为了提高条带开采的采出率,可采取巷柱式加固煤柱、减小留宽的方法.通过数值模拟分析,揭示了巷柱式条带煤柱可以优化条带开采方案和煤柱加固方案,研究结果表明煤柱加固能减少留设煤柱的宽度,提高条带开采采出率.结合国内某矿特殊的地质采矿条件和巷柱式煤柱加固思想,在试验区采用拱棚木垛联合加固技术,木垛与棚架组成的巷柱式加固宽度1.5 m,间距2 m.通过井下煤柱位移监测和地表变形监测数据分析可知,井下巷柱式加固体最大竖向位移为361 mm,地表最大下沉值217 mm.煤柱加固有效地防止煤壁的破坏,地表变形得到了一定的控制,确保了建(构)筑物的安全使用.因此,巷柱式煤柱加固思想能为建筑物下采煤提供重要的途径和借鉴.%In order to improve the extraction rate of strip mining,the method of coal pillar reinforcement and reducing the width of pillar is proposed. By analyzing numerical simulation,it is revealed that the strip coal pillar can optimize the strip min-ing and the coal pillar reinforcement. The results show that the coal pillar reinforcement can reduce the width of remaining coal pillar and improve recovery rate of strip mining. Combined with special geological and mining conditions of a certain coal mine in China and the thought of coal pillar reinforcement with roadway shores,the joint reinforcement technology of shed and wood crib was used in the test area with the width and interval of reinforcement bodies composed of shed and wood crib 1. 5 m and 2m separately. Analysis on data of the underground displacement monitoring of coal pillar and the surface settlement monitoring indicated that the maximum vertical displacement of underground pillar reinforcement body is 361 mm,and the maximum sub-sidence of surface is 217 mm. Coal pillar reinforcement can effectively prevent from the destruction of the coal wall, control ground surface deformation,and ensure the safety of the building. So,the thought of coal pillar reinforcement with roadway shore can provide important way and reference for coal mining under buildings.
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