关键词: 底抽巷, 穿层钻孔, 水力冲孔, 瓦斯抽采, 分离式封孔工艺

Abstract: Abstract: in order to ensure the drainage effect and achieve the purpose of saving material borehole, the borehole imaging ZKXG30 mine track detection device in internal characteristics of rock layer drilling peep, found above orifice small range rock fissures, most fissures, according to the development situation of drilling hole of rock fracture, the sealing method was improved and developed the metal push rod and the sealing tube fixing device, using a new process of sealing borehole in rock fissures period instead of sealing tube, and sealing of drainage effect compared with the entire sealing tube, also has good air tightness, no leakage, after a month drainage statistics, production parameters consistent with two kinds of drainage borehole sealing technology, can be widely used in gas under similar geological conditions.