中厚煤层巷道全寿命周期内变形规律模拟研究

Simulation Research on Roadway Deformation Law of Total Life Cycle in Medium Thick Coal Seam

为了获得中厚煤层巷道全寿命周期内的变形规律,以晋华宫矿12-3#层5105巷为研究对象,运用数值模拟手段研究了掘进、邻近工作面回采和本工作面回采全过程中的巷道变形量值,结果表明:掘巷过程中,5105巷围岩变形量均在15.0 mm以下,在其全寿命周期内所占比例均小于5%;邻近工作面回采时,右帮变形量占到其全寿命周期内变形量的53.05%;本工作面回采中,顶板下沉量为巷道围岩表面主要变形位置,达到181.2 mm,占到其全寿命周期内变形量的57.34%。

To get deformation law of total life cycle in roadway in medium thick coal seam, taking 12-3#layer,5105 roadway in Jinhuagong Colliery as a research object,the paper studied on roadway deformation magnitude during the whole courses of driving,near face mining and the face mining by numerical simulation.The results showed that the amount of deformation of 5105 roadway surrounding rocks were less than 15.0 mm,and the proportion in total deformation of total life cycle was less than 5 %;the amount of deformation proportion in total deformation of total life cycle in right sides was 53.05 % near face mining;the main deformation position of 5105 surrounding rocks is the roof subsidence,and the value was 181.2 mm,accounting for 57.34 % of the total displacement of total life cycle.