大南湖煤矿1301工作面切眼导硐支护方案优化

Optimization of Cutting Holes Pilot Supporting Scheme in Dananhu Coal Mine 1301 Working Face

通过运用挤压加固理论分析巷道沿轴向和切向方向的挤压加固体厚度,提出了在矩形断面巷道中也要注意挤压加固结构的均匀性,尤其在围岩易破坏的煤巷中。挤压加固的均匀性不仅体现在巷道轴向和切向方向上与挤压加固体厚度接近,而且应尽量使每根锚杆形成的挤压加固面积相互重叠,形成共同承载结构。

Using extrusion reinforcement theory to analyze roadway extrusion reinforcing body thickness along the axial and tangential direction,this paper puts forward that the rectangular roadway also should pay attention to the uniformity of extrusion reinforcement structure,especially in coal roadway that surrounding rock is easily damage.Extrusion reinforcement uniformity is not only reflected in roadway extrusion reinforcing body thickness which is close to axial and tangential direction,but also try to make extrusion reinforcement area formed by each anchor overlapped and form the common bearing structure.