摘要
针对近距离煤层下层煤回采巷道受上层煤采动影响,其顶板岩层受到不同程度破坏、整体性相对较差,支护难度较大的实际问题,利用离散元软件UDEC对上下两层煤夹层厚度不同时下层煤顶板破坏特征及回采巷道稳定性进行了分析,为下层煤回采巷道选择合理支护方式及设计支护参数提供理论支持,具有一定的实践应用价值。
The mining of day--coal affects the gateway of night--coal on close distance coal seams, aiming at the actual problems of damage roof strata, poor integrity and difficult support, the paper analyzes the characteristics of roof failure at night--coal and the stability of gateway at different interlayer thickness of day and night coal by using discrete element soft UDEC, which provides theoretical support for choosing reasonable supporting meth- od and designing supporting parameter of gateway at night--coal and has certain practical application value
出处
《江西煤炭科技》
2013年第4期171-173,共3页
Jiangxi Coal Science & Technology
关键词
UDEC
近距离煤层
采空区下
底板破坏特征
UDEC
close distance coal seams
under goaf
floor failure characteristics
