关键词: 孤岛煤柱, 巷道位置, 数值模拟, 围岩控制

Abstract: Abstract: In order to improve the efficient of the coal transportation, the main transportation roadway inNo.53 mining area is needed to be arranged in the isolated coal pillar. Then surrounding rock structure and stress distribution law is analyzed firstly. With the using of Flac3d, a software, the roadway position is located in the position which is 4m away from the 5401 gob by the contrastive analysis of the coal pillar’ stress, strain, roadway’ displacement and the stability of the isolated coal pillar. Besides, the the anchoring force near the narrow coal pillar is guaranteed by the determination of the ressonable length of the anchor through the pull out test. As a result, the deformation of surrounding rock is controlled successfully with the combined support of high pre-tension and high-strength anchor under the 4m width of coal pillar in practice.