论文部分内容阅读
针对极近距离下煤层3种巷道布置位置,分别为内错5.5 m、重叠布置和外错5.5 m(以顺槽边缘到煤柱边缘为错距),采用FLAC~(3D)数值模拟的方法分析了当4203顺槽开挖时的巷道围岩变形量以及当4~(-2)煤开采时的顺槽围岩垂直应力、巷道围岩变形量和巷道超前影响范围。
According to the layout of the three kinds of roadway under the coal seam with very close distance, the internal disposition is 5.5 m, the overlapping arrangement and the outer fault 5.5 m respectively (the distance from the edge of the groove to the edge of coal pillar is the wrong distance). The FLAC 3D numerical simulation method The deformation of surrounding rock mass when 4203 was grooving and the vertical stress of surrounding rock, the surrounding rock deformation and the influence range of advance when the 4 ~ (-2) coal was mined were analyzed.