采动巷道围岩岩裂裂隙带分布规律与封孔深度

Mining Influenced Roadway Surrounding Rock Lithoclase Fissure Zone Distribution Law and Hole Sealing Depth

以巷道周围裂隙带为研究对象,采用数值模拟、现场验证等方法,科学确定裂隙带形状为椭圆形,并进行了验证,结果表明巷道周围裂隙带呈圈闭型分布,巷道周围存在一个不规则的裂隙圈,巷道煤帮以里的裂隙带并不和煤帮平行,呈曲面状,该结果为瓦斯抽采封孔深度提供科学依据。

Fissure zone around the roadway was taken as study object, numerical simulation, field test were adopted,fissure zone shape was scientifically settled as ellipse, and was tested, roadway surrounding fissure zone was in trap type distribution, there was a irregular fissures circle around roadway, fissure zone inside the roadway was not parallel with coal wall, with curved surface, the result provided scientific basis for gas extraction hole sealing depth.