高位钻孔瓦斯抽放冒落带与裂隙带高度的测定方法  

Determination Methods of Caving & Fractured Zone Height for Gas Drainage by High Level Borehole

作　　者：李焕[1,2] 吕自伟[2] 赵亮[2] 展阔[2] 

机构地区：[1]兰州理工大学石油化工学院 [2]河南煤化集团有限责任公司

出　　处：《现代矿业》2011年第1期49-51,共3页Modern Mining

摘　　要：基于更准确的测定煤层上覆岩层中"竖三带"的法向分布范围,提高高位钻孔瓦斯抽放效果,初步划分了煤层"竖三带"的法向分布范围,探讨了影响高位钻孔瓦斯抽放效果的关键因素为选择合理层位布置钻孔,而各钻孔的施工参数均应依据采空区内冒落带和裂隙带的高度来量化设计。论述了冒落带和裂隙带高度的现场观测与理论计算方法,并根据这两种计算结果,可统筹设计优化高瓦斯工作面上高位钻孔各抽放孔的施工参数。In order to determination of normal distribution of ＂vertical three-zone＂ in coal seam overlying strata more accurate, improve the effect of high gas drainage drilling, normal distribution of ＂vertical three-zone＂ of coal seam is divided initially, choosing a resonable arrangement of layers drilling is the key factor which influence the effect of high gas drainage drilling is discussed, construction parameters of each drilling should quantitative designed based on the height of caving zone and fractured zone in goaf. Field observation and theoretical calculation method of height of caving zone and fractured zone are discussed, and construction parameter of each drainage hole of high level borehole on high gas working face could designed and optimized overall according to these two results.

关 键 词：高位钻孔 冒落带 裂隙带 测定 瓦斯抽放 

分 类 号：TD712.6[矿业工程—矿井通风与安全]