Study on rock stress and movement in large height and shallow mining face
The vertical stress, failure patterns and deformation of roadway surrounding rock under different coal pillar width are studied by using FLAC3D software.The results show that with the increase in the width of coal pillar, stress concentration range and factor in pillar decreases, gradually showed uniform bearing form, at the same time, the displacement of roadway and plastic zones in pillar gradually decrease.With the increase of the width of coal pillar, the range of elastic core is larger, indicating that the more stable the roadway coal pillar is, the more safety will be.Taking into account that large coal pillar width would result in the waste of resources, the reasonable coal pillar width is between 14~16 m.
S.G.Li Z.W.Bi Z.G.Sun
Mine Safety Technology Branch, China Coal Research Institute, Beijing, China;State Key Lab of Coal M China Coal Technology Engineering Group, Chongqing Research Institute, Chongqing, China
国际会议
The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)
北京
英文
299-302
2014-11-08（万方平台首次上网日期，不代表论文的发表时间）