摘要
为了保障穿层抽采钻孔施工安全和提高被保护层卸压瓦斯抽采效果，以祁东煤矿9煤为例，根据上保护层开采过程中被保护的严重突出煤层穿层钻孔施工及抽采瓦斯的现状，通过保护层开采原则、矿山压力和岩层移动理论以及FLUENT软件分析，进行了上保护层开采被保护层穿层抽采钻孔的合理布孔位置及时间的研究，结果表明：将被保护层9煤的穿层抽采钻孔布置在滞后保护层工作面20～25m处进行瓦斯抽采最合理。
In order to ensure the safety construction of seam gas drainage borehole and to improve the pressure releasing and gas drainage results in the protected seam, taking the 9 seam of Qidong Mine as an example, according to the seam borehole construction in the protected and outburst seam and gas drainage status during the protected seam mining process, with the analysis on the protected seam mining principle, mine strata pressure, strata displacement theory and FLUENT software, the paper had a study on the rational borehole location and time of the protected seam drainage borehole in the protected seam mining. The results showed that the seam drainage borehole location in the protected seam No. 9 beyond 20 - 25 m of the protective seam mining face would be the most rational for the gas drainage.
出处
《煤炭科学技术》
CAS
北大核心
2009年第9期38-40,共3页
Coal Science and Technology
关键词
保护层开采
卸压
抽采钻孔
protected seam mining
pressure released
gas drainage borehole
