工作面老顶来压步距的数值模拟  

Numerical Simulation on Intervals of Main Roof Weighting

作　　者：陈亮[1] 孟祥瑞[1] 靳俊恒[1] 冯磊[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤炭技术》2011年第3期73-75,共3页Coal Technology

摘　　要：为了对老顶来压步距进行预测,以工作面为原型建立数值计算模型,分别模拟不同推进距离对老顶初次来压步距和周期来压步距的影响,得出采动过程中老顶的初次来压步距和周期来压步距。运用数值模拟方法,可以较为全面地揭示采动条件下老顶变形破坏特征及破坏范围,有利于选择和优化设计方案,同时减少试验时间,提高矿井的经济效益与社会效益。In order to forecast the intervals of main roof weighting,to build numerical model by working face,the influence for the initial and periodic weighting length of the main roof are simulated in the different face advance distance,the initial and periodic weighting length of the main roof during the mining active process is abtained.The results showed that numerical simulation can more comprehensively reveal the stress fields,deformation and failure characteristics,and failure range and depth of rock mass in coal seam floor undermining,these are favorable to select and optimize design mining scheme and reduce the testing time,so improve the economic and social benefits of mines.

关 键 词：老顶初次来压步距 老顶周期来压步距 数值模拟 FLAC3D 

分 类 号：TD327.2[矿业工程—矿井建设]