常村矿S3-9工作面高位抽采钻孔技术研究与应用

摘要

To S3-9 fullt-mechanized caving coal mine of changcun coal Mine as the research object of Lu'an Envionmental Energt Development co. ,Ltd. ,based on the high gas coal face intense exploitation under the condition of the gas transfinite problem,often a-dopt the method of theoretical analtsis and field observation to determine fissure zone height and high extraction drill design parameters, and effect of on-site inspection,the results show that the working face goaf caving zone height is 21. 3 m,fissure zone range of 21. 3~21. 3 m;it determined the return air lane high end hole drilling position:it is apart from the return air lane for 30. 8~38. 1 m,19. 8 ~39. 6 m vertical distance coal seam roof in the horizontal direction;it can improve the high extraction of negative pressure drilling,return air lane and enlarge the hole diameter,appropriate to increase the drilling gas Quantitt extraction.%以潞安环能股份公司常村煤矿S3-9综放工作面为研究对象，针对高瓦斯工作面高强度开采条件下瓦斯经常超限的问题，采用理论分析和现场观测的方法确定裂隙带高度和高位抽采钻孔设计参数，并进行现场效果检测，结果表明：该工作面采空区冒落带高度为21.3 m，裂隙带范围为21.3~41.2 m；确定回风巷高位钻孔终孔位置为：水平方向距回风巷里帮30.8~38.1 m，垂直方向距煤层顶板19.8~39.6 m；可提高回风巷高位钻孔的抽采负压，并适当扩大钻孔直径，以增加钻孔抽采瓦斯量。