CAJ | 학술논문

钻孔有效抽放半径是矿井瓦斯抽放措施中的一个重要参数，直接关系到抽放钻孔的设计、布置以及抽放时间的长短。以气体渗流理论通过fluent6.3建立了钻孔瓦斯抽放流动模型，来模拟在抽放钻孔周围瓦斯的运移规律，确定抽放半径大概范围。结合现场考察，采用SF6示踪法通过对数据的测定及分析，最终得出正明矿4＃煤瓦斯抽放钻孔的有效抽放半径与抽放时间之间的关系，为瓦斯抽放钻孔的合理布置提供了科学依据。同时也为其他煤矿抽放半径的确定提供了参考依据。
찬공유효추방반경시광정와사추방조시중적일개중요삼수，직접관계도추방찬공적설계、포치이급추방시간적장단。이기체삼류이론통과fluent6.3건립료찬공와사추방류동모형，래모의재추방찬공주위와사적운이규률，학정추방반경대개범위。결합현장고찰，채용SF6시종법통과대수거적측정급분석，최종득출정명광4＃매와사추방찬공적유효추방반경여추방시간지간적관계，위와사추방찬공적합리포치제공료과학의거。동시야위기타매광추방반경적학정제공료삼고의거。
The effective drainage radius of drill hole is an important parameter in the mine gas drainage measures .It is directly related to the design of drainage borehole , arrangement and the length of drainage time .By using the nu-merical simulation software Fluent 6.3 with the theory of gas flow ,a flow model of borehole gas drainage was estab-lished to simulate the gas migration rule around the drainage borehole so as to determine the scope about drainage radius.Combing with on-site investigation , through the measurement and analysis on the data obtained by SF 6 trac-er method , the relationship between the drainage time and the effective drainage of gas drainage borehole radius in the 4#coal seam of Zhengming mine was concluded .It provides a scientific basis for reasonable layout of gas drain-age borehole , as well as a reference basis for the determination of other coal mine drainage radius .