司,山西晋城048205

出　　处：《煤炭与化工》2025年第1期127-133,共7页Coal and Chemical Industry

摘　　要：本文针对煤矿瓦斯抽采问题展开研究,以寺河矿东井区6302工作面为对象,通过对煤层地质条件和瓦斯分布情况的分析,结合数值模拟,确定了钻孔的有效抽采半径。采用瓦斯储量法确定了抽采钻孔的布置方案,并利用COMSOL软件模拟了不同直径钻孔的抽采效果,最终确定了最佳的钻孔直径为94 mm。建立了抽采达标天数与有效抽采半径的数学模型,通过对普通钻孔和定向长钻孔抽采效果的对比分析,发现在相同条件下两者效果相近。本研究为煤矿瓦斯抽采提供了科学的技术支持和决策参考。In this paper,the problem of gas extraction in coal mine is studied.Taking the 6302 working face in the east well area of Sihe mine as the object,the effective extraction radius of borehole is determined by analyzing the geological conditions and gas distribution of coal seam and combining with numerical simulation.The gas reserve method was used to determine the layout of the extraction boreholes,and the COMSOL software was used to simulate the extraction effects of different diameter boreholes.Finally,the optimal borehole diameter was determined to be 94 mm.The mathematical model of the number of days to reach the standard and the effective extraction radius is established.Through the comparative analysis of the extraction effect of ordinary boreholes and directional long boreholes,it is found that the effect of the two is similar under the same conditions.This study provides scientific technical support and decision-making reference for coal mine gas extraction.

关 键 词：高瓦斯 数值模拟 瓦斯抽采 有效抽采半径 

分 类 号：TD712[矿业工程—矿井通风与安全]