摘要
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。
In view of 3 kinds of location of roadway in the ultra-close distance seam,which the distance from the edge of roadway to the edge of the coal pillar of inward loCation is 5.5 m;the distance from the edge of roadway to the edge of the coal pillar of overlap location is 0 ;the distance from the edge of roadway to the edge of the coal pillar of outward location is 5.5 m,the FLAC^3D software is used to analyze the deformation of roadway when the roadway of 4203 coalface is excavated and the vertical stress of surrounding rock,deformation of roadway and the leading influence scope when the 4^-2 coal seam is mined.
出处
《煤炭技术》
北大核心
2017年第9期57-59,共3页
Coal Technology
关键词
极近距离煤层
内错
重叠
外错
the ultra-close distance seam
inward location
overlap location
outward location
