摘要
在巷旁充填体几何尺寸和巷道高度确定的情况下,充填体的力学性能的合理性直接决定着沿空留巷技术。为了探讨巷旁充填体材料对沿空留巷围岩形变的影响,以神宁乌兰矿5768回采面为例,采用Midas/GTS数值模拟与现场实测相结合的方法,分析研究不同充填材料对沿空留巷围岩形变特性的影响规律。结果表明Midas/GTS数值模拟方法确定的巷旁充填体材料在围岩逐渐稳定后,顶板形变量小,充填体稳定,与该工作面实际所用充填材料相符。
In order to investigate the effect of roadside packing material on surrounding rock deformation,influence of different filling materials on the law of gob deformation characteristics was studied,taking Ulan mine 5768 mining face as an example,applying Midas / GTS numerical simulation combined with field measurement. Simulation result shows that,with the surrounding rock gradually becoming stabilized,the roof deformation is small,and the backfilling body is stable,which conforms to actual condition of the mining face,proving its practical significance for gob-side entry retaining.
出处
《煤炭工程》
北大核心
2014年第12期78-80,83,共4页
Coal Engineering
基金
国家自然科学基金重点项目(51134019)
国家自然科学基金(51204136)
国家教育部新世纪优秀人才支持计划(NCET-10-0932)
陕西省国际合作项目(2012KW-27-01)
关键词
数值模拟
沿空留巷
力学分析
充填体材料
numerical simulation
gob-side entry retaining
mechanical analysis
backfill material
