综放面沿空掘巷窄煤柱破坏规律研究

Study on the Deformation of Narrow Pillar of Roadway Driving along Next Goaf of Fully Mechanized Caving Face

煤矿综放面窄煤柱尺寸较小,并且受到采动影响,往往产生较大的变形和移动,其破坏规律异常复杂。以某矿13278工作面为例,应用三维有限差分计算软件FLAC3D分析运料巷围岩及煤柱在工作面倾向、走向方向的破坏特征,得出该工作面生产过程中需要加强支护,防止出现安全事故。

Narrow Pillar of fully mechanized mining caving face has a smaller size. It is usually has large deformation influenced by coal mining, so failure law is extremely complex. Taking 13278 mining face as an example, the failure characteristics of surrounding rock and pillar were analyzed by used FLAC3D. The result shows it should be strengthened to support.