关键词: 深部回采, 主运输巷道, 锚索梁加固, 超前支护, 钻孔窥视

Abstract: The inner section of 21109 main transportation roadway is excavated in solid coal，the geological conditions are simple，the time span from excavation to mining is short. therefore，the test conditions for advanced support technology without hydraulic prop are available. the industrial test is guaranteed by means of suspension theoretical calculation，on-site drawing force detection and strengthening construction quality management；technical means such as roof separation and surrounding rock deformation monitoring，borehole crack peeping and so on are adopted to test the implementation effect. the practice shows that under specific conditions，the support technology strengthened by ordinary anchor cable beam before mining can completely replace the advanced support technology such as single pillar and advanced hydraulic support；its bearing capacity can effectively resist the mining influence during initial mining，the safety of roadway roof has been guaranteed，the working space has been greatly liberated and the coal mining operation process has been significantly optimized.