综放区段煤柱应力测试与尺寸优化

On Pillar Stress Survey and Size Optimation

经过详细调研,选取地质条件有代表性的潞安矿区,对煤柱及围岩现场应力测试,分析了不同地质情况下不同的煤柱尺寸内应力受采动影响的变化趋势,根据应力测试的结果进行对比分析并结合巷道支护方式进行煤柱尺寸的优化设计,从而保证在具体的地质情况及支护方式下煤柱的尺寸满足巷道的正常使用要求。

According to the stress survey of pillar and wall rock in Lu＇an Mining District,the authors have analyzed the alternation tendency of stress influenced by mining within different pillar sizes under different geological conditions.Based on the comparative analysis of the results of stress survey and supporting methods of roadway,the authors have also made optimization design of pillar size,which ensures that pillar size will satisfy the requirements of normal use of roadway.