煤矿巷道底鼓机理及控制数值研究

Numerical Research of Mechanism and Control of Floor Heave of Roadway in Coal Mine

以柳林矿3103盘区运输大巷800 m处巷道底鼓为研究对象,分析了引起巷道底鼓的影响因素,提出了巷道底鼓分类,建立了底鼓量计算数学模型。利用FLAC^(3D)数值模拟方法,对比分析了巷道原支护、底板开挖卸压槽及底板开槽与锚索联合支护情况下巷道底鼓情况,结果表明采用底板开挖卸压槽和锚索联合支护可以较好地控制巷道底鼓。

Taking roadway floor heave at 800 m in 3103 panel transportation alleys of Liulin mine as the research object, analyzed the influence factors of floor heave of roadway, put forward the classification of floor heave of roadway, floor heave quantity calculation mathematical model is established. Used the FLAC3D numerical simulation, analyzed the supporting of roadway, slab excavation unloading groove and base plate slot and anchor rope combined support case situation of floor heave of roadway, the results showed that the bottom of excavation unloading groove and anchor rope combined support can better control the floor heave of roadway.