摘要
在分析巷道底臌原因的基础上,借助有限元研究,采用切缝防治巷道底臌。结果表明,合适的切缝部位及几何尺寸对巷道底臌有一定的控制作用。
On the basis of analysing the reasons of floorheave of roadway in soft rock. the slotting effecton the prevention of swelling is investigated bymeans of Finite Element Method. It is pointed outthat the deformation due to volumetric expansion,bending and swelling,and also the elasto-plasticaland rheological deformation of the soft rock arethe main causes resulting in the floor heave. Atthe sarne time, the controlling effectiveness of var-ious slotting position and dimension are analysedthrough numerical calculation. It is shown thatslots of proper dimension is effective to some ex-tent on controlling the floor heave of roadway.The reasonable dimension and slotting time dependon the particular situation of the deformation ofthe roadway.
出处
《矿山压力与顶板管理》
1993年第1期9-13,80,共5页
Ground Pressure and Strata Control
