抽采钻孔有效半径瓦斯储量综合法研究及应用  

Comprehensive method of gas reserves in effective radius of extraction borehole

作　　者：况明 庞博 Kuang Ming;Pang Bo(Jiamusi Gas Geological Research Institute Co.,Ltd.,Jiamusi 154000,China)

机构地区：[1]龙煤集团佳木斯瓦斯地质研究院有限公司,黑龙江佳木斯154000

出　　处：《煤炭与化工》2024年第9期118-122,共5页Coal and Chemical Industry

摘　　要：本文通过深入研究平岗煤矿瓦斯抽采钻孔的瓦斯运移规律,探讨了有效影响半径的关键因素。通过观测和分析钻孔抽采参数,得出了钻孔流量衰减系数,并进一步探讨了抽采时间与抽采率的关系。研究发现,有效影响半径在1.0~2.5 m时,抽采时间与抽采率呈正比;而当半径超过2.5 m时,抽采率随半径增大而降低。此外,还通过实验考察了不同钻孔间距下的抽采效果,并通过实测残余瓦斯含量验证了方法的可行性。研究结果为煤矿瓦斯灾害治理提供了重要参考,有助于优化瓦斯抽采方案和提高瓦斯灾害防治效果。建议进一步研究瓦斯运移机理、多因素影响以及引入先进技术与方法,以提高煤矿瓦斯灾害治理领域的研究水平和应用效果。In this paper,through in-depth study of the gas migration law of gas drainage boreholes in Pinggang Coal Mine,the key factors affecting the effective radius are discussed.Through the observation and analysis of borehole extraction parameters,the attenuation coefficient of borehole flow is obtained,and the relationship between extraction time and extraction rate is further discussed.It is found that when the effective influence radius is 1.0~2.5 m,the extraction time is proportional to the extraction rate.When the radius exceeds 2.5 m,the extraction rate decreases with the increase of radius.In addition,the extraction effect under different borehole spacing was investigated through experiments,and the feasibility of the method was verified by measuring the residual gas content.The research results provide an important reference for the management of coal mine gas disasters,which is helpful to optimize the gas extraction scheme and improve the prevention and control effect of gas disasters.It is suggested to further study the mechanism of gas migration,the influence of multiple factors and the introduction of advanced technologies and methods,so as to improve the research level and application effect in the field of coal mine gas disaster control.

关 键 词：抽采钻孔 有效影响半径 钻孔流量衰减 抽采时间 抽采率 残余瓦斯含量 

分 类 号：TD712[矿业工程—矿井通风与安全]