Numerical simulation of panel barrier pillar in steeply inclined longwall mining

摘要：

　　The stability of panel barrier pillar determines the deformation, displacement and failure of the roadway in steeply inclined longwall mining, and it also affects safety at the face.The deformation, stress and failure characteristics of panel barrier pillar in steeply inclined longwall mining of of a HUNAN mine were obtained by theoretical analysis and numerical simulation.The results show that: as the face advances, the horizontal and vertical stresses of coal pillar gradually increase when the seam dip angle is uniform throughout the panel.When the coal seam dip angle is different within the panel, the horizontal stress of the coal pillar increases in areas where the coal seam dip angle increases, while the vertical stress of the pillar reduces when the coal seam dip angle increases; the horizontal and the vertical displacements of the panel barrier pillar decrease when the coal seam dip angle increases, and with the increase of the coal seam dip angle, the deformation and the failure of the rocks surrounding the panel and pillar gradually form a symmetrical distribution about the horizontal plane, which is conducive to the control of surrounding rocks.

关键词： steeply inclined coal seam panel barrier pillar load and deformation simulation analysis

作者: Yao Qi Feng Tao Zhou Ze Wang ping

作者单位: School of Energy and Safety Engineering, Hunan University of Science and Technology,Xiangtan 411201, China

会议类型: 国际会议

会议名称: The 34th International Conference on Ground Control in Mining (ICGCM) 2015(34届国际采矿岩层控制会议)

会议地点: 焦作

会议语种:英文

页码: 152-156

在线出版日期: 2015-10-17（万方平台首次上网日期，不代表论文的发表时间）